Prepare for rust stable 1.60 (#11138)

* Prepare for rust stable 1.59

Besides preparing the UI tests this also adds a new script update-rust-stable.sh script for
simplifying the update of a rust stable version. This script will run all UI tests for the new
rust stable version and updating the expected output.

* Ensure we run the UI tests in CI

* use staging ci image

* More test updates

* Unignore test (#11097)

* empty commit for pipeline rerun

* empty commit for pipeline rerun

* Try to make clippy happy

* More clippy fixes

* FMT

* ci image production

Co-authored-by: alvicsam <alvicsam@gmail.com>
Co-authored-by: Alexander Samusev <41779041+alvicsam@users.noreply.github.com>

substrate/.gitlab-ci.yml

@@ -381,6 +381,8 @@ test-linux-stable:                 &test-linux
     RUSTFLAGS:                     "-Cdebug-assertions=y -Dwarnings"
     RUST_BACKTRACE:                1
     WASM_BUILD_NO_COLOR:           1
+    # Ensure we run the UI tests.
+    RUN_UI_TESTS:                  1
   script:
     # this job runs all tests in former runtime-benchmarks, frame-staking and wasmtime tests
     - time cargo test --workspace --locked --release --verbose --features runtime-benchmarks --manifest-path ./bin/node/cli/Cargo.toml

substrate/.maintain/update-rust-stable.sh

@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+#
+# Script for updating the UI tests for a new rust stable version.
+#
+# It needs to be called like this:
+#
+# update-rust-stable.sh 1.61
+#
+# This will run all UI tests with the rust stable 1.61. The script
+# requires that rustup is installed.
+set -e
+
+if [ "$#" -ne 1 ]; then
+	echo "Please specify the rust version to use. E.g. update-rust-stable.sh 1.61"
+	exit
+fi
+
+RUST_VERSION=$1
+
+if ! command -v rustup &> /dev/null
+then
+	echo "rustup needs to be installed"
+	exit
+fi
+
+rustup install $RUST_VERSION
+rustup component add rust-src --toolchain $RUST_VERSION
+
+# Ensure we run the ui tests
+export RUN_UI_TESTS=1
+# We don't need any wasm files for ui tests
+export SKIP_WASM_BUILD=1
+# Let trybuild overwrite the .stderr files
+export TRYBUILD=overwrite
+
+# Run all the relevant UI tests
+#
+# Any new UI tests in different crates need to be added here as well.
+rustup run $RUST_VERSION cargo test -p sp-runtime-interface ui
+rustup run $RUST_VERSION cargo test -p sp-api-test ui
+rustup run $RUST_VERSION cargo test -p frame-election-provider-solution-type ui
+rustup run $RUST_VERSION cargo test -p frame-support-test ui

substrate/bin/node/cli/benches/transaction_pool.rs

@@ -126,7 +126,7 @@ fn create_account_extrinsics(
 	accounts
 		.iter()
 		.enumerate()
-		.map(|(i, a)| {
+		.flat_map(|(i, a)| {
 			vec![
 				// Reset the nonce by removing any funds
 				create_extrinsic(
@@ -162,7 +162,6 @@ fn create_account_extrinsics(
 				),
 			]
 		})
-		.flatten()
 		.map(OpaqueExtrinsic::from)
 		.collect()
 }
@@ -174,7 +173,7 @@ fn create_benchmark_extrinsics(
 ) -> Vec<OpaqueExtrinsic> {
 	accounts
 		.iter()
-		.map(|account| {
+		.flat_map(|account| {
 			(0..extrinsics_per_account).map(move |nonce| {
 				create_extrinsic(
 					client,
@@ -187,7 +186,6 @@ fn create_benchmark_extrinsics(
 				)
 			})
 		})
-		.flatten()
 		.map(OpaqueExtrinsic::from)
 		.collect()
 }

substrate/client/network/src/service.rs

@@ -572,7 +572,7 @@ impl<B: BlockT + 'static, H: ExHashT> NetworkWorker<B, H> {
 							.collect();
 
 					let endpoint = if let Some(e) =
-						swarm.behaviour_mut().node(peer_id).map(|i| i.endpoint()).flatten()
+						swarm.behaviour_mut().node(peer_id).and_then(|i| i.endpoint())
 					{
 						e.clone().into()
 					} else {

substrate/client/offchain/src/lib.rs

@@ -74,11 +74,11 @@ where
 	H: ExHashT,
 {
 	fn set_authorized_peers(&self, peers: HashSet<PeerId>) {
-		self.set_authorized_peers(peers)
+		NetworkService::set_authorized_peers(self, peers)
 	}
 
 	fn set_authorized_only(&self, reserved_only: bool) {
-		self.set_authorized_only(reserved_only)
+		NetworkService::set_authorized_only(self, reserved_only)
 	}
 }
 

substrate/client/service/src/client/call_executor.rs

@@ -91,28 +91,26 @@ where
 		B: backend::Backend<Block>,
 	{
 		let spec = CallExecutor::runtime_version(self, id)?;
-		let code = if let Some(d) = self
-			.wasm_override
-			.as_ref()
-			.as_ref()
-			.map(|o| o.get(&spec.spec_version, onchain_code.heap_pages, &spec.spec_name))
-			.flatten()
-		{
-			log::debug!(target: "wasm_overrides", "using WASM override for block {}", id);
-			d
-		} else if let Some(s) =
-			self.wasm_substitutes.get(spec.spec_version, onchain_code.heap_pages, id)
-		{
-			log::debug!(target: "wasm_substitutes", "Using WASM substitute for block {:?}", id);
-			s
-		} else {
-			log::debug!(
-				target: "wasm_overrides",
-				"No WASM override available for block {}, using onchain code",
-				id
-			);
-			onchain_code
-		};
+		let code =
+			if let Some(d) =
+				self.wasm_override.as_ref().as_ref().and_then(|o| {
+					o.get(&spec.spec_version, onchain_code.heap_pages, &spec.spec_name)
+				}) {
+				log::debug!(target: "wasm_overrides", "using WASM override for block {}", id);
+				d
+			} else if let Some(s) =
+				self.wasm_substitutes.get(spec.spec_version, onchain_code.heap_pages, id)
+			{
+				log::debug!(target: "wasm_substitutes", "Using WASM substitute for block {:?}", id);
+				s
+			} else {
+				log::debug!(
+					target: "wasm_overrides",
+					"No WASM override available for block {}, using onchain code",
+					id
+				);
+				onchain_code
+			};
 
 		Ok(code)
 	}

substrate/client/service/src/client/wasm_override.rs

@@ -186,7 +186,7 @@ impl WasmOverride {
 		for entry in fs::read_dir(dir).map_err(handle_err)? {
 			let entry = entry.map_err(handle_err)?;
 			let path = entry.path();
-			match path.extension().map(|e| e.to_str()).flatten() {
+			match path.extension().and_then(|e| e.to_str()) {
 				Some("wasm") => {
 					let code = fs::read(&path).map_err(handle_err)?;
 					let code_hash = make_hash(&code);

substrate/docs/CONTRIBUTING.adoc

@@ -111,6 +111,14 @@ Please label issues with the following labels:
 
 Declaring formal releases remains the prerogative of the project maintainer(s).
 
+== UI tests
+
+UI tests are used for macros to ensure that the output of a macro doesn't change and is in the expected format. These UI tests are sensible to any changes
+in the macro generated code or to switching the rust stable version. The tests are only run when the `RUN_UI_TESTS` environment variable is set. So, when
+the CI is for example complaining about failing UI tests and it is expected that they fail these tests need to be executed locally. To simplify the updating
+of the UI test ouput there is the `.maintain/update-rust-stable.sh` script. This can be run with `.maintain/update-rust-stable.sh CURRENT_STABLE_VERSION`
+and then it will run all UI tests to update the expected output.
+
 == Changes to this arrangement
 
 This is an experiment and feedback is welcome! This document may also be subject to pull-requests or changes by contributors where you believe you have something valuable to add or change.

substrate/frame/election-provider-support/solution-type/src/lib.rs

@@ -265,6 +265,11 @@ fn imports() -> Result<TokenStream2> {
 mod tests {
 	#[test]
 	fn ui_fail() {
+		// Only run the ui tests when `RUN_UI_TESTS` is set.
+		if std::env::var("RUN_UI_TESTS").is_err() {
+			return
+		}
+
 		let cases = trybuild::TestCases::new();
 		cases.compile_fail("tests/ui/fail/*.rs");
 	}

substrate/frame/support/test/tests/construct_runtime_ui.rs

@@ -21,6 +21,11 @@ use std::env;
 #[cfg(not(feature = "disable-ui-tests"))]
 #[test]
 fn ui() {
+	// Only run the ui tests when `RUN_UI_TESTS` is set.
+	if env::var("RUN_UI_TESTS").is_err() {
+		return
+	}
+
 	// As trybuild is using `cargo check`, we don't need the real WASM binaries.
 	env::set_var("SKIP_WASM_BUILD", "1");
 

substrate/frame/support/test/tests/construct_runtime_ui/no_std_genesis_config.stderr

@@ -31,21 +31,16 @@ help: consider importing this struct
    |
 
 error[E0283]: type annotations needed
-   --> tests/construct_runtime_ui/no_std_genesis_config.rs:40:1
-    |
-40  | / construct_runtime! {
-41  | |     pub enum Runtime where
-42  | |         Block = Block,
-43  | |         NodeBlock = Block,
-...   |
-48  | |     }
-49  | | }
-    | |_^ cannot infer type
-    |
-    = note: cannot satisfy `_: std::default::Default`
-note: required by `std::default::Default::default`
-   --> $RUST/core/src/default.rs
-    |
-    |     fn default() -> Self;
-    |     ^^^^^^^^^^^^^^^^^^^^^
-    = note: this error originates in the derive macro `Default` (in Nightly builds, run with -Z macro-backtrace for more info)
+  --> tests/construct_runtime_ui/no_std_genesis_config.rs:40:1
+   |
+40 | / construct_runtime! {
+41 | |     pub enum Runtime where
+42 | |         Block = Block,
+43 | |         NodeBlock = Block,
+...  |
+48 | |     }
+49 | | }
+   | |_^ cannot infer type
+   |
+   = note: cannot satisfy `_: std::default::Default`
+   = note: this error originates in the derive macro `Default` (in Nightly builds, run with -Z macro-backtrace for more info)

substrate/frame/support/test/tests/construct_runtime_ui/undefined_genesis_config_part.stderr

@@ -34,21 +34,16 @@ help: consider importing this struct
    |
 
 error[E0283]: type annotations needed
-   --> tests/construct_runtime_ui/undefined_genesis_config_part.rs:49:1
-    |
-49  | / construct_runtime! {
-50  | |     pub enum Runtime where
-51  | |         Block = Block,
-52  | |         NodeBlock = Block,
-...   |
-57  | |     }
-58  | | }
-    | |_^ cannot infer type
-    |
-    = note: cannot satisfy `_: std::default::Default`
-note: required by `std::default::Default::default`
-   --> $RUST/core/src/default.rs
-    |
-    |     fn default() -> Self;
-    |     ^^^^^^^^^^^^^^^^^^^^^
-    = note: this error originates in the derive macro `Default` (in Nightly builds, run with -Z macro-backtrace for more info)
+  --> tests/construct_runtime_ui/undefined_genesis_config_part.rs:49:1
+   |
+49 | / construct_runtime! {
+50 | |     pub enum Runtime where
+51 | |         Block = Block,
+52 | |         NodeBlock = Block,
+...  |
+57 | |     }
+58 | | }
+   | |_^ cannot infer type
+   |
+   = note: cannot satisfy `_: std::default::Default`
+   = note: this error originates in the derive macro `Default` (in Nightly builds, run with -Z macro-backtrace for more info)

substrate/frame/support/test/tests/decl_module_ui.rs

@@ -19,6 +19,11 @@
 #[cfg(not(feature = "disable-ui-tests"))]
 #[test]
 fn decl_module_ui() {
+	// Only run the ui tests when `RUN_UI_TESTS` is set.
+	if std::env::var("RUN_UI_TESTS").is_err() {
+		return
+	}
+
 	// As trybuild is using `cargo check`, we don't need the real WASM binaries.
 	std::env::set_var("SKIP_WASM_BUILD", "1");
 

substrate/frame/support/test/tests/decl_storage_ui.rs

@@ -19,6 +19,11 @@
 #[cfg(not(feature = "disable-ui-tests"))]
 #[test]
 fn decl_storage_ui() {
+	// Only run the ui tests when `RUN_UI_TESTS` is set.
+	if std::env::var("RUN_UI_TESTS").is_err() {
+		return
+	}
+
 	// As trybuild is using `cargo check`, we don't need the real WASM binaries.
 	std::env::set_var("SKIP_WASM_BUILD", "1");
 

substrate/frame/support/test/tests/derive_no_bound_ui.rs

@@ -19,6 +19,11 @@
 #[cfg(not(feature = "disable-ui-tests"))]
 #[test]
 fn derive_no_bound_ui() {
+	// Only run the ui tests when `RUN_UI_TESTS` is set.
+	if std::env::var("RUN_UI_TESTS").is_err() {
+		return
+	}
+
 	// As trybuild is using `cargo check`, we don't need the real WASM binaries.
 	std::env::set_var("SKIP_WASM_BUILD", "1");
 

substrate/frame/support/test/tests/derive_no_bound_ui/clone.stderr

@@ -1,11 +1,5 @@
 error[E0277]: the trait bound `<T as Config>::C: Clone` is not satisfied
-   --> tests/derive_no_bound_ui/clone.rs:7:2
-    |
-7   |     c: T::C,
-    |     ^ the trait `Clone` is not implemented for `<T as Config>::C`
-    |
-note: required by `clone`
-   --> $RUST/core/src/clone.rs
-    |
-    |     fn clone(&self) -> Self;
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^
+ --> tests/derive_no_bound_ui/clone.rs:7:2
+  |
+7 |     c: T::C,
+  |     ^ the trait `Clone` is not implemented for `<T as Config>::C`

substrate/frame/support/test/tests/derive_no_bound_ui/default.stderr

@@ -1,11 +1,5 @@
 error[E0277]: the trait bound `<T as Config>::C: std::default::Default` is not satisfied
-   --> $DIR/default.rs:7:2
-    |
-7   |     c: T::C,
-    |     ^ the trait `std::default::Default` is not implemented for `<T as Config>::C`
-    |
-note: required by `std::default::Default::default`
-   --> $DIR/default.rs:116:5
-    |
-116 |     fn default() -> Self;
-    |     ^^^^^^^^^^^^^^^^^^^^^
+ --> tests/derive_no_bound_ui/default.rs:7:2
+  |
+7 |     c: T::C,
+  |     ^ the trait `std::default::Default` is not implemented for `<T as Config>::C`

substrate/frame/support/test/tests/pallet_ui.rs

@@ -19,6 +19,11 @@
 #[cfg(not(feature = "disable-ui-tests"))]
 #[test]
 fn pallet_ui() {
+	// Only run the ui tests when `RUN_UI_TESTS` is set.
+	if std::env::var("RUN_UI_TESTS").is_err() {
+		return
+	}
+
 	// As trybuild is using `cargo check`, we don't need the real WASM binaries.
 	std::env::set_var("SKIP_WASM_BUILD", "1");
 

substrate/frame/support/test/tests/pallet_ui/call_argument_invalid_bound.stderr

@@ -9,16 +9,10 @@ error[E0277]: `<T as pallet::Config>::Bar` doesn't implement `std::fmt::Debug`
    = note: required for the cast to the object type `dyn std::fmt::Debug`
 
 error[E0277]: the trait bound `<T as pallet::Config>::Bar: Clone` is not satisfied
-   --> tests/pallet_ui/call_argument_invalid_bound.rs:20:36
-    |
-20  |         pub fn foo(origin: OriginFor<T>, bar: T::Bar) -> DispatchResultWithPostInfo {
-    |                                          ^^^ the trait `Clone` is not implemented for `<T as pallet::Config>::Bar`
-    |
-note: required by `clone`
-   --> $RUST/core/src/clone.rs
-    |
-    |     fn clone(&self) -> Self;
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^
+  --> tests/pallet_ui/call_argument_invalid_bound.rs:20:36
+   |
+20 |         pub fn foo(origin: OriginFor<T>, bar: T::Bar) -> DispatchResultWithPostInfo {
+   |                                          ^^^ the trait `Clone` is not implemented for `<T as pallet::Config>::Bar`
 
 error[E0369]: binary operation `==` cannot be applied to type `&<T as pallet::Config>::Bar`
   --> tests/pallet_ui/call_argument_invalid_bound.rs:20:36

substrate/frame/support/test/tests/pallet_ui/call_argument_invalid_bound_2.stderr

@@ -9,16 +9,10 @@ error[E0277]: `<T as pallet::Config>::Bar` doesn't implement `std::fmt::Debug`
    = note: required for the cast to the object type `dyn std::fmt::Debug`
 
 error[E0277]: the trait bound `<T as pallet::Config>::Bar: Clone` is not satisfied
-   --> tests/pallet_ui/call_argument_invalid_bound_2.rs:20:36
-    |
-20  |         pub fn foo(origin: OriginFor<T>, bar: T::Bar) -> DispatchResultWithPostInfo {
-    |                                          ^^^ the trait `Clone` is not implemented for `<T as pallet::Config>::Bar`
-    |
-note: required by `clone`
-   --> $RUST/core/src/clone.rs
-    |
-    |     fn clone(&self) -> Self;
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^
+  --> tests/pallet_ui/call_argument_invalid_bound_2.rs:20:36
+   |
+20 |         pub fn foo(origin: OriginFor<T>, bar: T::Bar) -> DispatchResultWithPostInfo {
+   |                                          ^^^ the trait `Clone` is not implemented for `<T as pallet::Config>::Bar`
 
 error[E0369]: binary operation `==` cannot be applied to type `&<T as pallet::Config>::Bar`
   --> tests/pallet_ui/call_argument_invalid_bound_2.rs:20:36
@@ -32,38 +26,26 @@ help: consider further restricting this bound
    |                    +++++++++++++++++++++
 
 error[E0277]: the trait bound `<T as pallet::Config>::Bar: WrapperTypeEncode` is not satisfied
-   --> tests/pallet_ui/call_argument_invalid_bound_2.rs:1:1
-    |
-1   |   #[frame_support::pallet]
-    |   ^-----------------------
-    |   |
-    |  _in this procedural macro expansion
-    | |
-2   | | mod pallet {
-3   | |     use frame_support::pallet_prelude::{Hooks, DispatchResultWithPostInfo};
-4   | |     use frame_system::pallet_prelude::{BlockNumberFor, OriginFor};
-...   |
-16  | |
-17  | |     #[pallet::call]
-    | |__________________^ the trait `WrapperTypeEncode` is not implemented for `<T as pallet::Config>::Bar`
-    |
-    = note: required because of the requirements on the impl of `Encode` for `<T as pallet::Config>::Bar`
-note: required by a bound in `encode_to`
-   --> $CARGO/parity-scale-codec-3.0.0/src/codec.rs
-    |
-    |     fn encode_to<T: Output + ?Sized>(&self, dest: &mut T) {
-    |                     ^^^^^^ required by this bound in `encode_to`
-    = note: this error originates in the derive macro `frame_support::codec::Encode` (in Nightly builds, run with -Z macro-backtrace for more info)
+  --> tests/pallet_ui/call_argument_invalid_bound_2.rs:20:36
+   |
+1  | / #[frame_support::pallet]
+2  | | mod pallet {
+3  | |     use frame_support::pallet_prelude::{Hooks, DispatchResultWithPostInfo};
+4  | |     use frame_system::pallet_prelude::{BlockNumberFor, OriginFor};
+...  |
+16 | |
+17 | |     #[pallet::call]
+   | |__________________- required by a bound introduced by this call
+...
+20 |           pub fn foo(origin: OriginFor<T>, bar: T::Bar) -> DispatchResultWithPostInfo {
+   |                                            ^^^ the trait `WrapperTypeEncode` is not implemented for `<T as pallet::Config>::Bar`
+   |
+   = note: required because of the requirements on the impl of `Encode` for `<T as pallet::Config>::Bar`
 
 error[E0277]: the trait bound `<T as pallet::Config>::Bar: WrapperTypeDecode` is not satisfied
-   --> tests/pallet_ui/call_argument_invalid_bound_2.rs:17:12
-    |
-17  |     #[pallet::call]
-    |               ^^^^ the trait `WrapperTypeDecode` is not implemented for `<T as pallet::Config>::Bar`
-    |
-    = note: required because of the requirements on the impl of `Decode` for `<T as pallet::Config>::Bar`
-note: required by a bound in `parity_scale_codec::Decode::decode`
-   --> $CARGO/parity-scale-codec-3.0.0/src/codec.rs
-    |
-    |     fn decode<I: Input>(input: &mut I) -> Result<Self, Error>;
-    |                  ^^^^^ required by this bound in `parity_scale_codec::Decode::decode`
+  --> tests/pallet_ui/call_argument_invalid_bound_2.rs:17:12
+   |
+17 |     #[pallet::call]
+   |               ^^^^ the trait `WrapperTypeDecode` is not implemented for `<T as pallet::Config>::Bar`
+   |
+   = note: required because of the requirements on the impl of `Decode` for `<T as pallet::Config>::Bar`

substrate/frame/support/test/tests/pallet_ui/error_does_not_derive_pallet_error.stderr

@@ -1,12 +1,7 @@
 error[E0277]: the trait bound `MyError: PalletError` is not satisfied
-  --> tests/pallet_ui/error_does_not_derive_pallet_error.rs:1:1
-   |
-1  | #[frame_support::pallet]
-   | ^^^^^^^^^^^^^^^^^^^^^^^^ the trait `PalletError` is not implemented for `MyError`
-   |
-note: required by `MAX_ENCODED_SIZE`
-  --> $WORKSPACE/frame/support/src/traits/error.rs
-   |
-   |     const MAX_ENCODED_SIZE: usize;
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   = note: this error originates in the derive macro `frame_support::PalletError` (in Nightly builds, run with -Z macro-backtrace for more info)
+ --> tests/pallet_ui/error_does_not_derive_pallet_error.rs:1:1
+  |
+1 | #[frame_support::pallet]
+  | ^^^^^^^^^^^^^^^^^^^^^^^^ the trait `PalletError` is not implemented for `MyError`
+  |
+  = note: this error originates in the derive macro `frame_support::PalletError` (in Nightly builds, run with -Z macro-backtrace for more info)

substrate/frame/support/test/tests/pallet_ui/event_field_not_member.stderr

@@ -1,14 +1,8 @@
 error[E0277]: the trait bound `<T as pallet::Config>::Bar: Clone` is not satisfied
-   --> tests/pallet_ui/event_field_not_member.rs:23:7
-    |
-23  |         B { b: T::Bar },
-    |             ^ the trait `Clone` is not implemented for `<T as pallet::Config>::Bar`
-    |
-note: required by `clone`
-   --> $RUST/core/src/clone.rs
-    |
-    |     fn clone(&self) -> Self;
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^
+  --> tests/pallet_ui/event_field_not_member.rs:23:7
+   |
+23 |         B { b: T::Bar },
+   |             ^ the trait `Clone` is not implemented for `<T as pallet::Config>::Bar`
 
 error[E0369]: binary operation `==` cannot be applied to type `&<T as pallet::Config>::Bar`
   --> tests/pallet_ui/event_field_not_member.rs:23:7

substrate/frame/support/test/tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen.stderr

@@ -7,11 +7,6 @@ error[E0277]: the trait bound `Bar: WrapperTypeDecode` is not satisfied
    = note: required because of the requirements on the impl of `Decode` for `Bar`
    = note: required because of the requirements on the impl of `FullCodec` for `Bar`
    = note: required because of the requirements on the impl of `PartialStorageInfoTrait` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
-note: required by `partial_storage_info`
-  --> $WORKSPACE/frame/support/src/traits/storage.rs
-   |
-   |     fn partial_storage_info() -> Vec<StorageInfo>;
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error[E0277]: the trait bound `Bar: EncodeLike` is not satisfied
   --> tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen.rs:10:12
@@ -22,11 +17,6 @@ error[E0277]: the trait bound `Bar: EncodeLike` is not satisfied
    = note: required because of the requirements on the impl of `FullEncode` for `Bar`
    = note: required because of the requirements on the impl of `FullCodec` for `Bar`
    = note: required because of the requirements on the impl of `PartialStorageInfoTrait` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
-note: required by `partial_storage_info`
-  --> $WORKSPACE/frame/support/src/traits/storage.rs
-   |
-   |     fn partial_storage_info() -> Vec<StorageInfo>;
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error[E0277]: the trait bound `Bar: WrapperTypeEncode` is not satisfied
   --> tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen.rs:10:12
@@ -38,68 +28,43 @@ error[E0277]: the trait bound `Bar: WrapperTypeEncode` is not satisfied
    = note: required because of the requirements on the impl of `FullEncode` for `Bar`
    = note: required because of the requirements on the impl of `FullCodec` for `Bar`
    = note: required because of the requirements on the impl of `PartialStorageInfoTrait` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
-note: required by `partial_storage_info`
-  --> $WORKSPACE/frame/support/src/traits/storage.rs
-   |
-   |     fn partial_storage_info() -> Vec<StorageInfo>;
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error[E0277]: the trait bound `Bar: TypeInfo` is not satisfied
-   --> tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen.rs:21:12
-    |
-21  |     #[pallet::storage]
-    |               ^^^^^^^ the trait `TypeInfo` is not implemented for `Bar`
-    |
-    = note: required because of the requirements on the impl of `StaticTypeInfo` for `Bar`
-    = note: required because of the requirements on the impl of `StorageEntryMetadataBuilder` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
-note: required by `build_metadata`
-   --> $WORKSPACE/frame/support/src/storage/types/mod.rs
-    |
-    |     fn build_metadata(doc: Vec<&'static str>, entries: &mut Vec<StorageEntryMetadata>);
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  --> tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen.rs:21:12
+   |
+21 |     #[pallet::storage]
+   |               ^^^^^^^ the trait `TypeInfo` is not implemented for `Bar`
+   |
+   = note: required because of the requirements on the impl of `StaticTypeInfo` for `Bar`
+   = note: required because of the requirements on the impl of `StorageEntryMetadataBuilder` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
 
 error[E0277]: the trait bound `Bar: WrapperTypeDecode` is not satisfied
-   --> tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen.rs:21:12
-    |
-21  |     #[pallet::storage]
-    |               ^^^^^^^ the trait `WrapperTypeDecode` is not implemented for `Bar`
-    |
-    = note: required because of the requirements on the impl of `Decode` for `Bar`
-    = note: required because of the requirements on the impl of `FullCodec` for `Bar`
-    = note: required because of the requirements on the impl of `StorageEntryMetadataBuilder` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
-note: required by `build_metadata`
-   --> $WORKSPACE/frame/support/src/storage/types/mod.rs
-    |
-    |     fn build_metadata(doc: Vec<&'static str>, entries: &mut Vec<StorageEntryMetadata>);
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  --> tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen.rs:21:12
+   |
+21 |     #[pallet::storage]
+   |               ^^^^^^^ the trait `WrapperTypeDecode` is not implemented for `Bar`
+   |
+   = note: required because of the requirements on the impl of `Decode` for `Bar`
+   = note: required because of the requirements on the impl of `FullCodec` for `Bar`
+   = note: required because of the requirements on the impl of `StorageEntryMetadataBuilder` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
 
 error[E0277]: the trait bound `Bar: EncodeLike` is not satisfied
-   --> tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen.rs:21:12
-    |
-21  |     #[pallet::storage]
-    |               ^^^^^^^ the trait `EncodeLike` is not implemented for `Bar`
-    |
-    = note: required because of the requirements on the impl of `FullEncode` for `Bar`
-    = note: required because of the requirements on the impl of `FullCodec` for `Bar`
-    = note: required because of the requirements on the impl of `StorageEntryMetadataBuilder` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
-note: required by `build_metadata`
-   --> $WORKSPACE/frame/support/src/storage/types/mod.rs
-    |
-    |     fn build_metadata(doc: Vec<&'static str>, entries: &mut Vec<StorageEntryMetadata>);
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  --> tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen.rs:21:12
+   |
+21 |     #[pallet::storage]
+   |               ^^^^^^^ the trait `EncodeLike` is not implemented for `Bar`
+   |
+   = note: required because of the requirements on the impl of `FullEncode` for `Bar`
+   = note: required because of the requirements on the impl of `FullCodec` for `Bar`
+   = note: required because of the requirements on the impl of `StorageEntryMetadataBuilder` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
 
 error[E0277]: the trait bound `Bar: WrapperTypeEncode` is not satisfied
-   --> tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen.rs:21:12
-    |
-21  |     #[pallet::storage]
-    |               ^^^^^^^ the trait `WrapperTypeEncode` is not implemented for `Bar`
-    |
-    = note: required because of the requirements on the impl of `Encode` for `Bar`
-    = note: required because of the requirements on the impl of `FullEncode` for `Bar`
-    = note: required because of the requirements on the impl of `FullCodec` for `Bar`
-    = note: required because of the requirements on the impl of `StorageEntryMetadataBuilder` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
-note: required by `build_metadata`
-   --> $WORKSPACE/frame/support/src/storage/types/mod.rs
-    |
-    |     fn build_metadata(doc: Vec<&'static str>, entries: &mut Vec<StorageEntryMetadata>);
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  --> tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen.rs:21:12
+   |
+21 |     #[pallet::storage]
+   |               ^^^^^^^ the trait `WrapperTypeEncode` is not implemented for `Bar`
+   |
+   = note: required because of the requirements on the impl of `Encode` for `Bar`
+   = note: required because of the requirements on the impl of `FullEncode` for `Bar`
+   = note: required because of the requirements on the impl of `FullCodec` for `Bar`
+   = note: required because of the requirements on the impl of `StorageEntryMetadataBuilder` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`

substrate/frame/support/test/tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen_unnamed.stderr

@@ -7,11 +7,6 @@ error[E0277]: the trait bound `Bar: WrapperTypeDecode` is not satisfied
    = note: required because of the requirements on the impl of `Decode` for `Bar`
    = note: required because of the requirements on the impl of `FullCodec` for `Bar`
    = note: required because of the requirements on the impl of `PartialStorageInfoTrait` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
-note: required by `partial_storage_info`
-  --> $WORKSPACE/frame/support/src/traits/storage.rs
-   |
-   |     fn partial_storage_info() -> Vec<StorageInfo>;
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error[E0277]: the trait bound `Bar: EncodeLike` is not satisfied
   --> tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen_unnamed.rs:10:12
@@ -22,11 +17,6 @@ error[E0277]: the trait bound `Bar: EncodeLike` is not satisfied
    = note: required because of the requirements on the impl of `FullEncode` for `Bar`
    = note: required because of the requirements on the impl of `FullCodec` for `Bar`
    = note: required because of the requirements on the impl of `PartialStorageInfoTrait` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
-note: required by `partial_storage_info`
-  --> $WORKSPACE/frame/support/src/traits/storage.rs
-   |
-   |     fn partial_storage_info() -> Vec<StorageInfo>;
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error[E0277]: the trait bound `Bar: WrapperTypeEncode` is not satisfied
   --> tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen_unnamed.rs:10:12
@@ -38,68 +28,43 @@ error[E0277]: the trait bound `Bar: WrapperTypeEncode` is not satisfied
    = note: required because of the requirements on the impl of `FullEncode` for `Bar`
    = note: required because of the requirements on the impl of `FullCodec` for `Bar`
    = note: required because of the requirements on the impl of `PartialStorageInfoTrait` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
-note: required by `partial_storage_info`
-  --> $WORKSPACE/frame/support/src/traits/storage.rs
-   |
-   |     fn partial_storage_info() -> Vec<StorageInfo>;
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error[E0277]: the trait bound `Bar: TypeInfo` is not satisfied
-   --> tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen_unnamed.rs:21:12
-    |
-21  |     #[pallet::storage]
-    |               ^^^^^^^ the trait `TypeInfo` is not implemented for `Bar`
-    |
-    = note: required because of the requirements on the impl of `StaticTypeInfo` for `Bar`
-    = note: required because of the requirements on the impl of `StorageEntryMetadataBuilder` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
-note: required by `build_metadata`
-   --> $WORKSPACE/frame/support/src/storage/types/mod.rs
-    |
-    |     fn build_metadata(doc: Vec<&'static str>, entries: &mut Vec<StorageEntryMetadata>);
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  --> tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen_unnamed.rs:21:12
+   |
+21 |     #[pallet::storage]
+   |               ^^^^^^^ the trait `TypeInfo` is not implemented for `Bar`
+   |
+   = note: required because of the requirements on the impl of `StaticTypeInfo` for `Bar`
+   = note: required because of the requirements on the impl of `StorageEntryMetadataBuilder` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
 
 error[E0277]: the trait bound `Bar: WrapperTypeDecode` is not satisfied
-   --> tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen_unnamed.rs:21:12
-    |
-21  |     #[pallet::storage]
-    |               ^^^^^^^ the trait `WrapperTypeDecode` is not implemented for `Bar`
-    |
-    = note: required because of the requirements on the impl of `Decode` for `Bar`
-    = note: required because of the requirements on the impl of `FullCodec` for `Bar`
-    = note: required because of the requirements on the impl of `StorageEntryMetadataBuilder` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
-note: required by `build_metadata`
-   --> $WORKSPACE/frame/support/src/storage/types/mod.rs
-    |
-    |     fn build_metadata(doc: Vec<&'static str>, entries: &mut Vec<StorageEntryMetadata>);
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  --> tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen_unnamed.rs:21:12
+   |
+21 |     #[pallet::storage]
+   |               ^^^^^^^ the trait `WrapperTypeDecode` is not implemented for `Bar`
+   |
+   = note: required because of the requirements on the impl of `Decode` for `Bar`
+   = note: required because of the requirements on the impl of `FullCodec` for `Bar`
+   = note: required because of the requirements on the impl of `StorageEntryMetadataBuilder` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
 
 error[E0277]: the trait bound `Bar: EncodeLike` is not satisfied
-   --> tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen_unnamed.rs:21:12
-    |
-21  |     #[pallet::storage]
-    |               ^^^^^^^ the trait `EncodeLike` is not implemented for `Bar`
-    |
-    = note: required because of the requirements on the impl of `FullEncode` for `Bar`
-    = note: required because of the requirements on the impl of `FullCodec` for `Bar`
-    = note: required because of the requirements on the impl of `StorageEntryMetadataBuilder` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
-note: required by `build_metadata`
-   --> $WORKSPACE/frame/support/src/storage/types/mod.rs
-    |
-    |     fn build_metadata(doc: Vec<&'static str>, entries: &mut Vec<StorageEntryMetadata>);
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  --> tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen_unnamed.rs:21:12
+   |
+21 |     #[pallet::storage]
+   |               ^^^^^^^ the trait `EncodeLike` is not implemented for `Bar`
+   |
+   = note: required because of the requirements on the impl of `FullEncode` for `Bar`
+   = note: required because of the requirements on the impl of `FullCodec` for `Bar`
+   = note: required because of the requirements on the impl of `StorageEntryMetadataBuilder` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
 
 error[E0277]: the trait bound `Bar: WrapperTypeEncode` is not satisfied
-   --> tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen_unnamed.rs:21:12
-    |
-21  |     #[pallet::storage]
-    |               ^^^^^^^ the trait `WrapperTypeEncode` is not implemented for `Bar`
-    |
-    = note: required because of the requirements on the impl of `Encode` for `Bar`
-    = note: required because of the requirements on the impl of `FullEncode` for `Bar`
-    = note: required because of the requirements on the impl of `FullCodec` for `Bar`
-    = note: required because of the requirements on the impl of `StorageEntryMetadataBuilder` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
-note: required by `build_metadata`
-   --> $WORKSPACE/frame/support/src/storage/types/mod.rs
-    |
-    |     fn build_metadata(doc: Vec<&'static str>, entries: &mut Vec<StorageEntryMetadata>);
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  --> tests/pallet_ui/storage_ensure_span_are_ok_on_wrong_gen_unnamed.rs:21:12
+   |
+21 |     #[pallet::storage]
+   |               ^^^^^^^ the trait `WrapperTypeEncode` is not implemented for `Bar`
+   |
+   = note: required because of the requirements on the impl of `Encode` for `Bar`
+   = note: required because of the requirements on the impl of `FullEncode` for `Bar`
+   = note: required because of the requirements on the impl of `FullCodec` for `Bar`
+   = note: required because of the requirements on the impl of `StorageEntryMetadataBuilder` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`

substrate/frame/support/test/tests/pallet_ui/storage_info_unsatisfied.stderr

@@ -1,12 +1,7 @@
 error[E0277]: the trait bound `Bar: MaxEncodedLen` is not satisfied
-  --> tests/pallet_ui/storage_info_unsatisfied.rs:9:12
-   |
-9  |     #[pallet::pallet]
-   |               ^^^^^^ the trait `MaxEncodedLen` is not implemented for `Bar`
-   |
-   = note: required because of the requirements on the impl of `StorageInfoTrait` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`
-note: required by `storage_info`
-  --> $WORKSPACE/frame/support/src/traits/storage.rs
-   |
-   |     fn storage_info() -> Vec<StorageInfo>;
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ --> tests/pallet_ui/storage_info_unsatisfied.rs:9:12
+  |
+9 |     #[pallet::pallet]
+  |               ^^^^^^ the trait `MaxEncodedLen` is not implemented for `Bar`
+  |
+  = note: required because of the requirements on the impl of `StorageInfoTrait` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>`

substrate/frame/support/test/tests/pallet_ui/storage_info_unsatisfied_nmap.stderr

@@ -6,8 +6,3 @@ error[E0277]: the trait bound `Bar: MaxEncodedLen` is not satisfied
    |
    = note: required because of the requirements on the impl of `KeyGeneratorMaxEncodedLen` for `Key<frame_support::Twox64Concat, Bar>`
    = note: required because of the requirements on the impl of `StorageInfoTrait` for `frame_support::pallet_prelude::StorageNMap<_GeneratedPrefixForStorageFoo<T>, Key<frame_support::Twox64Concat, Bar>, u32>`
-note: required by `storage_info`
-  --> $WORKSPACE/frame/support/src/traits/storage.rs
-   |
-   |     fn storage_info() -> Vec<StorageInfo>;
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

substrate/primitives/api/test/tests/trybuild.rs

@@ -20,6 +20,11 @@ use std::env;
 #[rustversion::attr(not(stable), ignore)]
 #[test]
 fn ui() {
+	// Only run the ui tests when `RUN_UI_TESTS` is set.
+	if env::var("RUN_UI_TESTS").is_err() {
+		return
+	}
+
 	// As trybuild is using `cargo check`, we don't need the real WASM binaries.
 	env::set_var("SKIP_WASM_BUILD", "1");
 

substrate/primitives/api/test/tests/ui/changed_in_no_default_method.stderr

@@ -1,6 +1,6 @@
 error: There is no 'default' method with this name (without `changed_in` attribute).
-The 'default' method is used to call into the latest implementation.
-  --> $DIR/changed_in_no_default_method.rs:15:6
+       The 'default' method is used to call into the latest implementation.
+  --> tests/ui/changed_in_no_default_method.rs:15:6
    |
 15 |         fn test(data: u64);
    |            ^^^^

substrate/primitives/api/test/tests/ui/impl_incorrect_method_signature.stderr

@@ -1,28 +1,23 @@
 error[E0053]: method `test` has an incompatible type for trait
-  --> $DIR/impl_incorrect_method_signature.rs:19:17
+  --> tests/ui/impl_incorrect_method_signature.rs:19:17
    |
-13 |         fn test(data: u64);
-   |                       --- type in trait
-...
 19 |         fn test(data: String) {}
    |                       ^^^^^^
    |                       |
    |                       expected `u64`, found struct `std::string::String`
    |                       help: change the parameter type to match the trait: `u64`
    |
+note: type in trait
+  --> tests/ui/impl_incorrect_method_signature.rs:13:17
+   |
+13 |         fn test(data: u64);
+   |                       ^^^
    = note: expected fn pointer `fn(u64)`
               found fn pointer `fn(std::string::String)`
 
 error[E0053]: method `Api_test_runtime_api_impl` has an incompatible type for trait
-  --> $DIR/impl_incorrect_method_signature.rs:17:1
+  --> tests/ui/impl_incorrect_method_signature.rs:17:1
    |
-11 | / sp_api::decl_runtime_apis! {
-12 | |     pub trait Api {
-13 | |         fn test(data: u64);
-14 | |     }
-15 | | }
-   | |_- type in trait
-16 |
 17 |   sp_api::impl_runtime_apis! {
    |   -^^^^^^^^^^^^^^^^^^^^^^^^^
    |   |
@@ -36,12 +31,21 @@ error[E0053]: method `Api_test_runtime_api_impl` has an incompatible type for tr
 33 | | }
    | |_- help: change the parameter type to match the trait: `std::option::Option<u64>`
    |
+note: type in trait
+  --> tests/ui/impl_incorrect_method_signature.rs:11:1
+   |
+11 | / sp_api::decl_runtime_apis! {
+12 | |     pub trait Api {
+13 | |         fn test(data: u64);
+14 | |     }
+15 | | }
+   | |_^
    = note: expected fn pointer `fn(&RuntimeApiImpl<__SR_API_BLOCK__, RuntimeApiImplCall>, &BlockId<__SR_API_BLOCK__>, ExecutionContext, std::option::Option<u64>, Vec<_>) -> Result<_, _>`
               found fn pointer `fn(&RuntimeApiImpl<__SR_API_BLOCK__, RuntimeApiImplCall>, &BlockId<__SR_API_BLOCK__>, ExecutionContext, std::option::Option<std::string::String>, Vec<_>) -> Result<_, _>`
    = note: this error originates in the macro `sp_api::impl_runtime_apis` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error[E0308]: mismatched types
-  --> $DIR/impl_incorrect_method_signature.rs:17:1
+  --> tests/ui/impl_incorrect_method_signature.rs:17:1
    |
 17 | / sp_api::impl_runtime_apis! {
 18 | |     impl self::Api<Block> for Runtime {
@@ -55,7 +59,7 @@ error[E0308]: mismatched types
    = note: this error originates in the macro `sp_api::impl_runtime_apis` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error[E0308]: mismatched types
-  --> $DIR/impl_incorrect_method_signature.rs:19:11
+  --> tests/ui/impl_incorrect_method_signature.rs:19:11
    |
 19 |         fn test(data: String) {}
    |                 ^^^^ expected `u64`, found struct `std::string::String`

substrate/primitives/api/test/tests/ui/mock_only_self_reference.stderr

@@ -1,26 +1,18 @@
 error: Only `&self` is supported!
-  --> $DIR/mock_only_self_reference.rs:14:11
+  --> tests/ui/mock_only_self_reference.rs:14:11
    |
 14 |         fn test(self, data: u64) {}
    |                 ^^^^
 
 error: Only `&self` is supported!
-  --> $DIR/mock_only_self_reference.rs:16:12
+  --> tests/ui/mock_only_self_reference.rs:16:12
    |
 16 |         fn test2(&mut self, data: u64) {}
    |                  ^
 
 error[E0053]: method `Api_test_runtime_api_impl` has an incompatible type for trait
-  --> $DIR/mock_only_self_reference.rs:12:1
+  --> tests/ui/mock_only_self_reference.rs:12:1
    |
-3  | / sp_api::decl_runtime_apis! {
-4  | |     pub trait Api {
-5  | |         fn test(data: u64);
-6  | |         fn test2(data: u64);
-7  | |     }
-8  | | }
-   | |_- type in trait
-...
 12 |   sp_api::mock_impl_runtime_apis! {
    |   -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |   |
@@ -34,21 +26,23 @@ error[E0053]: method `Api_test_runtime_api_impl` has an incompatible type for tr
 18 | | }
    | |_- help: change the parameter type to match the trait: `Option<u64>`
    |
+note: type in trait
+  --> tests/ui/mock_only_self_reference.rs:3:1
+   |
+3  | / sp_api::decl_runtime_apis! {
+4  | |     pub trait Api {
+5  | |         fn test(data: u64);
+6  | |         fn test2(data: u64);
+7  | |     }
+8  | | }
+   | |_^
    = note: expected fn pointer `fn(&MockApi, &BlockId<sp_runtime::generic::block::Block<sp_runtime::generic::header::Header<u64, sp_runtime::traits::BlakeTwo256>, Extrinsic>>, ExecutionContext, Option<u64>, Vec<_>) -> Result<_, _>`
               found fn pointer `fn(&MockApi, &BlockId<sp_runtime::generic::block::Block<sp_runtime::generic::header::Header<u64, sp_runtime::traits::BlakeTwo256>, Extrinsic>>, ExecutionContext, Option<()>, Vec<_>) -> Result<_, _>`
    = note: this error originates in the macro `sp_api::mock_impl_runtime_apis` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error[E0053]: method `Api_test2_runtime_api_impl` has an incompatible type for trait
-  --> $DIR/mock_only_self_reference.rs:12:1
+  --> tests/ui/mock_only_self_reference.rs:12:1
    |
-3  | / sp_api::decl_runtime_apis! {
-4  | |     pub trait Api {
-5  | |         fn test(data: u64);
-6  | |         fn test2(data: u64);
-7  | |     }
-8  | | }
-   | |_- type in trait
-...
 12 |   sp_api::mock_impl_runtime_apis! {
    |   -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |   |
@@ -62,6 +56,16 @@ error[E0053]: method `Api_test2_runtime_api_impl` has an incompatible type for t
 18 | | }
    | |_- help: change the parameter type to match the trait: `Option<u64>`
    |
+note: type in trait
+  --> tests/ui/mock_only_self_reference.rs:3:1
+   |
+3  | / sp_api::decl_runtime_apis! {
+4  | |     pub trait Api {
+5  | |         fn test(data: u64);
+6  | |         fn test2(data: u64);
+7  | |     }
+8  | | }
+   | |_^
    = note: expected fn pointer `fn(&MockApi, &BlockId<sp_runtime::generic::block::Block<sp_runtime::generic::header::Header<u64, sp_runtime::traits::BlakeTwo256>, Extrinsic>>, ExecutionContext, Option<u64>, Vec<_>) -> Result<_, _>`
               found fn pointer `fn(&MockApi, &BlockId<sp_runtime::generic::block::Block<sp_runtime::generic::header::Header<u64, sp_runtime::traits::BlakeTwo256>, Extrinsic>>, ExecutionContext, Option<()>, Vec<_>) -> Result<_, _>`
    = note: this error originates in the macro `sp_api::mock_impl_runtime_apis` (in Nightly builds, run with -Z macro-backtrace for more info)

substrate/primitives/api/test/tests/ui/type_reference_in_impl_runtime_apis_call.stderr

@@ -1,28 +1,23 @@
 error[E0053]: method `test` has an incompatible type for trait
-  --> $DIR/type_reference_in_impl_runtime_apis_call.rs:19:17
+  --> tests/ui/type_reference_in_impl_runtime_apis_call.rs:19:17
    |
-13 |         fn test(data: u64);
-   |                       --- type in trait
-...
 19 |         fn test(data: &u64) {
    |                       ^^^^
    |                       |
    |                       expected `u64`, found `&u64`
    |                       help: change the parameter type to match the trait: `u64`
    |
+note: type in trait
+  --> tests/ui/type_reference_in_impl_runtime_apis_call.rs:13:17
+   |
+13 |         fn test(data: u64);
+   |                       ^^^
    = note: expected fn pointer `fn(u64)`
               found fn pointer `fn(&u64)`
 
 error[E0053]: method `Api_test_runtime_api_impl` has an incompatible type for trait
-  --> $DIR/type_reference_in_impl_runtime_apis_call.rs:17:1
+  --> tests/ui/type_reference_in_impl_runtime_apis_call.rs:17:1
    |
-11 | / sp_api::decl_runtime_apis! {
-12 | |     pub trait Api {
-13 | |         fn test(data: u64);
-14 | |     }
-15 | | }
-   | |_- type in trait
-16 |
 17 |   sp_api::impl_runtime_apis! {
    |   -^^^^^^^^^^^^^^^^^^^^^^^^^
    |   |
@@ -36,12 +31,21 @@ error[E0053]: method `Api_test_runtime_api_impl` has an incompatible type for tr
 35 | | }
    | |_- help: change the parameter type to match the trait: `std::option::Option<u64>`
    |
+note: type in trait
+  --> tests/ui/type_reference_in_impl_runtime_apis_call.rs:11:1
+   |
+11 | / sp_api::decl_runtime_apis! {
+12 | |     pub trait Api {
+13 | |         fn test(data: u64);
+14 | |     }
+15 | | }
+   | |_^
    = note: expected fn pointer `fn(&RuntimeApiImpl<__SR_API_BLOCK__, RuntimeApiImplCall>, &BlockId<__SR_API_BLOCK__>, ExecutionContext, std::option::Option<u64>, Vec<_>) -> Result<_, _>`
               found fn pointer `fn(&RuntimeApiImpl<__SR_API_BLOCK__, RuntimeApiImplCall>, &BlockId<__SR_API_BLOCK__>, ExecutionContext, std::option::Option<&u64>, Vec<_>) -> Result<_, _>`
    = note: this error originates in the macro `sp_api::impl_runtime_apis` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error[E0308]: mismatched types
-  --> $DIR/type_reference_in_impl_runtime_apis_call.rs:17:1
+  --> tests/ui/type_reference_in_impl_runtime_apis_call.rs:17:1
    |
 17 | / sp_api::impl_runtime_apis! {
 18 | |     impl self::Api<Block> for Runtime {
@@ -55,7 +59,7 @@ error[E0308]: mismatched types
    = note: this error originates in the macro `sp_api::impl_runtime_apis` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error[E0308]: mismatched types
-  --> $DIR/type_reference_in_impl_runtime_apis_call.rs:19:11
+  --> tests/ui/type_reference_in_impl_runtime_apis_call.rs:19:11
    |
 19 |         fn test(data: &u64) {
    |                 ^^^^^^^ expected `u64`, found `&u64`

substrate/primitives/runtime-interface/tests/ui.rs

@@ -20,6 +20,11 @@ use std::env;
 #[rustversion::attr(not(stable), ignore)]
 #[test]
 fn ui() {
+	// Only run the ui tests when `RUN_UI_TESTS` is set.
+	if env::var("RUN_UI_TESTS").is_err() {
+		return
+	}
+
 	// As trybuild is using `cargo check`, we don't need the real WASM binaries.
 	env::set_var("SKIP_WASM_BUILD", "1");
 

substrate/primitives/state-machine/src/in_memory_backend.rs

@@ -59,7 +59,7 @@ where
 	) {
 		let (top, child) = changes.into_iter().partition::<Vec<_>, _>(|v| v.0.is_none());
 		let (root, transaction) = self.full_storage_root(
-			top.iter().map(|(_, v)| v).flatten().map(|(k, v)| (&k[..], v.as_deref())),
+			top.iter().flat_map(|(_, v)| v).map(|(k, v)| (&k[..], v.as_deref())),
 			child.iter().filter_map(|v| {
 				v.0.as_ref().map(|c| (c, v.1.iter().map(|(k, v)| (&k[..], v.as_deref()))))
 			}),

substrate/primitives/state-machine/src/trie_backend_essence.rs

@@ -580,16 +580,15 @@ impl<'a, S: 'a + TrieBackendStorage<H>, H: Hasher> hash_db::HashDB<H, DBValue>
 	for Ephemeral<'a, S, H>
 {
 	fn get(&self, key: &H::Out, prefix: Prefix) -> Option<DBValue> {
-		if let Some(val) = HashDB::get(self.overlay, key, prefix) {
-			Some(val)
-		} else {
-			match self.storage.get(&key, prefix) {
+		match HashDB::get(self.overlay, key, prefix) {
+			Some(val) => Some(val),
+			None => match self.storage.get(&key, prefix) {
 				Ok(x) => x,
 				Err(e) => {
 					warn!(target: "trie", "Failed to read from DB: {}", e);
 					None
 				},
-			}
+			},
 		}
 	}
 

substrate/primitives/version/src/embed.rs

@@ -44,8 +44,7 @@ pub fn embed_runtime_version(
 		.apis
 		.iter()
 		.map(Encode::encode)
-		.map(|v| v.into_iter())
-		.flatten()
+		.flat_map(|v| v.into_iter())
 		.collect::<Vec<u8>>();
 
 	module.set_custom_section("runtime_apis", apis);

substrate/utils/frame/remote-externalities/src/lib.rs

@@ -848,7 +848,7 @@ impl<B: BlockT + DeserializeOwned> Builder<B> {
 		info!(
 			target: LOG_TARGET,
 			"injecting a total of {} child keys",
-			child_kv.iter().map(|(_, kv)| kv).flatten().count()
+			child_kv.iter().flat_map(|(_, kv)| kv).count(),
 		);
 
 		for (info, key_values) in child_kv {