Upgrade dependencies whenever “easy” (#3556)

* Update all dependencies

* Upgrade dependencies whenever “easy”

“easy” means that there are no major changes required.

* Fix build and bump paste dependency to 0.1.6

* Remove dead code

* Re-add = dependency for futures-preview

* Add missing std features for runtime-io

* Remove git dependencies

as updated versions have been published to crates.io

* try to debug bug

* For sr-io, "std" should imply "no_oom" and "no_panic_handler".

Otherwise, rustc complains (correctly) about duplicate lang items.

* Add missing "runtime-io/std" features

* Fix compilation errors

* Prevent duplicate lang items

Rust does not allow duplicate lang items.  When compiled without the
`std` feature, `sr-io` defines two lang items.  Therefore, `sr-io`
compiled without `feature = "std"` must not be linked with `std`.

However, `pwasm-utils` and `wasmi-validation` both bring in `std` unless
compiled with `default-features = "false"`.  This caused a duplicate
lang item error.  Building both with `default-features = "false"`
prevents this error.  When building with `feature = "std"`, they should
both be built with the `std` feature, so this feature needs to be
explicitly depended on.

* Bump `impl_version`

* Make tests pass

Three tests used 1 less gas than they had previously.

* Try to un-break build

* Add a Cargo.lock file

* Revert offchain code

* Revert "Revert offchain code"

This reverts commit d216d08cc6ca0344614669c1d24cde3aa5c0d4e2.

* Don’t try to send a body with a GET request

without adding a Transfer-Encoding or Content-Length header.

This has always been wrong, but hyperium/hyper#1925 hid the bug until
hyper was upgraded to 0.12.35.

* Change some more GET requests to POST requests

* Fix excess line width and remove an `extern crate`

* Delete commented-out extern crate

Co-Authored-By: Sergei Pepyakin <sergei@parity.io>

* Fix regression in Cargo.toml files

dev-dependencies need `default-features = false`, too.

* Bump parity-wasm dependency

* Bump `futures-preview`

* Apply suggestions from code review

Co-Authored-By: Bastian Köcher <bkchr@users.noreply.github.com>

* Update Cargo.lock files

* Apply suggestions from code review

Co-Authored-By: Bastian Köcher <bkchr@users.noreply.github.com>

* Update core/service/src/chain_ops.rs

Co-Authored-By: Sergei Pepyakin <sergei@parity.io>

substrate/core/client/Cargo.toml

@@ -5,13 +5,13 @@ authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
 
 [dependencies]
-derive_more = { version = "0.14.0", optional = true }
-fnv = { version = "1.0", optional = true }
-log = { version = "0.4", optional = true }
+derive_more = { version = "0.15.0", optional = true }
+fnv = { version = "1.0.6", optional = true }
+log = { version = "0.4.8", optional = true }
 parking_lot = { version = "0.9.0", optional = true }
-hex = { package = "hex-literal", version = "0.2", optional = true }
-futures = { version = "0.1", optional = true }
-futures03 = { package = "futures-preview", version = "0.3.0-alpha.18", features = ["compat"], optional = true }
+hex-literal = { version = "0.2.1", optional = true }
+futures = { version = "0.1.29", optional = true }
+futures03 = { package = "futures-preview", version = "0.3.0-alpha.19", features = ["compat"], optional = true }
 consensus = { package = "substrate-consensus-common", path = "../consensus/common", optional = true }
 executor = { package = "substrate-executor", path = "../executor", optional = true }
 state-machine = { package = "substrate-state-machine", path = "../state-machine", optional = true }
@@ -30,8 +30,8 @@ sr-api-macros = { path = "../sr-api-macros" }
 header-metadata = { package = "substrate-header-metadata", path = "header-metadata", optional = true }
 
 [dev-dependencies]
-env_logger = "0.6"
-tempfile = "3.1"
+env_logger = "0.6.2"
+tempfile = "3.1.0"
 test-client = { package = "substrate-test-runtime-client", path = "../test-runtime/client" }
 kvdb-memorydb = { git = "https://github.com/paritytech/parity-common", rev="b0317f649ab2c665b7987b8475878fc4d2e1f81d" }
 panic-handler = { package = "substrate-panic-handler", path = "../panic-handler" }
@@ -52,7 +52,7 @@ std = [
 	"derive_more",
 	"fnv",
 	"log",
-	"hex",
+	"hex-literal",
 	"futures",
 	"futures03",
 	"executor",

substrate/core/client/db/Cargo.toml

@@ -6,13 +6,13 @@ edition = "2018"
 
 [dependencies]
 parking_lot = "0.9.0"
-log = "0.4"
+log = "0.4.8"
 kvdb = { git = "https://github.com/paritytech/parity-common", rev="b0317f649ab2c665b7987b8475878fc4d2e1f81d" }
 # FIXME replace with release as soon as our rocksdb changes are released upstream https://github.com/paritytech/parity-common/issues/88
 kvdb-rocksdb = { git = "https://github.com/paritytech/parity-common", rev="b0317f649ab2c665b7987b8475878fc4d2e1f81d", optional = true }
 kvdb-memorydb = { git = "https://github.com/paritytech/parity-common", rev="b0317f649ab2c665b7987b8475878fc4d2e1f81d" }
-linked-hash-map = "0.5"
-hash-db = { version = "0.15.2" }
+linked-hash-map = "0.5.2"
+hash-db = "0.15.2"
 primitives = { package = "substrate-primitives", path = "../../primitives" }
 sr-primitives = {  path = "../../sr-primitives" }
 client = { package = "substrate-client", path = "../../client" }
@@ -27,7 +27,7 @@ header_metadata = { package = "substrate-header-metadata", path = "../header-met
 [dev-dependencies]
 substrate-keyring = { path = "../../keyring" }
 test-client = { package = "substrate-test-runtime-client", path = "../../test-runtime/client" }
-env_logger = { version = "0.6" }
+env_logger = "0.6.2"
 
 [features]
 default = []

substrate/core/client/src/genesis.rs

@@ -54,7 +54,7 @@ mod tests {
 		AccountKeyring, Sr25519Keyring,
 	};
 	use primitives::{Blake2Hasher, map, offchain::NeverOffchainExt};
-	use hex::*;
+	use hex_literal::*;
 
 	native_executor_instance!(
 		Executor,