ci: bump ci image to rust 1.73.0 (#1830)

Co-authored-by: command-bot <>

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

@@ -148,7 +148,11 @@ error[E0277]: the trait bound `Runtime: Config` is not satisfied in `frame_syste
    | ||_- in this macro invocation
 ...  |
    |
-   = note: required because it appears within the type `Event<Runtime>`
+note: required because it appears within the type `Event<Runtime>`
+  --> $WORKSPACE/substrate/frame/system/src/lib.rs
+   |
+   |     pub enum Event<T: Config> {
+   |              ^^^^^
 note: required by a bound in `From`
   --> $RUST/core/src/convert/mod.rs
    |
@@ -169,7 +173,11 @@ error[E0277]: the trait bound `Runtime: Config` is not satisfied in `frame_syste
    | ||_- in this macro invocation
 ...  |
    |
-   = note: required because it appears within the type `Event<Runtime>`
+note: required because it appears within the type `Event<Runtime>`
+  --> $WORKSPACE/substrate/frame/system/src/lib.rs
+   |
+   |     pub enum Event<T: Config> {
+   |              ^^^^^
 note: required by a bound in `TryInto`
   --> $RUST/core/src/convert/mod.rs
    |

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

@@ -5,4 +5,4 @@ error[E0277]: `<T as Config>::C` doesn't implement `std::fmt::Debug`
    |     ^ `<T as Config>::C` cannot be formatted using `{:?}` because it doesn't implement `std::fmt::Debug`
    |
    = help: the trait `std::fmt::Debug` is not implemented for `<T as Config>::C`
-   = note: required for the cast from `<T as Config>::C` to the object type `dyn std::fmt::Debug`
+   = note: required for the cast from `&<T as Config>::C` to `&dyn std::fmt::Debug`

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

@@ -19,7 +19,7 @@ error[E0277]: `<T as pallet::Config>::Bar` doesn't implement `std::fmt::Debug`
    |
    = help: the trait `std::fmt::Debug` is not implemented for `<T as pallet::Config>::Bar`
    = note: required for `&<T as pallet::Config>::Bar` to implement `std::fmt::Debug`
-   = note: required for the cast from `&<T as pallet::Config>::Bar` to the object type `dyn std::fmt::Debug`
+   = note: required for the cast from `&&<T as pallet::Config>::Bar` to `&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:38:36

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

@@ -19,7 +19,7 @@ error[E0277]: `<T as pallet::Config>::Bar` doesn't implement `std::fmt::Debug`
    |
    = help: the trait `std::fmt::Debug` is not implemented for `<T as pallet::Config>::Bar`
    = note: required for `&<T as pallet::Config>::Bar` to implement `std::fmt::Debug`
-   = note: required for the cast from `&<T as pallet::Config>::Bar` to the object type `dyn std::fmt::Debug`
+   = note: required for the cast from `&&<T as pallet::Config>::Bar` to `&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:38:36

substrate/frame/support/test/tests/pallet_ui/call_argument_invalid_bound_3.stderr

@@ -20,7 +20,7 @@ error[E0277]: `Bar` doesn't implement `std::fmt::Debug`
    = help: the trait `std::fmt::Debug` is not implemented for `Bar`
    = note: add `#[derive(Debug)]` to `Bar` or manually `impl std::fmt::Debug for Bar`
    = note: required for `&Bar` to implement `std::fmt::Debug`
-   = note: required for the cast from `&Bar` to the object type `dyn std::fmt::Debug`
+   = note: required for the cast from `&&Bar` to `&dyn std::fmt::Debug`
 help: consider annotating `Bar` with `#[derive(Debug)]`
    |
 34 +     #[derive(Debug)]

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

@@ -30,13 +30,13 @@ error[E0277]: the trait bound `Vec<u8>: MaxEncodedLen` is not satisfied
    |               ^^^^^^ the trait `MaxEncodedLen` is not implemented for `Vec<u8>`
    |
    = help: the following other types implement trait `MaxEncodedLen`:
-             ()
-             (TupleElement0, TupleElement1)
-             (TupleElement0, TupleElement1, TupleElement2)
-             (TupleElement0, TupleElement1, TupleElement2, TupleElement3)
-             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4)
-             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5)
-             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6)
-             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7)
+             bool
+             i8
+             i16
+             i32
+             i64
+             i128
+             u8
+             u16
            and $N others
    = note: required for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageMyStorage<T>, Vec<u8>>` to implement `StorageInfoTrait`

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

@@ -5,13 +5,13 @@ error[E0277]: the trait bound `MyError: PalletError` is not satisfied
    | ^^^^^^^^^^^^^^^^^^^^^^^^ the trait `PalletError` is not implemented for `MyError`
    |
    = help: the following other types implement trait `PalletError`:
-             ()
-             (TupleElement0, TupleElement1)
-             (TupleElement0, TupleElement1, TupleElement2)
-             (TupleElement0, TupleElement1, TupleElement2, TupleElement3)
-             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4)
-             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5)
-             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6)
-             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7)
+             bool
+             i8
+             i16
+             i32
+             i64
+             i128
+             u8
+             u16
            and $N others
    = 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

@@ -18,4 +18,4 @@ error[E0277]: `<T as pallet::Config>::Bar` doesn't implement `std::fmt::Debug`
    |
    = help: the trait `std::fmt::Debug` is not implemented for `<T as pallet::Config>::Bar`
    = note: required for `&<T as pallet::Config>::Bar` to implement `std::fmt::Debug`
-   = note: required for the cast from `&<T as pallet::Config>::Bar` to the object type `dyn std::fmt::Debug`
+   = note: required for the cast from `&&<T as pallet::Config>::Bar` to `&dyn std::fmt::Debug`

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

@@ -4,8 +4,8 @@ error[E0046]: not all trait items implemented, missing: `Call`, `Error`, `INHERE
 36 |     impl<T: Config> ProvideInherent for Pallet<T> {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ missing `Call`, `Error`, `INHERENT_IDENTIFIER`, `create_inherent`, `is_inherent` in implementation
    |
-   = help: implement the missing item: `type Call = Type;`
-   = help: implement the missing item: `type Error = Type;`
+   = help: implement the missing item: `type Call = /* Type */;`
+   = help: implement the missing item: `type Error = /* Type */;`
    = help: implement the missing item: `const INHERENT_IDENTIFIER: [u8; 8] = value;`
    = help: implement the missing item: `fn create_inherent(_: &InherentData) -> std::option::Option<<Self as ProvideInherent>::Call> { todo!() }`
    = help: implement the missing item: `fn is_inherent(_: &<Self as ProvideInherent>::Call) -> bool { todo!() }`

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

@@ -5,10 +5,10 @@ error[E0277]: the trait bound `Bar: WrapperTypeDecode` is not satisfied
    |               ^^^^^^^^^^^^^^^^^^^^ the trait `WrapperTypeDecode` is not implemented for `Bar`
    |
    = help: the following other types implement trait `WrapperTypeDecode`:
-             Arc<T>
              Box<T>
-             Rc<T>
              frame_support::sp_runtime::sp_application_crypto::sp_core::Bytes
+             Rc<T>
+             Arc<T>
    = note: required for `Bar` to implement `Decode`
    = note: required for `Bar` to implement `FullCodec`
    = note: required for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>` to implement `PartialStorageInfoTrait`
@@ -20,14 +20,14 @@ error[E0277]: the trait bound `Bar: EncodeLike` is not satisfied
    |               ^^^^^^^^^^^^^^^^^^^^ the trait `EncodeLike` is not implemented for `Bar`
    |
    = help: the following other types implement trait `EncodeLike<T>`:
-             <&&T as EncodeLike<T>>
-             <&T as EncodeLike<T>>
-             <&T as EncodeLike>
-             <&[(K, V)] as EncodeLike<BTreeMap<LikeK, LikeV>>>
-             <&[(T,)] as EncodeLike<BTreeSet<LikeT>>>
-             <&[(T,)] as EncodeLike<BinaryHeap<LikeT>>>
-             <&[(T,)] as EncodeLike<LinkedList<LikeT>>>
-             <&[T] as EncodeLike<Vec<U>>>
+             <bool as EncodeLike>
+             <i8 as EncodeLike>
+             <i16 as EncodeLike>
+             <i32 as EncodeLike>
+             <i64 as EncodeLike>
+             <i128 as EncodeLike>
+             <u8 as EncodeLike>
+             <u16 as EncodeLike>
            and $N others
    = note: required for `Bar` to implement `FullEncode`
    = note: required for `Bar` to implement `FullCodec`
@@ -40,14 +40,14 @@ error[E0277]: the trait bound `Bar: WrapperTypeEncode` is not satisfied
    |               ^^^^^^^^^^^^^^^^^^^^ the trait `WrapperTypeEncode` is not implemented for `Bar`
    |
    = help: the following other types implement trait `WrapperTypeEncode`:
-             &T
-             &mut T
-             Arc<T>
              Box<T>
-             Cow<'a, T>
-             Rc<T>
-             Vec<T>
              bytes::bytes::Bytes
+             Cow<'a, T>
+             parity_scale_codec::Ref<'a, T, U>
+             frame_support::sp_runtime::sp_application_crypto::sp_core::Bytes
+             Rc<T>
+             Arc<T>
+             Vec<T>
            and $N others
    = note: required for `Bar` to implement `Encode`
    = note: required for `Bar` to implement `FullEncode`
@@ -61,14 +61,14 @@ error[E0277]: the trait bound `Bar: TypeInfo` is not satisfied
    |               ^^^^^^^ the trait `TypeInfo` is not implemented for `Bar`
    |
    = help: the following other types implement trait `TypeInfo`:
-             &T
-             &mut T
-             ()
-             (A, B)
-             (A, B, C)
-             (A, B, C, D)
-             (A, B, C, D, E)
-             (A, B, C, D, E, F)
+             bool
+             char
+             i8
+             i16
+             i32
+             i64
+             i128
+             u8
            and $N others
    = note: required for `Bar` to implement `StaticTypeInfo`
    = note: required for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>` to implement `StorageEntryMetadataBuilder`
@@ -80,10 +80,10 @@ error[E0277]: the trait bound `Bar: WrapperTypeDecode` is not satisfied
    |               ^^^^^^^ the trait `WrapperTypeDecode` is not implemented for `Bar`
    |
    = help: the following other types implement trait `WrapperTypeDecode`:
-             Arc<T>
              Box<T>
-             Rc<T>
              frame_support::sp_runtime::sp_application_crypto::sp_core::Bytes
+             Rc<T>
+             Arc<T>
    = note: required for `Bar` to implement `Decode`
    = note: required for `Bar` to implement `FullCodec`
    = note: required for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>` to implement `StorageEntryMetadataBuilder`
@@ -95,14 +95,14 @@ error[E0277]: the trait bound `Bar: EncodeLike` is not satisfied
    |               ^^^^^^^ the trait `EncodeLike` is not implemented for `Bar`
    |
    = help: the following other types implement trait `EncodeLike<T>`:
-             <&&T as EncodeLike<T>>
-             <&T as EncodeLike<T>>
-             <&T as EncodeLike>
-             <&[(K, V)] as EncodeLike<BTreeMap<LikeK, LikeV>>>
-             <&[(T,)] as EncodeLike<BTreeSet<LikeT>>>
-             <&[(T,)] as EncodeLike<BinaryHeap<LikeT>>>
-             <&[(T,)] as EncodeLike<LinkedList<LikeT>>>
-             <&[T] as EncodeLike<Vec<U>>>
+             <bool as EncodeLike>
+             <i8 as EncodeLike>
+             <i16 as EncodeLike>
+             <i32 as EncodeLike>
+             <i64 as EncodeLike>
+             <i128 as EncodeLike>
+             <u8 as EncodeLike>
+             <u16 as EncodeLike>
            and $N others
    = note: required for `Bar` to implement `FullEncode`
    = note: required for `Bar` to implement `FullCodec`
@@ -115,14 +115,14 @@ error[E0277]: the trait bound `Bar: WrapperTypeEncode` is not satisfied
    |               ^^^^^^^ the trait `WrapperTypeEncode` is not implemented for `Bar`
    |
    = help: the following other types implement trait `WrapperTypeEncode`:
-             &T
-             &mut T
-             Arc<T>
              Box<T>
-             Cow<'a, T>
-             Rc<T>
-             Vec<T>
              bytes::bytes::Bytes
+             Cow<'a, T>
+             parity_scale_codec::Ref<'a, T, U>
+             frame_support::sp_runtime::sp_application_crypto::sp_core::Bytes
+             Rc<T>
+             Arc<T>
+             Vec<T>
            and $N others
    = note: required for `Bar` to implement `Encode`
    = note: required for `Bar` to implement `FullEncode`

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

@@ -5,10 +5,10 @@ error[E0277]: the trait bound `Bar: WrapperTypeDecode` is not satisfied
    |               ^^^^^^^^^^^^^^^^^^^^ the trait `WrapperTypeDecode` is not implemented for `Bar`
    |
    = help: the following other types implement trait `WrapperTypeDecode`:
-             Arc<T>
              Box<T>
-             Rc<T>
              frame_support::sp_runtime::sp_application_crypto::sp_core::Bytes
+             Rc<T>
+             Arc<T>
    = note: required for `Bar` to implement `Decode`
    = note: required for `Bar` to implement `FullCodec`
    = note: required for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>` to implement `PartialStorageInfoTrait`
@@ -20,14 +20,14 @@ error[E0277]: the trait bound `Bar: EncodeLike` is not satisfied
    |               ^^^^^^^^^^^^^^^^^^^^ the trait `EncodeLike` is not implemented for `Bar`
    |
    = help: the following other types implement trait `EncodeLike<T>`:
-             <&&T as EncodeLike<T>>
-             <&T as EncodeLike<T>>
-             <&T as EncodeLike>
-             <&[(K, V)] as EncodeLike<BTreeMap<LikeK, LikeV>>>
-             <&[(T,)] as EncodeLike<BTreeSet<LikeT>>>
-             <&[(T,)] as EncodeLike<BinaryHeap<LikeT>>>
-             <&[(T,)] as EncodeLike<LinkedList<LikeT>>>
-             <&[T] as EncodeLike<Vec<U>>>
+             <bool as EncodeLike>
+             <i8 as EncodeLike>
+             <i16 as EncodeLike>
+             <i32 as EncodeLike>
+             <i64 as EncodeLike>
+             <i128 as EncodeLike>
+             <u8 as EncodeLike>
+             <u16 as EncodeLike>
            and $N others
    = note: required for `Bar` to implement `FullEncode`
    = note: required for `Bar` to implement `FullCodec`
@@ -40,14 +40,14 @@ error[E0277]: the trait bound `Bar: WrapperTypeEncode` is not satisfied
    |               ^^^^^^^^^^^^^^^^^^^^ the trait `WrapperTypeEncode` is not implemented for `Bar`
    |
    = help: the following other types implement trait `WrapperTypeEncode`:
-             &T
-             &mut T
-             Arc<T>
              Box<T>
-             Cow<'a, T>
-             Rc<T>
-             Vec<T>
              bytes::bytes::Bytes
+             Cow<'a, T>
+             parity_scale_codec::Ref<'a, T, U>
+             frame_support::sp_runtime::sp_application_crypto::sp_core::Bytes
+             Rc<T>
+             Arc<T>
+             Vec<T>
            and $N others
    = note: required for `Bar` to implement `Encode`
    = note: required for `Bar` to implement `FullEncode`
@@ -61,14 +61,14 @@ error[E0277]: the trait bound `Bar: TypeInfo` is not satisfied
    |               ^^^^^^^ the trait `TypeInfo` is not implemented for `Bar`
    |
    = help: the following other types implement trait `TypeInfo`:
-             &T
-             &mut T
-             ()
-             (A, B)
-             (A, B, C)
-             (A, B, C, D)
-             (A, B, C, D, E)
-             (A, B, C, D, E, F)
+             bool
+             char
+             i8
+             i16
+             i32
+             i64
+             i128
+             u8
            and $N others
    = note: required for `Bar` to implement `StaticTypeInfo`
    = note: required for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>` to implement `StorageEntryMetadataBuilder`
@@ -80,10 +80,10 @@ error[E0277]: the trait bound `Bar: WrapperTypeDecode` is not satisfied
    |               ^^^^^^^ the trait `WrapperTypeDecode` is not implemented for `Bar`
    |
    = help: the following other types implement trait `WrapperTypeDecode`:
-             Arc<T>
              Box<T>
-             Rc<T>
              frame_support::sp_runtime::sp_application_crypto::sp_core::Bytes
+             Rc<T>
+             Arc<T>
    = note: required for `Bar` to implement `Decode`
    = note: required for `Bar` to implement `FullCodec`
    = note: required for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>` to implement `StorageEntryMetadataBuilder`
@@ -95,14 +95,14 @@ error[E0277]: the trait bound `Bar: EncodeLike` is not satisfied
    |               ^^^^^^^ the trait `EncodeLike` is not implemented for `Bar`
    |
    = help: the following other types implement trait `EncodeLike<T>`:
-             <&&T as EncodeLike<T>>
-             <&T as EncodeLike<T>>
-             <&T as EncodeLike>
-             <&[(K, V)] as EncodeLike<BTreeMap<LikeK, LikeV>>>
-             <&[(T,)] as EncodeLike<BTreeSet<LikeT>>>
-             <&[(T,)] as EncodeLike<BinaryHeap<LikeT>>>
-             <&[(T,)] as EncodeLike<LinkedList<LikeT>>>
-             <&[T] as EncodeLike<Vec<U>>>
+             <bool as EncodeLike>
+             <i8 as EncodeLike>
+             <i16 as EncodeLike>
+             <i32 as EncodeLike>
+             <i64 as EncodeLike>
+             <i128 as EncodeLike>
+             <u8 as EncodeLike>
+             <u16 as EncodeLike>
            and $N others
    = note: required for `Bar` to implement `FullEncode`
    = note: required for `Bar` to implement `FullCodec`
@@ -115,14 +115,14 @@ error[E0277]: the trait bound `Bar: WrapperTypeEncode` is not satisfied
    |               ^^^^^^^ the trait `WrapperTypeEncode` is not implemented for `Bar`
    |
    = help: the following other types implement trait `WrapperTypeEncode`:
-             &T
-             &mut T
-             Arc<T>
              Box<T>
-             Cow<'a, T>
-             Rc<T>
-             Vec<T>
              bytes::bytes::Bytes
+             Cow<'a, T>
+             parity_scale_codec::Ref<'a, T, U>
+             frame_support::sp_runtime::sp_application_crypto::sp_core::Bytes
+             Rc<T>
+             Arc<T>
+             Vec<T>
            and $N others
    = note: required for `Bar` to implement `Encode`
    = note: required for `Bar` to implement `FullEncode`

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

@@ -5,13 +5,13 @@ error[E0277]: the trait bound `Bar: MaxEncodedLen` is not satisfied
    |               ^^^^^^ the trait `MaxEncodedLen` is not implemented for `Bar`
    |
    = help: the following other types implement trait `MaxEncodedLen`:
-             ()
-             (TupleElement0, TupleElement1)
-             (TupleElement0, TupleElement1, TupleElement2)
-             (TupleElement0, TupleElement1, TupleElement2, TupleElement3)
-             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4)
-             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5)
-             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6)
-             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7)
+             bool
+             i8
+             i16
+             i32
+             i64
+             i128
+             u8
+             u16
            and $N others
    = note: required for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageFoo<T>, Bar>` to implement `StorageInfoTrait`

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

@@ -5,14 +5,14 @@ error[E0277]: the trait bound `Bar: MaxEncodedLen` is not satisfied
    |               ^^^^^^ the trait `MaxEncodedLen` is not implemented for `Bar`
    |
    = help: the following other types implement trait `MaxEncodedLen`:
-             ()
-             (TupleElement0, TupleElement1)
-             (TupleElement0, TupleElement1, TupleElement2)
-             (TupleElement0, TupleElement1, TupleElement2, TupleElement3)
-             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4)
-             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5)
-             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6)
-             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7)
+             bool
+             i8
+             i16
+             i32
+             i64
+             i128
+             u8
+             u16
            and $N others
-   = note: required for `Key<frame_support::Twox64Concat, Bar>` to implement `KeyGeneratorMaxEncodedLen`
-   = note: required for `frame_support::pallet_prelude::StorageNMap<_GeneratedPrefixForStorageFoo<T>, Key<frame_support::Twox64Concat, Bar>, u32>` to implement `StorageInfoTrait`
+   = note: required for `NMapKey<frame_support::Twox64Concat, Bar>` to implement `KeyGeneratorMaxEncodedLen`
+   = note: required for `frame_support::pallet_prelude::StorageNMap<_GeneratedPrefixForStorageFoo<T>, NMapKey<frame_support::Twox64Concat, Bar>, u32>` to implement `StorageInfoTrait`