google · google-pr-creation-bot · Jan 1, 2025
diff --git a/Cargo.toml b/Cargo.toml
@@ -47,7 +47,7 @@ zerocopy-diagnostic-on-unimplemented = "1.78.0"
 [package.metadata.ci]
 # The versions of the stable and nightly compiler toolchains to use in CI.
 pinned-stable = "1.83.0"
-pinned-nightly = "nightly-2024-11-06"
+pinned-nightly = "nightly-2024-12-31"
 
 [package.metadata.docs.rs]
 all-features = true

diff --git a/tests/ui-nightly/invalid-impls/invalid-impls.stderr b/tests/ui-nightly/invalid-impls/invalid-impls.stderr
@@ -21,7 +21,7 @@ note: required by a bound in `_::Subtrait`
 26 | impl_or_verify!(T => TryFromBytes for Foo<T>);
    | --------------------------------------------- in this macro invocation
    = note: this error originates in the derive macro `FromBytes` which comes from the expansion of the macro `impl_or_verify` (in Nightly builds, run with -Z macro-backtrace for more info)
-help: consider restricting type parameter `T`
+help: consider restricting type parameter `T` with trait `TryFromBytes`
    |
 26 | impl_or_verify!(T: zerocopy::TryFromBytes => TryFromBytes for Foo<T>);
    |                  ++++++++++++++++++++++++
@@ -49,7 +49,7 @@ note: required by a bound in `_::Subtrait`
 27 | impl_or_verify!(T => FromZeros for Foo<T>);
    | ------------------------------------------ in this macro invocation
    = note: this error originates in the derive macro `FromBytes` which comes from the expansion of the macro `impl_or_verify` (in Nightly builds, run with -Z macro-backtrace for more info)
-help: consider restricting type parameter `T`
+help: consider restricting type parameter `T` with trait `FromZeros`
    |
 27 | impl_or_verify!(T: zerocopy::FromZeros => FromZeros for Foo<T>);
    |                  +++++++++++++++++++++
@@ -77,7 +77,7 @@ note: required by a bound in `_::Subtrait`
 28 | impl_or_verify!(T => FromBytes for Foo<T>);
    | ------------------------------------------ in this macro invocation
    = note: this error originates in the derive macro `FromBytes` which comes from the expansion of the macro `impl_or_verify` (in Nightly builds, run with -Z macro-backtrace for more info)
-help: consider restricting type parameter `T`
+help: consider restricting type parameter `T` with trait `FromBytes`
    |
 28 | impl_or_verify!(T: zerocopy::FromBytes => FromBytes for Foo<T>);
    |                  +++++++++++++++++++++
@@ -105,7 +105,7 @@ note: required by a bound in `_::Subtrait`
 29 | impl_or_verify!(T => IntoBytes for Foo<T>);
    | ------------------------------------------ in this macro invocation
    = note: this error originates in the derive macro `IntoBytes` which comes from the expansion of the macro `impl_or_verify` (in Nightly builds, run with -Z macro-backtrace for more info)
-help: consider restricting type parameter `T`
+help: consider restricting type parameter `T` with trait `IntoBytes`
    |
 29 | impl_or_verify!(T: zerocopy::IntoBytes => IntoBytes for Foo<T>);
    |                  +++++++++++++++++++++
@@ -133,7 +133,7 @@ note: required by a bound in `_::Subtrait`
 30 | impl_or_verify!(T => Unaligned for Foo<T>);
    | ------------------------------------------ in this macro invocation
    = note: this error originates in the derive macro `Unaligned` which comes from the expansion of the macro `impl_or_verify` (in Nightly builds, run with -Z macro-backtrace for more info)
-help: consider restricting type parameter `T`
+help: consider restricting type parameter `T` with trait `Unaligned`
    |
 30 | impl_or_verify!(T: zerocopy::Unaligned => Unaligned for Foo<T>);
    |                  +++++++++++++++++++++
diff --git a/tests/ui-nightly/transmute-mut-const.stderr b/tests/ui-nightly/transmute-mut-const.stderr
@@ -13,7 +13,7 @@ note: `const` item defined here
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    = note: `#[warn(const_item_mutation)]` on by default
 
-error[E0015]: cannot call non-const fn `transmute_mut::<'_, '_, [u8; 2], [u8; 2]>` in constants
+error[E0015]: cannot call non-const function `transmute_mut::<'_, '_, [u8; 2], [u8; 2]>` in constants
   --> tests/ui-nightly/transmute-mut-const.rs:20:37
    |
 20 | const CONST_CONTEXT: &mut [u8; 2] = transmute_mut!(&mut ARRAY_OF_U8S);

diff --git a/tests/ui-nightly/transmute-mut-dst-unsized.stderr b/tests/ui-nightly/transmute-mut-dst-unsized.stderr
@@ -48,7 +48,7 @@ error[E0277]: the size for values of type `[u8]` cannot be known at compilation
    |
    = help: the trait `Sized` is not implemented for `[u8]`
 note: required by an implicit `Sized` bound in `std::intrinsics::transmute`
-  --> $RUST/core/src/intrinsics.rs
+  --> $RUST/core/src/intrinsics/mod.rs
    |
    | pub const unsafe fn transmute<Src, Dst>(_src: Src) -> Dst {
    |                                    ^^^ required by the implicit `Sized` requirement on this type parameter in `transmute`

diff --git a/tests/ui-nightly/transmute-mut-src-dst-not-references.stderr b/tests/ui-nightly/transmute-mut-src-dst-not-references.stderr
@@ -20,8 +20,8 @@ warning: this function depends on never type fallback being `()`
 17 | const SRC_DST_NOT_REFERENCES: &mut usize = transmute_mut!(0usize);
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/never-type-fallback.html>
    = help: specify the types explicitly
 note: in edition 2024, the requirement `!: FromBytes` will fail
   --> tests/ui-nightly/transmute-mut-src-dst-not-references.rs:17:44
@@ -42,8 +42,8 @@ warning: never type fallback affects this call to an `unsafe` function
 17 | const SRC_DST_NOT_REFERENCES: &mut usize = transmute_mut!(0usize);
    |                                            ^^^^^^^^^^^^^^^^^^^^^^
    |
-   = warning: this will change its meaning in a future release!
-   = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
+   = warning: this changes meaning in Rust 2024 and in a future release in all editions!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/never-type-fallback.html>
    = help: specify the type explicitly
    = note: `#[warn(never_type_fallback_flowing_into_unsafe)]` on by default
    = note: this warning originates in the macro `$crate::assert_size_eq` which comes from the expansion of the macro `transmute_mut` (in Nightly builds, run with -Z macro-backtrace for more info)
diff --git a/tests/ui-nightly/transmute-mut-src-dst-unsized.stderr b/tests/ui-nightly/transmute-mut-src-dst-unsized.stderr
@@ -145,7 +145,7 @@ error[E0277]: the size for values of type `[u8]` cannot be known at compilation
    |
    = help: the trait `Sized` is not implemented for `[u8]`
 note: required by an implicit `Sized` bound in `std::intrinsics::transmute`
-  --> $RUST/core/src/intrinsics.rs
+  --> $RUST/core/src/intrinsics/mod.rs
    |
    | pub const unsafe fn transmute<Src, Dst>(_src: Src) -> Dst {
    |                                    ^^^ required by the implicit `Sized` requirement on this type parameter in `transmute`

diff --git a/tests/ui-nightly/transmute-mut-src-immutable.stderr b/tests/ui-nightly/transmute-mut-src-immutable.stderr
@@ -16,8 +16,8 @@ warning: this function depends on never type fallback being `()`
 15 | fn ref_src_immutable() {
    | ^^^^^^^^^^^^^^^^^^^^^^
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/never-type-fallback.html>
    = help: specify the types explicitly
 note: in edition 2024, the requirement `!: FromBytes` will fail
   --> tests/ui-nightly/transmute-mut-src-immutable.rs:17:22
@@ -38,8 +38,8 @@ warning: never type fallback affects this call to an `unsafe` function
 17 |     let _: &mut u8 = transmute_mut!(&0u8);
    |                      ^^^^^^^^^^^^^^^^^^^^
    |
-   = warning: this will change its meaning in a future release!
-   = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
+   = warning: this changes meaning in Rust 2024 and in a future release in all editions!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/never-type-fallback.html>
    = help: specify the type explicitly
    = note: `#[warn(never_type_fallback_flowing_into_unsafe)]` on by default
    = note: this warning originates in the macro `$crate::assert_size_eq` which comes from the expansion of the macro `transmute_mut` (in Nightly builds, run with -Z macro-backtrace for more info)
diff --git a/tests/ui-nightly/transmute-mut-src-not-a-reference.stderr b/tests/ui-nightly/transmute-mut-src-not-a-reference.stderr
@@ -20,8 +20,8 @@ warning: this function depends on never type fallback being `()`
 17 | const SRC_NOT_A_REFERENCE: &mut u8 = transmute_mut!(0usize);
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/never-type-fallback.html>
    = help: specify the types explicitly
 note: in edition 2024, the requirement `!: FromBytes` will fail
   --> tests/ui-nightly/transmute-mut-src-not-a-reference.rs:17:38
@@ -42,8 +42,8 @@ warning: never type fallback affects this call to an `unsafe` function
 17 | const SRC_NOT_A_REFERENCE: &mut u8 = transmute_mut!(0usize);
    |                                      ^^^^^^^^^^^^^^^^^^^^^^
    |
-   = warning: this will change its meaning in a future release!
-   = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
+   = warning: this changes meaning in Rust 2024 and in a future release in all editions!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/never-type-fallback.html>
    = help: specify the type explicitly
    = note: `#[warn(never_type_fallback_flowing_into_unsafe)]` on by default
    = note: this warning originates in the macro `$crate::assert_size_eq` which comes from the expansion of the macro `transmute_mut` (in Nightly builds, run with -Z macro-backtrace for more info)
diff --git a/tests/ui-nightly/transmute-ref-dst-unsized.stderr b/tests/ui-nightly/transmute-ref-dst-unsized.stderr
@@ -48,7 +48,7 @@ error[E0277]: the size for values of type `[u8]` cannot be known at compilation
    |
    = help: the trait `Sized` is not implemented for `[u8]`
 note: required by an implicit `Sized` bound in `std::intrinsics::transmute`
-  --> $RUST/core/src/intrinsics.rs
+  --> $RUST/core/src/intrinsics/mod.rs
    |
    | pub const unsafe fn transmute<Src, Dst>(_src: Src) -> Dst {
    |                                    ^^^ required by the implicit `Sized` requirement on this type parameter in `transmute`

diff --git a/tests/ui-nightly/transmute-ref-src-dst-not-references.stderr b/tests/ui-nightly/transmute-ref-src-dst-not-references.stderr
@@ -83,8 +83,8 @@ warning: this function depends on never type fallback being `()`
 17 | const SRC_DST_NOT_REFERENCES: usize = transmute_ref!(0usize);
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/never-type-fallback.html>
    = help: specify the types explicitly
 note: in edition 2024, the requirement `!: IntoBytes` will fail
   --> tests/ui-nightly/transmute-ref-src-dst-not-references.rs:17:39
@@ -105,8 +105,8 @@ warning: never type fallback affects this call to an `unsafe` function
 17 | const SRC_DST_NOT_REFERENCES: usize = transmute_ref!(0usize);
    |                                       ^^^^^^^^^^^^^^^^^^^^^^
    |
-   = warning: this will change its meaning in a future release!
-   = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
+   = warning: this changes meaning in Rust 2024 and in a future release in all editions!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/never-type-fallback.html>
    = help: specify the type explicitly
    = note: `#[warn(never_type_fallback_flowing_into_unsafe)]` on by default
    = note: this warning originates in the macro `$crate::assert_size_eq` which comes from the expansion of the macro `transmute_ref` (in Nightly builds, run with -Z macro-backtrace for more info)
@@ -117,7 +117,7 @@ warning: never type fallback affects this call to an `unsafe` function
 17 | const SRC_DST_NOT_REFERENCES: usize = transmute_ref!(0usize);
    |                                       ^^^^^^^^^^^^^^^^^^^^^^
    |
-   = warning: this will change its meaning in a future release!
-   = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
+   = warning: this changes meaning in Rust 2024 and in a future release in all editions!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/never-type-fallback.html>
    = help: specify the type explicitly
    = note: this warning originates in the macro `transmute_ref` (in Nightly builds, run with -Z macro-backtrace for more info)
diff --git a/tests/ui-nightly/transmute-ref-src-dst-unsized.stderr b/tests/ui-nightly/transmute-ref-src-dst-unsized.stderr
@@ -145,7 +145,7 @@ error[E0277]: the size for values of type `[u8]` cannot be known at compilation
    |
    = help: the trait `Sized` is not implemented for `[u8]`
 note: required by an implicit `Sized` bound in `std::intrinsics::transmute`
-  --> $RUST/core/src/intrinsics.rs
+  --> $RUST/core/src/intrinsics/mod.rs
    |
    | pub const unsafe fn transmute<Src, Dst>(_src: Src) -> Dst {
    |                                    ^^^ required by the implicit `Sized` requirement on this type parameter in `transmute`

diff --git a/tests/ui-nightly/transmute-ref-src-not-a-reference.stderr b/tests/ui-nightly/transmute-ref-src-not-a-reference.stderr
@@ -20,8 +20,8 @@ warning: this function depends on never type fallback being `()`
 17 | const SRC_NOT_A_REFERENCE: &u8 = transmute_ref!(0usize);
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/never-type-fallback.html>
    = help: specify the types explicitly
 note: in edition 2024, the requirement `!: IntoBytes` will fail
   --> tests/ui-nightly/transmute-ref-src-not-a-reference.rs:17:34
@@ -42,8 +42,8 @@ warning: never type fallback affects this call to an `unsafe` function
 17 | const SRC_NOT_A_REFERENCE: &u8 = transmute_ref!(0usize);
    |                                  ^^^^^^^^^^^^^^^^^^^^^^
    |
-   = warning: this will change its meaning in a future release!
-   = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
+   = warning: this changes meaning in Rust 2024 and in a future release in all editions!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/never-type-fallback.html>
    = help: specify the type explicitly
    = note: `#[warn(never_type_fallback_flowing_into_unsafe)]` on by default
    = note: this warning originates in the macro `$crate::assert_size_eq` which comes from the expansion of the macro `transmute_ref` (in Nightly builds, run with -Z macro-backtrace for more info)
@@ -54,7 +54,7 @@ warning: never type fallback affects this call to an `unsafe` function
 17 | const SRC_NOT_A_REFERENCE: &u8 = transmute_ref!(0usize);
    |                                  ^^^^^^^^^^^^^^^^^^^^^^
    |
-   = warning: this will change its meaning in a future release!
-   = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
+   = warning: this changes meaning in Rust 2024 and in a future release in all editions!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/never-type-fallback.html>
    = help: specify the type explicitly
    = note: this warning originates in the macro `transmute_ref` (in Nightly builds, run with -Z macro-backtrace for more info)
diff --git a/zerocopy-derive/tests/ui-nightly/mid_compile_pass.stderr b/zerocopy-derive/tests/ui-nightly/mid_compile_pass.stderr
@@ -13,7 +13,7 @@ note: required for `KL13<T>` to implement `KnownLayout`
 55 | #[derive(KnownLayout)]
    |          ^^^^^^^^^^^ unsatisfied trait bound introduced in this `derive` macro
    = note: this error originates in the derive macro `KnownLayout` (in Nightly builds, run with -Z macro-backtrace for more info)
-help: consider restricting type parameter `T`
+help: consider restricting type parameter `T` with trait `KnownLayout`
    |
 59 | fn test_kl13<T: zerocopy::KnownLayout>(t: T) -> impl KnownLayout {
    |               +++++++++++++++++++++++
@@ -102,7 +102,7 @@ note: required by a bound in `assert_kl`
 23 | fn assert_kl<T: ?Sized + KnownLayout>(_: &T) {}
    |                          ^^^^^^^^^^^ required by this bound in `assert_kl`
    = note: this error originates in the derive macro `KnownLayout` (in Nightly builds, run with -Z macro-backtrace for more info)
-help: consider further restricting this bound
+help: consider further restricting type parameter `T` with trait `KnownLayout`
    |
 49 | fn test_kl12<T: ?Sized + zerocopy::KnownLayout>(kl: &KL12<T>) {
    |                        +++++++++++++++++++++++
diff --git a/zerocopy-derive/tests/ui-nightly/union.stderr b/zerocopy-derive/tests/ui-nightly/union.stderr
@@ -62,6 +62,20 @@ error: must have #[repr(C)], #[repr(transparent)], or #[repr(packed)] attribute
     |
     = note: this error originates in the derive macro `Unaligned` (in Nightly builds, run with -Z macro-backtrace for more info)
 
+warning: unexpected `cfg` condition name: `zerocopy_derive_union_into_bytes`
+  --> tests/ui-nightly/union.rs:39:10
+   |
+39 | #[derive(IntoBytes)]
+   |          ^^^^^^^^^
+   |
+   = help: expected names are: `clippy`, `debug_assertions`, `doc`, `docsrs`, `doctest`, `feature`, `fmt_debug`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `rustfmt`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `ub_checks`, `unix`, and `windows`
+   = note: using a cfg inside a derive macro will use the cfgs from the destination crate and not the ones from the defining crate
+   = help: try referring to `IntoBytes` crate for guidance on how handle this unexpected cfg
+   = help: the derive macro `IntoBytes` may come from an old version of the `zerocopy_derive` crate, try updating your dependency with `cargo update -p zerocopy_derive`
+   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
+   = note: `#[warn(unexpected_cfgs)]` on by default
+   = note: this warning originates in the derive macro `IntoBytes` (in Nightly builds, run with -Z macro-backtrace for more info)
+
 error[E0277]: the trait bound `UnsafeCell<()>: zerocopy::Immutable` is not satisfied
   --> tests/ui-nightly/union.rs:24:10
    |