error[E0277]: the size for values of type `[u8]` cannot be known at compilation time --> tests/ui-nightly/transmute-mut-src-unsized.rs:16:35 | 16 | const SRC_UNSIZED: &mut [u8; 1] = transmute_mut!(&mut [0u8][..]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | | | doesn't have a size known at compile-time | required by a bound introduced by this call | = help: the trait `Sized` is not implemented for `[u8]` note: required by a bound in `AssertSrcIsFromBytes` --> tests/ui-nightly/transmute-mut-src-unsized.rs:16:35 | 16 | const SRC_UNSIZED: &mut [u8; 1] = transmute_mut!(&mut [0u8][..]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `AssertSrcIsFromBytes` = note: this error originates in the macro `transmute_mut` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0277]: the size for values of type `[u8]` cannot be known at compilation time --> tests/ui-nightly/transmute-mut-src-unsized.rs:16:35 | 16 | const SRC_UNSIZED: &mut [u8; 1] = transmute_mut!(&mut [0u8][..]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time | = help: the trait `Sized` is not implemented for `[u8]` note: required by a bound in `AssertSrcIsFromBytes` --> tests/ui-nightly/transmute-mut-src-unsized.rs:16:35 | 16 | const SRC_UNSIZED: &mut [u8; 1] = transmute_mut!(&mut [0u8][..]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `AssertSrcIsFromBytes` = note: this error originates in the macro `transmute_mut` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0277]: the size for values of type `[u8]` cannot be known at compilation time --> tests/ui-nightly/transmute-mut-src-unsized.rs:16:35 | 16 | const SRC_UNSIZED: &mut [u8; 1] = transmute_mut!(&mut [0u8][..]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | | | doesn't have a size known at compile-time | required by a bound introduced by this call | = help: the trait `Sized` is not implemented for `[u8]` note: required by a bound in `AssertSrcIsAsBytes` --> tests/ui-nightly/transmute-mut-src-unsized.rs:16:35 | 16 | const SRC_UNSIZED: &mut [u8; 1] = transmute_mut!(&mut [0u8][..]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `AssertSrcIsAsBytes` = note: this error originates in the macro `transmute_mut` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0277]: the size for values of type `[u8]` cannot be known at compilation time --> tests/ui-nightly/transmute-mut-src-unsized.rs:16:35 | 16 | const SRC_UNSIZED: &mut [u8; 1] = transmute_mut!(&mut [0u8][..]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time | = help: the trait `Sized` is not implemented for `[u8]` note: required by a bound in `AssertSrcIsAsBytes` --> tests/ui-nightly/transmute-mut-src-unsized.rs:16:35 | 16 | const SRC_UNSIZED: &mut [u8; 1] = transmute_mut!(&mut [0u8][..]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `AssertSrcIsAsBytes` = note: this error originates in the macro `transmute_mut` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0277]: the size for values of type `[u8]` cannot be known at compilation time --> tests/ui-nightly/transmute-mut-src-unsized.rs:16:35 | 16 | const SRC_UNSIZED: &mut [u8; 1] = transmute_mut!(&mut [0u8][..]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time | = help: the trait `Sized` is not implemented for `[u8]` = note: all local variables must have a statically known size = help: unsized locals are gated as an unstable feature = note: this error originates in the macro `transmute_mut` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0277]: the size for values of type `[u8]` cannot be known at compilation time --> tests/ui-nightly/transmute-mut-src-unsized.rs:16:35 | 16 | const SRC_UNSIZED: &mut [u8; 1] = transmute_mut!(&mut [0u8][..]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time | = help: the trait `Sized` is not implemented for `[u8]` note: required by a bound in `AlignOf::::into_t` --> src/macro_util.rs | | impl AlignOf { | ^ required by this bound in `AlignOf::::into_t` | #[inline(never)] // Make `missing_inline_in_public_items` happy. | pub fn into_t(self) -> T { | ------ required by a bound in this associated function = note: this error originates in the macro `$crate::assert_align_gt_eq` which comes from the expansion of the macro `transmute_mut` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0277]: the size for values of type `[u8]` cannot be known at compilation time --> tests/ui-nightly/transmute-mut-src-unsized.rs:16:35 | 16 | const SRC_UNSIZED: &mut [u8; 1] = transmute_mut!(&mut [0u8][..]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time | = help: the trait `Sized` is not implemented for `[u8]` = note: the left-hand-side of an assignment must have a statically known size = note: this error originates in the macro `$crate::assert_align_gt_eq` which comes from the expansion of the macro `transmute_mut` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0277]: the size for values of type `[u8]` cannot be known at compilation time --> tests/ui-nightly/transmute-mut-src-unsized.rs:16:35 | 16 | const SRC_UNSIZED: &mut [u8; 1] = transmute_mut!(&mut [0u8][..]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time | = help: the trait `Sized` is not implemented for `[u8]` note: required by a bound in `AlignOf` --> src/macro_util.rs | | pub struct AlignOf { | ^ required by this bound in `AlignOf` = note: this error originates in the macro `$crate::assert_align_gt_eq` which comes from the expansion of the macro `transmute_mut` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0277]: the size for values of type `[u8]` cannot be known at compilation time --> tests/ui-nightly/transmute-mut-src-unsized.rs:16:35 | 16 | const SRC_UNSIZED: &mut [u8; 1] = transmute_mut!(&mut [0u8][..]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time | = help: the trait `Sized` is not implemented for `[u8]` note: required by a bound in `MaxAlignsOf` --> src/macro_util.rs | | pub union MaxAlignsOf { | ^ required by this bound in `MaxAlignsOf` = note: this error originates in the macro `$crate::assert_align_gt_eq` which comes from the expansion of the macro `transmute_mut` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0277]: the size for values of type `[u8]` cannot be known at compilation time --> tests/ui-nightly/transmute-mut-src-unsized.rs:16:35 | 16 | const SRC_UNSIZED: &mut [u8; 1] = transmute_mut!(&mut [0u8][..]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time | = help: the trait `Sized` is not implemented for `[u8]` note: required by a bound in `AlignOf` --> src/macro_util.rs | | pub struct AlignOf { | ^ required by this bound in `AlignOf` = note: this error originates in the macro `$crate::assert_align_gt_eq` which comes from the expansion of the macro `transmute_mut` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0277]: the size for values of type `[u8]` cannot be known at compilation time --> tests/ui-nightly/transmute-mut-src-unsized.rs:16:35 | 16 | const SRC_UNSIZED: &mut [u8; 1] = transmute_mut!(&mut [0u8][..]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | | | doesn't have a size known at compile-time | required by a bound introduced by this call | = help: the trait `Sized` is not implemented for `[u8]` note: required by a bound in `transmute_mut` --> src/macro_util.rs | | pub unsafe fn transmute_mut<'dst, 'src: 'dst, Src: 'src, Dst: 'dst>( | ^^^ required by this bound in `transmute_mut` = note: this error originates in the macro `transmute_mut` (in Nightly builds, run with -Z macro-backtrace for more info)