1error[E0512]: cannot transmute between types of different sizes, or dependently-sized types 2 --> tests/ui-msrv/transmute-mut-alignment-increase.rs:20:39 3 | 420 | const INCREASE_ALIGNMENT: &mut AU16 = transmute_mut!(&mut [0u8; 2]); 5 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 6 | 7 = note: source type: `AlignOf<[u8; 2]>` (8 bits) 8 = note: target type: `MaxAlignsOf<[u8; 2], AU16>` (16 bits) 9 = note: this error originates in the macro `$crate::assert_align_gt_eq` (in Nightly builds, run with -Z macro-backtrace for more info) 10 11error[E0658]: mutable references are not allowed in constants 12 --> tests/ui-msrv/transmute-mut-alignment-increase.rs:20:54 13 | 1420 | const INCREASE_ALIGNMENT: &mut AU16 = transmute_mut!(&mut [0u8; 2]); 15 | ^^^^^^^^^^^^^ 16 | 17 = note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information 18 19error[E0015]: calls in constants are limited to constant functions, tuple structs and tuple variants 20 --> tests/ui-msrv/transmute-mut-alignment-increase.rs:20:39 21 | 2220 | const INCREASE_ALIGNMENT: &mut AU16 = transmute_mut!(&mut [0u8; 2]); 23 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 24 | 25 = note: this error originates in the macro `transmute_mut` (in Nightly builds, run with -Z macro-backtrace for more info) 26 27error[E0716]: temporary value dropped while borrowed 28 --> tests/ui-msrv/transmute-mut-alignment-increase.rs:20:59 29 | 3020 | const INCREASE_ALIGNMENT: &mut AU16 = transmute_mut!(&mut [0u8; 2]); 31 | --------------------^^^^^^^^- 32 | | | 33 | | creates a temporary which is freed while still in use 34 | temporary value is freed at the end of this statement 35 | using this value as a constant requires that borrow lasts for `'static` 36