1error[E0308]: mismatched types
2  --> tests/ui-msrv/transmute-mut-src-not-a-reference.rs:17:53
3   |
417 | const SRC_NOT_A_REFERENCE: &mut u8 = transmute_mut!(0usize);
5   |                                      ---------------^^^^^^-
6   |                                      |              |
7   |                                      |              expected `&mut _`, found `usize`
8   |                                      |              help: consider mutably borrowing here: `&mut 0usize`
9   |                                      expected due to this
10   |
11   = note: expected mutable reference `&mut _`
12                           found type `usize`
13