1 error: mutating transmuted &mut T from &T may cause undefined behavior, consider instead using an UnsafeCell
2 --> $DIR/transmute-imut-to-mut.rs:6:32
4 LL | let _a: &mut u8 = unsafe { transmute(&1u8) };
7 = note: `#[deny(mutable_transmutes)]` on by default
9 error: aborting due to previous error