error[E0308]: mismatched types
  --> $DIR/byte-string-mutability-mismatch.rs:10:9
   |
LL |     match &mut val {
   |           -------- this expression has type `&mut [u8; 2]`
LL |         b"a\n" => {},
   |         ^^^^^^ types differ in mutability
   |
   = note: expected mutable reference `&mut _`
                      found reference `&'static _`

error[E0308]: mismatched types
  --> $DIR/byte-string-mutability-mismatch.rs:16:10
   |
LL |     match &mut val[..] {
   |           ------------ this expression has type `&mut [u8]`
LL |          b"a\n" => {},
   |          ^^^^^^ types differ in mutability
   |
   = note: expected mutable reference `&mut _`
                      found reference `&'static _`

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0308`.