src/test/ui/traits/bound/assoc-fn-bound-root-obligation.stderr

   1 error[E0277]: expected a `FnMut<(char,)>` closure, found `u8`
   2   --> $DIR/assoc-fn-bound-root-obligation.rs:2:7
   3    |
   4 LL |     s.strip_suffix(b'\n').unwrap_or(s)
   5    |       ^^^^^^^^^^^^ expected an `FnMut<(char,)>` closure, found `u8`
   6    |
   7    = help: the trait `FnMut<(char,)>` is not implemented for `u8`
   8    = help: the following other types implement trait `Pattern<'a>`:
   9              &'b String
  10              &'b [char; N]
  11              &'b [char]
  12              &'b str
  13              &'c &'b str
  14              [char; N]
  15              char
  16    = note: required for `u8` to implement `Pattern<'_>`
  17
  18 error: aborting due to previous error
  19
  20 For more information about this error, try `rustc --explain E0277`.