src/test/ui/issues/issue-15783.stderr

   1 error[E0308]: mismatched types
   2   --> $DIR/issue-15783.rs:8:19
   3    |
   4 LL |     let msg = foo(x);
   5    |                   ^ expected slice `[&str]`, found array `[&str; 1]`
   6    |
   7    = note: expected enum `std::option::Option<&[&str]>`
   8               found enum `std::option::Option<&[&str; 1]>`
   9
  10 error: aborting due to previous error
  11
  12 For more information about this error, try `rustc --explain E0308`.