src/test/ui/recursion/recursive-types-are-not-uninhabited.stderr

   1 error[E0005]: refutable pattern in local binding: `Err(_)` not covered
   2   --> $DIR/recursive-types-are-not-uninhabited.rs:6:9
   3    |
   4 LL |     let Ok(x) = res;
   5    |         ^^^^^ pattern `Err(_)` not covered
   6    |
   7   ::: $SRC_DIR/core/src/result.rs:LL:COL
   8    |
   9 LL |     Err(#[stable(feature = "rust1", since = "1.0.0")] E),
  10    |     --- not covered
  11    |
  12    = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
  13    = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
  14    = note: the matched value is of type `Result<u32, &R>`
  15 help: you might want to use `if let` to ignore the variant that isn't matched
  16    |
  17 LL |     if let Ok(x) = res { /* */ }
  18    |
  19
  20 error: aborting due to previous error
  21
  22 For more information about this error, try `rustc --explain E0005`.