src/test/ui/inference/cannot-infer-closure.stderr

   1 error[E0282]: type annotations needed
   2   --> $DIR/cannot-infer-closure.rs:4:9
   3    |
   4 LL |         Ok(b)
   5    |         ^^ cannot infer type of the type parameter `E` declared on the enum `Result`
   6    |
   7 help: consider specifying the generic arguments
   8    |
   9 LL |         Ok::<(), E>(b)
  10    |           +++++++++
  11
  12 error: aborting due to previous error
  13
  14 For more information about this error, try `rustc --explain E0282`.