src/test/ui/recursion/issue-83150.stderr

   1 warning: function cannot return without recursing
   2   --> $DIR/issue-83150.rs:11:1
   3    |
   4 LL | fn func<T: Iterator<Item = u8>>(iter: &mut T) {
   5    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
   6 LL |     func(&mut iter.map(|x| x + 1))
   7    |     ------------------------------ recursive call site
   8    |
   9    = help: a `loop` may express intention better if this is on purpose
  10    = note: `#[warn(unconditional_recursion)]` on by default
  11
  12 error[E0275]: overflow evaluating the requirement `Map<&mut Map<&mut Map<&mut Map<..., ...>, ...>, ...>, ...>: Iterator`
  13    |
  14    = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`issue_83150`)
  15    = note: required for `&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<..., ...>, ...>, ...>, ...>, ...>, ...>, ...>` to implement `Iterator`
  16    = note: the full type name has been written to '$TEST_BUILD_DIR/recursion/issue-83150/issue-83150.long-type-hash.txt'
  17
  18 error: aborting due to previous error; 1 warning emitted
  19
  20 For more information about this error, try `rustc --explain E0275`.