tests/ui/diagnostic_namespace/on_unimplemented/ignore_unsupported_options_and_continue_to_use_fallback.stderr

warning: malformed `on_unimplemented` attribute
  --> $DIR/ignore_unsupported_options_and_continue_to_use_fallback.rs:4:5
   |
LL |     if(Self = "()"),
   |     ^^^^^^^^^^^^^^^ invalid option found here
   |
   = help: only `message`, `note` and `label` are allowed as options
   = note: `#[warn(unknown_or_malformed_diagnostic_attributes)]` on by default

warning: malformed `on_unimplemented` attribute
  --> $DIR/ignore_unsupported_options_and_continue_to_use_fallback.rs:4:5
   |
LL |     if(Self = "()"),
   |     ^^^^^^^^^^^^^^^ invalid option found here
   |
   = help: only `message`, `note` and `label` are allowed as options
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`

error[E0277]: custom message
  --> $DIR/ignore_unsupported_options_and_continue_to_use_fallback.rs:18:15
   |
LL |     takes_foo(());
   |     --------- ^^ fallback label
   |     |
   |     required by a bound introduced by this call
   |
   = help: the trait `Foo` is not implemented for `()`
   = note: custom note
   = note: fallback note
help: this trait has no implementations, consider adding one
  --> $DIR/ignore_unsupported_options_and_continue_to_use_fallback.rs:13:1
   |
LL | trait Foo {}
   | ^^^^^^^^^
note: required by a bound in `takes_foo`
  --> $DIR/ignore_unsupported_options_and_continue_to_use_fallback.rs:15:22
   |
LL | fn takes_foo(_: impl Foo) {}
   |                      ^^^ required by this bound in `takes_foo`

error: aborting due to previous error; 2 warnings emitted

For more information about this error, try `rustc --explain E0277`.