tests/ui/must-use.stderr


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error: unused return value of `Interface::f` that must be used
  --> tests/ui/must-use.rs:18:5
   |
18 |     Thing.f();
   |     ^^^^^^^^^^
   |
note: the lint level is defined here
  --> tests/ui/must-use.rs:1:9
   |
1  | #![deny(unused_must_use)]
   |         ^^^^^^^^^^^^^^^