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|
warning: unused return value of `foo` that must be used
--> $DIR/must-use-block-expr.rs:13:9
|
LL | foo();
| ^^^^^
|
note: the lint level is defined here
--> $DIR/must-use-block-expr.rs:4:9
|
LL | #![warn(unused_must_use)]
| ^^^^^^^^^^^^^^^
help: use `let _ = ...` to ignore the resulting value
|
LL | let _ = foo();
| +++++++
warning: unused return value of `foo` that must be used
--> $DIR/must-use-block-expr.rs:20:9
|
LL | foo()
| ^^^^^
|
help: use `let _ = ...` to ignore the resulting value
|
LL | let _ = foo();
| +++++++ +
warning: unused arithmetic operation that must be used
--> $DIR/must-use-block-expr.rs:29:9
|
LL | 1 + 2;
| ^^^^^ the arithmetic operation produces a value
|
help: use `let _ = ...` to ignore the resulting value
|
LL | let _ = 1 + 2;
| +++++++
warning: unused arithmetic operation that must be used
--> $DIR/must-use-block-expr.rs:33:9
|
LL | 1 + 2
| ^^^^^ the arithmetic operation produces a value
|
help: use `let _ = ...` to ignore the resulting value
|
LL | let _ = 1 + 2;
| +++++++ +
warning: 4 warnings emitted
|
