error: unused `Result` in tuple element 0 that must be used --> $DIR/must_use-tuple.rs:8:6 | LL | (Ok::<(), ()>(()),); | ^^^^^^^^^^^^^^^^ | note: the lint level is defined here --> $DIR/must_use-tuple.rs:1:9 | LL | #![deny(unused_must_use)] | ^^^^^^^^^^^^^^^ = note: this `Result` may be an `Err` variant, which should be handled error: unused `Result` in tuple element 0 that must be used --> $DIR/must_use-tuple.rs:10:6 | LL | (Ok::<(), ()>(()), 0, Ok::<(), ()>(()), 5); | ^^^^^^^^^^^^^^^^ | = note: this `Result` may be an `Err` variant, which should be handled error: unused `Result` in tuple element 2 that must be used --> $DIR/must_use-tuple.rs:10:27 | LL | (Ok::<(), ()>(()), 0, Ok::<(), ()>(()), 5); | ^^^^^^^^^^^^^^^^ | = note: this `Result` may be an `Err` variant, which should be handled error: unused `Result` in tuple element 0 that must be used --> $DIR/must_use-tuple.rs:14:5 | LL | foo(); | ^^^^^ | = note: this `Result` may be an `Err` variant, which should be handled error: unused `Result` in tuple element 0 that must be used --> $DIR/must_use-tuple.rs:16:7 | LL | ((Err::<(), ()>(()), ()), ()); | ^^^^^^^^^^^^^^^^^ | = note: this `Result` may be an `Err` variant, which should be handled error: aborting due to 5 previous errors