error: unnecessary map of the identity function --> $DIR/map_identity.rs:7:47 | LL | let _: Vec<_> = x.iter().map(not_identity).map(|x| return x).collect(); | ^^^^^^^^^^^^^^^^^^ help: remove the call to `map` | = note: `-D clippy::map-identity` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::map_identity)]` error: unnecessary map of the identity function --> $DIR/map_identity.rs:8:57 | LL | let _: Vec<_> = x.iter().map(std::convert::identity).map(|y| y).collect(); | ^^^^^^^^^^^ help: remove the call to `map` error: unnecessary map of the identity function --> $DIR/map_identity.rs:8:29 | LL | let _: Vec<_> = x.iter().map(std::convert::identity).map(|y| y).collect(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the call to `map` error: unnecessary map of the identity function --> $DIR/map_identity.rs:9:32 | LL | let _: Option = Some(3).map(|x| x); | ^^^^^^^^^^^ help: remove the call to `map` error: unnecessary map of the identity function --> $DIR/map_identity.rs:10:36 | LL | let _: Result = Ok(-3).map(|x| { | ____________________________________^ LL | | return x; LL | | }); | |______^ help: remove the call to `map` error: unnecessary map of the identity function --> $DIR/map_identity.rs:20:36 | LL | let _: Result = Ok(1).map_err(|a| a); | ^^^^^^^^^^^^^^^ help: remove the call to `map_err` error: unnecessary map of the identity function --> $DIR/map_identity.rs:30:22 | LL | let _ = x.clone().map(|(x, y)| (x, y)); | ^^^^^^^^^^^^^^^^^^^^^ help: remove the call to `map` error: unnecessary map of the identity function --> $DIR/map_identity.rs:31:22 | LL | let _ = x.clone().map(|(x, y)| { | ______________________^ LL | | return (x, y); LL | | }); | |______^ help: remove the call to `map` error: unnecessary map of the identity function --> $DIR/map_identity.rs:34:22 | LL | let _ = x.clone().map(|(x, y)| return (x, y)); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the call to `map` error: unnecessary map of the identity function --> $DIR/map_identity.rs:37:22 | LL | let _ = y.clone().map(|(x, y, (z, (w,)))| (x, y, (z, (w,)))); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the call to `map` error: unnecessary map of the identity function --> $DIR/map_identity.rs:66:30 | LL | let _ = x.iter().copied().map(|(x, y)| (x, y)); | ^^^^^^^^^^^^^^^^^^^^^ help: remove the call to `map` error: aborting due to 11 previous errors