1error[E0593]: closure is expected to take a single 2-tuple as argument, but it takes 2 distinct arguments 2 --> $DIR/closure-arg-count-expected-type-issue-47244.rs:16:23 3 | 4LL | let _n = m.iter().map(|_, b| { 5 | ^^^ ------ takes 2 distinct arguments 6 | | 7 | expected closure that takes a single 2-tuple as argument 8 | 9help: change the closure to accept a tuple instead of individual arguments 10 | 11LL | let _n = m.iter().map(|(_, b)| { 12 | ~~~~~~~~ 13 14error: aborting due to previous error 15 16For more information about this error, try `rustc --explain E0593`. 17