error: the loop variable `i` is only used to index `vec`. --> $DIR/for_loop.rs:41:14 | LL | for i in 0..vec.len() { | ^^^^^^^^^^^^ | = note: `-D clippy::needless-range-loop` implied by `-D warnings` help: consider using an iterator | LL | for in &vec { | ^^^^^^ ^^^^ error: the loop variable `i` is only used to index `vec`. --> $DIR/for_loop.rs:50:14 | LL | for i in 0..vec.len() { | ^^^^^^^^^^^^ help: consider using an iterator | LL | for in &vec { | ^^^^^^ ^^^^ error: the loop variable `j` is only used to index `STATIC`. --> $DIR/for_loop.rs:55:14 | LL | for j in 0..4 { | ^^^^ help: consider using an iterator | LL | for in &STATIC { | ^^^^^^ ^^^^^^^ error: the loop variable `j` is only used to index `CONST`. --> $DIR/for_loop.rs:59:14 | LL | for j in 0..4 { | ^^^^ help: consider using an iterator | LL | for in &CONST { | ^^^^^^ ^^^^^^ error: the loop variable `i` is used to index `vec` --> $DIR/for_loop.rs:63:14 | LL | for i in 0..vec.len() { | ^^^^^^^^^^^^ help: consider using an iterator | LL | for (i, ) in vec.iter().enumerate() { | ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^ error: the loop variable `i` is only used to index `vec2`. --> $DIR/for_loop.rs:71:14 | LL | for i in 0..vec.len() { | ^^^^^^^^^^^^ help: consider using an iterator | LL | for in vec2.iter().take(vec.len()) { | ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: the loop variable `i` is only used to index `vec`. --> $DIR/for_loop.rs:75:14 | LL | for i in 5..vec.len() { | ^^^^^^^^^^^^ help: consider using an iterator | LL | for in vec.iter().skip(5) { | ^^^^^^ ^^^^^^^^^^^^^^^^^^ error: the loop variable `i` is only used to index `vec`. --> $DIR/for_loop.rs:79:14 | LL | for i in 0..MAX_LEN { | ^^^^^^^^^^ help: consider using an iterator | LL | for in vec.iter().take(MAX_LEN) { | ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ error: the loop variable `i` is only used to index `vec`. --> $DIR/for_loop.rs:83:14 | LL | for i in 0..=MAX_LEN { | ^^^^^^^^^^^ help: consider using an iterator | LL | for in vec.iter().take(MAX_LEN + 1) { | ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: the loop variable `i` is only used to index `vec`. --> $DIR/for_loop.rs:87:14 | LL | for i in 5..10 { | ^^^^^ help: consider using an iterator | LL | for in vec.iter().take(10).skip(5) { | ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: the loop variable `i` is only used to index `vec`. --> $DIR/for_loop.rs:91:14 | LL | for i in 5..=10 { | ^^^^^^ help: consider using an iterator | LL | for in vec.iter().take(10 + 1).skip(5) { | ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: the loop variable `i` is used to index `vec` --> $DIR/for_loop.rs:95:14 | LL | for i in 5..vec.len() { | ^^^^^^^^^^^^ help: consider using an iterator | LL | for (i, ) in vec.iter().enumerate().skip(5) { | ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: the loop variable `i` is used to index `vec` --> $DIR/for_loop.rs:99:14 | LL | for i in 5..10 { | ^^^^^ help: consider using an iterator | LL | for (i, ) in vec.iter().enumerate().take(10).skip(5) { | ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: this range is empty so this for loop will never run --> $DIR/for_loop.rs:103:14 | LL | for i in 10..0 { | ^^^^^ | = note: `-D clippy::reverse-range-loop` implied by `-D warnings` help: consider using the following if you are attempting to iterate over this range in reverse | LL | for i in (0..10).rev() { | ^^^^^^^^^^^^^ error: this range is empty so this for loop will never run --> $DIR/for_loop.rs:107:14 | LL | for i in 10..=0 { | ^^^^^^ help: consider using the following if you are attempting to iterate over this range in reverse | LL | for i in (0...10).rev() { | ^^^^^^^^^^^^^^ error: this range is empty so this for loop will never run --> $DIR/for_loop.rs:111:14 | LL | for i in MAX_LEN..0 { | ^^^^^^^^^^ help: consider using the following if you are attempting to iterate over this range in reverse | LL | for i in (0..MAX_LEN).rev() { | ^^^^^^^^^^^^^^^^^^ error: this range is empty so this for loop will never run --> $DIR/for_loop.rs:115:14 | LL | for i in 5..5 { | ^^^^ error: this range is empty so this for loop will never run --> $DIR/for_loop.rs:140:14 | LL | for i in 10..5 + 4 { | ^^^^^^^^^ help: consider using the following if you are attempting to iterate over this range in reverse | LL | for i in (5 + 4..10).rev() { | ^^^^^^^^^^^^^^^^^ error: this range is empty so this for loop will never run --> $DIR/for_loop.rs:144:14 | LL | for i in (5 + 2)..(3 - 1) { | ^^^^^^^^^^^^^^^^ help: consider using the following if you are attempting to iterate over this range in reverse | LL | for i in ((3 - 1)..(5 + 2)).rev() { | ^^^^^^^^^^^^^^^^^^^^^^^^ error: this range is empty so this for loop will never run --> $DIR/for_loop.rs:148:14 | LL | for i in (5 + 2)..(8 - 1) { | ^^^^^^^^^^^^^^^^ error: it is more concise to loop over references to containers instead of using explicit iteration methods --> $DIR/for_loop.rs:170:15 | LL | for _v in vec.iter() {} | ^^^^^^^^^^ | = note: `-D clippy::explicit-iter-loop` implied by `-D warnings` error: it is more concise to loop over references to containers instead of using explicit iteration methods --> $DIR/for_loop.rs:172:15 | LL | for _v in vec.iter_mut() {} | ^^^^^^^^^^^^^^ error: it is more concise to loop over containers instead of using explicit iteration methods` --> $DIR/for_loop.rs:175:15 | LL | for _v in out_vec.into_iter() {} | ^^^^^^^^^^^^^^^^^^^ | = note: `-D clippy::explicit-into-iter-loop` implied by `-D warnings` error: it is more concise to loop over references to containers instead of using explicit iteration methods --> $DIR/for_loop.rs:178:15 | LL | for _v in array.into_iter() {} | ^^^^^^^^^^^^^^^^^ error: it is more concise to loop over references to containers instead of using explicit iteration methods --> $DIR/for_loop.rs:183:15 | LL | for _v in [1, 2, 3].iter() {} | ^^^^^^^^^^^^^^^^ error: it is more concise to loop over references to containers instead of using explicit iteration methods --> $DIR/for_loop.rs:187:15 | LL | for _v in [0; 32].iter() {} | ^^^^^^^^^^^^^^ error: it is more concise to loop over references to containers instead of using explicit iteration methods --> $DIR/for_loop.rs:192:15 | LL | for _v in ll.iter() {} | ^^^^^^^^^ error: it is more concise to loop over references to containers instead of using explicit iteration methods --> $DIR/for_loop.rs:195:15 | LL | for _v in vd.iter() {} | ^^^^^^^^^ error: it is more concise to loop over references to containers instead of using explicit iteration methods --> $DIR/for_loop.rs:198:15 | LL | for _v in bh.iter() {} | ^^^^^^^^^ error: it is more concise to loop over references to containers instead of using explicit iteration methods --> $DIR/for_loop.rs:201:15 | LL | for _v in hm.iter() {} | ^^^^^^^^^ error: it is more concise to loop over references to containers instead of using explicit iteration methods --> $DIR/for_loop.rs:204:15 | LL | for _v in bt.iter() {} | ^^^^^^^^^ error: it is more concise to loop over references to containers instead of using explicit iteration methods --> $DIR/for_loop.rs:207:15 | LL | for _v in hs.iter() {} | ^^^^^^^^^ error: it is more concise to loop over references to containers instead of using explicit iteration methods --> $DIR/for_loop.rs:210:15 | LL | for _v in bs.iter() {} | ^^^^^^^^^ error: you are iterating over `Iterator::next()` which is an Option; this will compile but is probably not what you want --> $DIR/for_loop.rs:212:15 | LL | for _v in vec.iter().next() {} | ^^^^^^^^^^^^^^^^^ | = note: `-D clippy::iter-next-loop` implied by `-D warnings` error: you are collect()ing an iterator and throwing away the result. Consider using an explicit for loop to exhaust the iterator --> $DIR/for_loop.rs:219:5 | LL | vec.iter().cloned().map(|x| out.push(x)).collect::>(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: `-D clippy::unused-collect` implied by `-D warnings` error: aborting due to 35 previous errors