error: it is more concise to loop over references to containers instead of using explicit iteration methods
       --> tests/../src/lexical/math.rs:339:19
        |
    339 |         for xi in x.iter_mut() {
        |                   ^^^^^^^^^^^^ help: to write this more concisely, try: `&mut *x`
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_iter_loop
        = note: `-D clippy::explicit-iter-loop` implied by `-D clippy::pedantic`

    error: it is more concise to loop over references to containers instead of using explicit iteration methods
       --> tests/../src/lexical/math.rs:485:19
        |
    485 |         for xi in x.iter_mut() {
        |                   ^^^^^^^^^^^^ help: to write this more concisely, try: `&mut *x`
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_iter_loop