error: redundant closure
   --> src/harness/report.rs:424:31
    |
424 |         input.parse().map_err(|e| D::Error::custom(e))
    |                               ^^^^^^^^^^^^^^^^^^^^^^^ help: replace the closure with the function itself: `D::Error::custom`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
    = note: `-D clippy::redundant-closure` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::redundant_closure)]`