error: empty line after doc comment
  --> tracing-subscriber/benches/reload.rs:16:1
   |
16 | / /// reloadable collectors.
17 | |
   | |_
18 |   fn mk_builder() -> CollectorBuilder<DefaultFields, Format<Full>, EnvFilter, fn() -> NoWriter> {
   |   --------------------------------------------------------------------------------------------- the comment documents this function
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#empty_line_after_doc_comments
   = note: `-D clippy::empty-line-after-doc-comments` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::empty_line_after_doc_comments)]`
   = help: if the empty line is unintentional remove it