unable to build on `nightly-2019-08-02`

[miller-time]

unstabilizing #[bench] (rust-lang/rust#62507) has broken the route-recognizer crate's ability to build on nightly:

$ cargo +nigtly build
...
error[E0658]: use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable

#[bench]
  ^^^^^
 help: add `#![feature(test)]` to the crate attributes to enable

I have a PR open... http-rs/route-recognizer#25

To clarify:

• nightly-2019-07-31 - ✔️
  (nightly-2019-07-31-x86_64-unknown-linux-gnu installed - rustc 1.38.0-nightly (dddb7fca0 2019-07-30))
• nightly-2019-08-01 - ✔️
  (nightly-2019-08-01-x86_64-unknown-linux-gnu installed - rustc 1.38.0-nightly (8a58268b5 2019-07-31))
• nightly-2019-08-02 - ❌
  (nightly-2019-08-02-x86_64-unknown-linux-gnu installed - rustc 1.38.0-nightly (435236b88 2019-08-01))

[miller-time]

• nightly-2019-08-03 - ❌
  (nightly-2019-08-03-x86_64-unknown-linux-gnu installed - rustc 1.38.0-nightly (b0e40bfba 2019-08-02))
• nightly-2019-08-04 - ❌
  (nightly-2019-08-04-x86_64-unknown-linux-gnu installed - rustc 1.38.0-nightly (6e0d27d93 2019-08-03))

[miller-time]

• nightly-2019-08-05 - ❌
  (nightly-2019-08-05-x86_64-unknown-linux-gnu installed - rustc 1.38.0-nightly (d3f8a0b5d 2019-08-04))
• nightly-2019-08-06 - ❌
  (nightly-2019-08-06-x86_64-unknown-linux-gnu installed - rustc 1.38.0-nightly (c4715198b 2019-08-05))