Auto merge of #55681 - matthiaskrgr:clippy, r=oli-obk

submodules: update clippy from 71ec4ff6 to d8b42690

Fixes clippy toolstate.

Changes:

````
rustup https://github.com/rust-lang/rust/pull/55665 (pass contexts by reference)
Fix typo
Improve clippy_dev help text
RIIR update lints: Generate lint group registrations
Test clippy_dev on CI and fix test
RIIR update lints: Generate modules section
````
This commit is contained in:
bors
2018-11-05 06:58:10 +00:00