Auto merge of #57138 - matthiaskrgr:clippy, r=oli-obk

submodules: update clippy from fc24fce7 to 721f688e

Fixes clippy toolstate.

Changes:
````
rustup https://github.com/rust-lang/rust/pull/57069
Rustfmt.
fix breakage from rust-lang/rust#57088
fix a couple of ftrivial typos (NFC).
update CARGO_CLIPPY_HELP string to suggest tool lints.
rustc_tools_util: add readme
rustc_tool_utils: expand Cargo.toml with a few keywords in preparation for crates.io release
Fix macro detection in `empty_loop`.
Changed `macro_backtrace()` to `in_macro()`.
Fix lint detection on macro expansion.
````

r? @oli-obk
This commit is contained in:
bors 2018-12-28 22:41:04 +00:00
commit d9e3edb74b

@ -1 +1 @@
Subproject commit fc24fce73f878e641094b1802df1e748c5fe233a
Subproject commit f7bdf500d93895b6c02f8ae6a73002207f85e523