submodules: update clippy from a8eeb7cd to 577ee796

[matthiaskrgr]

Changes:

Rustup to https://github.com/rust-lang/rust/pull/61026
rustup https://github.com/rust-lang/rust/pull/60803/
Rustup to https://github.com/rust-lang/rust/pull/59545
Rustup to https://github.com/rust-lang/rust/pull/60965
clippy: bump rustc_tools util version to 0.2 rustc_tools_util: fix typo in docs (readme)
rustc_tool_utils: bump version to 0.2.0
update if_chain to 1.0.0
tests: update needless_bool test stderr
cargo fmt
Rustup to https://github.com/rust-lang/rust/pull/60740
Lifetimes UI test cleanup

r? @oli-obk

[rust-highfive]

⚠️ Warning ⚠️

• These commits modify submodules.

[oli-obk]

@bors r+ p=1

[bors]

📌 Commit eb98952 has been approved by oli-obk

[bors]

⌛ Testing commit eb98952 with merge af22dd652db4993e97b7a63248a4ffd22987c0fb...

[bors]

💔 Test failed - checks-travis

[rust-highfive]

The job x86_64-gnu-tools of your PR failed on Travis (raw log). Through arcane magic we have determined that the following fragments from the build log may contain information about the problem.

Click to expand the log.

[01:36:44] Verifying status of rustfmt...
[01:36:44] Verifying status of clippy-driver...
[01:36:44] This PR updated 'src/tools/clippy', verifying if status is 'test-pass'...
[01:36:44] 
[01:36:44] ⚠️ We detected that this PR updated 'clippy-driver', but its tests failed.
[01:36:44] 
[01:36:44] If you do intend to update 'clippy-driver', please check the error messages above and
[01:36:44] commit another update.
[01:36:44] 
[01:36:44] If you do NOT intend to update 'clippy-driver', please ensure you did not accidentally
[01:36:44] change the submodule at 'src/tools/clippy'. You may ask your reviewer for the
[01:36:44] proper steps.
The command "stamp sh -x -c "$RUN_SCRIPT"" exited with 3.
travis_time:start:20fc563c
$ date && (curl -fs --head https://google.com | grep ^Date: | sed 's/Date: //g' || true)
Sat May 25 22:41:11 UTC 2019
---
travis_time:end:01c017ea:start=1558824073262463895,finish=1558824073274550191,duration=12086296
travis_fold:end:after_failure.3
travis_fold:start:after_failure.4
travis_time:start:0136ee52
$ ln -s . checkout && for CORE in obj/cores/core.*; do EXE=$(echo $CORE | sed 's|obj/cores/core\.[0-9]*\.!checkout!\(.*\)|\1|;y|!|/|'); if [ -f "$EXE" ]; then printf travis_fold":start:crashlog\n\033[31;1m%s\033[0m\n" "$CORE"; gdb --batch -q -c "$CORE" "$EXE" -iex 'set auto-load off' -iex 'dir src/' -iex 'set sysroot .' -ex bt -ex q; echo travis_fold":"end:crashlog; fi; done || true
travis_fold:end:after_failure.4
travis_fold:start:after_failure.5
travis_time:start:05d7f880
travis_time:start:05d7f880
$ cat ./obj/build/x86_64-unknown-linux-gnu/native/asan/build/lib/asan/clang_rt.asan-dynamic-i386.vers || true
cat: ./obj/build/x86_64-unknown-linux-gnu/native/asan/build/lib/asan/clang_rt.asan-dynamic-i386.vers: No such file or directory
travis_fold:end:after_failure.5
travis_fold:start:after_failure.6
travis_time:start:097df940
$ dmesg | grep -i kill

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[oli-obk]

I'll fix clippy and open a new update PR