Update rustfmt and RLS

[nrc]

r? @kennytm

[rust-highfive]

⚠️ Warning ⚠️

• These commits modify submodules.

[rust-highfive]

The job x86_64-gnu-llvm-5.0 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.

tidy check
[00:04:50] * 559 error codes
[00:04:50] * highest error code: E0715
[00:04:50] * 232 features
[00:04:51] crate `rustc-ap-syntax` is duplicated in `Cargo.lock`
[00:04:51]   * rustc-ap-syntax 253.0.0 (registry+https://github.com/rust-lang/crates.io-index)
[00:04:51]   * rustc-ap-syntax 237.0.0 (registry+https://github.com/rust-lang/crates.io-index)
[00:04:51] some tidy checks failed
[00:04:51] 
[00:04:51] 
[00:04:51] command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0-tools-bin/tidy" "/checkout/src" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "--no-vendor" "--quiet"
[00:04:51] 
[00:04:51] 
[00:04:51] failed to run: /checkout/obj/build/bootstrap/debug/bootstrap test src/tools/tidy
[00:04:51] Build completed unsuccessfully in 0:00:55
[00:04:51] Build completed unsuccessfully in 0:00:55
[00:04:51] Makefile:79: recipe for target 'tidy' failed
[00:04:51] make: *** [tidy] Error 1

The command "stamp sh -x -c "$RUN_SCRIPT"" exited with 2.
travis_time:start:08a77445
$ date && (curl -fs --head https://google.com | grep ^Date: | sed 's/Date: //g' || true)
---
travis_time:end:049d7d66:start=1537858073990873645,finish=1537858073995879050,duration=5005405
travis_fold:end:after_failure.3
travis_fold:start:after_failure.4
travis_time:start:02693dcf
$ 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:141124c8
travis_time:start:141124c8
$ 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:1d49628e
$ dmesg | grep -i kill
$ dmesg | grep -i kill
[   10.102613] init: failsafe main process (1095) killed by TERM signal
[   41.528830] init: plymouth-upstart-bridge main process (509) killed by TERM signal
travis_fold:end:after_failure.6

Done. Your build exited with 1.

I'm a bot! I can only do what humans tell me to, so if this was not helpful or you have suggestions for improvements, please ping or otherwise contact @TimNN. (Feature Requests)

[kennytm]

[00:04:51] crate `rustc-ap-syntax` is duplicated in `Cargo.lock`
[00:04:51]   * rustc-ap-syntax 253.0.0 (registry+https://github.com/rust-lang/crates.io-index)
[00:04:51]   * rustc-ap-syntax 237.0.0 (registry+https://github.com/rust-lang/crates.io-index)

[nrc]

ping @kennytm should be ready for review

[kennytm]

@bors r+ p=8

[bors]

📌 Commit 9070193 has been approved by kennytm

[bors]

⌛ Testing commit 9070193 with merge beff387...

[bors]

☀️ Test successful - status-appveyor, status-travis
Approved by: kennytm
Pushing beff387 to master...