Bump nightly to 1.37.0

[pietroalbini]

r? @Mark-Simulacrum

[Centril]

r? @Centril @bors r+

[bors]

📌 Commit 924cdd4 has been approved by Centril

[rust-highfive]

The job mingw-check 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.

travis_time:end:029916ab:start=1558607381166388518,finish=1558607381968472076,duration=802083558
$ git checkout -qf FETCH_HEAD
travis_fold:end:git.checkout

Encrypted environment variables have been removed for security reasons.
See https://docs.travis-ci.com/user/pull-requests/#pull-requests-and-security-restrictions
$ export SCCACHE_BUCKET=rust-lang-ci-sccache2
$ export SCCACHE_REGION=us-west-1
$ export GCP_CACHE_BUCKET=rust-lang-ci-cache
$ export AWS_ACCESS_KEY_ID=AKIA46X5W6CZEJZ6XT55
---
[00:05:12]    Compiling synstructure v0.10.1
[00:05:27]    Compiling rustc_macros v0.1.0 (/checkout/src/librustc_macros)
[00:05:34]     Checking syntax_pos v0.0.0 (/checkout/src/libsyntax_pos)
[00:05:36]     Checking rustc_errors v0.0.0 (/checkout/src/librustc_errors)
No output has been received in the last 30m0s, this potentially indicates a stalled build or something wrong with the build itself.
Check the details on how to adjust your build configuration on: https://docs.travis-ci.com/user/common-build-problems/#Build-times-out-because-no-output-was-received
The build has been terminated

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)

[pietroalbini]

@bors p=1

[bors]

⌛ Testing commit 924cdd4 with merge 1d6b25ca4b0b509f5973a32a62fa063e53804ef5...

[bors]

💔 Test failed - checks-travis

[rust-highfive]

The job x86_64-gnu-debug 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.

[00:04:55]    Compiling synstructure v0.10.1
[00:05:09]    Compiling rustc_macros v0.1.0 (/checkout/src/librustc_macros)
[00:05:16]     Checking syntax_pos v0.0.0 (/checkout/src/libsyntax_pos)
[00:05:17]     Checking rustc_errors v0.0.0 (/checkout/src/librustc_errors)
No output has been received in the last 30m0s, this potentially indicates a stalled build or something wrong with the build itself.
Check the details on how to adjust your build configuration on: https://docs.travis-ci.com/user/common-build-problems/#Build-times-out-because-no-output-was-received
The build has been terminated

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)

[mati865]

Possible deadlock in check builds? 3 hangs in a row don't look like a coincidence.

[pietroalbini]

Confirmed locally that enabling parallel rustc compilation deadlocks compiling libsyntax. cc @Zoxc

[Zoxc]

I have a workaround in #60967

[pietroalbini]

@rustbot modify labels: S-blocked -S-waiting-on-review

[pietroalbini]

@bors r=Centril p=10

[bors]

💡 This pull request was already approved, no need to approve it again.

• This pull request previously failed. You should add more commits to fix the bug, or use retry to trigger a build again.
• There's another pull request that is currently being tested, blocking this pull request: Use Symbol more in lint APIs #60827

[bors]

📌 Commit 924cdd4 has been approved by Centril

[bors]

⌛ Testing commit 924cdd4 with merge cd1979f2b4d19da3a5ce7ab5ec62198ff0f7e4f1...

[bors]

💔 Test failed - checks-travis

[rust-highfive]

The job arm-android 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.

[01:42:44] test string::test_str_truncate ... ok
[01:42:44] test string::test_str_truncate_invalid_len ... ok
[01:42:44] test string::test_str_truncate_split_codepoint ... ok
[01:42:44] test str::test_unsafe_slice ... ok
[01:42:44] died due to signal 11
[01:42:44] error: test failed, to rerun pass '-p alloc --test collectionstests'
[01:42:44] 
[01:42:44] 
[01:42:44] command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "test" "--target" "arm-linux-androideabi" "-j" "4" "--release" "--locked" "--color" "always" "--features" "panic-unwind backtrace compiler-builtins-c" "--manifest-path" "/checkout/src/libstd/Cargo.toml" "-p" "alloc" "--"
[01:42:44] 
[01:42:44] 
[01:42:44] failed to run: /checkout/obj/build/bootstrap/debug/bootstrap test --target arm-linux-androideabi
[01:42:44] Build completed unsuccessfully in 1:31:55
---
travis_time:end:0f441fa4:start=1558987816197147461,finish=1558987816206363980,duration=9216519
travis_fold:end:after_failure.3
travis_fold:start:after_failure.4
travis_time:start:06546b1c
$ 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:0f6bfa15
travis_time:start:0f6bfa15
$ 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:000bf496
$ dmesg | grep -i kill

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)

[pietroalbini]

@bors retry #55861

[bors]

⌛ Testing commit 924cdd4 with merge b711179...

[bors]

☀️ Test successful - checks-travis, status-appveyor
Approved by: Centril
Pushing b711179 to master...