Rollup of 7 pull requests

[Centril]

Successful merges:

• improve docs for std::hint::unreachable_unchecked() #59717 (improve docs for std::hint::unreachable_unchecked())
• Limit dylib symbols #59752 (Limit dylib symbols)
• Continue evaluating after missing main #59903 (Continue evaluating after missing main)
• Bump bootstrap compiler to 2019-04-11 #59974 (Bump bootstrap compiler to 2019-04-11)
• rustdoc: use --static-root-path for settings.js #59992 (rustdoc: use --static-root-path for settings.js)
• Update cargo #59997 (Update cargo)
• Add repo-specific triagebot configuration #60000 (Add repo-specific triagebot configuration)

Failed merges:

r? @ghost

[Centril]

@bors r+ p=7

[bors]

📌 Commit 77e7b73 has been approved by Centril

[bors]

⌛ Testing commit 77e7b73 with merge b1e62d2469135f36300e77308186417ca2885eda...

[bors]

💔 Test failed - checks-travis

[rust-highfive]

The job i686-apple 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.

[00:03:09]       Memory: 8 GB
[00:03:09]       Boot ROM Version: VMW71.00V.7581552.B64.1801142334
[00:03:09]       Apple ROM Info: [MS_VM_CERT/SHA1/27d66596a61c48dd3dc7216fd715126e33f59ae7]Welcome to the Virtual Machine
[00:03:09]       SMC Version (system): 2.8f0
[00:03:09]       Serial Number (system): VMCDriMuXUZC
[00:03:09] 
[00:03:09] hw.ncpu: 4
[00:03:09] hw.byteorder: 1234
[00:03:09] hw.memsize: 8589934592
---
[01:17:40]    Compiling rustfix v0.4.4
[01:17:42] [RUSTC-TIMING] rustfix test:false 1.988
[01:17:42]    Compiling compiletest v0.0.0 (/Users/travis/build/rust-lang/rust/src/tools/compiletest)
[01:17:42] error: the item `libc` is imported redundantly
[01:17:42]   --> src/tools/compiletest/src/raise_fd_limit.rs:10:9
[01:17:42] 10 |     use libc;
[01:17:42]    |         ^^^^
[01:17:42]    | 
[01:17:42]   ::: src/tools/compiletest/src/main.rs:7:1
[01:17:42]   ::: src/tools/compiletest/src/main.rs:7:1
[01:17:42]    |
[01:17:42] 7  | extern crate libc;
[01:17:42]    | ------------------ the item `libc` is already imported here
[01:17:42]    |
[01:17:42] note: lint level defined here
[01:17:42]   --> src/tools/compiletest/src/main.rs:4:9
[01:17:42]    |
[01:17:42] 4  | #![deny(warnings, rust_2018_idioms)]
[01:17:42]    = note: #[deny(unused_imports)] implied by #[deny(warnings)]
[01:17:42] 
[01:17:43] error: aborting due to previous error
[01:17:43] 
---
[01:17:43] command did not execute successfully: "/Users/travis/build/rust-lang/rust/build/i686-apple-darwin/stage0/bin/cargo" "build" "--target" "i686-apple-darwin" "-j" "4" "--release" "--locked" "--color" "always" "--manifest-path" "/Users/travis/build/rust-lang/rust/src/tools/compiletest/Cargo.toml" "--message-format" "json"
[01:17:43] expected success, got: exit code: 101
[01:17:43] failed to run: /Users/travis/build/rust-lang/rust/build/bootstrap/debug/bootstrap test
[01:17:43] Build completed unsuccessfully in 0:01:50
[01:17:43] make: *** [check] Error 1
The command "stamp sh -x -c "$RUN_SCRIPT"" exited with 2.
travis_time:start:0233886c
$ date && (curl -fs --head https://google.com | grep ^Date: | sed 's/Date: //g' || true)
Mon Apr 15 23:39:26 GMT 2019
---
travis_fold:start:after_failure.2
travis_time:start:00b3f24a
$ ls -lat $HOME/Library/Logs/DiagnosticReports/
total 0
drwx------+ 15 travis  staff  510 Jan 25  2018 ..
drwx------   2 travis  staff   68 Dec  6  2017 .
travis_fold:end:after_failure.2
travis_fold:start:after_failure.3
travis_time:start:05faaf98
$ find $HOME/Library/Logs/DiagnosticReports -type f -name '*.crash' -not -name '*.stage2-*.crash' -not -name 'com.apple.CoreSimulator.CoreSimulatorService-*.crash' -exec printf travis_fold":start:crashlog\n\033[31;1m%s\033[0m\n" {} \; -exec head -750 {} \; -exec echo travis_fold":"end:crashlog \; || true
$ find $HOME/Library/Logs/DiagnosticReports -type f -name '*.crash' -not -name '*.stage2-*.crash' -not -name 'com.apple.CoreSimulator.CoreSimulatorService-*.crash' -exec printf travis_fold":start:crashlog\n\033[31;1m%s\033[0m\n" {} \; -exec head -750 {} \; -exec echo travis_fold":"end:crashlog \; || true
travis_time:end:05faaf98:start=1555371569734129000,finish=1555371569761930000,duration=27801000
travis_fold:end:after_failure.3
travis_fold:start:after_failure.4
travis_time:start:0c91d2b2
$ 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:1611f047
travis_time:start:1611f047
$ 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:0224127c
$ dmesg | grep -i kill
$ dmesg | grep -i kill
Unable to obtain kernel buffer: Operation not permitted
usage: sudo dmesg
travis_fold:end:after_failure.6

Done. Your build exited with 1.

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