report fatal errors during doctest parsing

[euclio]

Fixes#59557.

[rust-highfive]

r? @steveklabnik

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[euclio]

r? @QuietMisdreavus

[rust-highfive]

The job x86_64-gnu-llvm-6.0 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.

travis_time:end:0d869606:start=1556070157981840191,finish=1556070243991411815,duration=86009571624
$ 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
---
travis_time:start:test_assembly
Check compiletest suite=assembly mode=assembly (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
[01:13:28] [01:13:28] running 9 tests
[01:13:28] iiiiiiiii
[01:13:28] [01:13:28] finished in 0.149
[01:13:28] travis_fold:end:test_assembly
---
travis_time:start:test_debuginfo
Check compiletest suite=debuginfo mode=debuginfo-both (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
[01:13:44] [01:13:44] running 121 tests
[01:14:09] .iiiii...i.....i..i...i..i.i.i..i.ii...i.....i..i....i..........iiii..........i...ii...i.......ii.i. 100/121
[01:14:13] i.i......iii.i.....ii
[01:14:13] [01:14:13] finished in 29.605
[01:14:13] travis_fold:end:test_debuginfo
---
[01:43:46] [01:43:46] running 25 tests
[01:43:58] thread 'main' panicked at 'Some tests failed', src/tools/compiletest/src/main.rs:517:22
[01:43:58] note: Run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
[01:43:58] ....................F....
[01:43:58] [01:43:58] ---- [ui] rustdoc-ui/unparseable-doc-test.rs stdout ----
[01:43:58] diff of stdout:
[01:43:58] [01:43:58] [01:43:58] 1 [01:43:58] 2 running 2 tests
[01:43:58] - test $DIR/unparseable-doc-test.rs - a (line 6) ... FAILED
[01:43:58] 4 test $DIR/unparseable-doc-test.rs - b (line 12) ... FAILED
[01:43:58] + test $DIR/unparseable-doc-test.rs - a (line 6) ... FAILED
[01:43:58] 6 failures:
[01:43:58] 7 [01:43:58] [01:43:58] [01:43:58] + ---- $DIR/unparseable-doc-test.rs - b (line 12) stdout ----
[01:43:58] + error: unterminated double quote string
[01:43:58] + --> $DIR/unparseable-doc-test.rs:14:1
[01:43:58] + 2 | "unterminated
[01:43:58] + | ^^^^^^^^^^^^^
[01:43:58] + [01:43:58] + error: aborting due to previous error
[01:43:58] + error: aborting due to previous error
[01:43:58] + [01:43:58] + thread '$DIR/unparseable-doc-test.rs - b (line 12)' panicked at 'couldn't compile the test', src/librustdoc/test.rs:319:13
[01:43:58] + note: Run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
[01:43:58] + [01:43:58] 8 ---- $DIR/unparseable-doc-test.rs - a (line 6) stdout ----
[01:43:58] 10 --> $DIR/unparseable-doc-test.rs:8:1
[01:43:58] [01:43:58] 19 error: aborting due to previous error
[01:43:58] 20 [01:43:58] 20 [01:43:58] 21 thread '$DIR/unparseable-doc-test.rs - a (line 6)' panicked at 'couldn't compile the test', src/librustdoc/test.rs:319:13
[01:43:58] - note: Run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
[01:43:58] - [01:43:58] - ---- $DIR/unparseable-doc-test.rs - b (line 12) stdout ----
[01:43:58] - error: unterminated double quote string
[01:43:58] - --> $DIR/unparseable-doc-test.rs:14:1
[01:43:58] - 2 | "unterminated
[01:43:58] - | ^^^^^^^^^^^^^
[01:43:58] - [01:43:58] - error: aborting due to previous error
[01:43:58] - error: aborting due to previous error
[01:43:58] - [01:43:58] - thread '$DIR/unparseable-doc-test.rs - b (line 12)' panicked at 'couldn't compile the test', src/librustdoc/test.rs:319:13
[01:43:58] 35 [01:43:58] 36 failures:
[01:43:58] [01:43:58] [01:43:58] [01:43:58] The actual stdout differed from the expected stdout.
[01:43:58] Actual stdout saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/rustdoc-ui/unparseable-doc-test/unparseable-doc-test.stdout
[01:43:58] To update references, rerun the tests and pass the `--bless` flag
[01:43:58] To only update this specific test, also pass `--test-args unparseable-doc-test.rs`
[01:43:58] error: 1 errors occurred comparing output.
[01:43:58] status: exit code: 101
[01:43:58] status: exit code: 101
[01:43:58] command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustdoc" "/checkout/src/test/rustdoc-ui/unparseable-doc-test.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-o" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/rustdoc-ui/unparseable-doc-test/a" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "--test" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/rustdoc-ui/unparseable-doc-test/auxiliary"
[01:43:58] ------------------------------------------
[01:43:58] [01:43:58] running 2 tests
[01:43:58] running 2 tests
[01:43:58] test /checkout/src/test/rustdoc-ui/unparseable-doc-test.rs - b (line 12) ... FAILED
[01:43:58] test /checkout/src/test/rustdoc-ui/unparseable-doc-test.rs - a (line 6) ... FAILED
[01:43:58] failures:
[01:43:58] [01:43:58] [01:43:58] ---- /checkout/src/test/rustdoc-ui/unparseable-doc-test.rs - b (line 12) stdout ----
[01:43:58] error: unterminated double quote string
[01:43:58] --> /checkout/src/test/rustdoc-ui/unparseable-doc-test.rs:14:1
[01:43:58] 2 | "unterminated
[01:43:58] | ^^^^^^^^^^^^^
[01:43:58] [01:43:58] error: aborting due to previous error
[01:43:58] error: aborting due to previous error
[01:43:58] [01:43:58] thread '/checkout/src/test/rustdoc-ui/unparseable-doc-test.rs - b (line 12)' panicked at 'couldn't compile the test', src/librustdoc/test.rs:319:13
[01:43:58] [01:43:58] [01:43:58] ---- /checkout/src/test/rustdoc-ui/unparseable-doc-test.rs - a (line 6) stdout ----
[01:43:58] --> /checkout/src/test/rustdoc-ui/unparseable-doc-test.rs:8:1
[01:43:58] |
[01:43:58] 2 | `
[01:43:58] | ^
[01:43:58] | ^
[01:43:58] help: Unicode character '`' (Grave Accent) looks like ''' (Single Quote), but it is not
[01:43:58] |
[01:43:58] 2 | '
[01:43:58] |
[01:43:58] [01:43:58] error: aborting due to previous error
[01:43:58] [01:43:58] thread '/checkout/src/test/rustdoc-ui/unparseable-doc-test.rs - a (line 6)' panicked at 'couldn't compile the test', src/librustdoc/test.rs:319:13
[01:43:58] [01:43:58] failures:
[01:43:58] failures:
[01:43:58] /checkout/src/test/rustdoc-ui/unparseable-doc-test.rs - a (line 6)
[01:43:58] /checkout/src/test/rustdoc-ui/unparseable-doc-test.rs - b (line 12)
[01:43:58] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out
[01:43:58] [01:43:58] [01:43:58] ------------------------------------------
---
[01:43:58] test result: FAILED. 24 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[01:43:58] [01:43:58] [01:43:58] [01:43:58] command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0-tools-bin/compiletest" "--compile-lib-path" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/lib" "--run-lib-path" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/lib/rustlib/x86_64-unknown-linux-gnu/lib" "--rustc-path" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "--rustdoc-path" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustdoc" "--src-base" "/checkout/src/test/rustdoc-ui" "--build-base" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/rustdoc-ui" "--stage-id" "stage2-x86_64-unknown-linux-gnu" "--mode" "ui" "--target" "x86_64-unknown-linux-gnu" "--host" "x86_64-unknown-linux-gnu" "--llvm-filecheck" "/usr/lib/llvm-6.0/bin/FileCheck" "--host-rustcflags" "-Zunstable-options -Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "--target-rustcflags" "-Zunstable-options -Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "--docck-python" "/usr/bin/python2.7" "--lldb-python" "/usr/bin/python2.7" "--gdb" "/usr/bin/gdb" "--quiet" "--llvm-version" "6.0.0\n" "--system-llvm" "--cc" "" "--cxx" "" "--cflags" "" "--llvm-components" "" "--llvm-cxxflags" "" "--adb-path" "adb" "--adb-test-dir" "/data/tmp/work" "--android-cross-path" "" "--color" "always"
[01:43:58] [01:43:58] [01:43:58] failed to run: /checkout/obj/build/bootstrap/debug/bootstrap test
[01:43:58] Build completed unsuccessfully in 0:41:56
[01:43:58] Build completed unsuccessfully in 0:41:56
[01:43:58] Makefile:48: recipe for target 'check' failed
[01:43:58] make: *** [check] Error 1
The command "stamp sh -x -c "$RUN_SCRIPT"" exited with 2.
travis_time:start:01fa3a71
$ date && (curl -fs --head https://google.com | grep ^Date: | sed 's/Date: //g' || true)
Wed Apr 24 03:28:12 UTC 2019
---
travis_time:end:0db0924c:start=1556076493883255987,finish=1556076493940466172,duration=57210185
travis_fold:end:after_failure.4
travis_fold:start:after_failure.5
travis_time:start:26722600
$ 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:07b0e198
$ 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)

[QuietMisdreavus]

Thanks so much! I'm glad the fix was that straightforward.

[QuietMisdreavus]

@bors r+

[bors]

📌 Commit a912664 has been approved by QuietMisdreavus