[INFO] fetching crate regex 1.2.0...
[INFO] extracting crate regex 1.2.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/regex/1.2.0
[INFO] extracting crate regex 1.2.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/regex/1.2.0
[INFO] validating manifest of regex-1.2.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of regex-1.2.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing regex-1.2.0
[INFO] removed 0 missing tests
[INFO] finished frobbing regex-1.2.0
[INFO] frobbed toml for regex-1.2.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/regex/1.2.0/Cargo.toml
[INFO] started frobbing regex-1.2.0
[INFO] removed 0 missing tests
[INFO] finished frobbing regex-1.2.0
[INFO] frobbed toml for regex-1.2.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/regex/1.2.0/Cargo.toml
[INFO] crate regex-1.2.0 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing regex-1.2.0 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/regex/1.2.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] c6ed34950c77355d910fd28963ec040203096b8ef94a103c3a7089e7f0b85cff
[INFO] running `"docker" "start" "-a" "c6ed34950c77355d910fd28963ec040203096b8ef94a103c3a7089e7f0b85cff"`
[INFO] [stderr]    Compiling ucd-util v0.1.4
[INFO] [stderr]    Compiling regex-syntax v0.6.9
[INFO] [stderr]    Compiling regex v1.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.39s
[INFO] running `"docker" "inspect" "c6ed34950c77355d910fd28963ec040203096b8ef94a103c3a7089e7f0b85cff"`
[INFO] running `"docker" "rm" "-f" "c6ed34950c77355d910fd28963ec040203096b8ef94a103c3a7089e7f0b85cff"`
[INFO] [stdout] c6ed34950c77355d910fd28963ec040203096b8ef94a103c3a7089e7f0b85cff
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/regex/1.2.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 56e7da7adfac08007c6b138b2d41a1cfce5d12194ce3bbc3f6e1b977a154233b
[INFO] running `"docker" "start" "-a" "56e7da7adfac08007c6b138b2d41a1cfce5d12194ce3bbc3f6e1b977a154233b"`
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]    Compiling quickcheck v0.8.5
[INFO] [stderr]    Compiling regex v1.2.0 (/opt/crater/workdir)
[INFO] [stderr] error: Could not compile `regex`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name nfa_bytes tests/test_nfa_bytes.rs --color never --emit=dep-info,link -C debuginfo=2 --test --cfg 'feature="default"' --cfg 'feature="use_std"' -C metadata=bdcfc39d64ef1c4b -C extra-filename=-bdcfc39d64ef1c4b --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern aho_corasick=/opt/crater/target/debug/deps/libaho_corasick-31ecba28bf310ad3.rlib --extern doc_comment=/opt/crater/target/debug/deps/libdoc_comment-4660b98c4826de37.rlib --extern lazy_static=/opt/crater/target/debug/deps/liblazy_static-6a4e8ea56a445919.rlib --extern memchr=/opt/crater/target/debug/deps/libmemchr-e9dad3b9b8c90a38.rlib --extern quickcheck=/opt/crater/target/debug/deps/libquickcheck-5438909cd925ecca.rlib --extern rand=/opt/crater/target/debug/deps/librand-478ec8ce9fba553e.rlib --extern regex=/opt/crater/target/debug/deps/libregex-2e6e79f3babcdbfc.rlib --extern regex_syntax=/opt/crater/target/debug/deps/libregex_syntax-aeca2d4d2172b704.rlib --extern thread_local=/opt/crater/target/debug/deps/libthread_local-1060038c0757fbc7.rlib --extern utf8_ranges=/opt/crater/target/debug/deps/libutf8_ranges-32fecc95d998aacd.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `regex`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name default tests/test_default.rs --color never --emit=dep-info,link -C debuginfo=2 --test --cfg 'feature="default"' --cfg 'feature="use_std"' -C metadata=1a23dae148c307ec -C extra-filename=-1a23dae148c307ec --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern aho_corasick=/opt/crater/target/debug/deps/libaho_corasick-31ecba28bf310ad3.rlib --extern doc_comment=/opt/crater/target/debug/deps/libdoc_comment-4660b98c4826de37.rlib --extern lazy_static=/opt/crater/target/debug/deps/liblazy_static-6a4e8ea56a445919.rlib --extern memchr=/opt/crater/target/debug/deps/libmemchr-e9dad3b9b8c90a38.rlib --extern quickcheck=/opt/crater/target/debug/deps/libquickcheck-5438909cd925ecca.rlib --extern rand=/opt/crater/target/debug/deps/librand-478ec8ce9fba553e.rlib --extern regex=/opt/crater/target/debug/deps/libregex-2e6e79f3babcdbfc.rlib --extern regex_syntax=/opt/crater/target/debug/deps/libregex_syntax-aeca2d4d2172b704.rlib --extern thread_local=/opt/crater/target/debug/deps/libthread_local-1060038c0757fbc7.rlib --extern utf8_ranges=/opt/crater/target/debug/deps/libutf8_ranges-32fecc95d998aacd.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `regex`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name nfa_utf8bytes tests/test_nfa_utf8bytes.rs --color never --emit=dep-info,link -C debuginfo=2 --test --cfg 'feature="default"' --cfg 'feature="use_std"' -C metadata=384b7cc9209fe5c7 -C extra-filename=-384b7cc9209fe5c7 --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern aho_corasick=/opt/crater/target/debug/deps/libaho_corasick-31ecba28bf310ad3.rlib --extern doc_comment=/opt/crater/target/debug/deps/libdoc_comment-4660b98c4826de37.rlib --extern lazy_static=/opt/crater/target/debug/deps/liblazy_static-6a4e8ea56a445919.rlib --extern memchr=/opt/crater/target/debug/deps/libmemchr-e9dad3b9b8c90a38.rlib --extern quickcheck=/opt/crater/target/debug/deps/libquickcheck-5438909cd925ecca.rlib --extern rand=/opt/crater/target/debug/deps/librand-478ec8ce9fba553e.rlib --extern regex=/opt/crater/target/debug/deps/libregex-2e6e79f3babcdbfc.rlib --extern regex_syntax=/opt/crater/target/debug/deps/libregex_syntax-aeca2d4d2172b704.rlib --extern thread_local=/opt/crater/target/debug/deps/libthread_local-1060038c0757fbc7.rlib --extern utf8_ranges=/opt/crater/target/debug/deps/libutf8_ranges-32fecc95d998aacd.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `regex`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name backtrack_utf8bytes tests/test_backtrack_utf8bytes.rs --color never --emit=dep-info,link -C debuginfo=2 --test --cfg 'feature="default"' --cfg 'feature="use_std"' -C metadata=4145b6dabd98502a -C extra-filename=-4145b6dabd98502a --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern aho_corasick=/opt/crater/target/debug/deps/libaho_corasick-31ecba28bf310ad3.rlib --extern doc_comment=/opt/crater/target/debug/deps/libdoc_comment-4660b98c4826de37.rlib --extern lazy_static=/opt/crater/target/debug/deps/liblazy_static-6a4e8ea56a445919.rlib --extern memchr=/opt/crater/target/debug/deps/libmemchr-e9dad3b9b8c90a38.rlib --extern quickcheck=/opt/crater/target/debug/deps/libquickcheck-5438909cd925ecca.rlib --extern rand=/opt/crater/target/debug/deps/librand-478ec8ce9fba553e.rlib --extern regex=/opt/crater/target/debug/deps/libregex-2e6e79f3babcdbfc.rlib --extern regex_syntax=/opt/crater/target/debug/deps/libregex_syntax-aeca2d4d2172b704.rlib --extern thread_local=/opt/crater/target/debug/deps/libthread_local-1060038c0757fbc7.rlib --extern utf8_ranges=/opt/crater/target/debug/deps/libutf8_ranges-32fecc95d998aacd.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `regex`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name backtrack tests/test_backtrack.rs --color never --emit=dep-info,link -C debuginfo=2 --test --cfg 'feature="default"' --cfg 'feature="use_std"' -C metadata=5276f6b42e75b9c6 -C extra-filename=-5276f6b42e75b9c6 --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern aho_corasick=/opt/crater/target/debug/deps/libaho_corasick-31ecba28bf310ad3.rlib --extern doc_comment=/opt/crater/target/debug/deps/libdoc_comment-4660b98c4826de37.rlib --extern lazy_static=/opt/crater/target/debug/deps/liblazy_static-6a4e8ea56a445919.rlib --extern memchr=/opt/crater/target/debug/deps/libmemchr-e9dad3b9b8c90a38.rlib --extern quickcheck=/opt/crater/target/debug/deps/libquickcheck-5438909cd925ecca.rlib --extern rand=/opt/crater/target/debug/deps/librand-478ec8ce9fba553e.rlib --extern regex=/opt/crater/target/debug/deps/libregex-2e6e79f3babcdbfc.rlib --extern regex_syntax=/opt/crater/target/debug/deps/libregex_syntax-aeca2d4d2172b704.rlib --extern thread_local=/opt/crater/target/debug/deps/libthread_local-1060038c0757fbc7.rlib --extern utf8_ranges=/opt/crater/target/debug/deps/libutf8_ranges-32fecc95d998aacd.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `regex`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name default_bytes tests/test_default_bytes.rs --color never --emit=dep-info,link -C debuginfo=2 --test --cfg 'feature="default"' --cfg 'feature="use_std"' -C metadata=4c92128aa6a76871 -C extra-filename=-4c92128aa6a76871 --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern aho_corasick=/opt/crater/target/debug/deps/libaho_corasick-31ecba28bf310ad3.rlib --extern doc_comment=/opt/crater/target/debug/deps/libdoc_comment-4660b98c4826de37.rlib --extern lazy_static=/opt/crater/target/debug/deps/liblazy_static-6a4e8ea56a445919.rlib --extern memchr=/opt/crater/target/debug/deps/libmemchr-e9dad3b9b8c90a38.rlib --extern quickcheck=/opt/crater/target/debug/deps/libquickcheck-5438909cd925ecca.rlib --extern rand=/opt/crater/target/debug/deps/librand-478ec8ce9fba553e.rlib --extern regex=/opt/crater/target/debug/deps/libregex-2e6e79f3babcdbfc.rlib --extern regex_syntax=/opt/crater/target/debug/deps/libregex_syntax-aeca2d4d2172b704.rlib --extern thread_local=/opt/crater/target/debug/deps/libthread_local-1060038c0757fbc7.rlib --extern utf8_ranges=/opt/crater/target/debug/deps/libutf8_ranges-32fecc95d998aacd.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "56e7da7adfac08007c6b138b2d41a1cfce5d12194ce3bbc3f6e1b977a154233b"`
[INFO] running `"docker" "rm" "-f" "56e7da7adfac08007c6b138b2d41a1cfce5d12194ce3bbc3f6e1b977a154233b"`
[INFO] [stdout] 56e7da7adfac08007c6b138b2d41a1cfce5d12194ce3bbc3f6e1b977a154233b