[INFO] fetching crate regex 1.4.2...
[INFO] testing regex-1.4.2 against 1.49.0 for beta-1.50-1
[INFO] extracting crate regex 1.4.2 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate regex 1.4.2 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate regex 1.4.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate regex 1.4.2
[INFO] tweaked toml for crates.io crate regex 1.4.2 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate regex 1.4.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1bdde6218a2970c6c3d030841a9e7037b034fa3e3185516e03eb9de349df0254
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1bdde6218a2970c6c3d030841a9e7037b034fa3e3185516e03eb9de349df0254", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bdde6218a2970c6c3d030841a9e7037b034fa3e3185516e03eb9de349df0254", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bdde6218a2970c6c3d030841a9e7037b034fa3e3185516e03eb9de349df0254", kill_on_drop: false }`
[INFO] [stdout] 1bdde6218a2970c6c3d030841a9e7037b034fa3e3185516e03eb9de349df0254
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 82281755ea429577d76b40a698a860b4ff8212fe5fcdddf63494e4a639f0208d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "82281755ea429577d76b40a698a860b4ff8212fe5fcdddf63494e4a639f0208d", kill_on_drop: false }`
[INFO] [stderr]    Compiling aho-corasick v0.7.14
[INFO] [stderr]    Compiling regex v1.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.98s
[INFO] running `Command { std: "docker" "inspect" "82281755ea429577d76b40a698a860b4ff8212fe5fcdddf63494e4a639f0208d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82281755ea429577d76b40a698a860b4ff8212fe5fcdddf63494e4a639f0208d", kill_on_drop: false }`
[INFO] [stdout] 82281755ea429577d76b40a698a860b4ff8212fe5fcdddf63494e4a639f0208d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f9bd3e2644057e63cf48bcc4253c50e3a81a09f1b2bb1aff129d21f9afe4dd71
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f9bd3e2644057e63cf48bcc4253c50e3a81a09f1b2bb1aff129d21f9afe4dd71", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling quickcheck v0.8.5
[INFO] [stderr]    Compiling regex v1.4.2 (/opt/rustwide/workdir)
[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 --error-format=json --json=diagnostic-rendered-ansi --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="aho-corasick"' --cfg 'feature="default"' --cfg 'feature="memchr"' --cfg 'feature="perf"' --cfg 'feature="perf-cache"' --cfg 'feature="perf-dfa"' --cfg 'feature="perf-inline"' --cfg 'feature="perf-literal"' --cfg 'feature="std"' --cfg 'feature="thread_local"' --cfg 'feature="unicode"' --cfg 'feature="unicode-age"' --cfg 'feature="unicode-bool"' --cfg 'feature="unicode-case"' --cfg 'feature="unicode-gencat"' --cfg 'feature="unicode-perl"' --cfg 'feature="unicode-script"' --cfg 'feature="unicode-segment"' -C metadata=67ddf2fae5a1839b -C extra-filename=-67ddf2fae5a1839b --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern aho_corasick=/opt/rustwide/target/debug/deps/libaho_corasick-fededd8d40f1417d.rlib --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-7895c92c6d278491.rlib --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-e03602aba27a22bc.rlib --extern quickcheck=/opt/rustwide/target/debug/deps/libquickcheck-d67d1ab874fef5ad.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-41bbd85c64097ce2.rlib --extern regex=/opt/rustwide/target/debug/deps/libregex-e89402436ced14b4.rlib --extern regex_syntax=/opt/rustwide/target/debug/deps/libregex_syntax-2b91d401512672d8.rlib --extern thread_local=/opt/rustwide/target/debug/deps/libthread_local-76e36b18ae5ab5a5.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 `Command { std: "docker" "inspect" "f9bd3e2644057e63cf48bcc4253c50e3a81a09f1b2bb1aff129d21f9afe4dd71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9bd3e2644057e63cf48bcc4253c50e3a81a09f1b2bb1aff129d21f9afe4dd71", kill_on_drop: false }`
[INFO] [stdout] f9bd3e2644057e63cf48bcc4253c50e3a81a09f1b2bb1aff129d21f9afe4dd71