[INFO] fetching crate regex 1.3.1...
[INFO] checking regex-1.3.1 against try#38f08371587f97c145dedb2c055ac7b01bf1e788 for pr-65294
[INFO] extracting crate regex 1.3.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate regex 1.3.1 on toolchain 38f08371587f97c145dedb2c055ac7b01bf1e788
[INFO] running `"/workspace/cargo-home/bin/cargo" "+38f08371587f97c145dedb2c055ac7b01bf1e788" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate regex 1.3.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate regex 1.3.1
[INFO] tweaked toml for crates.io crate regex 1.3.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate regex 1.3.1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+38f08371587f97c145dedb2c055ac7b01bf1e788" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+38f08371587f97c145dedb2c055ac7b01bf1e788" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8ccca30ed422f22d0b80a3d79a7abfd37b7229c051db7c9889dcfd14968f4229
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "8ccca30ed422f22d0b80a3d79a7abfd37b7229c051db7c9889dcfd14968f4229"`
[INFO] [stderr]     Checking regex v1.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking quickcheck v0.8.5
[INFO] [stderr] error: could not compile `regex`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name backtrack_bytes tests/test_backtrack_bytes.rs --color never --emit=dep-info,metadata -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=a02898566d521897 -C extra-filename=-a02898566d521897 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern aho_corasick=/opt/rustwide/target/debug/deps/libaho_corasick-67ea59e782440bab.rmeta --extern doc_comment=/opt/rustwide/target/debug/deps/libdoc_comment-4e2f1f052a0c78de.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-f508f2708210c4a8.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-d119abfe496abebd.rmeta --extern quickcheck=/opt/rustwide/target/debug/deps/libquickcheck-98a74a16168fee88.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-2e888ad03d0dab91.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-7f3a26ecc92a1a74.rmeta --extern regex_syntax=/opt/rustwide/target/debug/deps/libregex_syntax-f58280baae6e2c9d.rmeta --extern thread_local=/opt/rustwide/target/debug/deps/libthread_local-701d3bdb17d03ace.rmeta --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "8ccca30ed422f22d0b80a3d79a7abfd37b7229c051db7c9889dcfd14968f4229"`
[INFO] running `"docker" "rm" "-f" "8ccca30ed422f22d0b80a3d79a7abfd37b7229c051db7c9889dcfd14968f4229"`
[INFO] [stdout] 8ccca30ed422f22d0b80a3d79a7abfd37b7229c051db7c9889dcfd14968f4229