[INFO] cloning repository https://github.com/adriamb/rblock
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/adriamb/rblock" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadriamb%2Frblock"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadriamb%2Frblock'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1e70618b4428ccd50e6870317014e6365cd4260e
[INFO] checking adriamb/rblock against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadriamb%2Frblock" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/adriamb/rblock on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/adriamb/rblock
[INFO] finished tweaking git repo https://github.com/adriamb/rblock
[INFO] tweaked toml for git repo https://github.com/adriamb/rblock written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/adriamb/rblock already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f0543ed51ece41b92d9754c0de14267154eeb849ed5e2f7d4c70ff846b0ef5f2
[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" "f0543ed51ece41b92d9754c0de14267154eeb849ed5e2f7d4c70ff846b0ef5f2"`
[INFO] [stderr]    Compiling arrayvec v0.4.9
[INFO] [stderr]     Checking edit-distance v2.0.1
[INFO] [stderr]     Checking memzero v0.1.0 (https://github.com/paritytech/parity.git#8b6c5be6)
[INFO] [stderr]    Compiling regex-syntax v0.6.4
[INFO] [stderr]    Compiling pest v2.1.0
[INFO] [stderr]     Checking itertools v0.5.10
[INFO] [stderr]     Checking tokio-timer v0.1.2
[INFO] [stderr]    Compiling num_cpus v1.9.0
[INFO] [stderr]    Compiling rand_chacha v0.1.0
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling which v1.0.5
[INFO] [stderr]     Checking nix v0.11.0
[INFO] [stderr]     Checking ethereum-types-serialize v0.2.1
[INFO] [stderr]     Checking serde_cbor v0.9.0
[INFO] [stderr]     Checking uint v0.4.1
[INFO] [stderr]    Compiling rust-embed-impl v4.2.0
[INFO] [stderr]     Checking fixed-hash v0.2.5
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking uuid v0.7.1
[INFO] [stderr]     Checking threadpool v1.7.1
[INFO] [stderr]     Checking twoway v0.1.8
[INFO] [stderr]     Checking buf_redux v0.8.1
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]     Checking hyper v0.10.15
[INFO] [stderr]     Checking serde_urlencoded v0.5.4
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking gzip-header v0.2.0
[INFO] [stderr]     Checking tokio-io v0.1.10
[INFO] [stderr]     Checking rand_pcg v0.1.1
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking ethbloom v0.5.0
[INFO] [stderr]     Checking rust-crypto v0.2.36
[INFO] [stderr]    Compiling serde_derive v1.0.82
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[INFO] [stderr]     Checking parity-wordlist v1.2.1
[INFO] [stderr]     Checking rust-embed v4.2.0
[INFO] [stderr]     Checking deflate v0.7.19
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]    Compiling pest_meta v2.1.0
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking h2 v0.1.14
[INFO] [stderr]    Compiling mime_guess v1.8.6
[INFO] [stderr]     Checking ethereum-types v0.4.0
[INFO] [stderr]     Checking tiny_http v0.6.1
[INFO] [stderr]     Checking stderrlog v0.4.1
[INFO] [stderr]    Compiling cexpr v0.2.3
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]     Checking tokio-reactor v0.1.7
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr] error: could not compile `regex-syntax`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name regex_syntax /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-syntax-0.6.4/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 -C metadata=272e042b00dcc371 -C extra-filename=-272e042b00dcc371 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern ucd_util=/opt/rustwide/target/debug/deps/libucd_util-ef8ecf23d2ec5379.rmeta --cap-lints allow --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" "f0543ed51ece41b92d9754c0de14267154eeb849ed5e2f7d4c70ff846b0ef5f2"`
[INFO] running `"docker" "rm" "-f" "f0543ed51ece41b92d9754c0de14267154eeb849ed5e2f7d4c70ff846b0ef5f2"`
[INFO] [stdout] f0543ed51ece41b92d9754c0de14267154eeb849ed5e2f7d4c70ff846b0ef5f2