[INFO] fetching crate wilo 0.3.0...
[INFO] testing wilo-0.3.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate wilo 0.3.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate wilo 0.3.0 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 wilo 0.3.0
[INFO] finished tweaking crates.io crate wilo 0.3.0
[INFO] tweaked toml for crates.io crate wilo 0.3.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate wilo 0.3.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 344808c2318ac82bee860540bed1a51361481f1d75c066ea0bce5dc14f87cb07
[INFO] running `Command { std: "docker" "start" "-a" "344808c2318ac82bee860540bed1a51361481f1d75c066ea0bce5dc14f87cb07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "344808c2318ac82bee860540bed1a51361481f1d75c066ea0bce5dc14f87cb07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "344808c2318ac82bee860540bed1a51361481f1d75c066ea0bce5dc14f87cb07", kill_on_drop: false }`
[INFO] [stdout] 344808c2318ac82bee860540bed1a51361481f1d75c066ea0bce5dc14f87cb07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 568f0f2456e22c3fdfd569c9f971773b93ebd78304083e7c588753faab3aeb45
[INFO] running `Command { std: "docker" "start" "-a" "568f0f2456e22c3fdfd569c9f971773b93ebd78304083e7c588753faab3aeb45", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.13
[INFO] [stderr]    Compiling syn v1.0.22
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling utf8parse v0.1.1
[INFO] [stderr]    Compiling xi-unicode v0.2.0
[INFO] [stderr]    Compiling memmem v0.1.1
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling signal-hook-registry v1.2.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling termios v0.3.2
[INFO] [stderr]    Compiling lexical-core v0.6.7
[INFO] [stderr]    Compiling ordered-float v1.0.2
[INFO] [stderr]    Compiling vtparse v0.2.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling signal-hook v0.1.15
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling quote v1.0.5
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr] error: could not compile `vtparse`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name vtparse --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/vtparse-0.2.2/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=b71a63fc7d20b4a7 -C extra-filename=-b71a63fc7d20b4a7 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern utf8parse=/opt/rustwide/target/debug/deps/libutf8parse-d12f047ad11675cf.rmeta --cap-lints allow --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" "568f0f2456e22c3fdfd569c9f971773b93ebd78304083e7c588753faab3aeb45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "568f0f2456e22c3fdfd569c9f971773b93ebd78304083e7c588753faab3aeb45", kill_on_drop: false }`
[INFO] [stdout] 568f0f2456e22c3fdfd569c9f971773b93ebd78304083e7c588753faab3aeb45