[INFO] fetching crate rug-polynomial 0.2.0...
[INFO] checking rug-polynomial-0.2.0 against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] extracting crate rug-polynomial 0.2.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate rug-polynomial 0.2.0 on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rug-polynomial 0.2.0
[INFO] finished tweaking crates.io crate rug-polynomial 0.2.0
[INFO] tweaked toml for crates.io crate rug-polynomial 0.2.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate rug-polynomial 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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] 4ac26a0525c69fea9d4293e7c9318e4ff640ea9f06823a163398ea767e8608b1
[INFO] running `Command { std: "docker" "start" "-a" "4ac26a0525c69fea9d4293e7c9318e4ff640ea9f06823a163398ea767e8608b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ac26a0525c69fea9d4293e7c9318e4ff640ea9f06823a163398ea767e8608b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ac26a0525c69fea9d4293e7c9318e4ff640ea9f06823a163398ea767e8608b1", kill_on_drop: false }`
[INFO] [stdout] 4ac26a0525c69fea9d4293e7c9318e4ff640ea9f06823a163398ea767e8608b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8619a4475a7eae49f52b52ed1ef702bf957d260bc0ac3b5982fb00f7d5915579
[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" "8619a4475a7eae49f52b52ed1ef702bf957d260bc0ac3b5982fb00f7d5915579", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.85
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.4.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling rug v1.11.0
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]     Checking az v1.1.0
[INFO] [stderr]     Checking thread_local v1.1.2
[INFO] [stderr]    Compiling flint-sys v0.3.0
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stderr]    Compiling quickcheck_macros v0.9.1
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "8619a4475a7eae49f52b52ed1ef702bf957d260bc0ac3b5982fb00f7d5915579", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8619a4475a7eae49f52b52ed1ef702bf957d260bc0ac3b5982fb00f7d5915579", kill_on_drop: false }`
[INFO] [stdout] 8619a4475a7eae49f52b52ed1ef702bf957d260bc0ac3b5982fb00f7d5915579