[INFO] fetching crate rug-maths 0.2.5...
[INFO] crate rug-maths 0.2.5 is already in cache
[INFO] crate rug-maths 0.2.5 is already in cache
[INFO] crate rug-maths 0.2.5 is already in cache
[INFO] crate rug-maths 0.2.5 is already in cache
[INFO] crate rug-maths 0.2.5 is already in cache
[INFO] crate rug-maths 0.2.5 is already in cache
[INFO] crate rug-maths 0.2.5 is already in cache
[INFO] crate rug-maths 0.2.5 is already in cache
[INFO] crate rug-maths 0.2.5 is already in cache
[INFO] crate rug-maths 0.2.5 is already in cache
[INFO] crate rug-maths 0.2.5 is already in cache
[INFO] crate rug-maths 0.2.5 is already in cache
[INFO] crate rug-maths 0.2.5 is already in cache
[INFO] crate rug-maths 0.2.5 is already in cache
[INFO] checking rug-maths-0.2.5 against master#ea6ab1bd845790fb31ba790d2c7aec898f89fe62 for pr-99880
[INFO] extracting crate rug-maths 0.2.5 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate rug-maths 0.2.5 on toolchain ea6ab1bd845790fb31ba790d2c7aec898f89fe62
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ea6ab1bd845790fb31ba790d2c7aec898f89fe62" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rug-maths 0.2.5
[INFO] finished tweaking crates.io crate rug-maths 0.2.5
[INFO] tweaked toml for crates.io crate rug-maths 0.2.5 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ea6ab1bd845790fb31ba790d2c7aec898f89fe62" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ea6ab1bd845790fb31ba790d2c7aec898f89fe62" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded az v1.2.1
[INFO] [stderr]   Downloaded maths-traits v0.2.1
[INFO] [stderr]   Downloaded rug v1.16.0
[INFO] [stderr]   Downloaded gmp-mpfr-sys v1.4.9
[INFO] running `Command { std: "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" "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:ecb52c4cf6672b83cc996368a05b4a059042425f2b6ba9cd23a06cdead5d8d70" "/opt/rustwide/cargo-home/bin/cargo" "+ea6ab1bd845790fb31ba790d2c7aec898f89fe62" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5131e693a718b8553587070effc5be38d66f191c0f177f74fd92284492172542
[INFO] running `Command { std: "docker" "start" "-a" "5131e693a718b8553587070effc5be38d66f191c0f177f74fd92284492172542", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5131e693a718b8553587070effc5be38d66f191c0f177f74fd92284492172542", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5131e693a718b8553587070effc5be38d66f191c0f177f74fd92284492172542", kill_on_drop: false }`
[INFO] [stdout] 5131e693a718b8553587070effc5be38d66f191c0f177f74fd92284492172542
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--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:ecb52c4cf6672b83cc996368a05b4a059042425f2b6ba9cd23a06cdead5d8d70" "/opt/rustwide/cargo-home/bin/cargo" "+ea6ab1bd845790fb31ba790d2c7aec898f89fe62" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ec3ad0f81c344ceb27f1b2bf4794d81f184182fe46bb9372703490dbdcc8858
[INFO] running `Command { std: "docker" "start" "-a" "2ec3ad0f81c344ceb27f1b2bf4794d81f184182fe46bb9372703490dbdcc8858", kill_on_drop: false }`
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.4.9
[INFO] [stderr]    Compiling libc v0.2.127
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling rug v1.16.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking maths-traits v0.2.1
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "2ec3ad0f81c344ceb27f1b2bf4794d81f184182fe46bb9372703490dbdcc8858", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ec3ad0f81c344ceb27f1b2bf4794d81f184182fe46bb9372703490dbdcc8858", kill_on_drop: false }`
[INFO] [stdout] 2ec3ad0f81c344ceb27f1b2bf4794d81f184182fe46bb9372703490dbdcc8858