[INFO] fetching crate polynomial-ring 0.5.0...
[INFO] checking polynomial-ring-0.5.0 against master#38b96553112dce3de630890701f17d86e265f6ba for pr-108867
[INFO] extracting crate polynomial-ring 0.5.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate polynomial-ring 0.5.0 on toolchain 38b96553112dce3de630890701f17d86e265f6ba
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38b96553112dce3de630890701f17d86e265f6ba" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polynomial-ring 0.5.0
[INFO] finished tweaking crates.io crate polynomial-ring 0.5.0
[INFO] tweaked toml for crates.io crate polynomial-ring 0.5.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+38b96553112dce3de630890701f17d86e265f6ba" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38b96553112dce3de630890701f17d86e265f6ba" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded auto-impl-ops v0.1.2
[INFO] [stderr]   Downloaded rug v1.19.1
[INFO] [stderr]   Downloaded gmp-mpfr-sys v1.5.1
[INFO] [stderr]   Downloaded ring-algorithm v0.6.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:e2a9e7e193985ba0d5a8221c3984785a9e0a75acc409a02815633ff67a1f464e" "/opt/rustwide/cargo-home/bin/cargo" "+38b96553112dce3de630890701f17d86e265f6ba" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9bf476c912043bc72141b5b5bcbd617a3cddd7e72507c4c108919d32bdd76f96
[INFO] running `Command { std: "docker" "start" "-a" "9bf476c912043bc72141b5b5bcbd617a3cddd7e72507c4c108919d32bdd76f96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9bf476c912043bc72141b5b5bcbd617a3cddd7e72507c4c108919d32bdd76f96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bf476c912043bc72141b5b5bcbd617a3cddd7e72507c4c108919d32bdd76f96", kill_on_drop: false }`
[INFO] [stdout] 9bf476c912043bc72141b5b5bcbd617a3cddd7e72507c4c108919d32bdd76f96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:e2a9e7e193985ba0d5a8221c3984785a9e0a75acc409a02815633ff67a1f464e" "/opt/rustwide/cargo-home/bin/cargo" "+38b96553112dce3de630890701f17d86e265f6ba" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d9e3d382ea19fb2ee2ed80e08ad395ad7b7572ba5ccb56776866b8f6ffa058d
[INFO] running `Command { std: "docker" "start" "-a" "3d9e3d382ea19fb2ee2ed80e08ad395ad7b7572ba5ccb56776866b8f6ffa058d", kill_on_drop: false }`
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.5.1
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling rug v1.19.1
[INFO] [stderr]    Compiling strum_macros v0.24.3
[INFO] [stderr]    Compiling derive-syn-parse v0.1.5
[INFO] [stderr]     Checking ring-algorithm v0.6.1
[INFO] [stderr]    Compiling strum v0.24.1
[INFO] [stderr]    Compiling auto-impl-ops v0.1.2
[INFO] [stderr]     Checking polynomial-ring v0.5.0 (/opt/rustwide/workdir)
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "3d9e3d382ea19fb2ee2ed80e08ad395ad7b7572ba5ccb56776866b8f6ffa058d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d9e3d382ea19fb2ee2ed80e08ad395ad7b7572ba5ccb56776866b8f6ffa058d", kill_on_drop: false }`
[INFO] [stdout] 3d9e3d382ea19fb2ee2ed80e08ad395ad7b7572ba5ccb56776866b8f6ffa058d