[INFO] fetching crate polynomial-ring 0.5.1...
[INFO] checking polynomial-ring-0.5.1 against master#42f4793e5a514858221b07ac379029d90353913e for pr-148952
[INFO] extracting crate polynomial-ring 0.5.1 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate polynomial-ring 0.5.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate polynomial-ring 0.5.1
[INFO] tweaked toml for crates.io crate polynomial-ring 0.5.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate polynomial-ring 0.5.1 on toolchain 42f4793e5a514858221b07ac379029d90353913e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+42f4793e5a514858221b07ac379029d90353913e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate polynomial-ring 0.5.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+42f4793e5a514858221b07ac379029d90353913e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded take_mut v0.2.2
[INFO] [stderr]   Downloaded az v1.1.0
[INFO] [stderr]   Downloaded derive-syn-parse v0.1.5
[INFO] [stderr]   Downloaded rustversion v1.0.0
[INFO] [stderr]   Downloaded strum_macros v0.24.0
[INFO] [stderr]   Downloaded winapi-i686-pc-windows-gnu v0.3.0
[INFO] [stderr]   Downloaded auto-impl-ops v0.2.1
[INFO] [stderr]   Downloaded winapi-x86_64-pc-windows-gnu v0.3.0
[INFO] [stderr]   Downloaded ring-algorithm v0.8.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.83
[INFO] [stderr]   Downloaded num-bigint v0.4.5
[INFO] [stderr]   Downloaded syn v2.0.81
[INFO] [stderr]   Downloaded rug v1.18.0
[INFO] [stderr]   Downloaded libc v0.2.44
[INFO] [stderr]   Downloaded winapi v0.3.0
[INFO] [stderr]   Downloaded gmp-mpfr-sys v1.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+42f4793e5a514858221b07ac379029d90353913e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ba7fc4de2cd9dfba97ca058343e663bed9805fb0cb942da91e28b5c525be2ae
[INFO] running `Command { std: "docker" "start" "-a" "2ba7fc4de2cd9dfba97ca058343e663bed9805fb0cb942da91e28b5c525be2ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ba7fc4de2cd9dfba97ca058343e663bed9805fb0cb942da91e28b5c525be2ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ba7fc4de2cd9dfba97ca058343e663bed9805fb0cb942da91e28b5c525be2ae", kill_on_drop: false }`
[INFO] [stdout] 2ba7fc4de2cd9dfba97ca058343e663bed9805fb0cb942da91e28b5c525be2ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+42f4793e5a514858221b07ac379029d90353913e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b0f22f4924eeba6a26e80a1e18a0476856a9410ebb59bd66c1a27772bdc62a06
[INFO] running `Command { std: "docker" "start" "-a" "b0f22f4924eeba6a26e80a1e18a0476856a9410ebb59bd66c1a27772bdc62a06", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling proc-macro2 v1.0.83
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.4.0
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling rug v1.18.0
[INFO] [stderr]     Checking az v1.1.0
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking ring-algorithm v0.8.0
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num-bigint v0.4.5
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]    Compiling rustversion v1.0.0
[INFO] [stderr]    Compiling derive-syn-parse v0.1.5
[INFO] [stderr]    Compiling strum_macros v0.24.0
[INFO] [stderr]    Compiling strum v0.24.1
[INFO] [stderr]    Compiling auto-impl-ops v0.2.1
[INFO] [stderr]     Checking polynomial-ring v0.5.1 (/opt/rustwide/workdir)
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "b0f22f4924eeba6a26e80a1e18a0476856a9410ebb59bd66c1a27772bdc62a06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0f22f4924eeba6a26e80a1e18a0476856a9410ebb59bd66c1a27772bdc62a06", kill_on_drop: false }`
[INFO] [stdout] b0f22f4924eeba6a26e80a1e18a0476856a9410ebb59bd66c1a27772bdc62a06