[INFO] fetching crate kctf-pow 1.2.0...
[INFO] building kctf-pow-1.2.0 against master#f3126500f25114ba4e0ac3e76694dd45a22de56d for pr-107620-1
[INFO] extracting crate kctf-pow 1.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate kctf-pow 1.2.0 on toolchain f3126500f25114ba4e0ac3e76694dd45a22de56d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f3126500f25114ba4e0ac3e76694dd45a22de56d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kctf-pow 1.2.0
[INFO] finished tweaking crates.io crate kctf-pow 1.2.0
[INFO] tweaked toml for crates.io crate kctf-pow 1.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate kctf-pow 1.2.0 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" "+f3126500f25114ba4e0ac3e76694dd45a22de56d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded az v1.1.1
[INFO] [stderr]   Downloaded rug v1.12.0
[INFO] [stderr]   Downloaded gmp-mpfr-sys v1.4.5
[INFO] [stderr]   Downloaded libc v0.2.97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:3d532c2baa59a8a48e45c3be7eb049f77ac5a58a7a6514a58a8e878df1c3d03d" "/opt/rustwide/cargo-home/bin/cargo" "+f3126500f25114ba4e0ac3e76694dd45a22de56d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8175c8c7732729bb16d957cebd992cb4d03166c7377363381ca634aa8bdd3d69
[INFO] running `Command { std: "docker" "start" "-a" "8175c8c7732729bb16d957cebd992cb4d03166c7377363381ca634aa8bdd3d69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8175c8c7732729bb16d957cebd992cb4d03166c7377363381ca634aa8bdd3d69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8175c8c7732729bb16d957cebd992cb4d03166c7377363381ca634aa8bdd3d69", kill_on_drop: false }`
[INFO] [stdout] 8175c8c7732729bb16d957cebd992cb4d03166c7377363381ca634aa8bdd3d69
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:3d532c2baa59a8a48e45c3be7eb049f77ac5a58a7a6514a58a8e878df1c3d03d" "/opt/rustwide/cargo-home/bin/cargo" "+f3126500f25114ba4e0ac3e76694dd45a22de56d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 645ac0f8b6e277ab71c1e2d97cf8f0a1208c677b480e8af50e8a1a66132433bc
[INFO] running `Command { std: "docker" "start" "-a" "645ac0f8b6e277ab71c1e2d97cf8f0a1208c677b480e8af50e8a1a66132433bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.4.5
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling az v1.1.1
[INFO] [stderr]    Compiling rug v1.12.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "645ac0f8b6e277ab71c1e2d97cf8f0a1208c677b480e8af50e8a1a66132433bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "645ac0f8b6e277ab71c1e2d97cf8f0a1208c677b480e8af50e8a1a66132433bc", kill_on_drop: false }`
[INFO] [stdout] 645ac0f8b6e277ab71c1e2d97cf8f0a1208c677b480e8af50e8a1a66132433bc