[INFO] cloning repository https://github.com/Alexnortung/pi-digits
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Alexnortung/pi-digits" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexnortung%2Fpi-digits", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexnortung%2Fpi-digits'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 97e15ec771fed2b5b9ec92651de784c901f7f4bd
[INFO] checking Alexnortung/pi-digits against master#4bd30785eb6e55f317b41b7c278f438807eeb174 for pr-102737
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexnortung%2Fpi-digits" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Alexnortung/pi-digits on toolchain 4bd30785eb6e55f317b41b7c278f438807eeb174
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4bd30785eb6e55f317b41b7c278f438807eeb174" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Alexnortung/pi-digits
[INFO] finished tweaking git repo https://github.com/Alexnortung/pi-digits
[INFO] tweaked toml for git repo https://github.com/Alexnortung/pi-digits written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Alexnortung/pi-digits already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4bd30785eb6e55f317b41b7c278f438807eeb174" "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 rug v1.7.0
[INFO] [stderr]   Downloaded az v0.3.0
[INFO] [stderr]   Downloaded gmp-mpfr-sys v1.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:3d1cd00eb6e6ea2a7969240779edeaeff35b24be85036c63b883ba933028a15f" "/opt/rustwide/cargo-home/bin/cargo" "+4bd30785eb6e55f317b41b7c278f438807eeb174" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3d555eb1e3eb17a9f4dbbff74092eae795912e0f920e68dd43f5a3184c95eb1
[INFO] running `Command { std: "docker" "start" "-a" "a3d555eb1e3eb17a9f4dbbff74092eae795912e0f920e68dd43f5a3184c95eb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3d555eb1e3eb17a9f4dbbff74092eae795912e0f920e68dd43f5a3184c95eb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3d555eb1e3eb17a9f4dbbff74092eae795912e0f920e68dd43f5a3184c95eb1", kill_on_drop: false }`
[INFO] [stdout] a3d555eb1e3eb17a9f4dbbff74092eae795912e0f920e68dd43f5a3184c95eb1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:3d1cd00eb6e6ea2a7969240779edeaeff35b24be85036c63b883ba933028a15f" "/opt/rustwide/cargo-home/bin/cargo" "+4bd30785eb6e55f317b41b7c278f438807eeb174" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9709a052688930fae524fc03ff63f91359d8e1cf5cb24cc5038073fb6c8f1bb
[INFO] running `Command { std: "docker" "start" "-a" "a9709a052688930fae524fc03ff63f91359d8e1cf5cb24cc5038073fb6c8f1bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling rug v1.7.0
[INFO] [stderr]     Checking az v0.3.0
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.2.1
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "a9709a052688930fae524fc03ff63f91359d8e1cf5cb24cc5038073fb6c8f1bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9709a052688930fae524fc03ff63f91359d8e1cf5cb24cc5038073fb6c8f1bb", kill_on_drop: false }`
[INFO] [stdout] a9709a052688930fae524fc03ff63f91359d8e1cf5cb24cc5038073fb6c8f1bb