[INFO] cloning repository https://github.com/maidamai0/learn_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/maidamai0/learn_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaidamai0%2Flearn_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaidamai0%2Flearn_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e41de2aa96f1772f96ca27c7c7073d394f26de51
[INFO] testing maidamai0/learn_rust against master#0e21a27075a8c508f00d1a4430497f17ce93d5c9 for pr-98839
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaidamai0%2Flearn_rust" "/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/maidamai0/learn_rust on toolchain 0e21a27075a8c508f00d1a4430497f17ce93d5c9
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0e21a27075a8c508f00d1a4430497f17ce93d5c9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/maidamai0/learn_rust
[INFO] finished tweaking git repo https://github.com/maidamai0/learn_rust
[INFO] tweaked toml for git repo https://github.com/maidamai0/learn_rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/maidamai0/learn_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0e21a27075a8c508f00d1a4430497f17ce93d5c9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+0e21a27075a8c508f00d1a4430497f17ce93d5c9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 163b4d2f04a641d288d4166527fe41ac1bb5a74219481b9608e9d71849ab6a84
[INFO] running `Command { std: "docker" "start" "-a" "163b4d2f04a641d288d4166527fe41ac1bb5a74219481b9608e9d71849ab6a84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "163b4d2f04a641d288d4166527fe41ac1bb5a74219481b9608e9d71849ab6a84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "163b4d2f04a641d288d4166527fe41ac1bb5a74219481b9608e9d71849ab6a84", kill_on_drop: false }`
[INFO] [stdout] 163b4d2f04a641d288d4166527fe41ac1bb5a74219481b9608e9d71849ab6a84
[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" "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@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+0e21a27075a8c508f00d1a4430497f17ce93d5c9" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e94315b30d28202cc0c14c854a7b8e0190505efd0cb1caf4719bcabec7d6d39d
[INFO] running `Command { std: "docker" "start" "-a" "e94315b30d28202cc0c14c854a7b8e0190505efd0cb1caf4719bcabec7d6d39d", kill_on_drop: false }`
[INFO] [stderr]    Compiling learn_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "e94315b30d28202cc0c14c854a7b8e0190505efd0cb1caf4719bcabec7d6d39d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e94315b30d28202cc0c14c854a7b8e0190505efd0cb1caf4719bcabec7d6d39d", kill_on_drop: false }`
[INFO] [stdout] e94315b30d28202cc0c14c854a7b8e0190505efd0cb1caf4719bcabec7d6d39d
[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" "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@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+0e21a27075a8c508f00d1a4430497f17ce93d5c9" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6623a899364b6a47d559cb6c3a91415b3e4cfd892d3f6c2d0096c8fbb31a9066
[INFO] running `Command { std: "docker" "start" "-a" "6623a899364b6a47d559cb6c3a91415b3e4cfd892d3f6c2d0096c8fbb31a9066", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling learn_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `Command { std: "docker" "inspect" "6623a899364b6a47d559cb6c3a91415b3e4cfd892d3f6c2d0096c8fbb31a9066", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6623a899364b6a47d559cb6c3a91415b3e4cfd892d3f6c2d0096c8fbb31a9066", kill_on_drop: false }`
[INFO] [stdout] 6623a899364b6a47d559cb6c3a91415b3e4cfd892d3f6c2d0096c8fbb31a9066
[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" "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@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+0e21a27075a8c508f00d1a4430497f17ce93d5c9" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 921d30c75d8ca5ead4fb0085168c47004cca97e1c6e0de78e34d0cbdbad7ae0d
[INFO] running `Command { std: "docker" "start" "-a" "921d30c75d8ca5ead4fb0085168c47004cca97e1c6e0de78e34d0cbdbad7ae0d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "921d30c75d8ca5ead4fb0085168c47004cca97e1c6e0de78e34d0cbdbad7ae0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "921d30c75d8ca5ead4fb0085168c47004cca97e1c6e0de78e34d0cbdbad7ae0d", kill_on_drop: false }`
[INFO] [stdout] 921d30c75d8ca5ead4fb0085168c47004cca97e1c6e0de78e34d0cbdbad7ae0d