[INFO] cloning repository https://github.com/Squadz/rust_learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Squadz/rust_learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSquadz%2Frust_learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSquadz%2Frust_learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 56e1a4a6e96f11f6b09c8424489c2a3f96bb4128
[INFO] building Squadz/rust_learning against master#461e8078010433ff7de2db2aaae8a3cfb0847215 for pr-94962
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSquadz%2Frust_learning" "/workspace/builds/worker-73/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-73/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Squadz/rust_learning on toolchain 461e8078010433ff7de2db2aaae8a3cfb0847215
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Squadz/rust_learning
[INFO] finished tweaking git repo https://github.com/Squadz/rust_learning
[INFO] tweaked toml for git repo https://github.com/Squadz/rust_learning written to /workspace/builds/worker-73/source/Cargo.toml
[INFO] crate git repo https://github.com/Squadz/rust_learning already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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@sha256:1ede1414886370302e694df474b9877c02906499f04c196936ce0973d30c5eaa" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3747acebbd2baf98cb5fcf73c42fc8640b5110a87e890137785f3c13b7870e64
[INFO] running `Command { std: "docker" "start" "-a" "3747acebbd2baf98cb5fcf73c42fc8640b5110a87e890137785f3c13b7870e64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3747acebbd2baf98cb5fcf73c42fc8640b5110a87e890137785f3c13b7870e64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3747acebbd2baf98cb5fcf73c42fc8640b5110a87e890137785f3c13b7870e64", kill_on_drop: false }`
[INFO] [stdout] 3747acebbd2baf98cb5fcf73c42fc8640b5110a87e890137785f3c13b7870e64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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@sha256:1ede1414886370302e694df474b9877c02906499f04c196936ce0973d30c5eaa" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7199fbfd797053130a3d5a9afffad9c954635019d1237f186def9a529b1c9018
[INFO] running `Command { std: "docker" "start" "-a" "7199fbfd797053130a3d5a9afffad9c954635019d1237f186def9a529b1c9018", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling variables v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.99s
[INFO] running `Command { std: "docker" "inspect" "7199fbfd797053130a3d5a9afffad9c954635019d1237f186def9a529b1c9018", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7199fbfd797053130a3d5a9afffad9c954635019d1237f186def9a529b1c9018", kill_on_drop: false }`
[INFO] [stdout] 7199fbfd797053130a3d5a9afffad9c954635019d1237f186def9a529b1c9018
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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@sha256:1ede1414886370302e694df474b9877c02906499f04c196936ce0973d30c5eaa" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6e37c3623dd5098cf442b804dc9cf4993d6f8c7abc6f6bc9f93ddbb2eb1b8cf
[INFO] running `Command { std: "docker" "start" "-a" "f6e37c3623dd5098cf442b804dc9cf4993d6f8c7abc6f6bc9f93ddbb2eb1b8cf", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling variables v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 16.47s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/variables-70c2e514e0f142d6)
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "f6e37c3623dd5098cf442b804dc9cf4993d6f8c7abc6f6bc9f93ddbb2eb1b8cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6e37c3623dd5098cf442b804dc9cf4993d6f8c7abc6f6bc9f93ddbb2eb1b8cf", kill_on_drop: false }`
[INFO] [stdout] f6e37c3623dd5098cf442b804dc9cf4993d6f8c7abc6f6bc9f93ddbb2eb1b8cf