[INFO] fetching crate palette 0.6.0...
[INFO] testing palette-0.6.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate palette 0.6.0 into /workspace/builds/worker-88/source
[INFO] validating manifest of crates.io crate palette 0.6.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate palette 0.6.0
[INFO] finished tweaking crates.io crate palette 0.6.0
[INFO] tweaked toml for crates.io crate palette 0.6.0 written to /workspace/builds/worker-88/source/Cargo.toml
[INFO] crate crates.io crate palette 0.6.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0fea478af56cf64a45fadc9d6f8f1f56bf29e3fc4b6ea76523d809c9c1e72506
[INFO] running `Command { std: "docker" "start" "-a" "0fea478af56cf64a45fadc9d6f8f1f56bf29e3fc4b6ea76523d809c9c1e72506", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fea478af56cf64a45fadc9d6f8f1f56bf29e3fc4b6ea76523d809c9c1e72506", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fea478af56cf64a45fadc9d6f8f1f56bf29e3fc4b6ea76523d809c9c1e72506", kill_on_drop: false }`
[INFO] [stdout] 0fea478af56cf64a45fadc9d6f8f1f56bf29e3fc4b6ea76523d809c9c1e72506
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70b44225a5a1130aab737613081c2f4e6548233801d9a4abc47104e09459b12d
[INFO] running `Command { std: "docker" "start" "-a" "70b44225a5a1130aab737613081c2f4e6548233801d9a4abc47104e09459b12d", kill_on_drop: false }`
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "70b44225a5a1130aab737613081c2f4e6548233801d9a4abc47104e09459b12d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70b44225a5a1130aab737613081c2f4e6548233801d9a4abc47104e09459b12d", kill_on_drop: false }`
[INFO] [stdout] 70b44225a5a1130aab737613081c2f4e6548233801d9a4abc47104e09459b12d