[INFO] fetching crate atsamd21g18a 0.7.1...
[INFO] checking atsamd21g18a-0.7.1 against 1.55.0 for beta-1.56-3
[INFO] extracting crate atsamd21g18a 0.7.1 into /workspace/builds/worker-53/source
[INFO] validating manifest of crates.io crate atsamd21g18a 0.7.1 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 atsamd21g18a 0.7.1
[INFO] finished tweaking crates.io crate atsamd21g18a 0.7.1
[INFO] tweaked toml for crates.io crate atsamd21g18a 0.7.1 written to /workspace/builds/worker-53/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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] 06866d263e5f85d89b51a6196de3e28b5ba2245b33a6ffdeb17c8e8ed2d78b3d
[INFO] running `Command { std: "docker" "start" "-a" "06866d263e5f85d89b51a6196de3e28b5ba2245b33a6ffdeb17c8e8ed2d78b3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06866d263e5f85d89b51a6196de3e28b5ba2245b33a6ffdeb17c8e8ed2d78b3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06866d263e5f85d89b51a6196de3e28b5ba2245b33a6ffdeb17c8e8ed2d78b3d", kill_on_drop: false }`
[INFO] [stdout] 06866d263e5f85d89b51a6196de3e28b5ba2245b33a6ffdeb17c8e8ed2d78b3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6391451c3136e4ab31a18de0ab40d8627a63aad8e867a2cffc93a1a65e96ab5a
[INFO] running `Command { std: "docker" "start" "-a" "6391451c3136e4ab31a18de0ab40d8627a63aad8e867a2cffc93a1a65e96ab5a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling atsamd21g18a v0.7.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.75s
[INFO] running `Command { std: "docker" "inspect" "6391451c3136e4ab31a18de0ab40d8627a63aad8e867a2cffc93a1a65e96ab5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6391451c3136e4ab31a18de0ab40d8627a63aad8e867a2cffc93a1a65e96ab5a", kill_on_drop: false }`
[INFO] [stdout] 6391451c3136e4ab31a18de0ab40d8627a63aad8e867a2cffc93a1a65e96ab5a
