[INFO] fetching crate once 0.3.4...
[INFO] checking once-0.3.4 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate once 0.3.4 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate once 0.3.4 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate once 0.3.4
[INFO] finished tweaking crates.io crate once 0.3.4
[INFO] tweaked toml for crates.io crate once 0.3.4 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c2240cedb39e9558f155157f20aa4e499170d1fa6f2a2c268dd814f61615303
[INFO] running `Command { std: "docker" "start" "-a" "6c2240cedb39e9558f155157f20aa4e499170d1fa6f2a2c268dd814f61615303", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c2240cedb39e9558f155157f20aa4e499170d1fa6f2a2c268dd814f61615303", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c2240cedb39e9558f155157f20aa4e499170d1fa6f2a2c268dd814f61615303", kill_on_drop: false }`
[INFO] [stdout] 6c2240cedb39e9558f155157f20aa4e499170d1fa6f2a2c268dd814f61615303
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d11b03818bb7f75b370ea8b22d1c1e00ee7c3f0fe02f60e4d2edbf906c916f39
[INFO] running `Command { std: "docker" "start" "-a" "d11b03818bb7f75b370ea8b22d1c1e00ee7c3f0fe02f60e4d2edbf906c916f39", kill_on_drop: false }`
[INFO] [stderr]     Checking once v0.3.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "d11b03818bb7f75b370ea8b22d1c1e00ee7c3f0fe02f60e4d2edbf906c916f39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d11b03818bb7f75b370ea8b22d1c1e00ee7c3f0fe02f60e4d2edbf906c916f39", kill_on_drop: false }`
[INFO] [stdout] d11b03818bb7f75b370ea8b22d1c1e00ee7c3f0fe02f60e4d2edbf906c916f39