[INFO] fetching crate abackus 0.2.2...
[INFO] checking abackus-0.2.2 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate abackus 0.2.2 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate abackus 0.2.2 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 abackus 0.2.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate abackus 0.2.2
[INFO] tweaked toml for crates.io crate abackus 0.2.2 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate crates.io crate abackus 0.2.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 2d9ec5509df2cd941824e144429ed1d0ecf8aa2ffde0f1cb35da5df47d660e94
[INFO] running `Command { std: "docker" "start" "-a" "2d9ec5509df2cd941824e144429ed1d0ecf8aa2ffde0f1cb35da5df47d660e94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d9ec5509df2cd941824e144429ed1d0ecf8aa2ffde0f1cb35da5df47d660e94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d9ec5509df2cd941824e144429ed1d0ecf8aa2ffde0f1cb35da5df47d660e94", kill_on_drop: false }`
[INFO] [stdout] 2d9ec5509df2cd941824e144429ed1d0ecf8aa2ffde0f1cb35da5df47d660e94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 7a5434caf4dbf49c7f9ff28ce5235197ebeea589b10199483c65c572800a236b
[INFO] running `Command { std: "docker" "start" "-a" "7a5434caf4dbf49c7f9ff28ce5235197ebeea589b10199483c65c572800a236b", kill_on_drop: false }`
[INFO] [stderr]     Checking lexers v0.1.2
[INFO] [stderr]     Checking earlgrey v0.3.0
[INFO] [stderr]     Checking abackus v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "7a5434caf4dbf49c7f9ff28ce5235197ebeea589b10199483c65c572800a236b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a5434caf4dbf49c7f9ff28ce5235197ebeea589b10199483c65c572800a236b", kill_on_drop: false }`
[INFO] [stdout] 7a5434caf4dbf49c7f9ff28ce5235197ebeea589b10199483c65c572800a236b