[INFO] fetching crate backoff 0.4.0...
[INFO] checking backoff-0.4.0 against try#da25749bf5e6ba5ed862ff361c19afff2a986b2d for pr-132712
[INFO] extracting crate backoff 0.4.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate backoff 0.4.0 on toolchain da25749bf5e6ba5ed862ff361c19afff2a986b2d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+da25749bf5e6ba5ed862ff361c19afff2a986b2d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate backoff 0.4.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate backoff 0.4.0
[INFO] tweaked toml for crates.io crate backoff 0.4.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate backoff 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+da25749bf5e6ba5ed862ff361c19afff2a986b2d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+da25749bf5e6ba5ed862ff361c19afff2a986b2d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a42b6d02765b6b8311435b9c6d2296c98cdf90b3fa366ec9c52f14b11459a00b
[INFO] running `Command { std: "docker" "start" "-a" "a42b6d02765b6b8311435b9c6d2296c98cdf90b3fa366ec9c52f14b11459a00b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a42b6d02765b6b8311435b9c6d2296c98cdf90b3fa366ec9c52f14b11459a00b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a42b6d02765b6b8311435b9c6d2296c98cdf90b3fa366ec9c52f14b11459a00b", kill_on_drop: false }`
[INFO] [stdout] a42b6d02765b6b8311435b9c6d2296c98cdf90b3fa366ec9c52f14b11459a00b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+da25749bf5e6ba5ed862ff361c19afff2a986b2d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8154d2db5d4ac14d7370b8e6ceecb1061dc3afb9b99cda54cd4b5307d93cff5d
[INFO] running `Command { std: "docker" "start" "-a" "8154d2db5d4ac14d7370b8e6ceecb1061dc3afb9b99cda54cd4b5307d93cff5d", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] skipping non-2021 edition `2018`
[INFO] running `Command { std: "docker" "inspect" "8154d2db5d4ac14d7370b8e6ceecb1061dc3afb9b99cda54cd4b5307d93cff5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8154d2db5d4ac14d7370b8e6ceecb1061dc3afb9b99cda54cd4b5307d93cff5d", kill_on_drop: false }`
[INFO] [stdout] 8154d2db5d4ac14d7370b8e6ceecb1061dc3afb9b99cda54cd4b5307d93cff5d