[INFO] fetching crate b2sum-rust 0.3.0...
[INFO] checking b2sum-rust-0.3.0 against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] extracting crate b2sum-rust 0.3.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate b2sum-rust 0.3.0 on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate b2sum-rust 0.3.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate b2sum-rust 0.3.0
[INFO] tweaked toml for crates.io crate b2sum-rust 0.3.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate b2sum-rust 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e9b142aa606e2a1599167229f47ec7f130585b456ec124618f5663524571eab
[INFO] running `Command { std: "docker" "start" "-a" "7e9b142aa606e2a1599167229f47ec7f130585b456ec124618f5663524571eab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e9b142aa606e2a1599167229f47ec7f130585b456ec124618f5663524571eab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e9b142aa606e2a1599167229f47ec7f130585b456ec124618f5663524571eab", kill_on_drop: false }`
[INFO] [stdout] 7e9b142aa606e2a1599167229f47ec7f130585b456ec124618f5663524571eab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30e289af9eef36af157783dec84dbc54ece583fdb87ed3ec95e51c4844862698
[INFO] running `Command { std: "docker" "start" "-a" "30e289af9eef36af157783dec84dbc54ece583fdb87ed3ec95e51c4844862698", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.87
[INFO] [stderr]     Checking blake2-rfc v0.2.18
[INFO] [stderr]     Checking filebuffer v0.4.0
[INFO] [stderr]     Checking b2sum-rust v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.39s
[INFO] running `Command { std: "docker" "inspect" "30e289af9eef36af157783dec84dbc54ece583fdb87ed3ec95e51c4844862698", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30e289af9eef36af157783dec84dbc54ece583fdb87ed3ec95e51c4844862698", kill_on_drop: false }`
[INFO] [stdout] 30e289af9eef36af157783dec84dbc54ece583fdb87ed3ec95e51c4844862698