[INFO] fetching crate package_a 0.1.2...
[INFO] checking package_a-0.1.2 against try#9228062c11d321a3ea08123f57e47533a3c88b00 for pr-154781
[INFO] extracting crate package_a 0.1.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate package_a 0.1.2
[INFO] finished tweaking crates.io crate package_a 0.1.2
[INFO] tweaked toml for crates.io crate package_a 0.1.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate package_a 0.1.2 on toolchain 9228062c11d321a3ea08123f57e47533a3c88b00
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9228062c11d321a3ea08123f57e47533a3c88b00" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate package_a 0.1.2 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" "+9228062c11d321a3ea08123f57e47533a3c88b00" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+9228062c11d321a3ea08123f57e47533a3c88b00" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9bc5f6557da2072c2352a34b46055d28e2d4b0aa96b795a5502d2b24fc20888f
[INFO] running `Command { std: "docker" "start" "-a" "9bc5f6557da2072c2352a34b46055d28e2d4b0aa96b795a5502d2b24fc20888f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9bc5f6557da2072c2352a34b46055d28e2d4b0aa96b795a5502d2b24fc20888f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bc5f6557da2072c2352a34b46055d28e2d4b0aa96b795a5502d2b24fc20888f", kill_on_drop: false }`
[INFO] [stdout] 9bc5f6557da2072c2352a34b46055d28e2d4b0aa96b795a5502d2b24fc20888f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=forbid" "-e" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+9228062c11d321a3ea08123f57e47533a3c88b00" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 00425a9f64deef8fb655a3f0f12e5eb3681d22cef376472c34042b4be14f4e2d
[INFO] running `Command { std: "docker" "start" "-a" "00425a9f64deef8fb655a3f0f12e5eb3681d22cef376472c34042b4be14f4e2d", kill_on_drop: false }`
[INFO] [stderr]     Checking package_a v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "00425a9f64deef8fb655a3f0f12e5eb3681d22cef376472c34042b4be14f4e2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00425a9f64deef8fb655a3f0f12e5eb3681d22cef376472c34042b4be14f4e2d", kill_on_drop: false }`
[INFO] [stdout] 00425a9f64deef8fb655a3f0f12e5eb3681d22cef376472c34042b4be14f4e2d