[INFO] fetching crate quiz 0.0.3...
[INFO] checking quiz-0.0.3 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate quiz 0.0.3 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate quiz 0.0.3 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 quiz 0.0.3
[INFO] finished tweaking crates.io crate quiz 0.0.3
[INFO] tweaked toml for crates.io crate quiz 0.0.3 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate quiz 0.0.3 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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] e0a88f07e6065cc032c4a4c381a6b26f479260b8cd6385e81e8604674e8bb84d
[INFO] running `Command { std: "docker" "start" "-a" "e0a88f07e6065cc032c4a4c381a6b26f479260b8cd6385e81e8604674e8bb84d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0a88f07e6065cc032c4a4c381a6b26f479260b8cd6385e81e8604674e8bb84d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0a88f07e6065cc032c4a4c381a6b26f479260b8cd6385e81e8604674e8bb84d", kill_on_drop: false }`
[INFO] [stdout] e0a88f07e6065cc032c4a4c381a6b26f479260b8cd6385e81e8604674e8bb84d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 7b7ed23866a7d92c9a63298861036873e7c2a602d9e6eb818cea3ccbdb44ee5e
[INFO] running `Command { std: "docker" "start" "-a" "7b7ed23866a7d92c9a63298861036873e7c2a602d9e6eb818cea3ccbdb44ee5e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking figures-rs v0.0.1
[INFO] [stderr]     Checking termion v1.5.5
[INFO] [stderr]     Checking quiz v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.45s
[INFO] running `Command { std: "docker" "inspect" "7b7ed23866a7d92c9a63298861036873e7c2a602d9e6eb818cea3ccbdb44ee5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b7ed23866a7d92c9a63298861036873e7c2a602d9e6eb818cea3ccbdb44ee5e", kill_on_drop: false }`
[INFO] [stdout] 7b7ed23866a7d92c9a63298861036873e7c2a602d9e6eb818cea3ccbdb44ee5e