[INFO] fetching crate cuco 0.1.3...
[INFO] checking cuco-0.1.3 against master#c5fbcd35a8217a17f6b63a22217ace06cf8f5f02 for pr-86194
[INFO] extracting crate cuco 0.1.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate cuco 0.1.3 on toolchain c5fbcd35a8217a17f6b63a22217ace06cf8f5f02
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cuco 0.1.3
[INFO] finished tweaking crates.io crate cuco 0.1.3
[INFO] tweaked toml for crates.io crate cuco 0.1.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate cuco 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 663deedbbc83804954ae84ab9cc0be07c60579c722febfbfa99666aba7043f0a
[INFO] running `Command { std: "docker" "start" "-a" "663deedbbc83804954ae84ab9cc0be07c60579c722febfbfa99666aba7043f0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "663deedbbc83804954ae84ab9cc0be07c60579c722febfbfa99666aba7043f0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "663deedbbc83804954ae84ab9cc0be07c60579c722febfbfa99666aba7043f0a", kill_on_drop: false }`
[INFO] [stdout] 663deedbbc83804954ae84ab9cc0be07c60579c722febfbfa99666aba7043f0a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8a9dc4f804c08d895a19f5c4621909993f03fa4db88210050820f5c3dc5c0f4
[INFO] running `Command { std: "docker" "start" "-a" "f8a9dc4f804c08d895a19f5c4621909993f03fa4db88210050820f5c3dc5c0f4", kill_on_drop: false }`
[INFO] [stderr]     Checking cuco v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "f8a9dc4f804c08d895a19f5c4621909993f03fa4db88210050820f5c3dc5c0f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8a9dc4f804c08d895a19f5c4621909993f03fa4db88210050820f5c3dc5c0f4", kill_on_drop: false }`
[INFO] [stdout] f8a9dc4f804c08d895a19f5c4621909993f03fa4db88210050820f5c3dc5c0f4