[INFO] fetching crate plain_enum 0.9.9...
[INFO] checking plain_enum-0.9.9 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate plain_enum 0.9.9 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate plain_enum 0.9.9 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate plain_enum 0.9.9
[INFO] finished tweaking crates.io crate plain_enum 0.9.9
[INFO] tweaked toml for crates.io crate plain_enum 0.9.9 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ecabfa0e1688ae7f3bc079302c13ad747bac731a7f04581ed905fd117979591
[INFO] running `Command { std: "docker" "start" "-a" "2ecabfa0e1688ae7f3bc079302c13ad747bac731a7f04581ed905fd117979591", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ecabfa0e1688ae7f3bc079302c13ad747bac731a7f04581ed905fd117979591", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ecabfa0e1688ae7f3bc079302c13ad747bac731a7f04581ed905fd117979591", kill_on_drop: false }`
[INFO] [stdout] 2ecabfa0e1688ae7f3bc079302c13ad747bac731a7f04581ed905fd117979591
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 521c563d9f923f01687906588b008175cfe2efa6a73b20b292670a48d989b235
[INFO] running `Command { std: "docker" "start" "-a" "521c563d9f923f01687906588b008175cfe2efa6a73b20b292670a48d989b235", kill_on_drop: false }`
[INFO] [stderr]     Checking plain_enum v0.9.9 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.26s
[INFO] running `Command { std: "docker" "inspect" "521c563d9f923f01687906588b008175cfe2efa6a73b20b292670a48d989b235", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "521c563d9f923f01687906588b008175cfe2efa6a73b20b292670a48d989b235", kill_on_drop: false }`
[INFO] [stdout] 521c563d9f923f01687906588b008175cfe2efa6a73b20b292670a48d989b235