[INFO] fetching crate io-prompt-prototype 1.0.0...
[INFO] checking io-prompt-prototype-1.0.0 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate io-prompt-prototype 1.0.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate io-prompt-prototype 1.0.0 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate io-prompt-prototype 1.0.0
[INFO] finished tweaking crates.io crate io-prompt-prototype 1.0.0
[INFO] tweaked toml for crates.io crate io-prompt-prototype 1.0.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate io-prompt-prototype 1.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 38f4d60bb376c4f1215ac1e80430334b6b90e69902560aad1ca5a9f3bcca659b
[INFO] running `Command { std: "docker" "start" "-a" "38f4d60bb376c4f1215ac1e80430334b6b90e69902560aad1ca5a9f3bcca659b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38f4d60bb376c4f1215ac1e80430334b6b90e69902560aad1ca5a9f3bcca659b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38f4d60bb376c4f1215ac1e80430334b6b90e69902560aad1ca5a9f3bcca659b", kill_on_drop: false }`
[INFO] [stdout] 38f4d60bb376c4f1215ac1e80430334b6b90e69902560aad1ca5a9f3bcca659b
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7de5bed58d3d20f11bb0cb27d8e181d6a71ed2686430be57ad2406b6c77199ee
[INFO] running `Command { std: "docker" "start" "-a" "7de5bed58d3d20f11bb0cb27d8e181d6a71ed2686430be57ad2406b6c77199ee", kill_on_drop: false }`
[INFO] [stderr]     Checking io-prompt-prototype v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "7de5bed58d3d20f11bb0cb27d8e181d6a71ed2686430be57ad2406b6c77199ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7de5bed58d3d20f11bb0cb27d8e181d6a71ed2686430be57ad2406b6c77199ee", kill_on_drop: false }`
[INFO] [stdout] 7de5bed58d3d20f11bb0cb27d8e181d6a71ed2686430be57ad2406b6c77199ee