[INFO] cloning repository https://github.com/JuanPotato/my_first_async_calculator.rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JuanPotato/my_first_async_calculator.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJuanPotato%2Fmy_first_async_calculator.rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJuanPotato%2Fmy_first_async_calculator.rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7dfb764163c920fb9d7439b33d552178e5596da4
[INFO] checking JuanPotato/my_first_async_calculator.rs against master#4c5f6e6277b89e47d73a192078697f7a5f3dc0ac for pr-97086
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJuanPotato%2Fmy_first_async_calculator.rs" "/workspace/builds/worker-112/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-112/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JuanPotato/my_first_async_calculator.rs on toolchain 4c5f6e6277b89e47d73a192078697f7a5f3dc0ac
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4c5f6e6277b89e47d73a192078697f7a5f3dc0ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JuanPotato/my_first_async_calculator.rs
[INFO] finished tweaking git repo https://github.com/JuanPotato/my_first_async_calculator.rs
[INFO] tweaked toml for git repo https://github.com/JuanPotato/my_first_async_calculator.rs written to /workspace/builds/worker-112/source/Cargo.toml
[INFO] crate git repo https://github.com/JuanPotato/my_first_async_calculator.rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4c5f6e6277b89e47d73a192078697f7a5f3dc0ac" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-sync v0.2.0-alpha.6
[INFO] [stderr]   Downloaded tokio-executor v0.2.0-alpha.6
[INFO] [stderr]   Downloaded num_cpus v1.10.0
[INFO] [stderr]   Downloaded futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]   Downloaded syn v1.0.8
[INFO] [stderr]   Downloaded pin-project v0.4.6
[INFO] [stderr]   Downloaded tokio-macros v0.2.0-alpha.6
[INFO] [stderr]   Downloaded pin-project-internal v0.4.6
[INFO] [stderr]   Downloaded mio v0.6.16
[INFO] [stderr]   Downloaded futures-sink-preview v0.3.0-alpha.19
[INFO] [stderr]   Downloaded crossbeam-epoch v0.8.0
[INFO] [stderr]   Downloaded tokio-codec v0.2.0-alpha.6
[INFO] [stderr]   Downloaded tokio-fs v0.2.0-alpha.6
[INFO] [stderr]   Downloaded tracing-attributes v0.1.5
[INFO] [stderr]   Downloaded tracing v0.1.10
[INFO] [stderr]   Downloaded futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]   Downloaded crossbeam-utils v0.7.0
[INFO] [stderr]   Downloaded crossbeam-deque v0.7.2
[INFO] [stderr]   Downloaded futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]   Downloaded tokio-timer v0.3.0-alpha.6
[INFO] [stderr]   Downloaded tracing-core v0.1.7
[INFO] [stderr]   Downloaded tokio v0.2.0-alpha.6
[INFO] [stderr]   Downloaded memoffset v0.5.3
[INFO] [stderr]   Downloaded tokio-io v0.2.0-alpha.6
[INFO] [stderr]   Downloaded tokio-net v0.2.0-alpha.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+4c5f6e6277b89e47d73a192078697f7a5f3dc0ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9449de22107cf8999d2584ca0072e58a6f0fd1ba2b43b30694d5d02cd09eb5b4
[INFO] running `Command { std: "docker" "start" "-a" "9449de22107cf8999d2584ca0072e58a6f0fd1ba2b43b30694d5d02cd09eb5b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9449de22107cf8999d2584ca0072e58a6f0fd1ba2b43b30694d5d02cd09eb5b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9449de22107cf8999d2584ca0072e58a6f0fd1ba2b43b30694d5d02cd09eb5b4", kill_on_drop: false }`
[INFO] [stdout] 9449de22107cf8999d2584ca0072e58a6f0fd1ba2b43b30694d5d02cd09eb5b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+4c5f6e6277b89e47d73a192078697f7a5f3dc0ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c6b47911a63d6c1143e63ded2bdbf55db01545e754f34c54f8bd55ae44b226b6
[INFO] running `Command { std: "docker" "start" "-a" "c6b47911a63d6c1143e63ded2bdbf55db01545e754f34c54f8bd55ae44b226b6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "c6b47911a63d6c1143e63ded2bdbf55db01545e754f34c54f8bd55ae44b226b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6b47911a63d6c1143e63ded2bdbf55db01545e754f34c54f8bd55ae44b226b6", kill_on_drop: false }`
[INFO] [stdout] c6b47911a63d6c1143e63ded2bdbf55db01545e754f34c54f8bd55ae44b226b6