[INFO] cloning repository https://github.com/MonkeyAndres/rust-rover
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MonkeyAndres/rust-rover" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMonkeyAndres%2Frust-rover", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMonkeyAndres%2Frust-rover'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4244e6cc6f9a34f71a4f15c341175e8596554b01
[INFO] checking MonkeyAndres/rust-rover against master#568f6a8641e391ffcdcdb03e79d0901731d8d399 for pr-117164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMonkeyAndres%2Frust-rover" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MonkeyAndres/rust-rover on toolchain 568f6a8641e391ffcdcdb03e79d0901731d8d399
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+568f6a8641e391ffcdcdb03e79d0901731d8d399" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MonkeyAndres/rust-rover
[INFO] finished tweaking git repo https://github.com/MonkeyAndres/rust-rover
[INFO] tweaked toml for git repo https://github.com/MonkeyAndres/rust-rover written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/MonkeyAndres/rust-rover already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+568f6a8641e391ffcdcdb03e79d0901731d8d399" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking MonkeyAndres/rust-rover against try#eb3956d47f58f1c7c0a5694b1d3401945bc41dce for pr-117164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMonkeyAndres%2Frust-rover" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MonkeyAndres/rust-rover on toolchain eb3956d47f58f1c7c0a5694b1d3401945bc41dce
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eb3956d47f58f1c7c0a5694b1d3401945bc41dce" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MonkeyAndres/rust-rover
[INFO] finished tweaking git repo https://github.com/MonkeyAndres/rust-rover
[INFO] tweaked toml for git repo https://github.com/MonkeyAndres/rust-rover written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/MonkeyAndres/rust-rover already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eb3956d47f58f1c7c0a5694b1d3401945bc41dce" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking MonkeyAndres/rust-rover against try#eb3956d47f58f1c7c0a5694b1d3401945bc41dce for pr-117164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMonkeyAndres%2Frust-rover" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MonkeyAndres/rust-rover on toolchain eb3956d47f58f1c7c0a5694b1d3401945bc41dce
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eb3956d47f58f1c7c0a5694b1d3401945bc41dce" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MonkeyAndres/rust-rover
[INFO] finished tweaking git repo https://github.com/MonkeyAndres/rust-rover
[INFO] tweaked toml for git repo https://github.com/MonkeyAndres/rust-rover written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/MonkeyAndres/rust-rover already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eb3956d47f58f1c7c0a5694b1d3401945bc41dce" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+eb3956d47f58f1c7c0a5694b1d3401945bc41dce" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f48f756b0e5f9da4a28477236b723d65357c437e3d2d2982574c767c386fc1aa
[INFO] running `Command { std: "docker" "start" "-a" "f48f756b0e5f9da4a28477236b723d65357c437e3d2d2982574c767c386fc1aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f48f756b0e5f9da4a28477236b723d65357c437e3d2d2982574c767c386fc1aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f48f756b0e5f9da4a28477236b723d65357c437e3d2d2982574c767c386fc1aa", kill_on_drop: false }`
[INFO] [stdout] f48f756b0e5f9da4a28477236b723d65357c437e3d2d2982574c767c386fc1aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+eb3956d47f58f1c7c0a5694b1d3401945bc41dce" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a058be3d7919f9a37a408f181ee842ab7ed78f3296f8222f55191d517188cd34
[INFO] running `Command { std: "docker" "start" "-a" "a058be3d7919f9a37a408f181ee842ab7ed78f3296f8222f55191d517188cd34", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-rover v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `result3`
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let result3 = rover(&example_commands);
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_result3`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result3`
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let result3 = rover(&example_commands);
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_result3`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "a058be3d7919f9a37a408f181ee842ab7ed78f3296f8222f55191d517188cd34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a058be3d7919f9a37a408f181ee842ab7ed78f3296f8222f55191d517188cd34", kill_on_drop: false }`
[INFO] [stdout] a058be3d7919f9a37a408f181ee842ab7ed78f3296f8222f55191d517188cd34