[INFO] cloning repository https://github.com/MrMcEpic/Rust-Monty-Hall
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MrMcEpic/Rust-Monty-Hall" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMrMcEpic%2FRust-Monty-Hall", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMrMcEpic%2FRust-Monty-Hall'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 102cbd7793ddf4dfbe7f8c644dea1b5070fdb86a
[INFO] checking MrMcEpic/Rust-Monty-Hall against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMrMcEpic%2FRust-Monty-Hall" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MrMcEpic/Rust-Monty-Hall on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MrMcEpic/Rust-Monty-Hall
[INFO] finished tweaking git repo https://github.com/MrMcEpic/Rust-Monty-Hall
[INFO] tweaked toml for git repo https://github.com/MrMcEpic/Rust-Monty-Hall written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/MrMcEpic/Rust-Monty-Hall already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e40f6cd3ef9cd1f5082d3f1269ad73292238dfa7fdf58aae2040f27f735f7472
[INFO] running `Command { std: "docker" "start" "-a" "e40f6cd3ef9cd1f5082d3f1269ad73292238dfa7fdf58aae2040f27f735f7472", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e40f6cd3ef9cd1f5082d3f1269ad73292238dfa7fdf58aae2040f27f735f7472", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e40f6cd3ef9cd1f5082d3f1269ad73292238dfa7fdf58aae2040f27f735f7472", kill_on_drop: false }`
[INFO] [stdout] e40f6cd3ef9cd1f5082d3f1269ad73292238dfa7fdf58aae2040f27f735f7472
[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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1afaf8d4a4cfb8f0c96e7270721553d296db71a1ce5be03dc12962fb25404c5
[INFO] running `Command { std: "docker" "start" "-a" "f1afaf8d4a4cfb8f0c96e7270721553d296db71a1ce5be03dc12962fb25404c5", kill_on_drop: false }`
[INFO] [stderr]     Checking boxes v0.1.0 (/opt/rustwide/workdir/boxes)
[INFO] [stdout] error[E0599]: no method named `remove_item` found for struct `Vec<usize>` in the current scope
[INFO] [stdout]   --> boxes/src/lib.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |             options.remove_item(&first_pick.0); //removes their inital box pick from a list of possible boxes
[INFO] [stdout]    |                     ^^^^^^^^^^^ method not found in `Vec<usize>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `boxes`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "f1afaf8d4a4cfb8f0c96e7270721553d296db71a1ce5be03dc12962fb25404c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1afaf8d4a4cfb8f0c96e7270721553d296db71a1ce5be03dc12962fb25404c5", kill_on_drop: false }`
[INFO] [stdout] f1afaf8d4a4cfb8f0c96e7270721553d296db71a1ce5be03dc12962fb25404c5