[INFO] cloning repository https://github.com/Peter-D-Finch/411-A1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Peter-D-Finch/411-A1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPeter-D-Finch%2F411-A1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPeter-D-Finch%2F411-A1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aa62892d34b9d9df83cda08b71f4bfa08bcd3be1
[INFO] checking Peter-D-Finch/411-A1 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPeter-D-Finch%2F411-A1" "/workspace/builds/worker-85/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-85/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Peter-D-Finch/411-A1 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Peter-D-Finch/411-A1
[INFO] finished tweaking git repo https://github.com/Peter-D-Finch/411-A1
[INFO] tweaked toml for git repo https://github.com/Peter-D-Finch/411-A1 written to /workspace/builds/worker-85/source/Cargo.toml
[INFO] crate git repo https://github.com/Peter-D-Finch/411-A1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "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-85/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e093a6f50996b5a30c7406bc1f39cc9f05d2e97203f967b3fe03afa90d623f24
[INFO] running `Command { std: "docker" "start" "-a" "e093a6f50996b5a30c7406bc1f39cc9f05d2e97203f967b3fe03afa90d623f24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e093a6f50996b5a30c7406bc1f39cc9f05d2e97203f967b3fe03afa90d623f24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e093a6f50996b5a30c7406bc1f39cc9f05d2e97203f967b3fe03afa90d623f24", kill_on_drop: false }`
[INFO] [stdout] e093a6f50996b5a30c7406bc1f39cc9f05d2e97203f967b3fe03afa90d623f24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dffba6206a8003b7cea232581a80e811a5e6dc17719eaec07a7d0642bb0cf048
[INFO] running `Command { std: "docker" "start" "-a" "dffba6206a8003b7cea232581a80e811a5e6dc17719eaec07a7d0642bb0cf048", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking fgroups v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `ws_idx`
[INFO] [stdout]  --> src/main.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let ws_idx = element.chars().position(|c| c == ' ').unwrap();
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ws_idx`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ws_idx`
[INFO] [stdout]  --> src/main.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let ws_idx = element.chars().position(|c| c == ' ').unwrap();
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ws_idx`
[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 0.48s
[INFO] running `Command { std: "docker" "inspect" "dffba6206a8003b7cea232581a80e811a5e6dc17719eaec07a7d0642bb0cf048", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dffba6206a8003b7cea232581a80e811a5e6dc17719eaec07a7d0642bb0cf048", kill_on_drop: false }`
[INFO] [stdout] dffba6206a8003b7cea232581a80e811a5e6dc17719eaec07a7d0642bb0cf048