[INFO] cloning repository https://github.com/BrianLee608/adventofcode2017rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BrianLee608/adventofcode2017rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBrianLee608%2Fadventofcode2017rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBrianLee608%2Fadventofcode2017rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a47b55f3ce8b0112177be640939ce88187b9dbd5
[INFO] checking BrianLee608/adventofcode2017rust against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBrianLee608%2Fadventofcode2017rust" "/workspace/builds/worker-56/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-56/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BrianLee608/adventofcode2017rust on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BrianLee608/adventofcode2017rust
[INFO] finished tweaking git repo https://github.com/BrianLee608/adventofcode2017rust
[INFO] tweaked toml for git repo https://github.com/BrianLee608/adventofcode2017rust written to /workspace/builds/worker-56/source/Cargo.toml
[INFO] crate git repo https://github.com/BrianLee608/adventofcode2017rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "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-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa4550f3e2abe21163ed18fa868e42e85d5359c7084c07ef7fa38ab4c0a031d9
[INFO] running `Command { std: "docker" "start" "-a" "fa4550f3e2abe21163ed18fa868e42e85d5359c7084c07ef7fa38ab4c0a031d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa4550f3e2abe21163ed18fa868e42e85d5359c7084c07ef7fa38ab4c0a031d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa4550f3e2abe21163ed18fa868e42e85d5359c7084c07ef7fa38ab4c0a031d9", kill_on_drop: false }`
[INFO] [stdout] fa4550f3e2abe21163ed18fa868e42e85d5359c7084c07ef7fa38ab4c0a031d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62f66f8284b7267d1a3ca895c5e058d1e4e0d29045a77abbffabbcd707a4ecab
[INFO] running `Command { std: "docker" "start" "-a" "62f66f8284b7267d1a3ca895c5e058d1e4e0d29045a77abbffabbcd707a4ecab", kill_on_drop: false }`
[INFO] [stderr]     Checking adventofcode2017 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/day2.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | ;
[INFO] [stdout]    | ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `min_max_diff`
[INFO] [stdout]  --> src/day2.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn min_max_diff(line: &str) -> u32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/day2.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | ;
[INFO] [stdout]    | ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `min_max_diff`
[INFO] [stdout]  --> src/day2.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn min_max_diff(line: &str) -> u32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.46s
[INFO] running `Command { std: "docker" "inspect" "62f66f8284b7267d1a3ca895c5e058d1e4e0d29045a77abbffabbcd707a4ecab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62f66f8284b7267d1a3ca895c5e058d1e4e0d29045a77abbffabbcd707a4ecab", kill_on_drop: false }`
[INFO] [stdout] 62f66f8284b7267d1a3ca895c5e058d1e4e0d29045a77abbffabbcd707a4ecab