[INFO] cloning repository https://github.com/hgranthorner/rust-advent-2015
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hgranthorner/rust-advent-2015" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhgranthorner%2Frust-advent-2015", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhgranthorner%2Frust-advent-2015'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9df76f4575cfe5dea9f4a7ef81d4e2fc679b455e
[INFO] checking hgranthorner/rust-advent-2015 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhgranthorner%2Frust-advent-2015" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hgranthorner/rust-advent-2015 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hgranthorner/rust-advent-2015
[INFO] finished tweaking git repo https://github.com/hgranthorner/rust-advent-2015
[INFO] tweaked toml for git repo https://github.com/hgranthorner/rust-advent-2015 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/hgranthorner/rust-advent-2015 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04c16acaab4e1e7b1c893ef3baad306b00a8a7be8509909f15d034477f864340
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "04c16acaab4e1e7b1c893ef3baad306b00a8a7be8509909f15d034477f864340", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04c16acaab4e1e7b1c893ef3baad306b00a8a7be8509909f15d034477f864340", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04c16acaab4e1e7b1c893ef3baad306b00a8a7be8509909f15d034477f864340", kill_on_drop: false }`
[INFO] [stdout] 04c16acaab4e1e7b1c893ef3baad306b00a8a7be8509909f15d034477f864340
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 511cef3d1bb9a80b7ab6c7b0e9c12bcc64a33917b0a5ee74399557275a6c872c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "511cef3d1bb9a80b7ab6c7b0e9c12bcc64a33917b0a5ee74399557275a6c872c", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-advent v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `prefix`
[INFO] [stdout]  --> src/day_four/mod.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let prefix = "00000".to_string();
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_prefix`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prefix`
[INFO] [stdout]  --> src/day_four/mod.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let prefix = "00000".to_string();
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_prefix`
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "511cef3d1bb9a80b7ab6c7b0e9c12bcc64a33917b0a5ee74399557275a6c872c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "511cef3d1bb9a80b7ab6c7b0e9c12bcc64a33917b0a5ee74399557275a6c872c", kill_on_drop: false }`
[INFO] [stdout] 511cef3d1bb9a80b7ab6c7b0e9c12bcc64a33917b0a5ee74399557275a6c872c