[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] testing hgranthorner/rust-advent-2015 against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhgranthorner%2Frust-advent-2015" "/workspace/builds/worker-16/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-16/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hgranthorner/rust-advent-2015 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-16/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" "+1.55.0" "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-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d96fed1e6ed4ba01ba04a1bb391c21bfd03a0939590d99dc821ca0b1e35b1078
[INFO] running `Command { std: "docker" "start" "-a" "d96fed1e6ed4ba01ba04a1bb391c21bfd03a0939590d99dc821ca0b1e35b1078", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d96fed1e6ed4ba01ba04a1bb391c21bfd03a0939590d99dc821ca0b1e35b1078", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d96fed1e6ed4ba01ba04a1bb391c21bfd03a0939590d99dc821ca0b1e35b1078", kill_on_drop: false }`
[INFO] [stdout] d96fed1e6ed4ba01ba04a1bb391c21bfd03a0939590d99dc821ca0b1e35b1078
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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=warn" "-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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 916d03210cc5769beac135bb5ccf7c4186101a4b8beff759b59ddfe8e31b870c
[INFO] running `Command { std: "docker" "start" "-a" "916d03210cc5769beac135bb5ccf7c4186101a4b8beff759b59ddfe8e31b870c", kill_on_drop: false }`
[INFO] [stderr]    Compiling md5 v0.7.0
[INFO] [stderr]    Compiling 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.01s
[INFO] running `Command { std: "docker" "inspect" "916d03210cc5769beac135bb5ccf7c4186101a4b8beff759b59ddfe8e31b870c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "916d03210cc5769beac135bb5ccf7c4186101a4b8beff759b59ddfe8e31b870c", kill_on_drop: false }`
[INFO] [stdout] 916d03210cc5769beac135bb5ccf7c4186101a4b8beff759b59ddfe8e31b870c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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=warn" "-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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c571931e8c21e6e4b5cf3c2582fa598c937a7265829f0753da4798cd6811eeef
[INFO] running `Command { std: "docker" "start" "-a" "c571931e8c21e6e4b5cf3c2582fa598c937a7265829f0753da4798cd6811eeef", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 12.32s
[INFO] running `Command { std: "docker" "inspect" "c571931e8c21e6e4b5cf3c2582fa598c937a7265829f0753da4798cd6811eeef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c571931e8c21e6e4b5cf3c2582fa598c937a7265829f0753da4798cd6811eeef", kill_on_drop: false }`
[INFO] [stdout] c571931e8c21e6e4b5cf3c2582fa598c937a7265829f0753da4798cd6811eeef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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=warn" "-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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4f10e9a7ebf7ea46fb4dffc928c97c638021f196f18cfc932bb1cd7f32d6377e
[INFO] running `Command { std: "docker" "start" "-a" "4f10e9a7ebf7ea46fb4dffc928c97c638021f196f18cfc932bb1cd7f32d6377e", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `prefix`
[INFO] [stderr]  --> src/day_four/mod.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let prefix = "00000".to_string();
[INFO] [stderr]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_prefix`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-advent` (bin "rust-advent" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_advent-a04797d7d2f01ad1)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4f10e9a7ebf7ea46fb4dffc928c97c638021f196f18cfc932bb1cd7f32d6377e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f10e9a7ebf7ea46fb4dffc928c97c638021f196f18cfc932bb1cd7f32d6377e", kill_on_drop: false }`
[INFO] [stdout] 4f10e9a7ebf7ea46fb4dffc928c97c638021f196f18cfc932bb1cd7f32d6377e