[INFO] cloning repository https://github.com/cdrn/advent-of-cringe
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cdrn/advent-of-cringe" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdrn%2Fadvent-of-cringe", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdrn%2Fadvent-of-cringe'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 12cdb42ab7e3e2bee05a0c8455ad2d8d95ece6fa
[INFO] checking cdrn/advent-of-cringe against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdrn%2Fadvent-of-cringe" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cdrn/advent-of-cringe on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cdrn/advent-of-cringe
[INFO] finished tweaking git repo https://github.com/cdrn/advent-of-cringe
[INFO] tweaked toml for git repo https://github.com/cdrn/advent-of-cringe written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/cdrn/advent-of-cringe already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb3d05c4523f246571a93be00da54d73b2e23ffd5cd08208b9e4a2c87bb49598
[INFO] running `Command { std: "docker" "start" "-a" "fb3d05c4523f246571a93be00da54d73b2e23ffd5cd08208b9e4a2c87bb49598", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb3d05c4523f246571a93be00da54d73b2e23ffd5cd08208b9e4a2c87bb49598", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb3d05c4523f246571a93be00da54d73b2e23ffd5cd08208b9e4a2c87bb49598", kill_on_drop: false }`
[INFO] [stdout] fb3d05c4523f246571a93be00da54d73b2e23ffd5cd08208b9e4a2c87bb49598
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c5f2893ac7bd56fea504bd27055c9d7eb7b1a6de4a51ca295478726db3f7b77
[INFO] running `Command { std: "docker" "start" "-a" "5c5f2893ac7bd56fea504bd27055c9d7eb7b1a6de4a51ca295478726db3f7b77", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]     Checking fancy-regex v0.12.0
[INFO] [stderr]     Checking advent-of-cringe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `first_number` is never read
[INFO] [stdout]   --> src/day1/mod.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let mut first_number = "".to_string();
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last_number` is never read
[INFO] [stdout]   --> src/day1/mod.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |     let mut last_number = "".to_string();
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `extract_first_and_last_number` is never used
[INFO] [stdout]   --> src/day1/mod.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn extract_first_and_last_number(line: &str) -> (String, String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `first_number` is never read
[INFO] [stdout]   --> src/day1/mod.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let mut first_number = "".to_string();
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last_number` is never read
[INFO] [stdout]   --> src/day1/mod.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |     let mut last_number = "".to_string();
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `extract_first_and_last_number` is never used
[INFO] [stdout]   --> src/day1/mod.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn extract_first_and_last_number(line: &str) -> (String, String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.39s
[INFO] running `Command { std: "docker" "inspect" "5c5f2893ac7bd56fea504bd27055c9d7eb7b1a6de4a51ca295478726db3f7b77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c5f2893ac7bd56fea504bd27055c9d7eb7b1a6de4a51ca295478726db3f7b77", kill_on_drop: false }`
[INFO] [stdout] 5c5f2893ac7bd56fea504bd27055c9d7eb7b1a6de4a51ca295478726db3f7b77