[INFO] cloning repository https://github.com/h3ndrk/advent_of_code
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/h3ndrk/advent_of_code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh3ndrk%2Fadvent_of_code", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh3ndrk%2Fadvent_of_code'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 47e12d42d21d123ab19431ff96ebacab679be7e6
[INFO] checking h3ndrk/advent_of_code against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh3ndrk%2Fadvent_of_code" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/h3ndrk/advent_of_code 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/h3ndrk/advent_of_code
[INFO] finished tweaking git repo https://github.com/h3ndrk/advent_of_code
[INFO] tweaked toml for git repo https://github.com/h3ndrk/advent_of_code written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/h3ndrk/advent_of_code 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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 5e388d42addc2cad873fd4381629c84a1a9f68ec88ae9551a7f700d35dac597a
[INFO] running `Command { std: "docker" "start" "-a" "5e388d42addc2cad873fd4381629c84a1a9f68ec88ae9551a7f700d35dac597a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e388d42addc2cad873fd4381629c84a1a9f68ec88ae9551a7f700d35dac597a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e388d42addc2cad873fd4381629c84a1a9f68ec88ae9551a7f700d35dac597a", kill_on_drop: false }`
[INFO] [stdout] 5e388d42addc2cad873fd4381629c84a1a9f68ec88ae9551a7f700d35dac597a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 19422f2a9bf46a43321a11d0824013c29d1476c7567db2e0ca782190f45d0f2d
[INFO] running `Command { std: "docker" "start" "-a" "19422f2a9bf46a43321a11d0824013c29d1476c7567db2e0ca782190f45d0f2d", kill_on_drop: false }`
[INFO] [stderr]     Checking advent_of_code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]    --> src/bin/2021-12-20.rs:171:33
[INFO] [stdout]     |
[INFO] [stdout] 171 |                         true => (1 << bit_index),
[INFO] [stdout]     |                                 ^              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 171 -                         true => (1 << bit_index),
[INFO] [stdout] 171 +                         true => 1 << bit_index,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `from_str` and `from_iterator` are never used
[INFO] [stdout]    --> src/bin/2021-12-14.rs:173:8
[INFO] [stdout]     |
[INFO] [stdout] 172 | impl PolymerIterator {
[INFO] [stdout]     | -------------------- associated functions in this implementation
[INFO] [stdout] 173 |     fn from_str(input: &'static str, rules: &HashMap<(char, char), char>) -> Self {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 186 |     fn from_iterator(iterator: PolymerIterator, rules: &HashMap<(char, char), char>) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_counts` is never used
[INFO] [stdout]    --> src/bin/2021-12-14.rs:230:4
[INFO] [stdout]     |
[INFO] [stdout] 230 | fn calculate_counts(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]    --> src/bin/2021-12-20.rs:171:33
[INFO] [stdout]     |
[INFO] [stdout] 171 |                         true => (1 << bit_index),
[INFO] [stdout]     |                                 ^              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 171 -                         true => (1 << bit_index),
[INFO] [stdout] 171 +                         true => 1 << bit_index,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/bin/2021-12-10.rs:172:27
[INFO] [stdout]     |
[INFO] [stdout] 172 |         completion_scores[(completion_scores.len() / 2)]
[INFO] [stdout]     |                           ^                           ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 172 -         completion_scores[(completion_scores.len() / 2)]
[INFO] [stdout] 172 +         completion_scores[completion_scores.len() / 2]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `from_str` and `from_iterator` are never used
[INFO] [stdout]    --> src/bin/2021-12-14.rs:173:8
[INFO] [stdout]     |
[INFO] [stdout] 172 | impl PolymerIterator {
[INFO] [stdout]     | -------------------- associated functions in this implementation
[INFO] [stdout] 173 |     fn from_str(input: &'static str, rules: &HashMap<(char, char), char>) -> Self {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 186 |     fn from_iterator(iterator: PolymerIterator, rules: &HashMap<(char, char), char>) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_counts` is never used
[INFO] [stdout]    --> src/bin/2021-12-14.rs:230:4
[INFO] [stdout]     |
[INFO] [stdout] 230 | fn calculate_counts(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/bin/2021-12-10.rs:172:27
[INFO] [stdout]     |
[INFO] [stdout] 172 |         completion_scores[(completion_scores.len() / 2)]
[INFO] [stdout]     |                           ^                           ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 172 -         completion_scores[(completion_scores.len() / 2)]
[INFO] [stdout] 172 +         completion_scores[completion_scores.len() / 2]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `infinite_series` is never used
[INFO] [stdout]    --> src/bin/2021-12-17.rs:177:4
[INFO] [stdout]     |
[INFO] [stdout] 177 | fn infinite_series(n: isize) -> isize {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `infinite_series` is never used
[INFO] [stdout]    --> src/bin/2021-12-17.rs:177:4
[INFO] [stdout]     |
[INFO] [stdout] 177 | fn infinite_series(n: isize) -> isize {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "19422f2a9bf46a43321a11d0824013c29d1476c7567db2e0ca782190f45d0f2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19422f2a9bf46a43321a11d0824013c29d1476c7567db2e0ca782190f45d0f2d", kill_on_drop: false }`
[INFO] [stdout] 19422f2a9bf46a43321a11d0824013c29d1476c7567db2e0ca782190f45d0f2d