[INFO] cloning repository https://github.com/Mereep/advent_of_code_2021_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Mereep/advent_of_code_2021_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMereep%2Fadvent_of_code_2021_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMereep%2Fadvent_of_code_2021_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d1d5348f43517bc2b6d6f9599fd03b2d92112927
[INFO] checking Mereep/advent_of_code_2021_rust against 5c543b0b8c73c7b72bc8284ced4fb22ead15734d for pr-160186
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMereep%2Fadvent_of_code_2021_rust" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Mereep/advent_of_code_2021_rust
[INFO] finished tweaking git repo https://github.com/Mereep/advent_of_code_2021_rust
[INFO] tweaked toml for git repo https://github.com/Mereep/advent_of_code_2021_rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Mereep/advent_of_code_2021_rust on toolchain 5c543b0b8c73c7b72bc8284ced4fb22ead15734d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Mereep/advent_of_code_2021_rust 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" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] cf2194b4584088a672123d9b668a0dbce7d2e3ff972632344fd3326e7fb6d972
[INFO] running `Command { std: "docker" "start" "cf2194b4584088a672123d9b668a0dbce7d2e3ff972632344fd3326e7fb6d972", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf2194b4584088a672123d9b668a0dbce7d2e3ff972632344fd3326e7fb6d972", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "cf2194b4584088a672123d9b668a0dbce7d2e3ff972632344fd3326e7fb6d972" "/opt/rustwide/cargo-home/bin/cargo" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf2194b4584088a672123d9b668a0dbce7d2e3ff972632344fd3326e7fb6d972", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "cf2194b4584088a672123d9b668a0dbce7d2e3ff972632344fd3326e7fb6d972" "/opt/rustwide/cargo-home/bin/cargo" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking advent_of_code_2021 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/day14/mod.rs:89:14
[INFO] [stdout]    |
[INFO] [stdout] 89 | pub fn task2(data: &Vec<String>) -> u64 {
[INFO] [stdout]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&char` instead of cloning the inner type
[INFO] [stdout]   --> src/day8/mod.rs:90:100
[INFO] [stdout]    |
[INFO] [stdout] 90 |         let segment_1 = *seven_chars.difference(&one_char).collect::<Vec<&char>>().first().unwrap().clone();
[INFO] [stdout]    |                                                                                                    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&char` instead of cloning the inner type
[INFO] [stdout]   --> src/day8/mod.rs:99:118
[INFO] [stdout]    |
[INFO] [stdout] 99 |         let segment_5 = *segments_3_5.difference(&string_to_char_set(&four)).collect::<Vec<&char>>().first().unwrap().clone();
[INFO] [stdout]    |                                                                                                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&char` instead of cloning the inner type
[INFO] [stdout]    --> src/day8/mod.rs:101:121
[INFO] [stdout]     |
[INFO] [stdout] 101 |         let segment_3 = *sub_char_from_hashset(&segments_3_5, segment_5).iter().collect::<Vec<&char>>().first().unwrap().clone();
[INFO] [stdout]     |                                                                                                                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&char` instead of cloning the inner type
[INFO] [stdout]    --> src/day8/mod.rs:107:131
[INFO] [stdout]     |
[INFO] [stdout] 107 | ..., segment_3).iter().collect::<Vec<&char>>().first().unwrap().clone();
[INFO] [stdout]     |                                                                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&char` instead of cloning the inner type
[INFO] [stdout]    --> src/day8/mod.rs:117:122
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let segment_4 = *eight_minus_four_minus_segment_1_minus_segment_5.iter().collect::<Vec<&char>>().first().unwrap().clone();
[INFO] [stdout]     |                                                                                                                          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&char` instead of cloning the inner type
[INFO] [stdout]    --> src/day8/mod.rs:132:38
[INFO] [stdout]     |
[INFO] [stdout] 132 |                     .first().unwrap().clone();
[INFO] [stdout]     |                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&char` instead of cloning the inner type
[INFO] [stdout]    --> src/day8/mod.rs:137:133
[INFO] [stdout]     |
[INFO] [stdout] 137 | ..., segment_6).iter().collect::<Vec<&char>>().first().unwrap().clone();
[INFO] [stdout]     |                                                                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/day14/mod.rs:89:14
[INFO] [stdout]    |
[INFO] [stdout] 89 | pub fn task2(data: &Vec<String>) -> u64 {
[INFO] [stdout]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&char` instead of cloning the inner type
[INFO] [stdout]   --> src/day8/mod.rs:90:100
[INFO] [stdout]    |
[INFO] [stdout] 90 |         let segment_1 = *seven_chars.difference(&one_char).collect::<Vec<&char>>().first().unwrap().clone();
[INFO] [stdout]    |                                                                                                    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&char` instead of cloning the inner type
[INFO] [stdout]   --> src/day8/mod.rs:99:118
[INFO] [stdout]    |
[INFO] [stdout] 99 |         let segment_5 = *segments_3_5.difference(&string_to_char_set(&four)).collect::<Vec<&char>>().first().unwrap().clone();
[INFO] [stdout]    |                                                                                                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&char` instead of cloning the inner type
[INFO] [stdout]    --> src/day8/mod.rs:101:121
[INFO] [stdout]     |
[INFO] [stdout] 101 |         let segment_3 = *sub_char_from_hashset(&segments_3_5, segment_5).iter().collect::<Vec<&char>>().first().unwrap().clone();
[INFO] [stdout]     |                                                                                                                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&char` instead of cloning the inner type
[INFO] [stdout]    --> src/day8/mod.rs:107:131
[INFO] [stdout]     |
[INFO] [stdout] 107 | ..., segment_3).iter().collect::<Vec<&char>>().first().unwrap().clone();
[INFO] [stdout]     |                                                                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&char` instead of cloning the inner type
[INFO] [stdout]    --> src/day8/mod.rs:117:122
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let segment_4 = *eight_minus_four_minus_segment_1_minus_segment_5.iter().collect::<Vec<&char>>().first().unwrap().clone();
[INFO] [stdout]     |                                                                                                                          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&char` instead of cloning the inner type
[INFO] [stdout]    --> src/day8/mod.rs:132:38
[INFO] [stdout]     |
[INFO] [stdout] 132 |                     .first().unwrap().clone();
[INFO] [stdout]     |                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&char` instead of cloning the inner type
[INFO] [stdout]    --> src/day8/mod.rs:137:133
[INFO] [stdout]     |
[INFO] [stdout] 137 | ..., segment_6).iter().collect::<Vec<&char>>().first().unwrap().clone();
[INFO] [stdout]     |                                                                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "cf2194b4584088a672123d9b668a0dbce7d2e3ff972632344fd3326e7fb6d972", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf2194b4584088a672123d9b668a0dbce7d2e3ff972632344fd3326e7fb6d972", kill_on_drop: false }`
[INFO] [stdout] cf2194b4584088a672123d9b668a0dbce7d2e3ff972632344fd3326e7fb6d972
