[INFO] cloning repository https://github.com/FredericDesgreniers/advent_of_code_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FredericDesgreniers/advent_of_code_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFredericDesgreniers%2Fadvent_of_code_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFredericDesgreniers%2Fadvent_of_code_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 431d46277d54c93ce73689c6198d3261d6c0216b
[INFO] checking FredericDesgreniers/advent_of_code_rs against master#6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd for pr-153721
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFredericDesgreniers%2Fadvent_of_code_rs" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/FredericDesgreniers/advent_of_code_rs
[INFO] finished tweaking git repo https://github.com/FredericDesgreniers/advent_of_code_rs
[INFO] tweaked toml for git repo https://github.com/FredericDesgreniers/advent_of_code_rs written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/FredericDesgreniers/advent_of_code_rs on toolchain 6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/FredericDesgreniers/advent_of_code_rs 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" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rusttype v0.7.3
[INFO] [stderr]   Downloaded approx v0.3.0
[INFO] [stderr]   Downloaded arrayvec v0.4.8
[INFO] [stderr]   Downloaded color_quant v1.0.1
[INFO] [stderr]   Downloaded stb_truetype v0.2.4
[INFO] [stderr]   Downloaded byteorder v1.2.7
[INFO] [stderr]   Downloaded gif v0.10.1
[INFO] [stderr]   Downloaded lzw v0.10.0
[INFO] [stderr]   Downloaded rand_xorshift v0.1.0
[INFO] [stderr]   Downloaded rand_chacha v0.1.0
[INFO] [stderr]   Downloaded memchr v2.1.1
[INFO] [stderr]   Downloaded itertools v0.7.11
[INFO] [stderr]   Downloaded rand v0.6.1
[INFO] [stderr]   Downloaded regex-syntax v0.6.4
[INFO] [stderr]   Downloaded libc v0.2.44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 33d56e7176be999ee577821c3af02bac104458fbdcb94825c2064ccc3da181a2
[INFO] running `Command { std: "docker" "start" "33d56e7176be999ee577821c3af02bac104458fbdcb94825c2064ccc3da181a2", 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" "33d56e7176be999ee577821c3af02bac104458fbdcb94825c2064ccc3da181a2" "/opt/rustwide/cargo-home/bin/cargo" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "33d56e7176be999ee577821c3af02bac104458fbdcb94825c2064ccc3da181a2", 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" "33d56e7176be999ee577821c3af02bac104458fbdcb94825c2064ccc3da181a2" "/opt/rustwide/cargo-home/bin/cargo" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]     Checking arrayvec v0.4.8
[INFO] [stderr]    Compiling rand_chacha v0.1.0
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking regex-syntax v0.6.4
[INFO] [stderr]     Checking stb_truetype v0.2.4
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.0
[INFO] [stderr]     Checking rand_pcg v0.1.1
[INFO] [stderr]     Checking gif v0.10.1
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking approx v0.3.0
[INFO] [stderr]     Checking ordered-float v1.0.1
[INFO] [stderr]     Checking rusttype v0.7.3
[INFO] [stderr]     Checking advent_of_code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Repeat` and `SetParameter`
[INFO] [stdout]  --> src/lib.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 | use gif::{Encoder, Repeat, SetParameter};
[INFO] [stdout]   |                    ^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rusttype::Point`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use rusttype::Point;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]   --> src/lib.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::ops::Index;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Repeat` and `SetParameter`
[INFO] [stdout]  --> src/lib.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 | use gif::{Encoder, Repeat, SetParameter};
[INFO] [stdout]   |                    ^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rusttype::Point`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use rusttype::Point;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]   --> src/lib.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::ops::Index;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:53:27
[INFO] [stdout]    |
[INFO] [stdout] 53 |     ) -> Result<Self, Box<Error>> {
[INFO] [stdout]    |                           ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 53 |     ) -> Result<Self, Box<dyn Error>> {
[INFO] [stdout]    |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:53:27
[INFO] [stdout]    |
[INFO] [stdout] 53 |     ) -> Result<Self, Box<Error>> {
[INFO] [stdout]    |                           ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 53 |     ) -> Result<Self, Box<dyn Error>> {
[INFO] [stdout]    |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/bin/day4.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |         { Regex::new("\\[(:?.+) (:?[0-9]+):(:?[0-9]+)\\] (:?.*)").unwrap() };
[INFO] [stdout]    |         ^^                                                                ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 14 -         { Regex::new("\\[(:?.+) (:?[0-9]+):(:?[0-9]+)\\] (:?.*)").unwrap() };
[INFO] [stdout] 14 +         Regex::new("\\[(:?.+) (:?[0-9]+):(:?[0-9]+)\\] (:?.*)").unwrap();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `gif::Encoder`
[INFO] [stdout]  --> src/bin/day3.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use gif::Encoder;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Cow`
[INFO] [stdout]  --> src/bin/day3.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::borrow::Cow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/bin/day3.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         { Regex::new("#(:?[0-9]+) @ (:?[0-9]+),(:?[0-9]+): (:?[0-9]+)x(:?[0-9]+)").unwrap() };
[INFO] [stdout]    |         ^^                                                                                 ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 22 -         { Regex::new("#(:?[0-9]+) @ (:?[0-9]+),(:?[0-9]+): (:?[0-9]+)x(:?[0-9]+)").unwrap() };
[INFO] [stdout] 22 +         Regex::new("#(:?[0-9]+) @ (:?[0-9]+),(:?[0-9]+): (:?[0-9]+)x(:?[0-9]+)").unwrap();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day4.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut inputs = INPUT
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num_traits::real::Real`
[INFO] [stdout]  --> src/bin/day5.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num_traits::real::Real;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/bin/day6.rs:26:3
[INFO] [stdout]    |
[INFO] [stdout] 26 |         'x: for x in 0..SIZE {
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num_traits::real::Real`
[INFO] [stdout]  --> src/bin/day5.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num_traits::real::Real;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/day5.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut input = INPUT.chars().filter(|c| c.is_alphabetic()).collect_vec();
[INFO] [stdout]   |         ----^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num_traits::real::Real`
[INFO] [stdout]  --> src/bin/day6.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num_traits::real::Real;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/bin/day4.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |         { Regex::new("\\[(:?.+) (:?[0-9]+):(:?[0-9]+)\\] (:?.*)").unwrap() };
[INFO] [stdout]    |         ^^                                                                ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 14 -         { Regex::new("\\[(:?.+) (:?[0-9]+):(:?[0-9]+)\\] (:?.*)").unwrap() };
[INFO] [stdout] 14 +         Regex::new("\\[(:?.+) (:?[0-9]+):(:?[0-9]+)\\] (:?.*)").unwrap();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `bestLen` should have a snake case name
[INFO] [stdout]   --> src/bin/day5.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut bestLen = ::std::usize::MAX;
[INFO] [stdout]    |             ^^^^^^^ help: convert the identifier to snake case: `best_len`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `leftC` should have a snake case name
[INFO] [stdout]   --> src/bin/day5.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |             let leftC = input[i];
[INFO] [stdout]    |                 ^^^^^ help: convert the identifier to snake case: `left_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `rightC` should have a snake case name
[INFO] [stdout]   --> src/bin/day5.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 |             let rightC = input[i + 1];
[INFO] [stdout]    |                 ^^^^^^ help: convert the identifier to snake case: `right_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/day5.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut input = INPUT.chars().filter(|c| c.is_alphabetic()).collect_vec();
[INFO] [stdout]   |         ----^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `bestLen` should have a snake case name
[INFO] [stdout]   --> src/bin/day5.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut bestLen = ::std::usize::MAX;
[INFO] [stdout]    |             ^^^^^^^ help: convert the identifier to snake case: `best_len`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `leftC` should have a snake case name
[INFO] [stdout]   --> src/bin/day5.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |             let leftC = input[i];
[INFO] [stdout]    |                 ^^^^^ help: convert the identifier to snake case: `left_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `rightC` should have a snake case name
[INFO] [stdout]   --> src/bin/day5.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 |             let rightC = input[i + 1];
[INFO] [stdout]    |                 ^^^^^^ help: convert the identifier to snake case: `right_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/bin/day6.rs:26:3
[INFO] [stdout]    |
[INFO] [stdout] 26 |         'x: for x in 0..SIZE {
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `gif::Encoder`
[INFO] [stdout]  --> src/bin/day3.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use gif::Encoder;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Cow`
[INFO] [stdout]  --> src/bin/day3.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::borrow::Cow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/bin/day3.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         { Regex::new("#(:?[0-9]+) @ (:?[0-9]+),(:?[0-9]+): (:?[0-9]+)x(:?[0-9]+)").unwrap() };
[INFO] [stdout]    |         ^^                                                                                 ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 22 -         { Regex::new("#(:?[0-9]+) @ (:?[0-9]+),(:?[0-9]+): (:?[0-9]+)x(:?[0-9]+)").unwrap() };
[INFO] [stdout] 22 +         Regex::new("#(:?[0-9]+) @ (:?[0-9]+),(:?[0-9]+): (:?[0-9]+)x(:?[0-9]+)").unwrap();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num_traits::real::Real`
[INFO] [stdout]  --> src/bin/day6.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num_traits::real::Real;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day4.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut inputs = INPUT
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day3.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let mut image = File::create("day3_timelapse.gif").unwrap();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/day3.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         let mut update_info = false;
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `update_info`
[INFO] [stdout]    --> src/bin/day3.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         let mut update_info = false;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_update_info`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day3.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let mut image = File::create("day3_timelapse.gif").unwrap();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/day3.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         let mut update_info = false;
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `parser` should have an upper case name
[INFO] [stdout]   --> src/bin/day3.rs:21:20
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub static ref parser: Regex =
[INFO] [stdout]    |                    ^^^^^^ help: convert the identifier to upper case: `PARSER`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `update_info`
[INFO] [stdout]    --> src/bin/day3.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         let mut update_info = false;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_update_info`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `parser` should have an upper case name
[INFO] [stdout]   --> src/bin/day3.rs:21:20
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub static ref parser: Regex =
[INFO] [stdout]    |                    ^^^^^^ help: convert the identifier to upper case: `PARSER`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bin/day7.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 81 |         for (i, worker) in &mut workers.iter_mut().enumerate() {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bin/day7.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 81 |         for (i, worker) in &mut workers.iter_mut().enumerate() {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.61s
[INFO] running `Command { std: "docker" "inspect" "33d56e7176be999ee577821c3af02bac104458fbdcb94825c2064ccc3da181a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33d56e7176be999ee577821c3af02bac104458fbdcb94825c2064ccc3da181a2", kill_on_drop: false }`
[INFO] [stdout] 33d56e7176be999ee577821c3af02bac104458fbdcb94825c2064ccc3da181a2
