[INFO] cloning repository https://github.com/mStegall/advent2022
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mStegall/advent2022" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmStegall%2Fadvent2022", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmStegall%2Fadvent2022'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3b9510959070c67227914b453d74ebbd00f086c9
[INFO] checking mStegall/advent2022 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmStegall%2Fadvent2022" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mStegall/advent2022 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mStegall/advent2022
[INFO] finished tweaking git repo https://github.com/mStegall/advent2022
[INFO] tweaked toml for git repo https://github.com/mStegall/advent2022 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mStegall/advent2022 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f890eb529dff16d3f8faf8fcea9605f99c4236712196353616db898420c3d4ef
[INFO] running `Command { std: "docker" "start" "-a" "f890eb529dff16d3f8faf8fcea9605f99c4236712196353616db898420c3d4ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f890eb529dff16d3f8faf8fcea9605f99c4236712196353616db898420c3d4ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f890eb529dff16d3f8faf8fcea9605f99c4236712196353616db898420c3d4ef", kill_on_drop: false }`
[INFO] [stdout] f890eb529dff16d3f8faf8fcea9605f99c4236712196353616db898420c3d4ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8be07b16ad75d89dd286b6047a2e3bbef45f3668de725b5071b38feca8a6748
[INFO] running `Command { std: "docker" "start" "-a" "f8be07b16ad75d89dd286b6047a2e3bbef45f3668de725b5071b38feca8a6748", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking advent2022 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> src/bin/day24/problem1.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, HashSet, VecDeque};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal_strength_sum`
[INFO] [stdout]  --> src/bin/day10/problem2.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut signal_strength_sum = 0;
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal_strength_sum`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/day10/problem2.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut signal_strength_sum = 0;
[INFO] [stdout]   |         ----^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day14/problem1.rs:57:13
[INFO] [stdout]    |
[INFO] [stdout] 57 |         let mut t = field.get_mut(y).unwrap().get_mut(x - left).unwrap();
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day14/problem1.rs:74:21
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 let mut t = field.get_mut(y).unwrap().get_mut(x - left).unwrap();
[INFO] [stdout]    |                     ----^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/day14/problem1.rs:104:21
[INFO] [stdout]     |
[INFO] [stdout] 104 |                 let mut t = field.get_mut(y).unwrap().get_mut(x).unwrap();
[INFO] [stdout]     |                     ----^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root`
[INFO] [stdout]   --> src/bin/day21/problem2.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let root = map.get("root").unwrap();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[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] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day08/problem1.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |             let mut tree = &mut field[i][j];
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day08/problem1.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |             let mut tree = &mut field[i][j];
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day08/problem1.rs:38:17
[INFO] [stdout]    |
[INFO] [stdout] 38 |             let mut tree = &mut field[j][i];
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day08/problem1.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 |             let mut tree = &mut field[j][i];
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day08/problem2.rs:53:17
[INFO] [stdout]    |
[INFO] [stdout] 53 |             let mut tree = &mut field[i][j];
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `stupid_check` is assigned to, but never used
[INFO] [stdout]    --> src/bin/day07/problem2.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |     let mut stupid_check = 0;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_stupid_check` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `parent` and `name` are never read
[INFO] [stdout]   --> src/bin/day07/problem1.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     File {
[INFO] [stdout]    |     ---- fields in this variant
[INFO] [stdout] 15 |         parent: Weak<FSObject<'a>>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 16 |         name: &'a str,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `parent` and `name` are never read
[INFO] [stdout]   --> src/bin/day07/problem2.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     File {
[INFO] [stdout]    |     ---- fields in this variant
[INFO] [stdout] 16 |         parent: Weak<FSObject<'a>>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 17 |         name: &'a str,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day14/problem2.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let mut t = field.get_mut(y).unwrap().get_mut(x - left).unwrap();
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day14/problem2.rs:75:21
[INFO] [stdout]    |
[INFO] [stdout] 75 |                 let mut t = field.get_mut(y).unwrap().get_mut(x - left).unwrap();
[INFO] [stdout]    |                     ----^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/day14/problem2.rs:104:21
[INFO] [stdout]     |
[INFO] [stdout] 104 |                 let mut t = field.get_mut(y).unwrap().get_mut(x).unwrap();
[INFO] [stdout]     |                     ----^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/day14/problem2.rs:110:21
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 let mut t = field.get_mut(y).unwrap().get_mut(x).unwrap();
[INFO] [stdout]     |                     ----^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `stupid_check` is assigned to, but never used
[INFO] [stdout]    --> src/bin/day07/problem2.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |     let mut stupid_check = 0;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_stupid_check` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `parent` and `name` are never read
[INFO] [stdout]   --> src/bin/day07/problem1.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     File {
[INFO] [stdout]    |     ---- fields in this variant
[INFO] [stdout] 15 |         parent: Weak<FSObject<'a>>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 16 |         name: &'a str,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `parent` and `name` are never read
[INFO] [stdout]   --> src/bin/day07/problem2.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     File {
[INFO] [stdout]    |     ---- fields in this variant
[INFO] [stdout] 16 |         parent: Weak<FSObject<'a>>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 17 |         name: &'a str,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> src/bin/day24/problem1.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, HashSet, VecDeque};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day11/problem1.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |         for (i, mut monkey) in &mut monkeys.iter_mut().enumerate() {
[INFO] [stdout]    |                 ----^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal_strength_sum`
[INFO] [stdout]  --> src/bin/day10/problem2.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut signal_strength_sum = 0;
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal_strength_sum`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/day10/problem2.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut signal_strength_sum = 0;
[INFO] [stdout]   |         ----^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day11/problem2.rs:58:17
[INFO] [stdout]    |
[INFO] [stdout] 58 |         for (i, mut monkey) in &mut monkeys.iter_mut().enumerate() {
[INFO] [stdout]    |                 ----^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day08/problem1.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |             let mut tree = &mut field[i][j];
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day08/problem1.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |             let mut tree = &mut field[i][j];
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day08/problem1.rs:38:17
[INFO] [stdout]    |
[INFO] [stdout] 38 |             let mut tree = &mut field[j][i];
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day08/problem1.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 |             let mut tree = &mut field[j][i];
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day08/problem2.rs:53:17
[INFO] [stdout]    |
[INFO] [stdout] 53 |             let mut tree = &mut field[i][j];
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root`
[INFO] [stdout]   --> src/bin/day21/problem2.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let root = map.get("root").unwrap();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[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] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day11/problem1.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |         for (i, mut monkey) in &mut monkeys.iter_mut().enumerate() {
[INFO] [stdout]    |                 ----^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day11/problem2.rs:58:17
[INFO] [stdout]    |
[INFO] [stdout] 58 |         for (i, mut monkey) in &mut monkeys.iter_mut().enumerate() {
[INFO] [stdout]    |                 ----^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day14/problem1.rs:57:13
[INFO] [stdout]    |
[INFO] [stdout] 57 |         let mut t = field.get_mut(y).unwrap().get_mut(x - left).unwrap();
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day14/problem1.rs:74:21
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 let mut t = field.get_mut(y).unwrap().get_mut(x - left).unwrap();
[INFO] [stdout]    |                     ----^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/day14/problem1.rs:104:21
[INFO] [stdout]     |
[INFO] [stdout] 104 |                 let mut t = field.get_mut(y).unwrap().get_mut(x).unwrap();
[INFO] [stdout]     |                     ----^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day14/problem2.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let mut t = field.get_mut(y).unwrap().get_mut(x - left).unwrap();
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day14/problem2.rs:75:21
[INFO] [stdout]    |
[INFO] [stdout] 75 |                 let mut t = field.get_mut(y).unwrap().get_mut(x - left).unwrap();
[INFO] [stdout]    |                     ----^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/day14/problem2.rs:104:21
[INFO] [stdout]     |
[INFO] [stdout] 104 |                 let mut t = field.get_mut(y).unwrap().get_mut(x).unwrap();
[INFO] [stdout]     |                     ----^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/day14/problem2.rs:110:21
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 let mut t = field.get_mut(y).unwrap().get_mut(x).unwrap();
[INFO] [stdout]     |                     ----^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.06s
[INFO] running `Command { std: "docker" "inspect" "f8be07b16ad75d89dd286b6047a2e3bbef45f3668de725b5071b38feca8a6748", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8be07b16ad75d89dd286b6047a2e3bbef45f3668de725b5071b38feca8a6748", kill_on_drop: false }`
[INFO] [stdout] f8be07b16ad75d89dd286b6047a2e3bbef45f3668de725b5071b38feca8a6748