[INFO] cloning repository https://github.com/freethinkel/advent0fc0de2024
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/freethinkel/advent0fc0de2024" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffreethinkel%2Fadvent0fc0de2024", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffreethinkel%2Fadvent0fc0de2024'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 82f67770e083d6452eab71bfac41a27ec40fb1e9
[INFO] checking freethinkel/advent0fc0de2024 against master#36b21637e93b038453924d3c66821089e71d8baa for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffreethinkel%2Fadvent0fc0de2024" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/freethinkel/advent0fc0de2024
[INFO] finished tweaking git repo https://github.com/freethinkel/advent0fc0de2024
[INFO] tweaked toml for git repo https://github.com/freethinkel/advent0fc0de2024 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/freethinkel/advent0fc0de2024 on toolchain 36b21637e93b038453924d3c66821089e71d8baa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/freethinkel/advent0fc0de2024 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" "+36b21637e93b038453924d3c66821089e71d8baa" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c0dd4967ebdb10186f75a586ff43ded8d27c06321568ed0dbe109ecbaa75d992
[INFO] running `Command { std: "docker" "start" "-a" "c0dd4967ebdb10186f75a586ff43ded8d27c06321568ed0dbe109ecbaa75d992", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0dd4967ebdb10186f75a586ff43ded8d27c06321568ed0dbe109ecbaa75d992", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0dd4967ebdb10186f75a586ff43ded8d27c06321568ed0dbe109ecbaa75d992", kill_on_drop: false }`
[INFO] [stdout] c0dd4967ebdb10186f75a586ff43ded8d27c06321568ed0dbe109ecbaa75d992
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19ee21fdd010601cf2b2fbbfc8f65d2809ea0651f768f7c35ec7d9148f049907
[INFO] running `Command { std: "docker" "start" "-a" "19ee21fdd010601cf2b2fbbfc8f65d2809ea0651f768f7c35ec7d9148f049907", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]    Compiling anyhow v1.0.93
[INFO] [stderr]    Compiling indoc v2.0.5
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking advent0fc0de2024 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Disk` is never constructed
[INFO] [stdout]  --> src/day09/first.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Disk(Vec<DiskState>);
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Disk` is never constructed
[INFO] [stdout]   --> src/day09/second.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct Disk(Vec<DiskState>);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/day03/first.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `prepare_rules` is never used
[INFO] [stdout]  --> src/day05/first.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn prepare_rules(rules: &str) -> Vec<(i32, i32)> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `prepare_seq` is never used
[INFO] [stdout]   --> src/day05/first.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn prepare_seq(seq: &str) -> Vec<Vec<i32>> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_keys_from_value` is never used
[INFO] [stdout]   --> src/day05/first.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn get_keys_from_value(value: i32, rules: &Vec<(i32, i32)>) -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_line_vaid` is never used
[INFO] [stdout]   --> src/day05/first.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn is_line_vaid(line: &Vec<i32>, rules: &Vec<(i32, i32)>) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/day05/first.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/day03/first.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Disk` is never constructed
[INFO] [stdout]  --> src/day09/first.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Disk(Vec<DiskState>);
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Disk` is never constructed
[INFO] [stdout]   --> src/day09/second.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct Disk(Vec<DiskState>);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ant`
[INFO] [stdout]   --> src/day08/second.rs:31:10
[INFO] [stdout]    |
[INFO] [stdout] 31 |     for (ant, coords) in antennas.iter() {
[INFO] [stdout]    |          ^^^ help: if this is intentional, prefix it with an underscore: `_ant`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/day08/second.rs:79:17
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn iter(&self) -> std::slice::Iter<Vec<T>> {
[INFO] [stdout]    |                 ^^^^^     ------------------------ the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn iter(&self) -> std::slice::Iter<'_, Vec<T>> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/day01/first.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let mut right: Vec<&i64> = vecc.iter().map(|(item, _)| item).collect();
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_right`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/day01/first.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let size = left.len();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/day01/first.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut vecc: Vec<(i64, i64)> = content
[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/day01/first.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut left: Vec<&i64> = vecc.iter().map(|(item, _)| item).collect();
[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/day01/first.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let mut right: Vec<&i64> = vecc.iter().map(|(item, _)| item).collect();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/day01/first.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() -> Result<()> {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/day02/first.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn run() -> Result<()> {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/day02/first.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn run() -> Result<()> {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `xmas_count` is never used
[INFO] [stdout]  --> src/day04/first.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn xmas_count(line: &Vec<&str>) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ant`
[INFO] [stdout]   --> src/day08/second.rs:31:10
[INFO] [stdout]    |
[INFO] [stdout] 31 |     for (ant, coords) in antennas.iter() {
[INFO] [stdout]    |          ^^^ help: if this is intentional, prefix it with an underscore: `_ant`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `prepare_rules` is never used
[INFO] [stdout]  --> src/day05/first.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn prepare_rules(rules: &str) -> Vec<(i32, i32)> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `prepare_seq` is never used
[INFO] [stdout]   --> src/day05/first.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn prepare_seq(seq: &str) -> Vec<Vec<i32>> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_keys_from_value` is never used
[INFO] [stdout]   --> src/day05/first.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn get_keys_from_value(value: i32, rules: &Vec<(i32, i32)>) -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_line_vaid` is never used
[INFO] [stdout]   --> src/day05/first.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn is_line_vaid(line: &Vec<i32>, rules: &Vec<(i32, i32)>) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/day05/first.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rotate_45` is never used
[INFO] [stdout]   --> src/day04/first.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn rotate_45<T: Clone>(matrix: Vec<Vec<T>>) -> Vec<Vec<Option<T>>> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rotate_90` is never used
[INFO] [stdout]   --> src/day04/first.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn rotate_90<T: Clone>(matrix: Vec<Vec<T>>) -> Vec<Vec<T>> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/day04/first.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/day08/second.rs:79:17
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn iter(&self) -> std::slice::Iter<Vec<T>> {
[INFO] [stdout]    |                 ^^^^^     ------------------------ the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn iter(&self) -> std::slice::Iter<'_, Vec<T>> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/day01/first.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let mut right: Vec<&i64> = vecc.iter().map(|(item, _)| item).collect();
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_right`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/day01/first.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let size = left.len();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `xmas_count` is never used
[INFO] [stdout]  --> src/day04/first.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn xmas_count(line: &Vec<&str>) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rotate_45` is never used
[INFO] [stdout]   --> src/day04/first.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn rotate_45<T: Clone>(matrix: Vec<Vec<T>>) -> Vec<Vec<Option<T>>> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rotate_90` is never used
[INFO] [stdout]   --> src/day04/first.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn rotate_90<T: Clone>(matrix: Vec<Vec<T>>) -> Vec<Vec<T>> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/day04/first.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/day01/first.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut vecc: Vec<(i64, i64)> = content
[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/day01/first.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut left: Vec<&i64> = vecc.iter().map(|(item, _)| item).collect();
[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/day01/first.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let mut right: Vec<&i64> = vecc.iter().map(|(item, _)| item).collect();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/day01/first.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() -> Result<()> {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.41s
[INFO] running `Command { std: "docker" "inspect" "19ee21fdd010601cf2b2fbbfc8f65d2809ea0651f768f7c35ec7d9148f049907", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19ee21fdd010601cf2b2fbbfc8f65d2809ea0651f768f7c35ec7d9148f049907", kill_on_drop: false }`
[INFO] [stdout] 19ee21fdd010601cf2b2fbbfc8f65d2809ea0651f768f7c35ec7d9148f049907
