[INFO] cloning repository https://github.com/dg01099/advent-of-code-2023
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dg01099/advent-of-code-2023" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdg01099%2Fadvent-of-code-2023", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdg01099%2Fadvent-of-code-2023'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 343514051da11cac71df75215e4d230ee906b256
[INFO] checking dg01099/advent-of-code-2023 against try#6757d700f93f6d16c8b39cf79e96b019bd570e7d for pr-155299-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdg01099%2Fadvent-of-code-2023" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dg01099/advent-of-code-2023
[INFO] finished tweaking git repo https://github.com/dg01099/advent-of-code-2023
[INFO] tweaked toml for git repo https://github.com/dg01099/advent-of-code-2023 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dg01099/advent-of-code-2023 on toolchain 6757d700f93f6d16c8b39cf79e96b019bd570e7d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dg01099/advent-of-code-2023 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" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d675dd476c58170e2225d1dff991e5841bea4b323d65eb0e4a7556fdba8882f9
[INFO] running `Command { std: "docker" "start" "-a" "d675dd476c58170e2225d1dff991e5841bea4b323d65eb0e4a7556fdba8882f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d675dd476c58170e2225d1dff991e5841bea4b323d65eb0e4a7556fdba8882f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d675dd476c58170e2225d1dff991e5841bea4b323d65eb0e4a7556fdba8882f9", kill_on_drop: false }`
[INFO] [stdout] d675dd476c58170e2225d1dff991e5841bea4b323d65eb0e4a7556fdba8882f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c33ad20071478455b11926a9309f693e68c3c6eeb71802157e6d49fb2713d11b
[INFO] running `Command { std: "docker" "start" "-a" "c33ad20071478455b11926a9309f693e68c3c6eeb71802157e6d49fb2713d11b", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking day-04 v0.1.0 (/opt/rustwide/workdir/crates/day-04)
[INFO] [stderr]     Checking day-03 v0.1.0 (/opt/rustwide/workdir/crates/day-03)
[INFO] [stderr]     Checking day-05 v0.1.0 (/opt/rustwide/workdir/crates/day-05)
[INFO] [stderr]     Checking day-07 v0.1.0 (/opt/rustwide/workdir/crates/day-07)
[INFO] [stderr]     Checking day-06 v0.1.0 (/opt/rustwide/workdir/crates/day-06)
[INFO] [stderr]     Checking day-01 v0.1.0 (/opt/rustwide/workdir/crates/day-01)
[INFO] [stdout] warning: unused import: `Bytes`
[INFO] [stdout]  --> crates/day-07/src/main.rs:3:35
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufRead, BufReader, Bytes, Error};
[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: `Bytes`
[INFO] [stdout]  --> crates/day-07/src/main.rs:3:35
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufRead, BufReader, Bytes, Error};
[INFO] [stdout]   |                                   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> crates/day-07/src/main.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |             _ => panic!("Unknown Game!")
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> crates/day-07/src/main.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 90 |             Games::FiveOfKind => value = 32 * 10_u64.pow(12),
[INFO] [stdout]    |             ----------------- matches some of the same values
[INFO] [stdout] 91 |             Games::FourOfKind => value = 16 * 10_u64.pow(12),
[INFO] [stdout]    |             ----------------- matches some of the same values
[INFO] [stdout] 92 |             Games::FullHouse => value = 8 * 10_u64.pow(12),
[INFO] [stdout]    |             ---------------- matches some of the same values
[INFO] [stdout] 93 |             Games::ThreeOfKind => value = 4 * 10_u64.pow(12),
[INFO] [stdout]    |             ------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 97 |             _ => panic!("Unknown Game!")
[INFO] [stdout]    |             ^ ...and 3 other patterns collectively make this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `value` is never read
[INFO] [stdout]   --> crates/day-07/src/main.rs:87:29
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let mut value:u64 = 0;
[INFO] [stdout]    |                             ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 90 |             Games::FiveOfKind => value = 32 * 10_u64.pow(12),
[INFO] [stdout]    |                                  --------------------------- `value` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> crates/day-07/src/main.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 150 |     let mut result: u64 = 0;
[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 variable: `cards`
[INFO] [stdout]    --> crates/day-07/src/main.rs:149:17
[INFO] [stdout]     |
[INFO] [stdout] 149 | pub fn part_two(cards:&Vec<String>, bids:&Vec<u64>) -> Result<u64, Error> {
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_cards`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bids`
[INFO] [stdout]    --> crates/day-07/src/main.rs:149:37
[INFO] [stdout]     |
[INFO] [stdout] 149 | pub fn part_two(cards:&Vec<String>, bids:&Vec<u64>) -> Result<u64, Error> {
[INFO] [stdout]     |                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_bids`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `cards` and `game` are never read
[INFO] [stdout]   --> crates/day-07/src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct Hand {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 36 |     cards: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 37 |     game: Games,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Hand` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> crates/day-07/src/main.rs:16:28
[INFO] [stdout]    |
[INFO] [stdout] 16 |             hands.push(hand.clone().to_string());
[INFO] [stdout]    |                            ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `number` is never read
[INFO] [stdout]   --> crates/day-03/src/main.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 number = Part::empty(row_count, PartTypes::Number)?
[INFO] [stdout]    |                 ------ `number` is overwritten here before the previous value is read
[INFO] [stdout] ...
[INFO] [stdout] 93 |             number = Part::empty(row_count, PartTypes::Number)?
[INFO] [stdout]    |             ^^^^^^ this value is reassigned later and never used
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `part` is never read
[INFO] [stdout]   --> crates/day-03/src/main.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |                 part = Part::empty(row_count, PartTypes::Part)?
[INFO] [stdout]    |                 ---- `part` is overwritten here before the previous value is read
[INFO] [stdout] ...
[INFO] [stdout] 97 |             part = Part::empty(row_count, PartTypes::Part)?
[INFO] [stdout]    |             ^^^^ this value is reassigned later and never used
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `number` is never read
[INFO] [stdout]   --> crates/day-03/src/main.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 number = Part::empty(row_count, PartTypes::Number)?
[INFO] [stdout]    |                 ------ `number` is overwritten here before the previous value is read
[INFO] [stdout] ...
[INFO] [stdout] 93 |             number = Part::empty(row_count, PartTypes::Number)?
[INFO] [stdout]    |             ^^^^^^ this value is reassigned later and never used
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `part` is never read
[INFO] [stdout]   --> crates/day-03/src/main.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |                 part = Part::empty(row_count, PartTypes::Part)?
[INFO] [stdout]    |                 ---- `part` is overwritten here before the previous value is read
[INFO] [stdout] ...
[INFO] [stdout] 97 |             part = Part::empty(row_count, PartTypes::Part)?
[INFO] [stdout]    |             ^^^^ this value is reassigned later and never used
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day-09 v0.1.0 (/opt/rustwide/workdir/crates/day-09)
[INFO] [stderr]     Checking day-10 v0.1.0 (/opt/rustwide/workdir/crates/day-10)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> crates/day-06/src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let mut result: u64 = 0;
[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 variable: `times`
[INFO] [stdout]   --> crates/day-06/src/main.rs:31:17
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn part_two(times: &Vec<u64>, distances: &Vec<u64>) -> Result<u64, Error> {
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_times`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `distances`
[INFO] [stdout]   --> crates/day-06/src/main.rs:31:35
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn part_two(times: &Vec<u64>, distances: &Vec<u64>) -> Result<u64, Error> {
[INFO] [stdout]    |                                   ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_distances`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part_one` is never used
[INFO] [stdout]   --> crates/day-01/src/main.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn part_one() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Bytes`
[INFO] [stdout]  --> crates/day-09/src/main.rs:2:35
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{BufRead, BufReader, Bytes, Error};
[INFO] [stdout]   |                                   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> crates/day-07/src/main.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |             _ => panic!("Unknown Game!")
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> crates/day-07/src/main.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 90 |             Games::FiveOfKind => value = 32 * 10_u64.pow(12),
[INFO] [stdout]    |             ----------------- matches some of the same values
[INFO] [stdout] 91 |             Games::FourOfKind => value = 16 * 10_u64.pow(12),
[INFO] [stdout]    |             ----------------- matches some of the same values
[INFO] [stdout] 92 |             Games::FullHouse => value = 8 * 10_u64.pow(12),
[INFO] [stdout]    |             ---------------- matches some of the same values
[INFO] [stdout] 93 |             Games::ThreeOfKind => value = 4 * 10_u64.pow(12),
[INFO] [stdout]    |             ------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 97 |             _ => panic!("Unknown Game!")
[INFO] [stdout]    |             ^ ...and 3 other patterns collectively make this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> crates/day-01/src/main.rs:115:5
[INFO] [stdout]     |
[INFO] [stdout] 115 |     part_two();
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 115 |     let _ = part_two();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part_one` is never used
[INFO] [stdout]   --> crates/day-01/src/main.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn part_one() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `value` is never read
[INFO] [stdout]   --> crates/day-07/src/main.rs:87:29
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let mut value:u64 = 0;
[INFO] [stdout]    |                             ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 90 |             Games::FiveOfKind => value = 32 * 10_u64.pow(12),
[INFO] [stdout]    |                                  --------------------------- `value` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> crates/day-07/src/main.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 150 |     let mut result: u64 = 0;
[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 variable: `cards`
[INFO] [stdout]    --> crates/day-07/src/main.rs:149:17
[INFO] [stdout]     |
[INFO] [stdout] 149 | pub fn part_two(cards:&Vec<String>, bids:&Vec<u64>) -> Result<u64, Error> {
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_cards`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bids`
[INFO] [stdout]    --> crates/day-07/src/main.rs:149:37
[INFO] [stdout]     |
[INFO] [stdout] 149 | pub fn part_two(cards:&Vec<String>, bids:&Vec<u64>) -> Result<u64, Error> {
[INFO] [stdout]     |                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_bids`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `cards` and `game` are never read
[INFO] [stdout]   --> crates/day-07/src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct Hand {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 36 |     cards: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 37 |     game: Games,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Hand` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> crates/day-07/src/main.rs:16:28
[INFO] [stdout]    |
[INFO] [stdout] 16 |             hands.push(hand.clone().to_string());
[INFO] [stdout]    |                            ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> crates/day-01/src/main.rs:115:5
[INFO] [stdout]     |
[INFO] [stdout] 115 |     part_two();
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 115 |     let _ = part_two();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> crates/day-05/src/main.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |     let mut maps = map_names.
[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 variable: `i`
[INFO] [stdout]   --> crates/day-10/src/lib.rs:42:14
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (i,(nx, ny)) in neighbors.iter().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: value assigned to `result` is never read
[INFO] [stdout]    --> crates/day-05/src/main.rs:152:27
[INFO] [stdout]     |
[INFO] [stdout] 152 |     let mut result: u64 = 0;
[INFO] [stdout]     |                           ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 185 |     result = *location_values.iter().min().unwrap();
[INFO] [stdout]     |     ----------------------------------------------- `result` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Field` is never constructed
[INFO] [stdout]  --> crates/day-10/src/lib.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Field {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `create` is never used
[INFO] [stdout]   --> crates/day-10/src/lib.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Field {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 19 |
[INFO] [stdout] 20 |     fn create(c: &char, pos_x: &i32, pos_y: &i32, max_x: &i32, max_y: &i32) -> Result<Self, Error> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> crates/day-05/src/main.rs:204:9
[INFO] [stdout]     |
[INFO] [stdout] 204 |     let mut maps = map_names.
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]    --> crates/day-05/src/main.rs:193:27
[INFO] [stdout]     |
[INFO] [stdout] 193 |     let mut result: u64 = 0;
[INFO] [stdout]     |                           ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 223 |     result = *location_values.iter().min().unwrap();
[INFO] [stdout]     |     ----------------------------------------------- `result` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> crates/day-05/src/main.rs:70:29
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn map_reader(map_name: &str, reader:Box<dyn BufRead>) -> Option<XToYMap> {
[INFO] [stdout]    |                             ^^^^ the lifetime is elided here         ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn map_reader(map_name: &str, reader:Box<dyn BufRead>) -> Option<XToYMap<'_>> {
[INFO] [stdout]    |                                                                             ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> crates/day-06/src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let mut result: u64 = 0;
[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 variable: `times`
[INFO] [stdout]   --> crates/day-06/src/main.rs:31:17
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn part_two(times: &Vec<u64>, distances: &Vec<u64>) -> Result<u64, Error> {
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_times`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `distances`
[INFO] [stdout]   --> crates/day-06/src/main.rs:31:35
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn part_two(times: &Vec<u64>, distances: &Vec<u64>) -> Result<u64, Error> {
[INFO] [stdout]    |                                   ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_distances`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Bytes`
[INFO] [stdout]  --> crates/day-09/src/main.rs:2:35
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{BufRead, BufReader, Bytes, Error};
[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 variable: `i`
[INFO] [stdout]   --> crates/day-10/src/lib.rs:42:14
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (i,(nx, ny)) in neighbors.iter().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: variable does not need to be mutable
[INFO] [stdout]   --> crates/day-10/src/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut result: i32 = 0;
[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 variable: `values`
[INFO] [stdout]   --> crates/day-10/src/main.rs:20:17
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn part_one(values: Vec<Vec<i32>>) -> Result<i32, Error> {
[INFO] [stdout]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_values`
[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]   --> crates/day-10/src/main.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut result: i32 = 0;
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `values`
[INFO] [stdout]   --> crates/day-10/src/main.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn part_two(values: Vec<Vec<i32>>) -> Result<i32, Error> {
[INFO] [stdout]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_values`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> crates/day-05/src/main.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |     let mut maps = map_names.
[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: value assigned to `result` is never read
[INFO] [stdout]    --> crates/day-05/src/main.rs:152:27
[INFO] [stdout]     |
[INFO] [stdout] 152 |     let mut result: u64 = 0;
[INFO] [stdout]     |                           ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 185 |     result = *location_values.iter().min().unwrap();
[INFO] [stdout]     |     ----------------------------------------------- `result` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> crates/day-05/src/main.rs:204:9
[INFO] [stdout]     |
[INFO] [stdout] 204 |     let mut maps = map_names.
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]    --> crates/day-05/src/main.rs:193:27
[INFO] [stdout]     |
[INFO] [stdout] 193 |     let mut result: u64 = 0;
[INFO] [stdout]     |                           ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 223 |     result = *location_values.iter().min().unwrap();
[INFO] [stdout]     |     ----------------------------------------------- `result` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> crates/day-05/src/main.rs:70:29
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn map_reader(map_name: &str, reader:Box<dyn BufRead>) -> Option<XToYMap> {
[INFO] [stdout]    |                             ^^^^ the lifetime is elided here         ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn map_reader(map_name: &str, reader:Box<dyn BufRead>) -> Option<XToYMap<'_>> {
[INFO] [stdout]    |                                                                             ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> crates/day-10/src/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut result: i32 = 0;
[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 variable: `values`
[INFO] [stdout]   --> crates/day-10/src/main.rs:20:17
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn part_one(values: Vec<Vec<i32>>) -> Result<i32, Error> {
[INFO] [stdout]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_values`
[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]   --> crates/day-10/src/main.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut result: i32 = 0;
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `values`
[INFO] [stdout]   --> crates/day-10/src/main.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn part_two(values: Vec<Vec<i32>>) -> Result<i32, Error> {
[INFO] [stdout]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_values`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking num-complex v0.4.4
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking num v0.4.1
[INFO] [stderr]     Checking day-08 v0.1.0 (/opt/rustwide/workdir/crates/day-08)
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]     Checking day-02 v0.1.0 (/opt/rustwide/workdir/crates/day-02)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> crates/day-02/src/main.rs:98:23
[INFO] [stdout]    |
[INFO] [stdout] 98 |             result += (power_green*power_blue*power_red);
[INFO] [stdout]    |                       ^                                ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 98 -             result += (power_green*power_blue*power_red);
[INFO] [stdout] 98 +             result += power_green*power_blue*power_red ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> crates/day-02/src/main.rs:98:23
[INFO] [stdout]    |
[INFO] [stdout] 98 |             result += (power_green*power_blue*power_red);
[INFO] [stdout]    |                       ^                                ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 98 -             result += (power_green*power_blue*power_red);
[INFO] [stdout] 98 +             result += power_green*power_blue*power_red ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]    --> crates/day-02/src/main.rs:125:85
[INFO] [stdout]     |
[INFO] [stdout] 124 |     fn test_part_one() {
[INFO] [stdout]     |     ------------------ this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] 125 |         let result = part_one(read_input("crates/day-02/test_input.txt".to_string())?, 12, 13, 14);
[INFO] [stdout]     |                                                                                     ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]     |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]     |
[INFO] [stdout] 124 ~     fn test_part_one() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 125 |         let result = part_one(read_input("crates/day-02/test_input.txt".to_string())?, 12, 13, 14);
[INFO] [stdout] 126 |         assert_eq!(result, Some(8));
[INFO] [stdout] 127 ~         Ok(())
[INFO] [stdout] 128 ~     }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0369]: binary operation `==` cannot be applied to type `Result<i32, std::io::Error>`
[INFO] [stdout]    --> crates/day-02/src/main.rs:126:9
[INFO] [stdout]     |
[INFO] [stdout] 126 |         assert_eq!(result, Some(8));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         Result<i32, std::io::Error>
[INFO] [stdout]     |         Option<{integer}>
[INFO] [stdout]     |
[INFO] [stdout] note: `Result<i32, std::io::Error>` does not implement `PartialEq<Option<{integer}>>`
[INFO] [stdout]    --> /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/core/src/result.rs:557:0
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Result<i32, std::io::Error>` is defined in another crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]    --> crates/day-02/src/main.rs:131:85
[INFO] [stdout]     |
[INFO] [stdout] 130 |     fn test_part_two() {
[INFO] [stdout]     |     ------------------ this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] 131 |         let result = part_two(read_input("crates/day-02/test_input.txt".to_string())?);
[INFO] [stdout]     |                                                                                     ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]     |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]     |
[INFO] [stdout] 130 ~     fn test_part_two() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 131 |         let result = part_two(read_input("crates/day-02/test_input.txt".to_string())?);
[INFO] [stdout] 132 |         assert_eq!(result, Some(281));
[INFO] [stdout] 133 ~         Ok(())
[INFO] [stdout] 134 ~     }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0369]: binary operation `==` cannot be applied to type `Result<i32, std::io::Error>`
[INFO] [stdout]    --> crates/day-02/src/main.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 132 |         assert_eq!(result, Some(281));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         Result<i32, std::io::Error>
[INFO] [stdout]     |         Option<{integer}>
[INFO] [stdout]     |
[INFO] [stdout] note: `Result<i32, std::io::Error>` does not implement `PartialEq<Option<{integer}>>`
[INFO] [stdout]    --> /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/core/src/result.rs:557:0
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Result<i32, std::io::Error>` is defined in another crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> crates/day-02/src/main.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut line = lines.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]   --> crates/day-02/src/main.rs:92:13
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let mut line = lines.unwrap();
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0369.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> crates/day-02/src/main.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut line = lines.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]   --> crates/day-02/src/main.rs:92:13
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let mut line = lines.unwrap();
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `day-02` (bin "day-02" test) due to 4 previous errors; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c33ad20071478455b11926a9309f693e68c3c6eeb71802157e6d49fb2713d11b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c33ad20071478455b11926a9309f693e68c3c6eeb71802157e6d49fb2713d11b", kill_on_drop: false }`
[INFO] [stdout] c33ad20071478455b11926a9309f693e68c3c6eeb71802157e6d49fb2713d11b
