[INFO] cloning repository https://github.com/qdozaq/advent-of-code-2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/qdozaq/advent-of-code-2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqdozaq%2Fadvent-of-code-2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqdozaq%2Fadvent-of-code-2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dedeca3f5ae43ead539ea96a2091990e8735e58d
[INFO] checking qdozaq/advent-of-code-2021 against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqdozaq%2Fadvent-of-code-2021" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/qdozaq/advent-of-code-2021 on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/qdozaq/advent-of-code-2021
[INFO] finished tweaking git repo https://github.com/qdozaq/advent-of-code-2021
[INFO] tweaked toml for git repo https://github.com/qdozaq/advent-of-code-2021 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/qdozaq/advent-of-code-2021 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" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking qdozaq/advent-of-code-2021 against try#7622c0f807a4e13c4db886a1681bf343795692df+rustflags=-Dnon_local_definitions for pr-120393
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqdozaq%2Fadvent-of-code-2021" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/qdozaq/advent-of-code-2021 on toolchain 7622c0f807a4e13c4db886a1681bf343795692df
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7622c0f807a4e13c4db886a1681bf343795692df" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/qdozaq/advent-of-code-2021
[INFO] finished tweaking git repo https://github.com/qdozaq/advent-of-code-2021
[INFO] tweaked toml for git repo https://github.com/qdozaq/advent-of-code-2021 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/qdozaq/advent-of-code-2021 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" "+7622c0f807a4e13c4db886a1681bf343795692df" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+7622c0f807a4e13c4db886a1681bf343795692df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c60d7f6de9e9fa9c737d2067929392cc5a17aaeb678dd35064fc8b1f4e5a8be
[INFO] running `Command { std: "docker" "start" "-a" "6c60d7f6de9e9fa9c737d2067929392cc5a17aaeb678dd35064fc8b1f4e5a8be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c60d7f6de9e9fa9c737d2067929392cc5a17aaeb678dd35064fc8b1f4e5a8be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c60d7f6de9e9fa9c737d2067929392cc5a17aaeb678dd35064fc8b1f4e5a8be", kill_on_drop: false }`
[INFO] [stdout] 6c60d7f6de9e9fa9c737d2067929392cc5a17aaeb678dd35064fc8b1f4e5a8be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dnon_local_definitions" "-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" "+7622c0f807a4e13c4db886a1681bf343795692df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60a03ad5c50af74fb0fbf339b0b41b8642189ab0e8a693c2a3d8bedb4e95a940
[INFO] running `Command { std: "docker" "start" "-a" "60a03ad5c50af74fb0fbf339b0b41b8642189ab0e8a693c2a3d8bedb4e95a940", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking fixedbitset v0.4.0
[INFO] [stderr]     Checking day_11 v0.1.0 (/opt/rustwide/workdir/day_11)
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking day_2 v0.1.0 (/opt/rustwide/workdir/day_2)
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking day_17 v0.1.0 (/opt/rustwide/workdir/day_17)
[INFO] [stdout] warning: unused variable: `flashes`
[INFO] [stdout]    --> day_11/src/main.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let mut flashes = 0;
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_flashes`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flashes`
[INFO] [stdout]    --> day_11/src/main.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let mut flashes = 0;
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_flashes`
[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]    --> day_11/src/main.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let mut flashes = 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]    --> day_11/src/main.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let mut flashes = 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: function `print_map` is never used
[INFO] [stdout]    --> day_11/src/main.rs:126:4
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn print_map(map: &[u32]) {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_map` is never used
[INFO] [stdout]    --> day_11/src/main.rs:126:4
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn print_map(map: &[u32]) {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day_6 v0.1.0 (/opt/rustwide/workdir/day_6)
[INFO] [stderr]     Checking day_21 v0.1.0 (/opt/rustwide/workdir/day_21)
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stdout] warning: unused variable: `steps`
[INFO] [stdout]   --> day_17/src/main.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let steps = vx;
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_steps`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> day_21/src/main.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                                 ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `min_vx` is never used
[INFO] [stdout]   --> day_17/src/main.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn min_vx(range: &RangeInclusive<i32>) -> i32 {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `star_one` is never used
[INFO] [stdout]   --> day_17/src/main.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn star_one(x_range: &RangeInclusive<i32>, y_range: &RangeInclusive<i32>) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1_start`
[INFO] [stdout]   --> day_21/src/main.rs:63:10
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let (p1_start, p2_start) = (3, 7);
[INFO] [stdout]    |          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_p1_start`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2_start`
[INFO] [stdout]   --> day_21/src/main.rs:63:20
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let (p1_start, p2_start) = (3, 7);
[INFO] [stdout]    |                    ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_p2_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `movesets`
[INFO] [stdout]   --> day_21/src/main.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let movesets = turn_outcomes();
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_movesets`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SIDES` is never used
[INFO] [stdout]  --> day_21/src/main.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const SIDES: usize = 100;
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BOARD_SIZE` is never used
[INFO] [stdout]  --> day_21/src/main.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const BOARD_SIZE: usize = 10;
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `star_one` is never used
[INFO] [stdout]   --> day_21/src/main.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn star_one() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `roll` is never used
[INFO] [stdout]   --> day_21/src/main.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn roll(die: usize) -> usize {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day_4 v0.1.0 (/opt/rustwide/workdir/day_4)
[INFO] [stderr]     Checking day_1 v0.1.0 (/opt/rustwide/workdir/day_1)
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day_7 v0.1.0 (/opt/rustwide/workdir/day_7)
[INFO] [stderr]     Checking day_10 v0.1.0 (/opt/rustwide/workdir/day_10)
[INFO] [stdout] warning: unused import: `std::fmt::Result`
[INFO] [stdout]  --> day_4/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day_9 v0.1.0 (/opt/rustwide/workdir/day_9)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> day_4/src/main.rs:74:25
[INFO] [stdout]    |
[INFO] [stdout] 74 |                     let mut line = line.chars().filter(|l| *l != '\n').collect::<String>();
[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: method `callNum` should have a snake case name
[INFO] [stdout]   --> day_4/src/main.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn callNum(&mut self, called_number: isize) -> bool {
[INFO] [stdout]    |        ^^^^^^^ help: convert the identifier to snake case: `call_num`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day_3 v0.1.0 (/opt/rustwide/workdir/day_3)
[INFO] [stdout] error[E0423]: expected value, found enum `Infallible`
[INFO] [stdout]   --> day_10/src/main.rs:43:28
[INFO] [stdout]    |
[INFO] [stdout] 43 |                 return Err(Infallible);
[INFO] [stdout]    |                            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `collections::VecDeque`
[INFO] [stdout]  --> day_10/src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::VecDeque, convert::Infallible, string::ParseError};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> day_10/src/main.rs:47:27
[INFO] [stdout]    |
[INFO] [stdout] 47 |         if pairs.contains(close_stack.last().unwrap()) {}
[INFO] [stdout]    |                  -------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `&(char, char)`, found `&char`
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  arguments to this method are incorrect
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected reference `&(char, char)`
[INFO] [stdout]               found reference `&char`
[INFO] [stdout] note: method defined here
[INFO] [stdout]   --> /rustc/7622c0f807a4e13c4db886a1681bf343795692df/library/core/src/slice/mod.rs:2509:12
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0423.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `day_10` (bin "day_10" test) due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> day_3/src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     star_one(&lines);
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let _ = star_one(&lines);
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> day_3/src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     star_two(&lines);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let _ = star_two(&lines);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "60a03ad5c50af74fb0fbf339b0b41b8642189ab0e8a693c2a3d8bedb4e95a940", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60a03ad5c50af74fb0fbf339b0b41b8642189ab0e8a693c2a3d8bedb4e95a940", kill_on_drop: false }`
[INFO] [stdout] 60a03ad5c50af74fb0fbf339b0b41b8642189ab0e8a693c2a3d8bedb4e95a940