[INFO] cloning repository https://github.com/niclaslind/AdventOfCode2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/niclaslind/AdventOfCode2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fniclaslind%2FAdventOfCode2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fniclaslind%2FAdventOfCode2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d1203c194da17daa14e92b524cd458779a31af98
[INFO] testing niclaslind/AdventOfCode2020 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fniclaslind%2FAdventOfCode2020" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/niclaslind/AdventOfCode2020 on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/niclaslind/AdventOfCode2020
[INFO] finished tweaking git repo https://github.com/niclaslind/AdventOfCode2020
[INFO] tweaked toml for git repo https://github.com/niclaslind/AdventOfCode2020 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/niclaslind/AdventOfCode2020 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db8afffef8ff712a8eaede5ee3d21fbc82a9a2bfde7824f695c2e92d20f17956
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "db8afffef8ff712a8eaede5ee3d21fbc82a9a2bfde7824f695c2e92d20f17956", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db8afffef8ff712a8eaede5ee3d21fbc82a9a2bfde7824f695c2e92d20f17956", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db8afffef8ff712a8eaede5ee3d21fbc82a9a2bfde7824f695c2e92d20f17956", kill_on_drop: false }`
[INFO] [stdout] db8afffef8ff712a8eaede5ee3d21fbc82a9a2bfde7824f695c2e92d20f17956
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6671164b7cc0c10aaf2d1ca2786dc2f5a294bd8c38c2d4c993d7588942d0974d
[INFO] running `Command { std: "docker" "start" "-a" "6671164b7cc0c10aaf2d1ca2786dc2f5a294bd8c38c2d4c993d7588942d0974d", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling scan_fmt v0.2.5
[INFO] [stderr]    Compiling advent_of_code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> src/day8.rs:1:24
[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: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/day8.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem::replace`
[INFO] [stdout]  --> src/day8.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::mem::replace;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/day8.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> src/day8.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `instructions`
[INFO] [stdout]   --> src/day8.rs:93:14
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn part2(mut instructions: Vec<Instruction>) -> i32 {
[INFO] [stdout]    |              ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_instructions`
[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/day8.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut instructions = parse_instructions(include_str!("input/day8.txt"));
[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/day8.rs:86:10
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn part1(mut instructions: Vec<Instruction>) -> i32 {
[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/day8.rs:93:10
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn part2(mut instructions: Vec<Instruction>) -> i32 {
[INFO] [stdout]    |          ----^^^^^^^^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `convert_instruction`
[INFO] [stdout]    --> src/day8.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn convert_instruction(instruction: Instruction) -> Instruction {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.27s
[INFO] running `Command { std: "docker" "inspect" "6671164b7cc0c10aaf2d1ca2786dc2f5a294bd8c38c2d4c993d7588942d0974d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6671164b7cc0c10aaf2d1ca2786dc2f5a294bd8c38c2d4c993d7588942d0974d", kill_on_drop: false }`
[INFO] [stdout] 6671164b7cc0c10aaf2d1ca2786dc2f5a294bd8c38c2d4c993d7588942d0974d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e18f2ff29840ad5cc711abd755bae7513daea78b4dd3298db2082f75a10ea6e0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e18f2ff29840ad5cc711abd755bae7513daea78b4dd3298db2082f75a10ea6e0", kill_on_drop: false }`
[INFO] [stderr]    Compiling advent_of_code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> src/day8.rs:1:24
[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: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/day8.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem::replace`
[INFO] [stdout]  --> src/day8.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::mem::replace;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/day8.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> src/day8.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `instructions`
[INFO] [stdout]   --> src/day8.rs:93:14
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn part2(mut instructions: Vec<Instruction>) -> i32 {
[INFO] [stdout]    |              ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_instructions`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `instructions`
[INFO] [stdout]    --> src/day8.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |     let mut instructions =
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_instructions`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/day8.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut instructions = parse_instructions(include_str!("input/day8.txt"));
[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/day8.rs:86:10
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn part1(mut instructions: Vec<Instruction>) -> i32 {
[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/day8.rs:93:10
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn part2(mut instructions: Vec<Instruction>) -> i32 {
[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/day8.rs:115:9
[INFO] [stdout]     |
[INFO] [stdout] 115 |     let mut instructions =
[INFO] [stdout]     |         ----^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `convert_instruction`
[INFO] [stdout]    --> src/day8.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn convert_instruction(instruction: Instruction) -> Instruction {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.82s
[INFO] running `Command { std: "docker" "inspect" "e18f2ff29840ad5cc711abd755bae7513daea78b4dd3298db2082f75a10ea6e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e18f2ff29840ad5cc711abd755bae7513daea78b4dd3298db2082f75a10ea6e0", kill_on_drop: false }`
[INFO] [stdout] e18f2ff29840ad5cc711abd755bae7513daea78b4dd3298db2082f75a10ea6e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3d1ec82af62ea392e4250f50c333d481f4d770eea3a95961b8ccfa1dccfc2856
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3d1ec82af62ea392e4250f50c333d481f4d770eea3a95961b8ccfa1dccfc2856", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `HashMap`
[INFO] [stderr]  --> src/day8.rs:1:24
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::{HashMap, HashSet};
[INFO] [stderr]   |                        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Index`
[INFO] [stderr]  --> src/day8.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::ops::Index;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::mem::replace`
[INFO] [stderr]  --> src/day8.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::mem::replace;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/day8.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `itertools::Itertools`
[INFO] [stderr]  --> src/day8.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use itertools::Itertools;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `instructions`
[INFO] [stderr]   --> src/day8.rs:93:14
[INFO] [stderr]    |
[INFO] [stderr] 93 | fn part2(mut instructions: Vec<Instruction>) -> i32 {
[INFO] [stderr]    |              ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_instructions`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `instructions`
[INFO] [stderr]    --> src/day8.rs:115:13
[INFO] [stderr]     |
[INFO] [stderr] 115 |     let mut instructions =
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_instructions`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/day8.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let mut instructions = parse_instructions(include_str!("input/day8.txt"));
[INFO] [stderr]   |         ----^^^^^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day8.rs:86:10
[INFO] [stderr]    |
[INFO] [stderr] 86 | fn part1(mut instructions: Vec<Instruction>) -> i32 {
[INFO] [stderr]    |          ----^^^^^^^^^^^^
[INFO] [stderr]    |          |
[INFO] [stderr]    |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day8.rs:93:10
[INFO] [stderr]    |
[INFO] [stderr] 93 | fn part2(mut instructions: Vec<Instruction>) -> i32 {
[INFO] [stderr]    |          ----^^^^^^^^^^^^
[INFO] [stderr]    |          |
[INFO] [stderr]    |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/day8.rs:115:9
[INFO] [stderr]     |
[INFO] [stderr] 115 |     let mut instructions =
[INFO] [stderr]     |         ----^^^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `convert_instruction`
[INFO] [stderr]    --> src/day8.rs:105:4
[INFO] [stderr]     |
[INFO] [stderr] 105 | fn convert_instruction(instruction: Instruction) -> Instruction {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/advent_of_code-0855eeeb7a9c1d1a)
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test day8::test_example ... ok
[INFO] [stdout] test day7::test ... ok
[INFO] [stdout] test day1::test_part1 ... ok
[INFO] [stdout] test day6::test_part1 ... ok
[INFO] [stdout] test day4::test ... ok
[INFO] [stdout] test day4::test_part1 ... ok
[INFO] [stdout] test day5::test_part2 ... ok
[INFO] [stdout] test day4::test_part2 ... ok
[INFO] [stdout] test day3::test_part1 ... ok
[INFO] [stdout] test day5::test_part1 ... ok
[INFO] [stdout] test day3::test_part2 ... ok
[INFO] [stdout] test day2::test_part1 ... ok
[INFO] [stdout] test day2::test_part2 ... ok
[INFO] [stdout] test day1::test_part2 ... ok
[INFO] [stdout] test day6::test_part ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.23s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3d1ec82af62ea392e4250f50c333d481f4d770eea3a95961b8ccfa1dccfc2856", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d1ec82af62ea392e4250f50c333d481f4d770eea3a95961b8ccfa1dccfc2856", kill_on_drop: false }`
[INFO] [stdout] 3d1ec82af62ea392e4250f50c333d481f4d770eea3a95961b8ccfa1dccfc2856