[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 beta-2021-09-08 for beta-1.56-1
[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 beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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" "+beta-2021-09-08" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f5f7a3a46fba9a4c2fe77028f2f00a365d166c709f69e9c02bc356b4ad14f977
[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" "f5f7a3a46fba9a4c2fe77028f2f00a365d166c709f69e9c02bc356b4ad14f977", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5f7a3a46fba9a4c2fe77028f2f00a365d166c709f69e9c02bc356b4ad14f977", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5f7a3a46fba9a4c2fe77028f2f00a365d166c709f69e9c02bc356b4ad14f977", kill_on_drop: false }`
[INFO] [stdout] f5f7a3a46fba9a4c2fe77028f2f00a365d166c709f69e9c02bc356b4ad14f977
[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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "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] fe69d863094d0861324a58bd14b9dc7889de551aa6b4c54162bc2b7da10d89fe
[INFO] running `Command { std: "docker" "start" "-a" "fe69d863094d0861324a58bd14b9dc7889de551aa6b4c54162bc2b7da10d89fe", kill_on_drop: false }`
[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 4.05s
[INFO] running `Command { std: "docker" "inspect" "fe69d863094d0861324a58bd14b9dc7889de551aa6b4c54162bc2b7da10d89fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe69d863094d0861324a58bd14b9dc7889de551aa6b4c54162bc2b7da10d89fe", kill_on_drop: false }`
[INFO] [stdout] fe69d863094d0861324a58bd14b9dc7889de551aa6b4c54162bc2b7da10d89fe
[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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--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] 8cbbd1ee6769b5ae15683735da087c203a9177603b5299e859796dd7773c907d
[INFO] running `Command { std: "docker" "start" "-a" "8cbbd1ee6769b5ae15683735da087c203a9177603b5299e859796dd7773c907d", 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 2.69s
[INFO] running `Command { std: "docker" "inspect" "8cbbd1ee6769b5ae15683735da087c203a9177603b5299e859796dd7773c907d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cbbd1ee6769b5ae15683735da087c203a9177603b5299e859796dd7773c907d", kill_on_drop: false }`
[INFO] [stdout] 8cbbd1ee6769b5ae15683735da087c203a9177603b5299e859796dd7773c907d
[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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", 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] 7ef154616b60bbceabfd078485625ff8ee11ab3782a7f2a8036917c0f7f2136e
[INFO] running `Command { std: "docker" "start" "-a" "7ef154616b60bbceabfd078485625ff8ee11ab3782a7f2a8036917c0f7f2136e", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `HashMap`
[INFO] [stdout] 
[INFO] [stderr]  --> src/day8.rs:1:24
[INFO] [stdout] running 15 tests
[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: `advent_of_code` (bin "advent_of_code" test) generated 12 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/advent_of_code-c95b76f221876fbc)
[INFO] [stdout] test day8::test_example ... ok
[INFO] [stdout] test day7::test ... ok
[INFO] [stdout] test day1::test_part1 ... ok
[INFO] [stdout] test day4::test_part2 ... ok
[INFO] [stdout] test day5::test_part1 ... ok
[INFO] [stdout] test day4::test_part1 ... ok
[INFO] [stdout] test day4::test ... ok
[INFO] [stdout] test day3::test_part1 ... ok
[INFO] [stdout] test day3::test_part2 ... ok
[INFO] [stdout] test day5::test_part2 ... ok
[INFO] [stdout] test day6::test_part1 ... ok
[INFO] [stdout] test day2::test_part1 ... ok
[INFO] [stdout] test day2::test_part2 ... ok
[INFO] [stdout] test day6::test_part ... ok
[INFO] [stdout] test day1::test_part2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.50s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7ef154616b60bbceabfd078485625ff8ee11ab3782a7f2a8036917c0f7f2136e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ef154616b60bbceabfd078485625ff8ee11ab3782a7f2a8036917c0f7f2136e", kill_on_drop: false }`
[INFO] [stdout] 7ef154616b60bbceabfd078485625ff8ee11ab3782a7f2a8036917c0f7f2136e