[INFO] updating cached repository https://github.com/y6nH/aoc2018
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d2cfacfebdd6184dbaa69ce647d86fcf189e2267
[INFO] testing y6nH/aoc2018 against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fy6nH%2Faoc2018" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/y6nH/aoc2018 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/y6nH/aoc2018
[INFO] finished tweaking git repo https://github.com/y6nH/aoc2018
[INFO] tweaked toml for git repo https://github.com/y6nH/aoc2018 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/y6nH/aoc2018 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] aa84f08a6dd1cdb194b40ae15804c5ba51f01e3283de2a4f761a880e06dd804f
[INFO] running `"docker" "start" "-a" "aa84f08a6dd1cdb194b40ae15804c5ba51f01e3283de2a4f761a880e06dd804f"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling time v0.1.41
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling aoc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `coords`
[INFO] [stderr]   --> src/day6.rs:58:17
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn find_closest(coords: &Vec<(usize, usize)>, target: &(usize, usize)) -> usize {
[INFO] [stderr]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_coords`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `target`
[INFO] [stderr]   --> src/day6.rs:58:47
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn find_closest(coords: &Vec<(usize, usize)>, target: &(usize, usize)) -> usize {
[INFO] [stderr]    |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day1.rs:21:11
[INFO] [stderr]    |
[INFO] [stderr] 21 |       for mut line in split {
[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/day1.rs:53:13
[INFO] [stderr]    |
[INFO] [stderr] 53 |         for mut line in split {
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/day1.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn a() {
[INFO] [stderr]   |        ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/day1.rs:35:8
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub fn b() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/day2.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn a() {
[INFO] [stderr]   |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/day2.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub fn b() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `only_one_difference`
[INFO] [stderr]   --> src/day2.rs:57:4
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn only_one_difference(s1: &str, s2: &str) -> bool {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/day3.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn a() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `check_claim`
[INFO] [stderr]   --> src/day3.rs:59:4
[INFO] [stderr]    |
[INFO] [stderr] 59 | fn check_claim(
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/day4.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn a() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/day5.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn a() {
[INFO] [stderr]   |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/day5.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub fn b() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `collapse_bytes`
[INFO] [stderr]   --> src/day5.rs:37:4
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn collapse_bytes(bytes: &Vec<u8>) -> Vec<u8> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `collapse_bytes_loop`
[INFO] [stderr]   --> src/day5.rs:72:4
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn collapse_bytes_loop(bytes: Vec<u8>) -> Vec<u8> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/day6.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn a() {
[INFO] [stderr]   |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_coords`
[INFO] [stderr]   --> src/day6.rs:45:4
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn get_coords() -> Vec<(usize, usize)> {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_closest`
[INFO] [stderr]   --> src/day6.rs:58:4
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn find_closest(coords: &Vec<(usize, usize)>, target: &(usize, usize)) -> usize {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.24s
[INFO] running `"docker" "inspect" "aa84f08a6dd1cdb194b40ae15804c5ba51f01e3283de2a4f761a880e06dd804f"`
[INFO] running `"docker" "rm" "-f" "aa84f08a6dd1cdb194b40ae15804c5ba51f01e3283de2a4f761a880e06dd804f"`
[INFO] [stdout] aa84f08a6dd1cdb194b40ae15804c5ba51f01e3283de2a4f761a880e06dd804f
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stdout] debbfcaf1022b0685ba470cf4663002beb148ac235564fa78aa71477c67c9404
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "debbfcaf1022b0685ba470cf4663002beb148ac235564fa78aa71477c67c9404"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling aoc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `coords`
[INFO] [stderr]   --> src/day6.rs:58:17
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn find_closest(coords: &Vec<(usize, usize)>, target: &(usize, usize)) -> usize {
[INFO] [stderr]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_coords`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `target`
[INFO] [stderr]   --> src/day6.rs:58:47
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn find_closest(coords: &Vec<(usize, usize)>, target: &(usize, usize)) -> usize {
[INFO] [stderr]    |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day1.rs:21:11
[INFO] [stderr]    |
[INFO] [stderr] 21 |       for mut line in split {
[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/day1.rs:53:13
[INFO] [stderr]    |
[INFO] [stderr] 53 |         for mut line in split {
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/day1.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn a() {
[INFO] [stderr]   |        ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/day1.rs:35:8
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub fn b() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/day2.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn a() {
[INFO] [stderr]   |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/day2.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub fn b() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `only_one_difference`
[INFO] [stderr]   --> src/day2.rs:57:4
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn only_one_difference(s1: &str, s2: &str) -> bool {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/day3.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn a() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `check_claim`
[INFO] [stderr]   --> src/day3.rs:59:4
[INFO] [stderr]    |
[INFO] [stderr] 59 | fn check_claim(
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/day4.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn a() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/day5.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn a() {
[INFO] [stderr]   |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/day5.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub fn b() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `collapse_bytes`
[INFO] [stderr]   --> src/day5.rs:37:4
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn collapse_bytes(bytes: &Vec<u8>) -> Vec<u8> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `collapse_bytes_loop`
[INFO] [stderr]   --> src/day5.rs:72:4
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn collapse_bytes_loop(bytes: Vec<u8>) -> Vec<u8> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/day6.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn a() {
[INFO] [stderr]   |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_coords`
[INFO] [stderr]   --> src/day6.rs:45:4
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn get_coords() -> Vec<(usize, usize)> {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_closest`
[INFO] [stderr]   --> src/day6.rs:58:4
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn find_closest(coords: &Vec<(usize, usize)>, target: &(usize, usize)) -> usize {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.46s
[INFO] running `"docker" "inspect" "debbfcaf1022b0685ba470cf4663002beb148ac235564fa78aa71477c67c9404"`
[INFO] running `"docker" "rm" "-f" "debbfcaf1022b0685ba470cf4663002beb148ac235564fa78aa71477c67c9404"`
[INFO] [stdout] debbfcaf1022b0685ba470cf4663002beb148ac235564fa78aa71477c67c9404
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] eac5c308decf88c43294f93311ac3fd5c673130a7ac064c2724dc63011f7392d
[INFO] running `"docker" "start" "-a" "eac5c308decf88c43294f93311ac3fd5c673130a7ac064c2724dc63011f7392d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused variable: `coords`
[INFO] [stderr]   --> src/day6.rs:58:17
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn find_closest(coords: &Vec<(usize, usize)>, target: &(usize, usize)) -> usize {
[INFO] [stderr]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_coords`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `target`
[INFO] [stderr]   --> src/day6.rs:58:47
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn find_closest(coords: &Vec<(usize, usize)>, target: &(usize, usize)) -> usize {
[INFO] [stderr]    |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day1.rs:21:11
[INFO] [stderr]    |
[INFO] [stderr] 21 |       for mut line in split {
[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/day1.rs:53:13
[INFO] [stderr]    |
[INFO] [stderr] 53 |         for mut line in split {
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/day1.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn a() {
[INFO] [stderr]   |        ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/day1.rs:35:8
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub fn b() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/day2.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn a() {
[INFO] [stderr]   |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/day2.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub fn b() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `only_one_difference`
[INFO] [stderr]   --> src/day2.rs:57:4
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn only_one_difference(s1: &str, s2: &str) -> bool {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/day3.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn a() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `check_claim`
[INFO] [stderr]   --> src/day3.rs:59:4
[INFO] [stderr]    |
[INFO] [stderr] 59 | fn check_claim(
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/day4.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn a() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/day5.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn a() {
[INFO] [stderr]   |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/day5.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub fn b() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `collapse_bytes`
[INFO] [stderr]   --> src/day5.rs:37:4
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn collapse_bytes(bytes: &Vec<u8>) -> Vec<u8> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `collapse_bytes_loop`
[INFO] [stderr]   --> src/day5.rs:72:4
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn collapse_bytes_loop(bytes: Vec<u8>) -> Vec<u8> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/day6.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn a() {
[INFO] [stderr]   |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_coords`
[INFO] [stderr]   --> src/day6.rs:45:4
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn get_coords() -> Vec<(usize, usize)> {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_closest`
[INFO] [stderr]   --> src/day6.rs:58:4
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn find_closest(coords: &Vec<(usize, usize)>, target: &(usize, usize)) -> usize {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/aoc-64c348850d18a47f
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "eac5c308decf88c43294f93311ac3fd5c673130a7ac064c2724dc63011f7392d"`
[INFO] running `"docker" "rm" "-f" "eac5c308decf88c43294f93311ac3fd5c673130a7ac064c2724dc63011f7392d"`
[INFO] [stdout] eac5c308decf88c43294f93311ac3fd5c673130a7ac064c2724dc63011f7392d