[INFO] cloning repository https://github.com/kopackiw/advent-urous-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kopackiw/advent-urous-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkopackiw%2Fadvent-urous-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkopackiw%2Fadvent-urous-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2df7349591f4448b30886e0823687d77965c718c
[INFO] checking kopackiw/advent-urous-rust against try#446cb600aa4837dd6c513f14fa0d25a909b177d7 for pr-149195
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkopackiw%2Fadvent-urous-rust" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kopackiw/advent-urous-rust
[INFO] finished tweaking git repo https://github.com/kopackiw/advent-urous-rust
[INFO] tweaked toml for git repo https://github.com/kopackiw/advent-urous-rust written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kopackiw/advent-urous-rust on toolchain 446cb600aa4837dd6c513f14fa0d25a909b177d7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kopackiw/advent-urous-rust 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" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking kopackiw/advent-urous-rust against try#446cb600aa4837dd6c513f14fa0d25a909b177d7 for pr-149195
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkopackiw%2Fadvent-urous-rust" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kopackiw/advent-urous-rust
[INFO] finished tweaking git repo https://github.com/kopackiw/advent-urous-rust
[INFO] tweaked toml for git repo https://github.com/kopackiw/advent-urous-rust written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kopackiw/advent-urous-rust on toolchain 446cb600aa4837dd6c513f14fa0d25a909b177d7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kopackiw/advent-urous-rust 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" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fancy-regex v0.10.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bcc67a8ed123694f458e943724f6f461c9b86877d9b27ed0b71a7175ccaf4c86
[INFO] running `Command { std: "docker" "start" "-a" "bcc67a8ed123694f458e943724f6f461c9b86877d9b27ed0b71a7175ccaf4c86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcc67a8ed123694f458e943724f6f461c9b86877d9b27ed0b71a7175ccaf4c86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcc67a8ed123694f458e943724f6f461c9b86877d9b27ed0b71a7175ccaf4c86", kill_on_drop: false }`
[INFO] [stdout] bcc67a8ed123694f458e943724f6f461c9b86877d9b27ed0b71a7175ccaf4c86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 69b3de053deebedcc83a57c5dce5920cc9bb19da5c9fb4b2900abdb716808e42
[INFO] running `Command { std: "docker" "start" "-a" "69b3de053deebedcc83a57c5dce5920cc9bb19da5c9fb4b2900abdb716808e42", kill_on_drop: false }`
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking either v1.7.0
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking fancy-regex v0.10.0
[INFO] [stderr]     Checking advent-urous-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `solve` is never used
[INFO] [stdout]   --> src/year_2015/day_05.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn solve(f: fn(&str) -> bool, s: &str) -> usize {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_a` is never used
[INFO] [stdout]   --> src/year_2015/day_05.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn solve_a(s: &str) -> usize {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_b` is never used
[INFO] [stdout]   --> src/year_2015/day_05.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn solve_b(s: &str) -> usize {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Direction` is never used
[INFO] [stdout]  --> src/year_2015/day_01.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Direction {
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `char_to_direction` is never used
[INFO] [stdout]  --> src/year_2015/day_01.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn char_to_direction(c: char) -> Option<Direction> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `next_floor` is never used
[INFO] [stdout]   --> src/year_2015/day_01.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn next_floor(floor: isize, direction: Direction) -> isize {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_a` is never used
[INFO] [stdout]   --> src/year_2015/day_01.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn solve_a(text: &str) -> isize {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_b` is never used
[INFO] [stdout]   --> src/year_2015/day_01.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn solve_b(text: &str) -> Option<usize> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PresentParsingError` is never constructed
[INFO] [stdout]  --> src/year_2015/day_02.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct PresentParsingError(String);
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Present` is never constructed
[INFO] [stdout]   --> src/year_2015/day_02.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Present {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `areas` is never used
[INFO] [stdout]   --> src/year_2015/day_02.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl Present {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 36 |     fn areas(&self) -> [usize; 3] {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `slack_for_present` is never used
[INFO] [stdout]   --> src/year_2015/day_02.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn slack_for_present(present: Present) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ribbon_for_present` is never used
[INFO] [stdout]   --> src/year_2015/day_02.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn ribbon_for_present(present: Present) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve` is never used
[INFO] [stdout]   --> src/year_2015/day_02.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn solve(map_with: fn(Present) -> usize, s: &str) -> Result<usize, PresentParsingError> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_a` is never used
[INFO] [stdout]   --> src/year_2015/day_02.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn solve_a(s: &str) -> Result<usize, PresentParsingError> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_b` is never used
[INFO] [stdout]   --> src/year_2015/day_02.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn solve_b(s: &str) -> Result<usize, PresentParsingError> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Move` is never used
[INFO] [stdout]  --> src/year_2015/day_03.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum Move {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Coordinates` is never used
[INFO] [stdout]  --> src/year_2015/day_03.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | type Coordinates = (isize, isize);
[INFO] [stdout]   |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_move` is never used
[INFO] [stdout]   --> src/year_2015/day_03.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn to_move(c: char) -> Option<Move> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `on_move` is never used
[INFO] [stdout]   --> src/year_2015/day_03.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn on_move(m: Move, c: Coordinates) -> Coordinates {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve` is never used
[INFO] [stdout]   --> src/year_2015/day_03.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn solve(s: &str) -> HashSet<Coordinates> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_a` is never used
[INFO] [stdout]   --> src/year_2015/day_03.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn solve_a(s: &str) -> usize {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_b` is never used
[INFO] [stdout]   --> src/year_2015/day_03.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn solve_b(s: &str) -> usize {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_a` is never used
[INFO] [stdout]  --> src/year_2015/day_04.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn solve_a(key: &str) -> Option<usize> {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_b` is never used
[INFO] [stdout]   --> src/year_2015/day_04.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn solve_b(key: &str) -> Option<usize> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_nice_a` is never used
[INFO] [stdout]  --> src/year_2015/day_05.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn is_nice_a(s: &str) -> bool {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_nice_b` is never used
[INFO] [stdout]   --> src/year_2015/day_05.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn is_nice_b(s: &str) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve` is never used
[INFO] [stdout]   --> src/year_2015/day_05.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn solve(f: fn(&str) -> bool, s: &str) -> usize {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_a` is never used
[INFO] [stdout]   --> src/year_2015/day_05.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn solve_a(s: &str) -> usize {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_b` is never used
[INFO] [stdout]   --> src/year_2015/day_05.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn solve_b(s: &str) -> usize {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Board` is never used
[INFO] [stdout]  --> src/year_2015/day_06.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | type Board = Vec<Vec<usize>>;
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Coordinates` is never used
[INFO] [stdout]  --> src/year_2015/day_06.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Coordinates = (usize, usize);
[INFO] [stdout]   |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Command` is never constructed
[INFO] [stdout]  --> src/year_2015/day_06.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Command {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `CommandType` is never used
[INFO] [stdout]   --> src/year_2015/day_06.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum CommandType {
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_coordinates` is never used
[INFO] [stdout]   --> src/year_2015/day_06.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn parse_coordinates(s: &str) -> Coordinates {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_command` is never used
[INFO] [stdout]   --> src/year_2015/day_06.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn parse_command(command_type: &str, from: &str, to: &str) -> Option<Command> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse` is never used
[INFO] [stdout]   --> src/year_2015/day_06.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn parse(s: &str) -> Option<Command> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_values` is never used
[INFO] [stdout]   --> src/year_2015/day_06.rs:67:4
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn set_values(
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve` is never used
[INFO] [stdout]   --> src/year_2015/day_06.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn solve(command_mapping_strategy: fn(&CommandType) -> fn(usize) -> usize, s: &str) -> usize {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `command_mapping_strategy_a` is never used
[INFO] [stdout]   --> src/year_2015/day_06.rs:94:4
[INFO] [stdout]    |
[INFO] [stdout] 94 | fn command_mapping_strategy_a(command_type: &CommandType) -> fn(usize) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_a` is never used
[INFO] [stdout]    --> src/year_2015/day_06.rs:102:4
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn solve_a(s: &str) -> usize {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `command_mapping_strategy_b` is never used
[INFO] [stdout]    --> src/year_2015/day_06.rs:106:4
[INFO] [stdout]     |
[INFO] [stdout] 106 | fn command_mapping_strategy_b(command_type: &CommandType) -> fn(usize) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_b` is never used
[INFO] [stdout]    --> src/year_2015/day_06.rs:114:4
[INFO] [stdout]     |
[INFO] [stdout] 114 | fn solve_b(s: &str) -> usize {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.61s
[INFO] running `Command { std: "docker" "inspect" "69b3de053deebedcc83a57c5dce5920cc9bb19da5c9fb4b2900abdb716808e42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69b3de053deebedcc83a57c5dce5920cc9bb19da5c9fb4b2900abdb716808e42", kill_on_drop: false }`
[INFO] [stdout] 69b3de053deebedcc83a57c5dce5920cc9bb19da5c9fb4b2900abdb716808e42
