[INFO] cloning repository https://github.com/jameshc2001/aoc_2017_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jameshc2001/aoc_2017_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjameshc2001%2Faoc_2017_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjameshc2001%2Faoc_2017_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b2207ba75148f5fcd818ba26c40084572afbfe8b
[INFO] testing jameshc2001/aoc_2017_rust against try#a7ce54db9b096bd1098d07c645b489195a667c9f for pr-137940-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjameshc2001%2Faoc_2017_rust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jameshc2001/aoc_2017_rust on toolchain a7ce54db9b096bd1098d07c645b489195a667c9f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jameshc2001/aoc_2017_rust
[INFO] finished tweaking git repo https://github.com/jameshc2001/aoc_2017_rust
[INFO] tweaked toml for git repo https://github.com/jameshc2001/aoc_2017_rust written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jameshc2001/aoc_2017_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" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93f4c4a9cbb428b66d8c2a1a4b112c78faac8afbdac73fc7563bf4b3ce274694
[INFO] running `Command { std: "docker" "start" "-a" "93f4c4a9cbb428b66d8c2a1a4b112c78faac8afbdac73fc7563bf4b3ce274694", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93f4c4a9cbb428b66d8c2a1a4b112c78faac8afbdac73fc7563bf4b3ce274694", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93f4c4a9cbb428b66d8c2a1a4b112c78faac8afbdac73fc7563bf4b3ce274694", kill_on_drop: false }`
[INFO] [stdout] 93f4c4a9cbb428b66d8c2a1a4b112c78faac8afbdac73fc7563bf4b3ce274694
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 13017957d8ca21b967c868960b9cd13387aad065824f0c580a34d8f2261b7f35
[INFO] running `Command { std: "docker" "start" "-a" "13017957d8ca21b967c868960b9cd13387aad065824f0c580a34d8f2261b7f35", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling regex-automata v0.4.8
[INFO] [stderr]    Compiling regex v1.11.0
[INFO] [stderr]    Compiling aoc_2017 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `captcha_sum` is never used
[INFO] [stdout]  --> src/day01.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn captcha_sum(input: &str) -> u32 {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `half_way_captcha_sum` is never used
[INFO] [stdout]  --> src/day01.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn half_way_captcha_sum(input: &str) -> u32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `captcha_sum_for_interval` is never used
[INFO] [stdout]   --> src/day01.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn captcha_sum_for_interval(input: &str, half_len: usize) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `checksum` is never used
[INFO] [stdout]  --> src/day02.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn checksum<F>(input: &str, method: F) -> i32
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_line` is never used
[INFO] [stdout]   --> src/day02.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn parse_line(line: &str) -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `min_max_difference_checksum` is never used
[INFO] [stdout]   --> src/day02.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn min_max_difference_checksum(input: &str) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `division_checksum` is never used
[INFO] [stdout]   --> src/day02.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn division_checksum(input: &str) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `distance_to_access_port` is never used
[INFO] [stdout]  --> src/day03.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn distance_to_access_port(target_num: i32) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `next_largest` is never used
[INFO] [stdout]   --> src/day03.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn next_largest(target_num: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_num_from_neighbours` is never used
[INFO] [stdout]   --> src/day03.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn get_num_from_neighbours(grid: &HashMap<Coord2D, i32>, location: &Coord2D) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ORIGIN` is never used
[INFO] [stdout]  --> src/shared/coord_2d.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub const ORIGIN: Coord2D = Coord2D { x: 0, y: 0 };
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LEFT` is never used
[INFO] [stdout]   --> src/shared/coord_2d.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub const LEFT: Coord2D = Coord2D { x: -1, y: 0 };
[INFO] [stdout]    |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RIGHT` is never used
[INFO] [stdout]   --> src/shared/coord_2d.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub const RIGHT: Coord2D = Coord2D { x: 1, y: 0 };
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `UP` is never used
[INFO] [stdout]   --> src/shared/coord_2d.rs:12:11
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub const UP: Coord2D = Coord2D { x: 0, y: 1 };
[INFO] [stdout]    |           ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DOWN` is never used
[INFO] [stdout]   --> src/shared/coord_2d.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub const DOWN: Coord2D = Coord2D { x: 0, y: -1 };
[INFO] [stdout]    |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LEFT_UP` is never used
[INFO] [stdout]   --> src/shared/coord_2d.rs:14:11
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub const LEFT_UP: Coord2D = Coord2D { x: -1, y: 1 };
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RIGHT_UP` is never used
[INFO] [stdout]   --> src/shared/coord_2d.rs:15:11
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub const RIGHT_UP: Coord2D = Coord2D { x: 1, y: 1 };
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LEFT_DOWN` is never used
[INFO] [stdout]   --> src/shared/coord_2d.rs:16:11
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub const LEFT_DOWN: Coord2D = Coord2D { x: -1, y: -1 };
[INFO] [stdout]    |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RIGHT_DOWN` is never used
[INFO] [stdout]   --> src/shared/coord_2d.rs:17:11
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub const RIGHT_DOWN: Coord2D = Coord2D { x: 1, y: -1};
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DIRECTIONS` is never used
[INFO] [stdout]   --> src/shared/coord_2d.rs:19:11
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub const DIRECTIONS: [&Coord2D; 4] = [&LEFT, &RIGHT, &UP, &DOWN];
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ALL_DIRECTIONS` is never used
[INFO] [stdout]   --> src/shared/coord_2d.rs:20:11
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub const ALL_DIRECTIONS: [&Coord2D; 8] = [&LEFT, &RIGHT, &UP, &DOWN, &LEFT_UP, &RIGHT_UP, &LEFT_DOWN, &RIGHT_DOWN];
[INFO] [stdout]    |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `num_of_valid_passphrases` is never used
[INFO] [stdout]  --> src/day04.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn num_of_valid_passphrases<F>(passphrases: &str, passphrase_validator: F) -> usize
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid_passphrase` is never used
[INFO] [stdout]   --> src/day04.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn is_valid_passphrase(passphrase: &str) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid_advanced_passphrase` is never used
[INFO] [stdout]   --> src/day04.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn is_valid_advanced_passphrase(passphrase: &str) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ordered_word` is never used
[INFO] [stdout]   --> src/day04.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn ordered_word(word: &str) -> Vec<char> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `steps_to_escape` is never used
[INFO] [stdout]  --> src/day05.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn steps_to_escape<F>(input: &str, rule: F) -> i32
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_input` is never used
[INFO] [stdout]   --> src/day05.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn parse_input(input: &str) -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `steps_to_escape_simple` is never used
[INFO] [stdout]   --> src/day05.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn steps_to_escape_simple(input: &str) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `steps_to_escape_advanced` is never used
[INFO] [stdout]   --> src/day05.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn steps_to_escape_advanced(input: &str) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_memory_banks` is never used
[INFO] [stdout]  --> src/day06.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn get_memory_banks(input: &str) -> Vec<u32> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `index_of_highest` is never used
[INFO] [stdout]  --> src/day06.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn index_of_highest(memory_banks: &Vec<u32>) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `redistribute` is never used
[INFO] [stdout]   --> src/day06.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn redistribute(memory_banks: &Vec<u32>) -> Vec<u32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `redistributions_to_duplicate` is never used
[INFO] [stdout]   --> src/day06.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn redistributions_to_duplicate(input: &str) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `length_of_cycle` is never used
[INFO] [stdout]   --> src/day06.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn length_of_cycle(input: &str) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `REGEX` is never used
[INFO] [stdout]  --> src/day07.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | static REGEX: Lazy<Regex> = Lazy::new(|| { Regex::new("\\w+").unwrap() });
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tower` is never constructed
[INFO] [stdout]  --> src/day07.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Tower {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_towers_from_input` is never used
[INFO] [stdout]   --> src/day07.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn get_towers_from_input(input: &str) -> Vec<Tower> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_tower_from_line` is never used
[INFO] [stdout]   --> src/day07.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn get_tower_from_line(line: &str) -> Tower {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_bottom_tower` is never used
[INFO] [stdout]   --> src/day07.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn get_bottom_tower(towers: &Vec<Tower>) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_bottom_tower_from_input` is never used
[INFO] [stdout]   --> src/day07.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn get_bottom_tower_from_input(input: &str) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_total_weights_for_towers` is never used
[INFO] [stdout]   --> src/day07.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn get_total_weights_for_towers(towers: &Vec<Tower>) -> HashMap<String, i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_total_weight` is never used
[INFO] [stdout]   --> src/day07.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn get_total_weight(towers: &HashMap<&String, &Tower>, current_tower: &String, weights: &mut HashMap<String, i32>) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TowerAndTotal` is never constructed
[INFO] [stdout]   --> src/day07.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | struct TowerAndTotal {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_correct_weight_for_bad_tower` is never used
[INFO] [stdout]   --> src/day07.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn get_correct_weight_for_bad_tower(input: &str) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.40s
[INFO] running `Command { std: "docker" "inspect" "13017957d8ca21b967c868960b9cd13387aad065824f0c580a34d8f2261b7f35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13017957d8ca21b967c868960b9cd13387aad065824f0c580a34d8f2261b7f35", kill_on_drop: false }`
[INFO] [stdout] 13017957d8ca21b967c868960b9cd13387aad065824f0c580a34d8f2261b7f35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 92c47da730b41686b33d235905cdeb9878287c766548b4703050b719de500da5
[INFO] running `Command { std: "docker" "start" "-a" "92c47da730b41686b33d235905cdeb9878287c766548b4703050b719de500da5", kill_on_drop: false }`
[INFO] [stderr]    Compiling aoc_2017 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.65s
[INFO] running `Command { std: "docker" "inspect" "92c47da730b41686b33d235905cdeb9878287c766548b4703050b719de500da5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92c47da730b41686b33d235905cdeb9878287c766548b4703050b719de500da5", kill_on_drop: false }`
[INFO] [stdout] 92c47da730b41686b33d235905cdeb9878287c766548b4703050b719de500da5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fc54e374f8309170da68328d5c15716fe05274b555dd0e6116443b46963c9e80
[INFO] running `Command { std: "docker" "start" "-a" "fc54e374f8309170da68328d5c15716fe05274b555dd0e6116443b46963c9e80", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/aoc_2017-4285c3798b0322a8)
[INFO] [stdout] 
[INFO] [stdout] running 37 tests
[INFO] [stdout] test day01::tests::half_way_captcha_sums ... ok
[INFO] [stdout] test day01::tests::part_2 ... ok
[INFO] [stdout] test day01::tests::simple_captcha_sums ... ok
[INFO] [stdout] test day02::tests::part_1 ... ok
[INFO] [stdout] test day01::tests::part_1 ... ok
[INFO] [stdout] test day02::tests::part_2 ... ok
[INFO] [stdout] test day02::tests::simple_division_checksum ... ok
[INFO] [stdout] test day03::tests::easy_distances ... ok
[INFO] [stdout] test day02::tests::simple_checksum ... ok
[INFO] [stdout] test day03::tests::part_1 ... ok
[INFO] [stdout] test day03::tests::part_2 ... ok
[INFO] [stdout] test day04::tests::can_detect_valid_advanced_passphrases ... ok
[INFO] [stdout] test day04::tests::can_detect_valid_passphrases ... ok
[INFO] [stdout] test day05::tests::can_calculate_steps_to_escape_advanced ... ok
[INFO] [stdout] test day05::tests::usize_try_from_works_as_expected ... ok
[INFO] [stdout] test day05::tests::can_calculate_steps_to_escape ... ok
[INFO] [stdout] test day06::tests::can_find_index_of_highest ... ok
[INFO] [stdout] test day06::tests::can_get_memory_banks ... ok
[INFO] [stdout] test day06::tests::can_redistribute ... ok
[INFO] [stdout] test day06::tests::can_get_redistributions_to_duplicate ... ok
[INFO] [stdout] test day06::tests::can_get_length_of_cycle ... ok
[INFO] [stdout] test shared::coord_2d::tests::can_calculate_manhattan_distance ... ok
[INFO] [stdout] test shared::coord_2d::tests::can_add_coords ... ok
[INFO] [stdout] test shared::coord_2d::tests::directions_has_correct_values ... ok
[INFO] [stdout] test day04::tests::part_1 ... ok
[INFO] [stdout] test day07::tests::regex_experimentation ... ok
[INFO] [stdout] test day07::tests::can_get_weight_for_bad_tower ... ok
[INFO] [stdout] test day07::tests::can_get_towers ... ok
[INFO] [stdout] test day04::tests::part_2 ... ok
[INFO] [stdout] test day07::tests::can_get_bottom_tower ... ok
[INFO] [stdout] test day07::tests::can_get_total_weights_for_sample_input ... ok
[INFO] [stdout] test day07::tests::can_get_answer_for_part_2 ... ok
[INFO] [stdout] test day05::tests::part_1 ... ok
[INFO] [stdout] test day07::tests::can_get_answer_for_part_1 ... ok
[INFO] [stdout] test day06::tests::part_1 ... ok
[INFO] [stdout] test day06::tests::part_2 ... ok
[INFO] [stdout] test day05::tests::part_2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 37 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.93s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fc54e374f8309170da68328d5c15716fe05274b555dd0e6116443b46963c9e80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc54e374f8309170da68328d5c15716fe05274b555dd0e6116443b46963c9e80", kill_on_drop: false }`
[INFO] [stdout] fc54e374f8309170da68328d5c15716fe05274b555dd0e6116443b46963c9e80