[INFO] cloning repository https://github.com/AndreiBarsan/2021-advent-of-code
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AndreiBarsan/2021-advent-of-code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndreiBarsan%2F2021-advent-of-code", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndreiBarsan%2F2021-advent-of-code'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a34e376e88514b6d35b997f2cce354765ec327eb
[INFO] checking AndreiBarsan/2021-advent-of-code/a34e376e88514b6d35b997f2cce354765ec327eb against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndreiBarsan%2F2021-advent-of-code" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AndreiBarsan/2021-advent-of-code on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AndreiBarsan/2021-advent-of-code
[INFO] finished tweaking git repo https://github.com/AndreiBarsan/2021-advent-of-code
[INFO] tweaked toml for git repo https://github.com/AndreiBarsan/2021-advent-of-code written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/AndreiBarsan/2021-advent-of-code 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ndarray-stats v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 252540e7c1a084b0c7f379c296e979f5fb0ed28c05f977fcde139019e9659723
[INFO] running `Command { std: "docker" "start" "-a" "252540e7c1a084b0c7f379c296e979f5fb0ed28c05f977fcde139019e9659723", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "252540e7c1a084b0c7f379c296e979f5fb0ed28c05f977fcde139019e9659723", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "252540e7c1a084b0c7f379c296e979f5fb0ed28c05f977fcde139019e9659723", kill_on_drop: false }`
[INFO] [stdout] 252540e7c1a084b0c7f379c296e979f5fb0ed28c05f977fcde139019e9659723
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc6b070096fea88e484cd60ac874cdff948627a417fe0e93a26f5411ad65ec6f
[INFO] running `Command { std: "docker" "start" "-a" "bc6b070096fea88e484cd60ac874cdff948627a417fe0e93a26f5411ad65ec6f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.109
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling nom v7.1.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking number_prefix v0.4.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking simba v0.5.1
[INFO] [stderr]     Checking ndarray v0.15.4
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking noisy_float v0.2.0
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking indicatif v0.16.2
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling nalgebra-macros v0.1.0
[INFO] [stderr]     Checking ndarray-stats v0.5.0
[INFO] [stderr]     Checking structopt v0.3.25
[INFO] [stderr]     Checking nalgebra v0.27.1
[INFO] [stderr]     Checking aoc21 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cell::Ref`
[INFO] [stdout]  --> src/bin/18_snailfish.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::Ref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]   --> src/bin/18_snailfish.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::fs;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/bin/18_snailfish.rs:131:17
[INFO] [stdout]     |
[INFO] [stdout] 131 |     for (depth, val) in flat_data {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[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/bin/18_snailfish.rs:186:9
[INFO] [stdout]     |
[INFO] [stdout] 186 |     let mut cur = SnailNode::new(None);
[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: type alias `NodeLink` is never used
[INFO] [stdout]   --> src/bin/18_snailfish.rs:29:6
[INFO] [stdout]    |
[INFO] [stdout] 29 | type NodeLink = Option<Rc<RefCell<SnailNode>>>;
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SnailNode` is never constructed
[INFO] [stdout]   --> src/bin/18_snailfish.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct SnailNode {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `bl`, and `br` are never used
[INFO] [stdout]   --> src/bin/18_snailfish.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | impl SnailNode {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 61 |     fn new(val: Option<u32>) -> Rc<RefCell<Self>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 71 |     fn bl(&self) -> &RefCell<SnailNode> {
[INFO] [stdout]    |        ^^
[INFO] [stdout] ...
[INFO] [stdout] 76 |     fn br(&self) -> &RefCell<SnailNode> {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `from_flat` is never used
[INFO] [stdout]    --> src/bin/18_snailfish.rs:127:4
[INFO] [stdout]     |
[INFO] [stdout] 127 | fn from_flat(flat_data: Vec<(u32, u32)>) -> String {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_matching_bracket` is never used
[INFO] [stdout]    --> src/bin/18_snailfish.rs:149:4
[INFO] [stdout]     |
[INFO] [stdout] 149 | fn find_matching_bracket(data: &[char]) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_snail_pair_str` is never used
[INFO] [stdout]    --> src/bin/18_snailfish.rs:181:4
[INFO] [stdout]     |
[INFO] [stdout] 181 | fn parse_snail_pair_str(data: &str, p: NodeLink) -> NodeLink {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_snail_pair` is never used
[INFO] [stdout]    --> src/bin/18_snailfish.rs:185:4
[INFO] [stdout]     |
[INFO] [stdout] 185 | fn parse_snail_pair(data: &[char], p: NodeLink) -> NodeLink {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `day_18_snailfish` is never used
[INFO] [stdout]    --> src/bin/18_snailfish.rs:246:4
[INFO] [stdout]     |
[INFO] [stdout] 246 | fn day_18_snailfish() {}
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `graph`
[INFO] [stdout]   --> src/bin/12_passage.rs:25:21
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn can_visit_part_1(graph: &Graph, node: &Node, cur_path: &Vec<String>) -> bool {
[INFO] [stdout]    |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nn`
[INFO] [stdout]   --> src/bin/12_passage.rs:54:10
[INFO] [stdout]    |
[INFO] [stdout] 54 |     for (nn, count) in &stats {
[INFO] [stdout]    |          ^^ help: if this is intentional, prefix it with an underscore: `_nn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bool_to_pixel` is never used
[INFO] [stdout]   --> src/bin/20_trench_map.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn bool_to_pixel(val: &bool) -> char {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `conv2d_with_lookup` is never used
[INFO] [stdout]    --> src/bin/20_trench_map.rs:137:4
[INFO] [stdout]     |
[INFO] [stdout] 137 | fn conv2d_with_lookup(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_image` is never used
[INFO] [stdout]    --> src/bin/20_trench_map.rs:215:4
[INFO] [stdout]     |
[INFO] [stdout] 215 | fn print_image(data: &Vec<Vec<bool>>) {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/bin/11_dumbo.rs:43:32
[INFO] [stdout]    |
[INFO] [stdout] 43 | ...                   if new_r >= 0 && new_r < rows && new_c >= 0 && new_c < cols {
[INFO] [stdout]    |                          ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/bin/11_dumbo.rs:43:62
[INFO] [stdout]    |
[INFO] [stdout] 43 | ...                   if new_r >= 0 && new_r < rows && new_c >= 0 && new_c < cols {
[INFO] [stdout]    |                                                        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::Ref`
[INFO] [stdout]  --> src/bin/18_snailfish.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::Ref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]   --> src/bin/18_snailfish.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::fs;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `packet_start` is never read
[INFO] [stdout]    --> src/bin/16_packet_decoder.rs:159:17
[INFO] [stdout]     |
[INFO] [stdout] 159 |         let mut packet_start = 0;
[INFO] [stdout]     |                 ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end` is never read
[INFO] [stdout]    --> src/bin/16_packet_decoder.rs:160:17
[INFO] [stdout]     |
[INFO] [stdout] 160 |         let mut end = 0;
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/16_packet_decoder.rs:158:13
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let mut bit_type_id = bits[6];
[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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]    --> src/bin/15_chiton.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     for r in 0..(factor * rows) {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/bin/18_snailfish.rs:131:17
[INFO] [stdout]     |
[INFO] [stdout] 131 |     for (depth, val) in flat_data {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/bin/16_packet_decoder.rs:458:13
[INFO] [stdout]     |
[INFO] [stdout] 458 |             _ => panic!("Unsupported oepration type for packet: {:?}", packet),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/bin/16_packet_decoder.rs:458:13
[INFO] [stdout]     |
[INFO] [stdout] 433 |             OperatorType::SUM => sub.iter().map(|packet| evaluate(packet)).sum::<i64>(),
[INFO] [stdout]     |             ----------------- matches some of the same values
[INFO] [stdout] 434 |             OperatorType::PROD => sub.iter().map(|packet| evaluate(packet)).product::<i64>(),
[INFO] [stdout]     |             ------------------ matches some of the same values
[INFO] [stdout] 435 |             OperatorType::MIN => sub.iter().map(|packet| evaluate(packet)).min().unwrap(),
[INFO] [stdout]     |             ----------------- matches some of the same values
[INFO] [stdout] 436 |             OperatorType::MAX => sub.iter().map(|packet| evaluate(packet)).max().unwrap(),
[INFO] [stdout]     |             ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 458 |             _ => panic!("Unsupported oepration type for packet: {:?}", packet),
[INFO] [stdout]     |             ^ ...and 3 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/18_snailfish.rs:186:9
[INFO] [stdout]     |
[INFO] [stdout] 186 |     let mut cur = SnailNode::new(None);
[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: unreachable pattern
[INFO] [stdout]    --> src/bin/18_snailfish.rs:265:13
[INFO] [stdout]     |
[INFO] [stdout] 256 | /             SnailNode {
[INFO] [stdout] 257 | |                 value,
[INFO] [stdout] 258 | |                 parent,
[INFO] [stdout] 259 | |                 left,
[INFO] [stdout] 260 | |                 right,
[INFO] [stdout] 261 | |             } => {
[INFO] [stdout]     | |_____________- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 265 |               _ => panic!("Invalid tree"),
[INFO] [stdout]     |               ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/bin/18_snailfish.rs:257:17
[INFO] [stdout]     |
[INFO] [stdout] 257 |                 value,
[INFO] [stdout]     |                 ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent`
[INFO] [stdout]    --> src/bin/18_snailfish.rs:258:17
[INFO] [stdout]     |
[INFO] [stdout] 258 |                 parent,
[INFO] [stdout]     |                 ^^^^^^ help: try ignoring the field: `parent: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]    --> src/bin/15_chiton.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     for r in 0..(factor * rows) {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `from_flat` is never used
[INFO] [stdout]    --> src/bin/18_snailfish.rs:127:4
[INFO] [stdout]     |
[INFO] [stdout] 127 | fn from_flat(flat_data: Vec<(u32, u32)>) -> String {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `day_18_snailfish` is never used
[INFO] [stdout]    --> src/bin/18_snailfish.rs:246:4
[INFO] [stdout]     |
[INFO] [stdout] 246 | fn day_18_snailfish() {}
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Paper` is never constructed
[INFO] [stdout]   --> src/bin/13_origami.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Paper {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/25_sea_cucumber.rs:92:14
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let (mut new_state, mut n_moved) = step(&state);
[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/bin/25_sea_cucumber.rs:92:29
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let (mut new_state, mut n_moved) = step(&state);
[INFO] [stdout]    |                             ----^^^^^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/bin/04_squid_bingo.rs:120:21
[INFO] [stdout]     |
[INFO] [stdout] 120 |     let mut n_won = (0 as usize);
[INFO] [stdout]     |                     ^          ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 120 -     let mut n_won = (0 as usize);
[INFO] [stdout] 120 +     let mut n_won = 0 as usize;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/bin/04_squid_bingo.rs:120:21
[INFO] [stdout]     |
[INFO] [stdout] 120 |     let mut n_won = (0 as usize);
[INFO] [stdout]     |                     ^          ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 120 -     let mut n_won = (0 as usize);
[INFO] [stdout] 120 +     let mut n_won = 0 as usize;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray::prelude::*`
[INFO] [stdout]  --> src/bin/07_crabs.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ndarray::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray::Array`
[INFO] [stdout]  --> src/bin/07_crabs.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ndarray::Array;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `aview1`
[INFO] [stdout]  --> src/bin/07_crabs.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use ndarray::{array, aview1, Axis};
[INFO] [stdout]   |                      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row_idx`
[INFO] [stdout]   --> src/bin/04_squid_bingo.rs:98:17
[INFO] [stdout]    |
[INFO] [stdout] 98 |         let mut row_idx = 0;
[INFO] [stdout]    |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_row_idx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row_idx`
[INFO] [stdout]   --> src/bin/04_squid_bingo.rs:98:17
[INFO] [stdout]    |
[INFO] [stdout] 98 |         let mut row_idx = 0;
[INFO] [stdout]    |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_row_idx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]    --> src/bin/04_squid_bingo.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 |     for board in &mut boards {
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]    --> src/bin/04_squid_bingo.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 |     for board in &mut boards {
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/04_squid_bingo.rs:98:13
[INFO] [stdout]    |
[INFO] [stdout] 98 |         let mut row_idx = 0;
[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/bin/04_squid_bingo.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let mut board = Board {
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `demo_data`
[INFO] [stdout]  --> src/bin/07_crabs.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let demo_data = array![16., 1., 2., 0., 4., 2., 7., 1., 2., 14.];
[INFO] [stdout]   |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_demo_data`
[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/bin/04_squid_bingo.rs:98:13
[INFO] [stdout]    |
[INFO] [stdout] 98 |         let mut row_idx = 0;
[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/bin/04_squid_bingo.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let mut board = Board {
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/bin/08_seven_segment.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/bin/08_seven_segment.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/25_sea_cucumber.rs:92:14
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let (mut new_state, mut n_moved) = step(&state);
[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/bin/25_sea_cucumber.rs:92:29
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let (mut new_state, mut n_moved) = step(&state);
[INFO] [stdout]    |                             ----^^^^^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/bin/05_hydro_vents.rs:87:21
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let max_x = (max(self.start.x, self.end.x) + 1);
[INFO] [stdout]    |                     ^                                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 87 -         let max_x = (max(self.start.x, self.end.x) + 1);
[INFO] [stdout] 87 +         let max_x = max(self.start.x, self.end.x) + 1;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/bin/05_hydro_vents.rs:89:21
[INFO] [stdout]    |
[INFO] [stdout] 89 |         let max_y = (max(self.start.y, self.end.y) + 1);
[INFO] [stdout]    |                     ^                                 ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 89 -         let max_y = (max(self.start.y, self.end.y) + 1);
[INFO] [stdout] 89 +         let max_y = max(self.start.y, self.end.y) + 1;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `chars_in_five` is assigned to, but never used
[INFO] [stdout]    --> src/bin/08_seven_segment.rs:154:13
[INFO] [stdout]     |
[INFO] [stdout] 154 |     let mut chars_in_five: HashSet<char> = HashSet::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_chars_in_five` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `chars_in_five` is never read
[INFO] [stdout]    --> src/bin/08_seven_segment.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |             chars_in_five = chars_in_current;
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b` is never read
[INFO] [stdout]    --> src/bin/08_seven_segment.rs:194:13
[INFO] [stdout]     |
[INFO] [stdout] 194 |     let mut b: char = 'X';
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `g` is never read
[INFO] [stdout]    --> src/bin/08_seven_segment.rs:195:13
[INFO] [stdout]     |
[INFO] [stdout] 195 |     let mut g: char = 'X';
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `d` is never read
[INFO] [stdout]    --> src/bin/08_seven_segment.rs:196:13
[INFO] [stdout]     |
[INFO] [stdout] 196 |     let mut d: char = 'X';
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/08_seven_segment.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 |     let mut b_and_d: Vec<char> = (&chars_in_four - &chars_in_one).into_iter().collect();
[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/bin/08_seven_segment.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |     let mut b_and_g: Vec<char> = (&chars_in_zero - &chars_in_seven)
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray::prelude::*`
[INFO] [stdout]  --> src/bin/07_crabs.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ndarray::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray::Array`
[INFO] [stdout]  --> src/bin/07_crabs.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ndarray::Array;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `aview1`
[INFO] [stdout]  --> src/bin/07_crabs.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use ndarray::{array, aview1, Axis};
[INFO] [stdout]   |                      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `chars_in_five` is assigned to, but never used
[INFO] [stdout]    --> src/bin/08_seven_segment.rs:154:13
[INFO] [stdout]     |
[INFO] [stdout] 154 |     let mut chars_in_five: HashSet<char> = HashSet::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_chars_in_five` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `chars_in_five` is never read
[INFO] [stdout]    --> src/bin/08_seven_segment.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |             chars_in_five = chars_in_current;
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b` is never read
[INFO] [stdout]    --> src/bin/08_seven_segment.rs:194:13
[INFO] [stdout]     |
[INFO] [stdout] 194 |     let mut b: char = 'X';
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `g` is never read
[INFO] [stdout]    --> src/bin/08_seven_segment.rs:195:13
[INFO] [stdout]     |
[INFO] [stdout] 195 |     let mut g: char = 'X';
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `d` is never read
[INFO] [stdout]    --> src/bin/08_seven_segment.rs:196:13
[INFO] [stdout]     |
[INFO] [stdout] 196 |     let mut d: char = 'X';
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/08_seven_segment.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 |     let mut b_and_d: Vec<char> = (&chars_in_four - &chars_in_one).into_iter().collect();
[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/bin/08_seven_segment.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |     let mut b_and_g: Vec<char> = (&chars_in_zero - &chars_in_seven)
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/bin/24_alu.rs:239:22
[INFO] [stdout]     |
[INFO] [stdout] 239 |     target_zs.insert((0i64), (0i64));
[INFO] [stdout]     |                      ^    ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 239 -     target_zs.insert((0i64), (0i64));
[INFO] [stdout] 239 +     target_zs.insert(0i64, (0i64));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/bin/24_alu.rs:239:30
[INFO] [stdout]     |
[INFO] [stdout] 239 |     target_zs.insert((0i64), (0i64));
[INFO] [stdout]     |                              ^    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 239 -     target_zs.insert((0i64), (0i64));
[INFO] [stdout] 239 +     target_zs.insert((0i64), 0i64);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `demo_data`
[INFO] [stdout]  --> src/bin/07_crabs.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let demo_data = array![16., 1., 2., 0., 4., 2., 7., 1., 2., 14.];
[INFO] [stdout]   |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_demo_data`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Paper` is never constructed
[INFO] [stdout]   --> src/bin/13_origami.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Paper {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bool_to_pixel` is never used
[INFO] [stdout]   --> src/bin/20_trench_map.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn bool_to_pixel(val: &bool) -> char {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `conv2d_with_lookup` is never used
[INFO] [stdout]    --> src/bin/20_trench_map.rs:137:4
[INFO] [stdout]     |
[INFO] [stdout] 137 | fn conv2d_with_lookup(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_image` is never used
[INFO] [stdout]    --> src/bin/20_trench_map.rs:215:4
[INFO] [stdout]     |
[INFO] [stdout] 215 | fn print_image(data: &Vec<Vec<bool>>) {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/bin/11_dumbo.rs:43:32
[INFO] [stdout]    |
[INFO] [stdout] 43 | ...                   if new_r >= 0 && new_r < rows && new_c >= 0 && new_c < cols {
[INFO] [stdout]    |                          ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/bin/11_dumbo.rs:43:62
[INFO] [stdout]    |
[INFO] [stdout] 43 | ...                   if new_r >= 0 && new_r < rows && new_c >= 0 && new_c < cols {
[INFO] [stdout]    |                                                        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/bin/24_alu.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |             Err(e) => Expr::REG(input.chars().nth(0).unwrap()),
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `packet_start` is never read
[INFO] [stdout]    --> src/bin/16_packet_decoder.rs:159:17
[INFO] [stdout]     |
[INFO] [stdout] 159 |         let mut packet_start = 0;
[INFO] [stdout]     |                 ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end` is never read
[INFO] [stdout]    --> src/bin/16_packet_decoder.rs:160:17
[INFO] [stdout]     |
[INFO] [stdout] 160 |         let mut end = 0;
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/16_packet_decoder.rs:158:13
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let mut bit_type_id = bits[6];
[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: unused variable: `bits_consumed`
[INFO] [stdout]    --> src/bin/16_packet_decoder.rs:240:22
[INFO] [stdout]     |
[INFO] [stdout] 240 |         let (packet, bits_consumed) = parse_packet(&raw_packet);
[INFO] [stdout]     |                      ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bits_consumed`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `initial`
[INFO] [stdout]    --> src/bin/24_alu.rs:104:21
[INFO] [stdout]     |
[INFO] [stdout] 104 |                 let initial = reg[target_reg];
[INFO] [stdout]     |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_initial`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bits_consumed`
[INFO] [stdout]    --> src/bin/16_packet_decoder.rs:260:22
[INFO] [stdout]     |
[INFO] [stdout] 260 |         let (packet, bits_consumed) = parse_packet(&raw_packet);
[INFO] [stdout]     |                      ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bits_consumed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bits_consumed`
[INFO] [stdout]    --> src/bin/16_packet_decoder.rs:288:22
[INFO] [stdout]     |
[INFO] [stdout] 288 |         let (packet, bits_consumed) = parse_packet(&raw_packet);
[INFO] [stdout]     |                      ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bits_consumed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/24_alu.rs:186:9
[INFO] [stdout]     |
[INFO] [stdout] 186 |     let mut x = z_in % 26 + b; // b is a possibly negative constant
[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: unused variable: `start_instruction`
[INFO] [stdout]    --> src/bin/24_alu.rs:250:17
[INFO] [stdout]     |
[INFO] [stdout] 250 |             let start_instruction = instructions_per_digit * digit_idx;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_start_instruction`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end_instruction`
[INFO] [stdout]    --> src/bin/24_alu.rs:251:17
[INFO] [stdout]     |
[INFO] [stdout] 251 |             let end_instruction = instructions_per_digit * (digit_idx + 1usize);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_end_instruction`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `commands`
[INFO] [stdout]    --> src/bin/24_alu.rs:237:20
[INFO] [stdout]     |
[INFO] [stdout] 237 | fn solve_version_b(commands: &Vec<ALUInstruction>) -> (Option<i64>, Option<i64>) {
[INFO] [stdout]     |                    ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_commands`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/24_alu.rs:248:17
[INFO] [stdout]     |
[INFO] [stdout] 248 |             let mut digits = vec![x];
[INFO] [stdout]     |                 ----^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/bin/24_alu.rs:239:22
[INFO] [stdout]     |
[INFO] [stdout] 239 |     target_zs.insert((0i64), (0i64));
[INFO] [stdout]     |                      ^    ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 239 -     target_zs.insert((0i64), (0i64));
[INFO] [stdout] 239 +     target_zs.insert(0i64, (0i64));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/bin/24_alu.rs:239:30
[INFO] [stdout]     |
[INFO] [stdout] 239 |     target_zs.insert((0i64), (0i64));
[INFO] [stdout]     |                              ^    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 239 -     target_zs.insert((0i64), (0i64));
[INFO] [stdout] 239 +     target_zs.insert((0i64), 0i64);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/bin/16_packet_decoder.rs:458:13
[INFO] [stdout]     |
[INFO] [stdout] 458 |             _ => panic!("Unsupported oepration type for packet: {:?}", packet),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/bin/16_packet_decoder.rs:458:13
[INFO] [stdout]     |
[INFO] [stdout] 433 |             OperatorType::SUM => sub.iter().map(|packet| evaluate(packet)).sum::<i64>(),
[INFO] [stdout]     |             ----------------- matches some of the same values
[INFO] [stdout] 434 |             OperatorType::PROD => sub.iter().map(|packet| evaluate(packet)).product::<i64>(),
[INFO] [stdout]     |             ------------------ matches some of the same values
[INFO] [stdout] 435 |             OperatorType::MIN => sub.iter().map(|packet| evaluate(packet)).min().unwrap(),
[INFO] [stdout]     |             ----------------- matches some of the same values
[INFO] [stdout] 436 |             OperatorType::MAX => sub.iter().map(|packet| evaluate(packet)).max().unwrap(),
[INFO] [stdout]     |             ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 458 |             _ => panic!("Unsupported oepration type for packet: {:?}", packet),
[INFO] [stdout]     |             ^ ...and 3 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/24_alu.rs:306:17
[INFO] [stdout]     |
[INFO] [stdout] 306 |             let mut digits = digit_vec(x);
[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/bin/24_alu.rs:342:17
[INFO] [stdout]     |
[INFO] [stdout] 342 |             let mut digits = vec![x];
[INFO] [stdout]     |                 ----^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `commands`
[INFO] [stdout]    --> src/bin/24_alu.rs:403:9
[INFO] [stdout]     |
[INFO] [stdout] 403 |     let commands: Vec<ALUInstruction> = inputs.split("\n").map(parse_alu_instruction).collect();
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_commands`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `program_spec`
[INFO] [stdout]    --> src/bin/24_alu.rs:404:9
[INFO] [stdout]     |
[INFO] [stdout] 404 |     let program_spec: Vec<(i64, i64, i64)> = get_program_spec();
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_program_spec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected_part_one_solution`
[INFO] [stdout]    --> src/bin/24_alu.rs:411:9
[INFO] [stdout]     |
[INFO] [stdout] 411 |     let expected_part_one_solution: i64 = 39999698799429;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected_part_one_solution`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected_part_two_solution`
[INFO] [stdout]    --> src/bin/24_alu.rs:412:9
[INFO] [stdout]     |
[INFO] [stdout] 412 |     let expected_part_two_solution: i64 = 18116121134117;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected_part_two_solution`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `solution`
[INFO] [stdout]    --> src/bin/24_alu.rs:422:14
[INFO] [stdout]     |
[INFO] [stdout] 422 |         Some(solution) => {
[INFO] [stdout]     |              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_solution`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `execute` is never used
[INFO] [stdout]   --> src/bin/24_alu.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn execute(
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `digit_vec` is never used
[INFO] [stdout]    --> src/bin/24_alu.rs:139:4
[INFO] [stdout]     |
[INFO] [stdout] 139 | fn digit_vec(num: i64) -> Vec<i64> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `digit_block` is never used
[INFO] [stdout]    --> src/bin/24_alu.rs:179:4
[INFO] [stdout]     |
[INFO] [stdout] 179 | fn digit_block(digit: i64, z_in: i64, a: i64, b: i64, c: i64) -> i64 {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_version_b` is never used
[INFO] [stdout]    --> src/bin/24_alu.rs:237:4
[INFO] [stdout]     |
[INFO] [stdout] 237 | fn solve_version_b(commands: &Vec<ALUInstruction>) -> (Option<i64>, Option<i64>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_version_a` is never used
[INFO] [stdout]    --> src/bin/24_alu.rs:289:4
[INFO] [stdout]     |
[INFO] [stdout] 289 | fn solve_version_a(commands: &Vec<ALUInstruction>) -> (Option<i64>, Option<i64>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exec_spec` is never used
[INFO] [stdout]    --> src/bin/24_alu.rs:391:4
[INFO] [stdout]     |
[INFO] [stdout] 391 | fn exec_spec(digits: &Vec<i64>, spec: &Vec<(i64, i64, i64)>, start_z: i64) -> i64 {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/bin/24_alu.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |             Err(e) => Expr::REG(input.chars().nth(0).unwrap()),
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `initial`
[INFO] [stdout]    --> src/bin/24_alu.rs:104:21
[INFO] [stdout]     |
[INFO] [stdout] 104 |                 let initial = reg[target_reg];
[INFO] [stdout]     |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_initial`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/24_alu.rs:186:9
[INFO] [stdout]     |
[INFO] [stdout] 186 |     let mut x = z_in % 26 + b; // b is a possibly negative constant
[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: unused variable: `start_instruction`
[INFO] [stdout]    --> src/bin/24_alu.rs:250:17
[INFO] [stdout]     |
[INFO] [stdout] 250 |             let start_instruction = instructions_per_digit * digit_idx;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_start_instruction`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end_instruction`
[INFO] [stdout]    --> src/bin/24_alu.rs:251:17
[INFO] [stdout]     |
[INFO] [stdout] 251 |             let end_instruction = instructions_per_digit * (digit_idx + 1usize);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_end_instruction`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `commands`
[INFO] [stdout]    --> src/bin/24_alu.rs:237:20
[INFO] [stdout]     |
[INFO] [stdout] 237 | fn solve_version_b(commands: &Vec<ALUInstruction>) -> (Option<i64>, Option<i64>) {
[INFO] [stdout]     |                    ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_commands`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/24_alu.rs:248:17
[INFO] [stdout]     |
[INFO] [stdout] 248 |             let mut digits = vec![x];
[INFO] [stdout]     |                 ----^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `p1_score` is never read
[INFO] [stdout]   --> src/bin/21_dirac_dice.rs:94:13
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let mut p1_score: usize = 0;
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/21_dirac_dice.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |     let mut die = DeterministicDie::new(n_sides);
[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/bin/24_alu.rs:306:17
[INFO] [stdout]     |
[INFO] [stdout] 306 |             let mut digits = digit_vec(x);
[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/bin/24_alu.rs:342:17
[INFO] [stdout]     |
[INFO] [stdout] 342 |             let mut digits = vec![x];
[INFO] [stdout]     |                 ----^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `commands`
[INFO] [stdout]    --> src/bin/24_alu.rs:403:9
[INFO] [stdout]     |
[INFO] [stdout] 403 |     let commands: Vec<ALUInstruction> = inputs.split("\n").map(parse_alu_instruction).collect();
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_commands`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `program_spec`
[INFO] [stdout]    --> src/bin/24_alu.rs:404:9
[INFO] [stdout]     |
[INFO] [stdout] 404 |     let program_spec: Vec<(i64, i64, i64)> = get_program_spec();
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_program_spec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected_part_one_solution`
[INFO] [stdout]    --> src/bin/24_alu.rs:411:9
[INFO] [stdout]     |
[INFO] [stdout] 411 |     let expected_part_one_solution: i64 = 39999698799429;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected_part_one_solution`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected_part_two_solution`
[INFO] [stdout]    --> src/bin/24_alu.rs:412:9
[INFO] [stdout]     |
[INFO] [stdout] 412 |     let expected_part_two_solution: i64 = 18116121134117;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected_part_two_solution`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `solution`
[INFO] [stdout]    --> src/bin/24_alu.rs:422:14
[INFO] [stdout]     |
[INFO] [stdout] 422 |         Some(solution) => {
[INFO] [stdout]     |              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_solution`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `execute` is never used
[INFO] [stdout]   --> src/bin/24_alu.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn execute(
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `digit_vec` is never used
[INFO] [stdout]    --> src/bin/24_alu.rs:139:4
[INFO] [stdout]     |
[INFO] [stdout] 139 | fn digit_vec(num: i64) -> Vec<i64> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `digit_block` is never used
[INFO] [stdout]    --> src/bin/24_alu.rs:179:4
[INFO] [stdout]     |
[INFO] [stdout] 179 | fn digit_block(digit: i64, z_in: i64, a: i64, b: i64, c: i64) -> i64 {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_version_b` is never used
[INFO] [stdout]    --> src/bin/24_alu.rs:237:4
[INFO] [stdout]     |
[INFO] [stdout] 237 | fn solve_version_b(commands: &Vec<ALUInstruction>) -> (Option<i64>, Option<i64>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_version_a` is never used
[INFO] [stdout]    --> src/bin/24_alu.rs:289:4
[INFO] [stdout]     |
[INFO] [stdout] 289 | fn solve_version_a(commands: &Vec<ALUInstruction>) -> (Option<i64>, Option<i64>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exec_spec` is never used
[INFO] [stdout]    --> src/bin/24_alu.rs:391:4
[INFO] [stdout]     |
[INFO] [stdout] 391 | fn exec_spec(digits: &Vec<i64>, spec: &Vec<(i64, i64, i64)>, start_z: i64) -> i64 {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `p1_score` is never read
[INFO] [stdout]   --> src/bin/21_dirac_dice.rs:94:13
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let mut p1_score: usize = 0;
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/21_dirac_dice.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |     let mut die = DeterministicDie::new(n_sides);
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/bin/05_hydro_vents.rs:87:21
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let max_x = (max(self.start.x, self.end.x) + 1);
[INFO] [stdout]    |                     ^                                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 87 -         let max_x = (max(self.start.x, self.end.x) + 1);
[INFO] [stdout] 87 +         let max_x = max(self.start.x, self.end.x) + 1;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/bin/05_hydro_vents.rs:89:21
[INFO] [stdout]    |
[INFO] [stdout] 89 |         let max_y = (max(self.start.y, self.end.y) + 1);
[INFO] [stdout]    |                     ^                                 ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 89 -         let max_y = (max(self.start.y, self.end.y) + 1);
[INFO] [stdout] 89 +         let max_y = max(self.start.y, self.end.y) + 1;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `graph`
[INFO] [stdout]   --> src/bin/12_passage.rs:25:21
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn can_visit_part_1(graph: &Graph, node: &Node, cur_path: &Vec<String>) -> bool {
[INFO] [stdout]    |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nn`
[INFO] [stdout]   --> src/bin/12_passage.rs:54:10
[INFO] [stdout]    |
[INFO] [stdout] 54 |     for (nn, count) in &stats {
[INFO] [stdout]    |          ^^ help: if this is intentional, prefix it with an underscore: `_nn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 43.65s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nalgebra v0.27.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "bc6b070096fea88e484cd60ac874cdff948627a417fe0e93a26f5411ad65ec6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc6b070096fea88e484cd60ac874cdff948627a417fe0e93a26f5411ad65ec6f", kill_on_drop: false }`
[INFO] [stdout] bc6b070096fea88e484cd60ac874cdff948627a417fe0e93a26f5411ad65ec6f