[INFO] cloning repository https://github.com/wjorda/advent-of-code-20
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wjorda/advent-of-code-20" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwjorda%2Fadvent-of-code-20", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwjorda%2Fadvent-of-code-20'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 677a81a5c4977ce78e0ac28a900f389c79d203dc
[INFO] building wjorda/advent-of-code-20 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwjorda%2Fadvent-of-code-20" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wjorda/advent-of-code-20 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wjorda/advent-of-code-20
[INFO] finished tweaking git repo https://github.com/wjorda/advent-of-code-20
[INFO] tweaked toml for git repo https://github.com/wjorda/advent-of-code-20 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/wjorda/advent-of-code-20 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 15fc5b7a250c28fab6e0d1cabebf581b53e1c29ac6f0c04581f3871dd822cdfc
[INFO] running `Command { std: "docker" "start" "-a" "15fc5b7a250c28fab6e0d1cabebf581b53e1c29ac6f0c04581f3871dd822cdfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15fc5b7a250c28fab6e0d1cabebf581b53e1c29ac6f0c04581f3871dd822cdfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15fc5b7a250c28fab6e0d1cabebf581b53e1c29ac6f0c04581f3871dd822cdfc", kill_on_drop: false }`
[INFO] [stdout] 15fc5b7a250c28fab6e0d1cabebf581b53e1c29ac6f0c04581f3871dd822cdfc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe7f4c6b6244ecad3f6ba463ca93c5a2f1f4008d7365560153f52c985936d43a
[INFO] running `Command { std: "docker" "start" "-a" "fe7f4c6b6244ecad3f6ba463ca93c5a2f1f4008d7365560153f52c985936d43a", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling regex-syntax v0.6.21
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling adventofcode20 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> src/day18.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `regex::internal::Char`
[INFO] [stdout]  --> src/day18.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use regex::internal::Char;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/day18.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 150 |     let mut sol: (Int, Int) = rdr.lines()
[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 `n_empty` is assigned to, but never used
[INFO] [stdout]   --> src/day11.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let mut n_empty = 0;
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_n_empty` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `n_empty` is assigned to, but never used
[INFO] [stdout]   --> src/day11.rs:84:17
[INFO] [stdout]    |
[INFO] [stdout] 84 |         let mut n_empty = 0;
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_n_empty` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ag2`
[INFO] [stdout]    --> src/day21.rs:118:14
[INFO] [stdout]     |
[INFO] [stdout] 118 |         for (ag2, bag) in &mut mapping_bags {
[INFO] [stdout]     |              ^^^ help: if this is intentional, prefix it with an underscore: `_ag2`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/day21.rs:95:52
[INFO] [stdout]    |
[INFO] [stdout] 95 |             let b = possible_mappings.iter().any(|(k,v)| v.contains(ing));
[INFO] [stdout]    |                                                    ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/day21.rs:114:60
[INFO] [stdout]     |
[INFO] [stdout] 114 |     while let Some((ag, bag)) = mapping_bags.iter().find(|(k,v)| v.len() == 1) {
[INFO] [stdout]     |                                                            ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `generation`
[INFO] [stdout]   --> src/day17.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     for generation in 0..6 {
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_generation`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `generation`
[INFO] [stdout]   --> src/day17.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     for generation in 0..6 {
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_generation`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `game`
[INFO] [stdout]   --> src/day22.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let game = *count;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_game`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `round` is assigned to, but never used
[INFO] [stdout]   --> src/day22.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut round = 0usize;
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_round` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `player_winner`
[INFO] [stdout]    --> src/day22.rs:113:10
[INFO] [stdout]     |
[INFO] [stdout] 113 |     let (player_winner, score) = recursive_combat(player1p2, player2p2, &mut 0);
[INFO] [stdout]     |          ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_player_winner`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AddAssign`, `Add`, `Mul`, and `Neg`
[INFO] [stdout]  --> src/day24.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Add, AddAssign, Neg, Mul};
[INFO] [stdout]   |                ^^^  ^^^^^^^^^  ^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/day24.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `generation`
[INFO] [stdout]   --> src/day24.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     for generation in 0..100 {
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_generation`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/day16.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufReader`
[INFO] [stdout]  --> src/day16.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{BufReader, BufRead};
[INFO] [stdout]   |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Range`
[INFO] [stdout]  --> src/day16.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::{Range, RangeInclusive};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> src/day18.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `regex::internal::Char`
[INFO] [stdout]  --> src/day18.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use regex::internal::Char;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> src/day20.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `VecDeque`
[INFO] [stdout]  --> src/day23.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{VecDeque, HashMap};
[INFO] [stdout]   |                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AddAssign`, `Add`, `Mul`, and `Neg`
[INFO] [stdout]  --> src/day24.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Add, AddAssign, Neg, Mul};
[INFO] [stdout]   |                ^^^  ^^^^^^^^^  ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/day24.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `VecDeque`
[INFO] [stdout]  --> src/day23.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{VecDeque, HashMap};
[INFO] [stdout]   |                        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `round`
[INFO] [stdout]   --> src/day23.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     for round in 0..rounds {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_round`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ROUNDS` is never used
[INFO] [stdout]  --> src/day23.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const ROUNDS: usize = 100;
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cup` is never constructed
[INFO] [stdout]   --> src/day23.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Cup(usize);
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/day16.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufReader`
[INFO] [stdout]  --> src/day16.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{BufReader, BufRead};
[INFO] [stdout]   |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Range`
[INFO] [stdout]  --> src/day16.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::{Range, RangeInclusive};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/day16.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{BufReader, BufRead};
[INFO] [stdout]   |                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day16.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let mut other_tickets = sections.next().map(|s|
[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/day16.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let mut p1: (Int, Vec<&Ticket>) = other_tickets.iter()
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/day16.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{BufReader, BufRead};
[INFO] [stdout]   |                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> src/day20.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `x` is assigned to, but never used
[INFO] [stdout]   --> src/day19.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut x = 0;
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_x` instead
[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/day19.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |     let mut lines = rdr.lines().filter_map(|r| r.ok()).collect::<Vec<_>>();
[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/day19.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let mut regexes = create_regexes(&rules);
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `n_empty` is assigned to, but never used
[INFO] [stdout]   --> src/day11.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let mut n_empty = 0;
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_n_empty` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `n_empty` is assigned to, but never used
[INFO] [stdout]   --> src/day11.rs:84:17
[INFO] [stdout]    |
[INFO] [stdout] 84 |         let mut n_empty = 0;
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_n_empty` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/day20.rs:187:29
[INFO] [stdout]     |
[INFO] [stdout] 187 |                     .find(|(i, edge)| edge_matches(**edge, north, &edge_counts))
[INFO] [stdout]     |                             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `edge`
[INFO] [stdout]    --> src/day20.rs:188:31
[INFO] [stdout]     |
[INFO] [stdout] 188 |                     .map(|(i, edge)| i)?;
[INFO] [stdout]     |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_edge`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day16.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let mut other_tickets = sections.next().map(|s|
[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/day16.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let mut p1: (Int, Vec<&Ticket>) = other_tickets.iter()
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `generation`
[INFO] [stdout]   --> src/day17.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     for generation in 0..6 {
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_generation`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `generation`
[INFO] [stdout]   --> src/day17.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     for generation in 0..6 {
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_generation`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/day18.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 150 |     let mut sol: (Int, Int) = rdr.lines()
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `x` is assigned to, but never used
[INFO] [stdout]   --> src/day19.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut x = 0;
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_x` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day19.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |     let mut lines = rdr.lines().filter_map(|r| r.ok()).collect::<Vec<_>>();
[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/day19.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let mut regexes = create_regexes(&rules);
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/day20.rs:187:29
[INFO] [stdout]     |
[INFO] [stdout] 187 |                     .find(|(i, edge)| edge_matches(**edge, north, &edge_counts))
[INFO] [stdout]     |                             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `edge`
[INFO] [stdout]    --> src/day20.rs:188:31
[INFO] [stdout]     |
[INFO] [stdout] 188 |                     .map(|(i, edge)| i)?;
[INFO] [stdout]     |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_edge`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ag2`
[INFO] [stdout]    --> src/day21.rs:118:14
[INFO] [stdout]     |
[INFO] [stdout] 118 |         for (ag2, bag) in &mut mapping_bags {
[INFO] [stdout]     |              ^^^ help: if this is intentional, prefix it with an underscore: `_ag2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/day21.rs:95:52
[INFO] [stdout]    |
[INFO] [stdout] 95 |             let b = possible_mappings.iter().any(|(k,v)| v.contains(ing));
[INFO] [stdout]    |                                                    ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/day21.rs:114:60
[INFO] [stdout]     |
[INFO] [stdout] 114 |     while let Some((ag, bag)) = mapping_bags.iter().find(|(k,v)| v.len() == 1) {
[INFO] [stdout]     |                                                            ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `game`
[INFO] [stdout]   --> src/day22.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let game = *count;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_game`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `round` is assigned to, but never used
[INFO] [stdout]   --> src/day22.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut round = 0usize;
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_round` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `player_winner`
[INFO] [stdout]    --> src/day22.rs:113:10
[INFO] [stdout]     |
[INFO] [stdout] 113 |     let (player_winner, score) = recursive_combat(player1p2, player2p2, &mut 0);
[INFO] [stdout]     |          ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_player_winner`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `round`
[INFO] [stdout]   --> src/day23.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     for round in 0..rounds {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_round`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `generation`
[INFO] [stdout]   --> src/day24.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     for generation in 0..100 {
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_generation`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DOOR_SN` is never used
[INFO] [stdout]   --> src/day25.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const DOOR_SN: Int = 7;
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `key` and `sn` are never read
[INFO] [stdout]   --> src/day25.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Device {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 20 |     key: PublicKey,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 21 |     sn: Int,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Device` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `cid` is never read
[INFO] [stdout]   --> src/day4.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | struct Passport {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     cid: Option<String>
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Passport` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ROUNDS` is never used
[INFO] [stdout]  --> src/day23.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const ROUNDS: usize = 100;
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cup` is never constructed
[INFO] [stdout]   --> src/day23.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Cup(usize);
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DOOR_SN` is never used
[INFO] [stdout]   --> src/day25.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const DOOR_SN: Int = 7;
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `key` and `sn` are never read
[INFO] [stdout]   --> src/day25.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Device {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 20 |     key: PublicKey,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 21 |     sn: Int,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Device` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `cid` is never read
[INFO] [stdout]   --> src/day4.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | struct Passport {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     cid: Option<String>
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Passport` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.74s
[INFO] running `Command { std: "docker" "inspect" "fe7f4c6b6244ecad3f6ba463ca93c5a2f1f4008d7365560153f52c985936d43a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe7f4c6b6244ecad3f6ba463ca93c5a2f1f4008d7365560153f52c985936d43a", kill_on_drop: false }`
[INFO] [stdout] fe7f4c6b6244ecad3f6ba463ca93c5a2f1f4008d7365560153f52c985936d43a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac61377d506bfcc96486b53b14e554d851f10327efc70925023c4ad72b7d3101
[INFO] running `Command { std: "docker" "start" "-a" "ac61377d506bfcc96486b53b14e554d851f10327efc70925023c4ad72b7d3101", kill_on_drop: false }`
[INFO] [stderr]    Compiling adventofcode20 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> src/day20.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/day16.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufReader`
[INFO] [stdout]  --> src/day16.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{BufReader, BufRead};
[INFO] [stdout]   |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Range`
[INFO] [stdout]  --> src/day16.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::{Range, RangeInclusive};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `n_empty` is assigned to, but never used
[INFO] [stdout]   --> src/day11.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let mut n_empty = 0;
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_n_empty` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `n_empty` is assigned to, but never used
[INFO] [stdout]   --> src/day11.rs:84:17
[INFO] [stdout]    |
[INFO] [stdout] 84 |         let mut n_empty = 0;
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_n_empty` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/day16.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{BufReader, BufRead};
[INFO] [stdout]   |                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/day20.rs:187:29
[INFO] [stdout]     |
[INFO] [stdout] 187 |                     .find(|(i, edge)| edge_matches(**edge, north, &edge_counts))
[INFO] [stdout]     |                             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `edge`
[INFO] [stdout]    --> src/day20.rs:188:31
[INFO] [stdout]     |
[INFO] [stdout] 188 |                     .map(|(i, edge)| i)?;
[INFO] [stdout]     |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_edge`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day16.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let mut other_tickets = sections.next().map(|s|
[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/day16.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let mut p1: (Int, Vec<&Ticket>) = other_tickets.iter()
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `cid` is never read
[INFO] [stdout]   --> src/day4.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | struct Passport {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     cid: Option<String>
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Passport` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `game`
[INFO] [stdout]   --> src/day22.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let game = *count;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_game`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `round` is assigned to, but never used
[INFO] [stdout]   --> src/day22.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut round = 0usize;
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_round` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `player_winner`
[INFO] [stdout]    --> src/day22.rs:113:10
[INFO] [stdout]     |
[INFO] [stdout] 113 |     let (player_winner, score) = recursive_combat(player1p2, player2p2, &mut 0);
[INFO] [stdout]     |          ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_player_winner`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> src/day18.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `regex::internal::Char`
[INFO] [stdout]  --> src/day18.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use regex::internal::Char;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/day18.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 150 |     let mut sol: (Int, Int) = rdr.lines()
[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: `ag2`
[INFO] [stdout]    --> src/day21.rs:118:14
[INFO] [stdout]     |
[INFO] [stdout] 118 |         for (ag2, bag) in &mut mapping_bags {
[INFO] [stdout]     |              ^^^ help: if this is intentional, prefix it with an underscore: `_ag2`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/day21.rs:95:52
[INFO] [stdout]    |
[INFO] [stdout] 95 |             let b = possible_mappings.iter().any(|(k,v)| v.contains(ing));
[INFO] [stdout]    |                                                    ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/day21.rs:114:60
[INFO] [stdout]     |
[INFO] [stdout] 114 |     while let Some((ag, bag)) = mapping_bags.iter().find(|(k,v)| v.len() == 1) {
[INFO] [stdout]     |                                                            ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `generation`
[INFO] [stdout]   --> src/day17.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     for generation in 0..6 {
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_generation`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `generation`
[INFO] [stdout]   --> src/day17.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     for generation in 0..6 {
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_generation`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `x` is assigned to, but never used
[INFO] [stdout]   --> src/day19.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut x = 0;
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_x` instead
[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/day19.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |     let mut lines = rdr.lines().filter_map(|r| r.ok()).collect::<Vec<_>>();
[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/day19.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let mut regexes = create_regexes(&rules);
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DOOR_SN` is never used
[INFO] [stdout]   --> src/day25.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const DOOR_SN: Int = 7;
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `key` and `sn` are never read
[INFO] [stdout]   --> src/day25.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Device {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 20 |     key: PublicKey,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 21 |     sn: Int,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Device` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `VecDeque`
[INFO] [stdout]  --> src/day23.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{VecDeque, HashMap};
[INFO] [stdout]   |                        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AddAssign`, `Add`, `Mul`, and `Neg`
[INFO] [stdout]  --> src/day24.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Add, AddAssign, Neg, Mul};
[INFO] [stdout]   |                ^^^  ^^^^^^^^^  ^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/day24.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `round`
[INFO] [stdout]   --> src/day23.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     for round in 0..rounds {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_round`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ROUNDS` is never used
[INFO] [stdout]  --> src/day23.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const ROUNDS: usize = 100;
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cup` is never constructed
[INFO] [stdout]   --> src/day23.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Cup(usize);
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/day16.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufReader`
[INFO] [stdout]  --> src/day16.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{BufReader, BufRead};
[INFO] [stdout]   |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Range`
[INFO] [stdout]  --> src/day16.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::{Range, RangeInclusive};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> src/day18.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `regex::internal::Char`
[INFO] [stdout]  --> src/day18.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use regex::internal::Char;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> src/day20.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `VecDeque`
[INFO] [stdout]  --> src/day23.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{VecDeque, HashMap};
[INFO] [stdout]   |                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AddAssign`, `Add`, `Mul`, and `Neg`
[INFO] [stdout]  --> src/day24.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Add, AddAssign, Neg, Mul};
[INFO] [stdout]   |                ^^^  ^^^^^^^^^  ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/day24.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `generation`
[INFO] [stdout]   --> src/day24.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     for generation in 0..100 {
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_generation`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/day16.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{BufReader, BufRead};
[INFO] [stdout]   |                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `n_empty` is assigned to, but never used
[INFO] [stdout]   --> src/day11.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let mut n_empty = 0;
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_n_empty` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `n_empty` is assigned to, but never used
[INFO] [stdout]   --> src/day11.rs:84:17
[INFO] [stdout]    |
[INFO] [stdout] 84 |         let mut n_empty = 0;
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_n_empty` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day16.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let mut other_tickets = sections.next().map(|s|
[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/day16.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let mut p1: (Int, Vec<&Ticket>) = other_tickets.iter()
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `generation`
[INFO] [stdout]   --> src/day17.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     for generation in 0..6 {
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_generation`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `generation`
[INFO] [stdout]   --> src/day17.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     for generation in 0..6 {
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_generation`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/day18.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 150 |     let mut sol: (Int, Int) = rdr.lines()
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `x` is assigned to, but never used
[INFO] [stdout]   --> src/day19.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut x = 0;
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_x` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day19.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |     let mut lines = rdr.lines().filter_map(|r| r.ok()).collect::<Vec<_>>();
[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/day19.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let mut regexes = create_regexes(&rules);
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/day20.rs:187:29
[INFO] [stdout]     |
[INFO] [stdout] 187 |                     .find(|(i, edge)| edge_matches(**edge, north, &edge_counts))
[INFO] [stdout]     |                             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `edge`
[INFO] [stdout]    --> src/day20.rs:188:31
[INFO] [stdout]     |
[INFO] [stdout] 188 |                     .map(|(i, edge)| i)?;
[INFO] [stdout]     |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_edge`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ag2`
[INFO] [stdout]    --> src/day21.rs:118:14
[INFO] [stdout]     |
[INFO] [stdout] 118 |         for (ag2, bag) in &mut mapping_bags {
[INFO] [stdout]     |              ^^^ help: if this is intentional, prefix it with an underscore: `_ag2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/day21.rs:95:52
[INFO] [stdout]    |
[INFO] [stdout] 95 |             let b = possible_mappings.iter().any(|(k,v)| v.contains(ing));
[INFO] [stdout]    |                                                    ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/day21.rs:114:60
[INFO] [stdout]     |
[INFO] [stdout] 114 |     while let Some((ag, bag)) = mapping_bags.iter().find(|(k,v)| v.len() == 1) {
[INFO] [stdout]     |                                                            ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `game`
[INFO] [stdout]   --> src/day22.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let game = *count;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_game`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `round` is assigned to, but never used
[INFO] [stdout]   --> src/day22.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut round = 0usize;
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_round` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `player_winner`
[INFO] [stdout]    --> src/day22.rs:113:10
[INFO] [stdout]     |
[INFO] [stdout] 113 |     let (player_winner, score) = recursive_combat(player1p2, player2p2, &mut 0);
[INFO] [stdout]     |          ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_player_winner`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `round`
[INFO] [stdout]   --> src/day23.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     for round in 0..rounds {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_round`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `generation`
[INFO] [stdout]   --> src/day24.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     for generation in 0..100 {
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_generation`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `cid` is never read
[INFO] [stdout]   --> src/day4.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | struct Passport {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     cid: Option<String>
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Passport` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ROUNDS` is never used
[INFO] [stdout]  --> src/day23.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const ROUNDS: usize = 100;
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cup` is never constructed
[INFO] [stdout]   --> src/day23.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Cup(usize);
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DOOR_SN` is never used
[INFO] [stdout]   --> src/day25.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const DOOR_SN: Int = 7;
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `key` and `sn` are never read
[INFO] [stdout]   --> src/day25.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Device {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 20 |     key: PublicKey,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 21 |     sn: Int,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Device` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.57s
[INFO] running `Command { std: "docker" "inspect" "ac61377d506bfcc96486b53b14e554d851f10327efc70925023c4ad72b7d3101", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac61377d506bfcc96486b53b14e554d851f10327efc70925023c4ad72b7d3101", kill_on_drop: false }`
[INFO] [stdout] ac61377d506bfcc96486b53b14e554d851f10327efc70925023c4ad72b7d3101