[INFO] cloning repository https://github.com/benjaminbours/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/benjaminbours/advent-of-code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenjaminbours%2Fadvent-of-code", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenjaminbours%2Fadvent-of-code'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ca3b8e4ccf71a2c85e6357c60b194feee6d94b52
[INFO] building benjaminbours/advent-of-code 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%2Fbenjaminbours%2Fadvent-of-code" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/benjaminbours/advent-of-code 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/benjaminbours/advent-of-code
[INFO] finished tweaking git repo https://github.com/benjaminbours/advent-of-code
[INFO] tweaked toml for git repo https://github.com/benjaminbours/advent-of-code written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/benjaminbours/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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded modinverse v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] da91c6c85dd1d5cef19613ffd9207d5f9182acc363725cef5adc72a6610a9ae5
[INFO] running `Command { std: "docker" "start" "-a" "da91c6c85dd1d5cef19613ffd9207d5f9182acc363725cef5adc72a6610a9ae5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da91c6c85dd1d5cef19613ffd9207d5f9182acc363725cef5adc72a6610a9ae5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da91c6c85dd1d5cef19613ffd9207d5f9182acc363725cef5adc72a6610a9ae5", kill_on_drop: false }`
[INFO] [stdout] da91c6c85dd1d5cef19613ffd9207d5f9182acc363725cef5adc72a6610a9ae5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 8e1329d169cac990e343124154728cae617c21693b0c80bc867733b555c70b1c
[INFO] running `Command { std: "docker" "start" "-a" "8e1329d169cac990e343124154728cae617c21693b0c80bc867733b555c70b1c", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling regex-syntax v0.6.21
[INFO] [stderr]    Compiling day-2 v0.1.0 (/opt/rustwide/workdir/day-2)
[INFO] [stderr]    Compiling day-5 v0.1.0 (/opt/rustwide/workdir/day-5)
[INFO] [stderr]    Compiling day-7 v0.1.0 (/opt/rustwide/workdir/day-7)
[INFO] [stderr]    Compiling day-9 v0.1.0 (/opt/rustwide/workdir/day-9)
[INFO] [stderr]    Compiling day-11 v0.1.0 (/opt/rustwide/workdir/day-11)
[INFO] [stderr]    Compiling day-12 v0.1.0 (/opt/rustwide/workdir/day-12)
[INFO] [stderr]    Compiling day-1 v0.1.0 (/opt/rustwide/workdir/day-1)
[INFO] [stderr]    Compiling day-8 v0.1.0 (/opt/rustwide/workdir/day-8)
[INFO] [stderr]    Compiling day-6 v0.1.0 (/opt/rustwide/workdir/day-6)
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stdout] warning: unnecessary parentheses around `break` value
[INFO] [stdout]   --> day-9/src/main.rs:29:27
[INFO] [stdout]    |
[INFO] [stdout] 29 |                     break (Some(n.to_owned()));
[INFO] [stdout]    |                           ^                  ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 29 -                     break (Some(n.to_owned()));
[INFO] [stdout] 29 +                     break Some(n.to_owned());
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `break` value
[INFO] [stdout]   --> day-9/src/main.rs:33:23
[INFO] [stdout]    |
[INFO] [stdout] 33 |                 break (None);
[INFO] [stdout]    |                       ^    ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 33 -                 break (None);
[INFO] [stdout] 33 +                 break None;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> day-8/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `break` value
[INFO] [stdout]   --> day-8/src/main.rs:94:27
[INFO] [stdout]    |
[INFO] [stdout] 94 |                     break (Err("Loop"));
[INFO] [stdout]    |                           ^           ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 94 -                     break (Err("Loop"));
[INFO] [stdout] 94 +                     break Err("Loop");
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `break` value
[INFO] [stdout]    --> day-8/src/main.rs:114:23
[INFO] [stdout]     |
[INFO] [stdout] 114 |                 break (Ok(accumulator));
[INFO] [stdout]     |                       ^               ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 114 -                 break (Ok(accumulator));
[INFO] [stdout] 114 +                 break Ok(accumulator);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> day-9/src/main.rs:41:56
[INFO] [stdout]    |
[INFO] [stdout] 41 |     numbers.iter().enumerate().for_each(|(index_start, n)| {
[INFO] [stdout]    |                                                        ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `initial_direction`
[INFO] [stdout]   --> day-12/src/main.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 |     initial_direction: Directions,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_initial_direction`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> day-7/src/main.rs:134:21
[INFO] [stdout]     |
[INFO] [stdout] 134 |         .map(|(key, value)| key)
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&i64` instead of cloning the inner type
[INFO] [stdout]   --> day-9/src/main.rs:56:57
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 let smallest = acc.iter().min().unwrap().clone();
[INFO] [stdout]    |                                                         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&i64` instead of cloning the inner type
[INFO] [stdout]   --> day-9/src/main.rs:57:56
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 let biggest = acc.iter().max().unwrap().clone();
[INFO] [stdout]    |                                                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&i64` instead of cloning the inner type
[INFO] [stdout]   --> day-9/src/main.rs:72:49
[INFO] [stdout]    |
[INFO] [stdout] 72 |             .find(|y| (&x != y) && x.clone() + y.clone() == sum.clone())
[INFO] [stdout]    |                                                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `update_direction` is never used
[INFO] [stdout]    --> day-12/src/main.rs:121:4
[INFO] [stdout]     |
[INFO] [stdout] 121 | fn update_direction(direction: &mut Directions, rotation: f64) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part_one` is never used
[INFO] [stdout]   --> day-7/src/main.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn part_one() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `can_contains_shiny` is never used
[INFO] [stdout]    --> day-7/src/main.rs:140:4
[INFO] [stdout]     |
[INFO] [stdout] 140 | fn can_contains_shiny(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stdout] warning: function `part_1` is never used
[INFO] [stdout]   --> day-6/src/main.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn part_1() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `instructions_total_count`
[INFO] [stdout]   --> day-8/src/main.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let instructions_total_count = instructions.iter().count();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_instructions_total_count`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part_one` is never used
[INFO] [stdout]    --> day-8/src/main.rs:121:4
[INFO] [stdout]     |
[INFO] [stdout] 121 | fn part_one() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling day-3 v0.1.0 (/opt/rustwide/workdir/day-3)
[INFO] [stdout] warning: function `print_line` is never used
[INFO] [stdout]   --> day-3/src/main.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn print_line(line: &str, chart: &String, char_index: i32) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling day-10 v0.1.0 (/opt/rustwide/workdir/day-10)
[INFO] [stdout] warning: unused variable: `initial_lines`
[INFO] [stdout]  --> day-10/src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let initial_lines: Vec<i64> = input.lines().map(|x| x.parse::<i64>().unwrap()).collect();
[INFO] [stdout]   |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_initial_lines`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling modinverse v0.1.1
[INFO] [stderr]    Compiling day-13 v0.1.0 (/opt/rustwide/workdir/day-13)
[INFO] [stdout] warning: unused variable: `earliest_timestamp`
[INFO] [stdout]  --> day-13/src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let earliest_timestamp = lines.next().unwrap().parse::<i32>().unwrap();
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_earliest_timestamp`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_earliest_timestamp` is never used
[INFO] [stdout]   --> day-13/src/main.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn find_earliest_timestamp(input: &str) -> i64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_departure` is never used
[INFO] [stdout]   --> day-13/src/main.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn check_departure(timestamp: &i64, bus_id: i64) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vec_compare` is never used
[INFO] [stdout]   --> day-13/src/main.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn vec_compare(va: &Vec<(usize, i32)>, vb: &Vec<(usize, i32)>) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling day-4 v0.1.0 (/opt/rustwide/workdir/day-4)
[INFO] [stderr]    Compiling day-14 v0.1.0 (/opt/rustwide/workdir/day-14)
[INFO] [stdout] warning: unused import: `fmt`
[INFO] [stdout]  --> day-14/src/main.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{collections::HashMap, fmt, fs, iter, u64};
[INFO] [stdout]   |                                 ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.97s
[INFO] running `Command { std: "docker" "inspect" "8e1329d169cac990e343124154728cae617c21693b0c80bc867733b555c70b1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e1329d169cac990e343124154728cae617c21693b0c80bc867733b555c70b1c", kill_on_drop: false }`
[INFO] [stdout] 8e1329d169cac990e343124154728cae617c21693b0c80bc867733b555c70b1c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b02bb84178cf842c78c8fc2a84dc2d7c0b7a0cd451be70e1ed08b3e69aa8ef81
[INFO] running `Command { std: "docker" "start" "-a" "b02bb84178cf842c78c8fc2a84dc2d7c0b7a0cd451be70e1ed08b3e69aa8ef81", kill_on_drop: false }`
[INFO] [stderr]    Compiling day-11 v0.1.0 (/opt/rustwide/workdir/day-11)
[INFO] [stderr]    Compiling day-2 v0.1.0 (/opt/rustwide/workdir/day-2)
[INFO] [stderr]    Compiling day-7 v0.1.0 (/opt/rustwide/workdir/day-7)
[INFO] [stderr]    Compiling day-5 v0.1.0 (/opt/rustwide/workdir/day-5)
[INFO] [stderr]    Compiling day-6 v0.1.0 (/opt/rustwide/workdir/day-6)
[INFO] [stderr]    Compiling day-8 v0.1.0 (/opt/rustwide/workdir/day-8)
[INFO] [stderr]    Compiling day-9 v0.1.0 (/opt/rustwide/workdir/day-9)
[INFO] [stderr]    Compiling day-1 v0.1.0 (/opt/rustwide/workdir/day-1)
[INFO] [stderr]    Compiling day-12 v0.1.0 (/opt/rustwide/workdir/day-12)
[INFO] [stderr]    Compiling day-10 v0.1.0 (/opt/rustwide/workdir/day-10)
[INFO] [stderr]    Compiling day-4 v0.1.0 (/opt/rustwide/workdir/day-4)
[INFO] [stderr]    Compiling day-14 v0.1.0 (/opt/rustwide/workdir/day-14)
[INFO] [stderr]    Compiling day-13 v0.1.0 (/opt/rustwide/workdir/day-13)
[INFO] [stderr]    Compiling day-3 v0.1.0 (/opt/rustwide/workdir/day-3)
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> day-8/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `break` value
[INFO] [stdout]   --> day-9/src/main.rs:29:27
[INFO] [stdout]    |
[INFO] [stdout] 29 |                     break (Some(n.to_owned()));
[INFO] [stdout]    |                           ^                  ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 29 -                     break (Some(n.to_owned()));
[INFO] [stdout] 29 +                     break Some(n.to_owned());
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `break` value
[INFO] [stdout]   --> day-9/src/main.rs:33:23
[INFO] [stdout]    |
[INFO] [stdout] 33 |                 break (None);
[INFO] [stdout]    |                       ^    ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 33 -                 break (None);
[INFO] [stdout] 33 +                 break None;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `break` value
[INFO] [stdout]   --> day-8/src/main.rs:94:27
[INFO] [stdout]    |
[INFO] [stdout] 94 |                     break (Err("Loop"));
[INFO] [stdout]    |                           ^           ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 94 -                     break (Err("Loop"));
[INFO] [stdout] 94 +                     break Err("Loop");
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `break` value
[INFO] [stdout]    --> day-8/src/main.rs:114:23
[INFO] [stdout]     |
[INFO] [stdout] 114 |                 break (Ok(accumulator));
[INFO] [stdout]     |                       ^               ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 114 -                 break (Ok(accumulator));
[INFO] [stdout] 114 +                 break Ok(accumulator);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> day-9/src/main.rs:41:56
[INFO] [stdout]    |
[INFO] [stdout] 41 |     numbers.iter().enumerate().for_each(|(index_start, n)| {
[INFO] [stdout]    |                                                        ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `initial_lines`
[INFO] [stdout]  --> day-10/src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let initial_lines: Vec<i64> = input.lines().map(|x| x.parse::<i64>().unwrap()).collect();
[INFO] [stdout]   |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_initial_lines`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `initial_direction`
[INFO] [stdout]   --> day-12/src/main.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 |     initial_direction: Directions,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_initial_direction`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `earliest_timestamp`
[INFO] [stdout]  --> day-13/src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let earliest_timestamp = lines.next().unwrap().parse::<i32>().unwrap();
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_earliest_timestamp`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `instructions_total_count`
[INFO] [stdout]   --> day-8/src/main.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let instructions_total_count = instructions.iter().count();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_instructions_total_count`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `update_direction` is never used
[INFO] [stdout]    --> day-12/src/main.rs:121:4
[INFO] [stdout]     |
[INFO] [stdout] 121 | fn update_direction(direction: &mut Directions, rotation: f64) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fmt`
[INFO] [stdout]  --> day-14/src/main.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{collections::HashMap, fmt, fs, iter, u64};
[INFO] [stdout]   |                                 ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part_one` is never used
[INFO] [stdout]    --> day-8/src/main.rs:121:4
[INFO] [stdout]     |
[INFO] [stdout] 121 | fn part_one() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&i64` instead of cloning the inner type
[INFO] [stdout]   --> day-9/src/main.rs:56:57
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 let smallest = acc.iter().min().unwrap().clone();
[INFO] [stdout]    |                                                         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&i64` instead of cloning the inner type
[INFO] [stdout]   --> day-9/src/main.rs:57:56
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 let biggest = acc.iter().max().unwrap().clone();
[INFO] [stdout]    |                                                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&i64` instead of cloning the inner type
[INFO] [stdout]   --> day-9/src/main.rs:72:49
[INFO] [stdout]    |
[INFO] [stdout] 72 |             .find(|y| (&x != y) && x.clone() + y.clone() == sum.clone())
[INFO] [stdout]    |                                                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_line` is never used
[INFO] [stdout]   --> day-3/src/main.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn print_line(line: &str, chart: &String, char_index: i32) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part_1` is never used
[INFO] [stdout]   --> day-6/src/main.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn part_1() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> day-7/src/main.rs:134:21
[INFO] [stdout]     |
[INFO] [stdout] 134 |         .map(|(key, value)| key)
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part_one` is never used
[INFO] [stdout]   --> day-7/src/main.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn part_one() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `can_contains_shiny` is never used
[INFO] [stdout]    --> day-7/src/main.rs:140:4
[INFO] [stdout]     |
[INFO] [stdout] 140 | fn can_contains_shiny(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "b02bb84178cf842c78c8fc2a84dc2d7c0b7a0cd451be70e1ed08b3e69aa8ef81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b02bb84178cf842c78c8fc2a84dc2d7c0b7a0cd451be70e1ed08b3e69aa8ef81", kill_on_drop: false }`
[INFO] [stdout] b02bb84178cf842c78c8fc2a84dc2d7c0b7a0cd451be70e1ed08b3e69aa8ef81