[INFO] cloning repository https://github.com/Danmou/advent-of-code-2021-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Danmou/advent-of-code-2021-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanmou%2Fadvent-of-code-2021-rust", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 63ce1fbef1ad92a60baeb680303ca6411a79ab93
[INFO] checking Danmou/advent-of-code-2021-rust against master#a6acf0f07f0ed1c12e26dc0db3b9bf1d0504a0bb for pr-151109
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanmou%2Fadvent-of-code-2021-rust" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Danmou/advent-of-code-2021-rust
[INFO] finished tweaking git repo https://github.com/Danmou/advent-of-code-2021-rust
[INFO] tweaked toml for git repo https://github.com/Danmou/advent-of-code-2021-rust written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Danmou/advent-of-code-2021-rust on toolchain a6acf0f07f0ed1c12e26dc0db3b9bf1d0504a0bb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a6acf0f07f0ed1c12e26dc0db3b9bf1d0504a0bb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Danmou/advent-of-code-2021-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a6acf0f07f0ed1c12e26dc0db3b9bf1d0504a0bb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a6acf0f07f0ed1c12e26dc0db3b9bf1d0504a0bb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0cb169e39ce6452f504192525f668889cfdf94ecd6f524962355d177aa350b56
[INFO] running `Command { std: "docker" "start" "-a" "0cb169e39ce6452f504192525f668889cfdf94ecd6f524962355d177aa350b56", kill_on_drop: false }`
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[INFO] [stdout] 955b49f0064f854058dc4dad9e3785eec244ab80d7262bb5d5067eb721feb370
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[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling siphasher v0.3.7
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]    Compiling rustversion v1.0.5
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking ahash v0.2.19
[INFO] [stderr]     Checking rawpointer v0.2.1
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[INFO] [stderr]     Checking integer-sqrt v0.1.5
[INFO] [stderr]     Checking wyz v0.4.0
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling hashbrown v0.6.3
[INFO] [stderr]     Checking rand_isaac v0.2.0
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[INFO] [stderr]     Checking fixedbitset v0.4.0
[INFO] [stderr]     Checking strum v0.23.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking ndarray v0.15.4
[INFO] [stderr]     Checking pathfinding v3.0.5
[INFO] [stderr]     Checking bitvec v0.22.3
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking graphlib v0.6.3
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]    Compiling phf_generator v0.10.0
[INFO] [stderr]    Compiling phf_macros v0.10.0
[INFO] [stderr]    Compiling strum_macros v0.23.1
[INFO] [stderr]     Checking phf v0.10.0
[INFO] [stderr]     Checking advent-of-code-2021 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]  --> src/bin/aoc17b/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cmp::max;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `best_position` is assigned to, but never used
[INFO] [stdout]   --> src/bin/aoc7b/main.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut best_position = -1;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_best_position` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `best_position` is never read
[INFO] [stdout]   --> src/bin/aoc7b/main.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |             best_position = pos;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `draw_points` is never used
[INFO] [stdout]   --> src/bin/aoc13a/main.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn draw_points(points: &HashSet<(usize, usize)>) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_image` is never used
[INFO] [stdout]   --> src/bin/aoc20b/main.rs:89:4
[INFO] [stdout]    |
[INFO] [stdout] 89 | fn print_image(image: &Image) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `deref_mut` found for reference `&Rc<RefCell<Pair>>` in the current scope
[INFO] [stdout]   --> src/bin/aoc18a/main.rs:88:52
[INFO] [stdout]    |
[INFO] [stdout] 88 |                     c if c.is_digit(10) => current.deref_mut().set_val(c.to_string().parse().unwrap()),
[INFO] [stdout]    |                                                    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `deref` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 88 -                     c if c.is_digit(10) => current.deref_mut().set_val(c.to_string().parse().unwrap()),
[INFO] [stdout] 88 +                     c if c.is_digit(10) => current.deref().set_val(c.to_string().parse().unwrap()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `advent-of-code-2021` (bin "aoc18a") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]   --> src/bin/aoc5a/main.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | impl Map {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 83 |     fn print(&self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around pattern
[INFO] [stdout]   --> src/bin/aoc14b/main.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     for (count) in char_counts.values_mut() {
[INFO] [stdout]    |         ^     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 60 -     for (count) in char_counts.values_mut() {
[INFO] [stdout] 60 +     for count  in char_counts.values_mut() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> src/bin/aoc23a/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/aoc23a/main.rs:461:9
[INFO] [stdout]     |
[INFO] [stdout] 461 |     let mut map = Map::new();
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/aoc12b/main.rs:124:13
[INFO] [stdout]     |
[INFO] [stdout] 124 |         let mut path = queue.pop().unwrap();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `remove_by_val` is never used
[INFO] [stdout]   --> src/bin/aoc12b/main.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | / impl<K, V> BidirectionalMap<K, V>
[INFO] [stdout] 15 | | where
[INFO] [stdout] 16 | |     K: Hash + Eq + Clone,
[INFO] [stdout] 17 | |     V: Hash + Eq + Clone,
[INFO] [stdout]    | |_________________________- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 36 |       fn remove_by_val(&mut self, v: V) -> Option<K> {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/aoc12a/main.rs:116:13
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let mut path = queue.pop().unwrap();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `remove_by_val` is never used
[INFO] [stdout]   --> src/bin/aoc12a/main.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | / impl<K, V> BidirectionalMap<K, V>
[INFO] [stdout] 15 | | where
[INFO] [stdout] 16 | |     K: Hash + Eq + Clone,
[INFO] [stdout] 17 | |     V: Hash + Eq + Clone,
[INFO] [stdout]    | |_________________________- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 36 |       fn remove_by_val(&mut self, v: V) -> Option<K> {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/aoc12a/main.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 |         graph.add_edge(&id1, &id2);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let _ = graph.add_edge(&id1, &id2);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/aoc12b/main.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 |         graph.add_edge(&id1, &id2);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let _ = graph.add_edge(&id1, &id2);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `best_position` is assigned to, but never used
[INFO] [stdout]   --> src/bin/aoc7b/main.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut best_position = -1;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_best_position` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `best_position` is never read
[INFO] [stdout]   --> src/bin/aoc7b/main.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |             best_position = pos;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `draw_points` is never used
[INFO] [stdout]   --> src/bin/aoc13a/main.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn draw_points(points: &HashSet<(usize, usize)>) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "955b49f0064f854058dc4dad9e3785eec244ab80d7262bb5d5067eb721feb370", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "955b49f0064f854058dc4dad9e3785eec244ab80d7262bb5d5067eb721feb370", kill_on_drop: false }`
[INFO] [stdout] 955b49f0064f854058dc4dad9e3785eec244ab80d7262bb5d5067eb721feb370
