[INFO] cloning repository https://github.com/Riuchando/adventofcode2018
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Riuchando/adventofcode2018" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRiuchando%2Fadventofcode2018", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRiuchando%2Fadventofcode2018'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 53026c56aa3438b9d2b56c6ca5c2d8730070b105
[INFO] testing Riuchando/adventofcode2018 against beta-2020-10-09 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRiuchando%2Fadventofcode2018" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Riuchando/adventofcode2018 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Riuchando/adventofcode2018
[INFO] finished tweaking git repo https://github.com/Riuchando/adventofcode2018
[INFO] tweaked toml for git repo https://github.com/Riuchando/adventofcode2018 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/Riuchando/adventofcode2018 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded daggy v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc734d7ee49e7a0a94ec876f994550952b072703d2be04b281590de37dca4a3e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dc734d7ee49e7a0a94ec876f994550952b072703d2be04b281590de37dca4a3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc734d7ee49e7a0a94ec876f994550952b072703d2be04b281590de37dca4a3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc734d7ee49e7a0a94ec876f994550952b072703d2be04b281590de37dca4a3e", kill_on_drop: false }`
[INFO] [stdout] dc734d7ee49e7a0a94ec876f994550952b072703d2be04b281590de37dca4a3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 678d1c2c138931d8d6fdb32996f09b5634908047ba28b0967ebab6e065bbd6d2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "678d1c2c138931d8d6fdb32996f09b5634908047ba28b0967ebab6e065bbd6d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling daggy v0.6.0
[INFO] [stderr]    Compiling adventofcode2018 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::collections::HashSet;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::Hash`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::hash::Hash;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> src/day4.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/day4.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chrono::prelude::*`
[INFO] [stdout]  --> src/day5.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use chrono::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> src/day5.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/day5.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/day5.rs:56:27
[INFO] [stdout]    |
[INFO] [stdout] 56 |                   } else if (ascii_int as u8 as char == character.to_ascii_uppercase()
[INFO] [stdout]    |  ___________________________^
[INFO] [stdout] 57 | |                     || ascii_int as u8 as char == character.to_ascii_lowercase())
[INFO] [stdout]    | |_________________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 } else if ascii_int as u8 as char == character.to_ascii_uppercase()
[INFO] [stdout] 57 |                     || ascii_int as u8 as char == character.to_ascii_lowercase()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/day5.rs:60:27
[INFO] [stdout]    |
[INFO] [stdout] 60 |                   } else if (match left_vec.last() {
[INFO] [stdout]    |  ___________________________^
[INFO] [stdout] 61 | |                     Some(x) => {
[INFO] [stdout] 62 | |                         (x.is_ascii_uppercase()
[INFO] [stdout] 63 | |                             && character.is_ascii_lowercase()
[INFO] [stdout] ...  |
[INFO] [stdout] 69 | |                     None => false,
[INFO] [stdout] 70 | |                 }) {
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 } else if match left_vec.last() {
[INFO] [stdout] 61 |                     Some(x) => {
[INFO] [stdout] 62 |                         (x.is_ascii_uppercase()
[INFO] [stdout] 63 |                             && character.is_ascii_lowercase()
[INFO] [stdout] 64 |                             && character.to_ascii_uppercase() == *x
[INFO] [stdout] 65 |                             || (left_vec.last().unwrap().is_ascii_lowercase()
[INFO] [stdout]  ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/day5.rs:62:25
[INFO] [stdout]    |
[INFO] [stdout] 62 | /                         (x.is_ascii_uppercase()
[INFO] [stdout] 63 | |                             && character.is_ascii_lowercase()
[INFO] [stdout] 64 | |                             && character.to_ascii_uppercase() == *x
[INFO] [stdout] 65 | |                             || (left_vec.last().unwrap().is_ascii_lowercase()
[INFO] [stdout] 66 | |                                 && character.is_ascii_uppercase()
[INFO] [stdout] 67 | |                                 && character.to_ascii_lowercase() == *left_vec.last().unwrap()))
[INFO] [stdout]    | |________________________________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 62 |                         x.is_ascii_uppercase()
[INFO] [stdout] 63 |                             && character.is_ascii_lowercase()
[INFO] [stdout] 64 |                             && character.to_ascii_uppercase() == *x
[INFO] [stdout] 65 |                             || (left_vec.last().unwrap().is_ascii_lowercase()
[INFO] [stdout] 66 |                                 && character.is_ascii_uppercase()
[INFO] [stdout] 67 |                                 && character.to_ascii_lowercase() == *left_vec.last().unwrap())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chrono::prelude::*`
[INFO] [stdout]  --> src/day6.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use chrono::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/day6.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `petgraph::EdgeType`
[INFO] [stdout]  --> src/day7.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use petgraph::EdgeType;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `dominators`, `has_path_connecting`, `is_cyclic_undirected`, `is_isomorphic_matching`, `min_spanning_tree`
[INFO] [stdout]   --> src/day7.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     dominators, has_path_connecting, is_cyclic_undirected, is_isomorphic_matching,
[INFO] [stdout]    |     ^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 15 |     min_spanning_tree,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `petgraph::graph::node_index as n`
[INFO] [stdout]   --> src/day7.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use petgraph::graph::node_index as n;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DfsSpace`, `astar`, `dijkstra`
[INFO] [stdout]   --> src/day7.rs:21:22
[INFO] [stdout]    |
[INFO] [stdout] 21 | use petgraph::algo::{astar, dijkstra, DfsSpace};
[INFO] [stdout]    |                      ^^^^^  ^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IntoNodeIdentifiers`, `NodeFiltered`, `Reversed`, `Topo`, `VisitMap`, `Walker`
[INFO] [stdout]   --> src/day7.rs:23:20
[INFO] [stdout]    |
[INFO] [stdout] 23 |     IntoNeighbors, IntoNodeIdentifiers, NodeFiltered, Reversed, Topo, VisitMap, Walker,
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^  ^^^^  ^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `petgraph::dot::Dot`
[INFO] [stdout]   --> src/day7.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use petgraph::dot::Dot;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]   --> src/day7.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use std::collections::HashSet;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::Hash`
[INFO] [stdout]   --> src/day7.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | use std::hash::Hash;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `petgraph::prelude::*`
[INFO] [stdout]   --> src/day7.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | use petgraph::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `petgraph::graph::IndexType`
[INFO] [stdout]   --> src/day7.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use petgraph::graph::IndexType;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IntoNeighbors`
[INFO] [stdout]   --> src/day7.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     IntoNeighbors, IntoNodeIdentifiers, NodeFiltered, Reversed, Topo, VisitMap, Walker,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/day6.rs:186:42
[INFO] [stdout]     |
[INFO] [stdout] 186 |     Ok(match index_sizes.iter().max_by(|(k, v), (a, b)| v.cmp(a)) {
[INFO] [stdout]     |                                          ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/day6.rs:186:53
[INFO] [stdout]     |
[INFO] [stdout] 186 |     Ok(match index_sizes.iter().max_by(|(k, v), (a, b)| v.cmp(a)) {
[INFO] [stdout]     |                                                     ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/day7.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |     let f = BufReader::new(f);
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day6.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut ring = 0;
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `part1_wavefront`
[INFO] [stdout]   --> src/day6.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn part1_wavefront() -> Result<u32, Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused attribute
[INFO] [stdout]  --> src/day7.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(extern_prelude)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate-level attribute should be in the root module
[INFO] [stdout]  --> src/day7.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(extern_prelude)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 30 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.17s
[INFO] running `Command { std: "docker" "inspect" "678d1c2c138931d8d6fdb32996f09b5634908047ba28b0967ebab6e065bbd6d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "678d1c2c138931d8d6fdb32996f09b5634908047ba28b0967ebab6e065bbd6d2", kill_on_drop: false }`
[INFO] [stdout] 678d1c2c138931d8d6fdb32996f09b5634908047ba28b0967ebab6e065bbd6d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc0cedfff825cf184f76451c2dc98a18f854fbf7bfd006a84d8e5d3aeda0386b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bc0cedfff825cf184f76451c2dc98a18f854fbf7bfd006a84d8e5d3aeda0386b", kill_on_drop: false }`
[INFO] [stderr]    Compiling adventofcode2018 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::collections::HashSet;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::Hash`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::hash::Hash;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> src/day4.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/day4.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chrono::prelude::*`
[INFO] [stdout]  --> src/day5.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use chrono::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> src/day5.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/day5.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/day5.rs:56:27
[INFO] [stdout]    |
[INFO] [stdout] 56 |                   } else if (ascii_int as u8 as char == character.to_ascii_uppercase()
[INFO] [stdout]    |  ___________________________^
[INFO] [stdout] 57 | |                     || ascii_int as u8 as char == character.to_ascii_lowercase())
[INFO] [stdout]    | |_________________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 } else if ascii_int as u8 as char == character.to_ascii_uppercase()
[INFO] [stdout] 57 |                     || ascii_int as u8 as char == character.to_ascii_lowercase()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/day5.rs:60:27
[INFO] [stdout]    |
[INFO] [stdout] 60 |                   } else if (match left_vec.last() {
[INFO] [stdout]    |  ___________________________^
[INFO] [stdout] 61 | |                     Some(x) => {
[INFO] [stdout] 62 | |                         (x.is_ascii_uppercase()
[INFO] [stdout] 63 | |                             && character.is_ascii_lowercase()
[INFO] [stdout] ...  |
[INFO] [stdout] 69 | |                     None => false,
[INFO] [stdout] 70 | |                 }) {
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 } else if match left_vec.last() {
[INFO] [stdout] 61 |                     Some(x) => {
[INFO] [stdout] 62 |                         (x.is_ascii_uppercase()
[INFO] [stdout] 63 |                             && character.is_ascii_lowercase()
[INFO] [stdout] 64 |                             && character.to_ascii_uppercase() == *x
[INFO] [stdout] 65 |                             || (left_vec.last().unwrap().is_ascii_lowercase()
[INFO] [stdout]  ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/day5.rs:62:25
[INFO] [stdout]    |
[INFO] [stdout] 62 | /                         (x.is_ascii_uppercase()
[INFO] [stdout] 63 | |                             && character.is_ascii_lowercase()
[INFO] [stdout] 64 | |                             && character.to_ascii_uppercase() == *x
[INFO] [stdout] 65 | |                             || (left_vec.last().unwrap().is_ascii_lowercase()
[INFO] [stdout] 66 | |                                 && character.is_ascii_uppercase()
[INFO] [stdout] 67 | |                                 && character.to_ascii_lowercase() == *left_vec.last().unwrap()))
[INFO] [stdout]    | |________________________________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 62 |                         x.is_ascii_uppercase()
[INFO] [stdout] 63 |                             && character.is_ascii_lowercase()
[INFO] [stdout] 64 |                             && character.to_ascii_uppercase() == *x
[INFO] [stdout] 65 |                             || (left_vec.last().unwrap().is_ascii_lowercase()
[INFO] [stdout] 66 |                                 && character.is_ascii_uppercase()
[INFO] [stdout] 67 |                                 && character.to_ascii_lowercase() == *left_vec.last().unwrap())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chrono::prelude::*`
[INFO] [stdout]  --> src/day6.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use chrono::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/day6.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `petgraph::EdgeType`
[INFO] [stdout]  --> src/day7.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use petgraph::EdgeType;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `dominators`, `has_path_connecting`, `is_cyclic_undirected`, `is_isomorphic_matching`, `min_spanning_tree`
[INFO] [stdout]   --> src/day7.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     dominators, has_path_connecting, is_cyclic_undirected, is_isomorphic_matching,
[INFO] [stdout]    |     ^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 15 |     min_spanning_tree,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `petgraph::graph::node_index as n`
[INFO] [stdout]   --> src/day7.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use petgraph::graph::node_index as n;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DfsSpace`, `astar`, `dijkstra`
[INFO] [stdout]   --> src/day7.rs:21:22
[INFO] [stdout]    |
[INFO] [stdout] 21 | use petgraph::algo::{astar, dijkstra, DfsSpace};
[INFO] [stdout]    |                      ^^^^^  ^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IntoNodeIdentifiers`, `NodeFiltered`, `Reversed`, `Topo`, `VisitMap`, `Walker`
[INFO] [stdout]   --> src/day7.rs:23:20
[INFO] [stdout]    |
[INFO] [stdout] 23 |     IntoNeighbors, IntoNodeIdentifiers, NodeFiltered, Reversed, Topo, VisitMap, Walker,
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^  ^^^^  ^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `petgraph::dot::Dot`
[INFO] [stdout]   --> src/day7.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use petgraph::dot::Dot;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]   --> src/day7.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use std::collections::HashSet;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::Hash`
[INFO] [stdout]   --> src/day7.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | use std::hash::Hash;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `petgraph::prelude::*`
[INFO] [stdout]   --> src/day7.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | use petgraph::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `petgraph::graph::IndexType`
[INFO] [stdout]   --> src/day7.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use petgraph::graph::IndexType;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IntoNeighbors`
[INFO] [stdout]   --> src/day7.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     IntoNeighbors, IntoNodeIdentifiers, NodeFiltered, Reversed, Topo, VisitMap, Walker,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/day6.rs:186:42
[INFO] [stdout]     |
[INFO] [stdout] 186 |     Ok(match index_sizes.iter().max_by(|(k, v), (a, b)| v.cmp(a)) {
[INFO] [stdout]     |                                          ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/day6.rs:186:53
[INFO] [stdout]     |
[INFO] [stdout] 186 |     Ok(match index_sizes.iter().max_by(|(k, v), (a, b)| v.cmp(a)) {
[INFO] [stdout]     |                                                     ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/day7.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |     let f = BufReader::new(f);
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day6.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut ring = 0;
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `part1_wavefront`
[INFO] [stdout]   --> src/day6.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn part1_wavefront() -> Result<u32, Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused attribute
[INFO] [stdout]  --> src/day7.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(extern_prelude)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate-level attribute should be in the root module
[INFO] [stdout]  --> src/day7.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(extern_prelude)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.23s
[INFO] [stdout] warning: 30 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "bc0cedfff825cf184f76451c2dc98a18f854fbf7bfd006a84d8e5d3aeda0386b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc0cedfff825cf184f76451c2dc98a18f854fbf7bfd006a84d8e5d3aeda0386b", kill_on_drop: false }`
[INFO] [stdout] bc0cedfff825cf184f76451c2dc98a18f854fbf7bfd006a84d8e5d3aeda0386b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6285bbc48ebf81c29adc8b7a041bf7186353658a98ddc10f36ecaa9f80dca5c6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6285bbc48ebf81c29adc8b7a041bf7186353658a98ddc10f36ecaa9f80dca5c6", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::collections::HashSet;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::hash::Hash`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::hash::Hash;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `itertools::Itertools`
[INFO] [stderr]  --> src/day4.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use itertools::Itertools;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::Ordering`
[INFO] [stderr]  --> src/day4.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::cmp::Ordering;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `chrono::prelude::*`
[INFO] [stderr]  --> src/day5.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use chrono::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `itertools::Itertools`
[INFO] [stderr]  --> src/day5.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use itertools::Itertools;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::Ordering`
[INFO] [stderr]  --> src/day5.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::cmp::Ordering;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/day5.rs:56:27
[INFO] [stderr]    |
[INFO] [stderr] 56 |                   } else if (ascii_int as u8 as char == character.to_ascii_uppercase()
[INFO] [stderr]    |  ___________________________^
[INFO] [stderr] 57 | |                     || ascii_int as u8 as char == character.to_ascii_lowercase())
[INFO] [stderr]    | |_________________________________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 56 |                 } else if ascii_int as u8 as char == character.to_ascii_uppercase()
[INFO] [stderr] 57 |                     || ascii_int as u8 as char == character.to_ascii_lowercase()
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/day5.rs:60:27
[INFO] [stderr]    |
[INFO] [stderr] 60 |                   } else if (match left_vec.last() {
[INFO] [stderr]    |  ___________________________^
[INFO] [stderr] 61 | |                     Some(x) => {
[INFO] [stderr] 62 | |                         (x.is_ascii_uppercase()
[INFO] [stderr] 63 | |                             && character.is_ascii_lowercase()
[INFO] [stderr] ...  |
[INFO] [stderr] 69 | |                     None => false,
[INFO] [stderr] 70 | |                 }) {
[INFO] [stderr]    | |__________________^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 60 |                 } else if match left_vec.last() {
[INFO] [stderr] 61 |                     Some(x) => {
[INFO] [stderr] 62 |                         (x.is_ascii_uppercase()
[INFO] [stderr] 63 |                             && character.is_ascii_lowercase()
[INFO] [stderr] 64 |                             && character.to_ascii_uppercase() == *x
[INFO] [stderr] 65 |                             || (left_vec.last().unwrap().is_ascii_lowercase()
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/day5.rs:62:25
[INFO] [stderr]    |
[INFO] [stderr] 62 | /                         (x.is_ascii_uppercase()
[INFO] [stderr] 63 | |                             && character.is_ascii_lowercase()
[INFO] [stderr] 64 | |                             && character.to_ascii_uppercase() == *x
[INFO] [stderr] 65 | |                             || (left_vec.last().unwrap().is_ascii_lowercase()
[INFO] [stderr] 66 | |                                 && character.is_ascii_uppercase()
[INFO] [stderr] 67 | |                                 && character.to_ascii_lowercase() == *left_vec.last().unwrap()))
[INFO] [stderr]    | |________________________________________________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 62 |                         x.is_ascii_uppercase()
[INFO] [stderr] 63 |                             && character.is_ascii_lowercase()
[INFO] [stderr] 64 |                             && character.to_ascii_uppercase() == *x
[INFO] [stderr] 65 |                             || (left_vec.last().unwrap().is_ascii_lowercase()
[INFO] [stderr] 66 |                                 && character.is_ascii_uppercase()
[INFO] [stderr] 67 |                                 && character.to_ascii_lowercase() == *left_vec.last().unwrap())
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `chrono::prelude::*`
[INFO] [stderr]  --> src/day6.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use chrono::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::Ordering`
[INFO] [stderr]  --> src/day6.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::cmp::Ordering;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `petgraph::EdgeType`
[INFO] [stderr]  --> src/day7.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use petgraph::EdgeType;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `dominators`, `has_path_connecting`, `is_cyclic_undirected`, `is_isomorphic_matching`, `min_spanning_tree`
[INFO] [stderr]   --> src/day7.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     dominators, has_path_connecting, is_cyclic_undirected, is_isomorphic_matching,
[INFO] [stderr]    |     ^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 15 |     min_spanning_tree,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `petgraph::graph::node_index as n`
[INFO] [stderr]   --> src/day7.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use petgraph::graph::node_index as n;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `DfsSpace`, `astar`, `dijkstra`
[INFO] [stderr]   --> src/day7.rs:21:22
[INFO] [stderr]    |
[INFO] [stderr] 21 | use petgraph::algo::{astar, dijkstra, DfsSpace};
[INFO] [stderr]    |                      ^^^^^  ^^^^^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `IntoNodeIdentifiers`, `NodeFiltered`, `Reversed`, `Topo`, `VisitMap`, `Walker`
[INFO] [stderr]   --> src/day7.rs:23:20
[INFO] [stderr]    |
[INFO] [stderr] 23 |     IntoNeighbors, IntoNodeIdentifiers, NodeFiltered, Reversed, Topo, VisitMap, Walker,
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^  ^^^^  ^^^^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `petgraph::dot::Dot`
[INFO] [stderr]   --> src/day7.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | use petgraph::dot::Dot;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]   --> src/day7.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 | use std::collections::HashSet;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::hash::Hash`
[INFO] [stderr]   --> src/day7.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 | use std::hash::Hash;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `petgraph::prelude::*`
[INFO] [stderr]   --> src/day7.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 | use petgraph::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `petgraph::graph::IndexType`
[INFO] [stderr]   --> src/day7.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | use petgraph::graph::IndexType;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `IntoNeighbors`
[INFO] [stderr]   --> src/day7.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     IntoNeighbors, IntoNodeIdentifiers, NodeFiltered, Reversed, Topo, VisitMap, Walker,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `k`
[INFO] [stderr]    --> src/day6.rs:186:42
[INFO] [stderr]     |
[INFO] [stderr] 186 |     Ok(match index_sizes.iter().max_by(|(k, v), (a, b)| v.cmp(a)) {
[INFO] [stderr]     |                                          ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/day6.rs:186:53
[INFO] [stderr]     |
[INFO] [stderr] 186 |     Ok(match index_sizes.iter().max_by(|(k, v), (a, b)| v.cmp(a)) {
[INFO] [stderr]     |                                                     ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]    --> src/day7.rs:128:9
[INFO] [stderr]     |
[INFO] [stderr] 128 |     let f = BufReader::new(f);
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day6.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let mut ring = 0;
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `part1_wavefront`
[INFO] [stderr]   --> src/day6.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn part1_wavefront() -> Result<u32, Error> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]  --> src/day7.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(extern_prelude)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate-level attribute should be in the root module
[INFO] [stderr]  --> src/day7.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(extern_prelude)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 30 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/adventofcode2018-e77415c373be4fd1
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6285bbc48ebf81c29adc8b7a041bf7186353658a98ddc10f36ecaa9f80dca5c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6285bbc48ebf81c29adc8b7a041bf7186353658a98ddc10f36ecaa9f80dca5c6", kill_on_drop: false }`
[INFO] [stdout] 6285bbc48ebf81c29adc8b7a041bf7186353658a98ddc10f36ecaa9f80dca5c6
