[INFO] cloning repository https://github.com/skerkewitz/advent_of_code_2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/skerkewitz/advent_of_code_2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fskerkewitz%2Fadvent_of_code_2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fskerkewitz%2Fadvent_of_code_2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5ac3f446ba002d604f78c547806114ac228aa1b7
[INFO] checking skerkewitz/advent_of_code_2020 against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fskerkewitz%2Fadvent_of_code_2020" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/skerkewitz/advent_of_code_2020 on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/skerkewitz/advent_of_code_2020
[INFO] finished tweaking git repo https://github.com/skerkewitz/advent_of_code_2020
[INFO] tweaked toml for git repo https://github.com/skerkewitz/advent_of_code_2020 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/skerkewitz/advent_of_code_2020 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a1ab86c1340b0349d30c48b7b3fe5181482b807b4cff201118f07041c0504a0
[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" "0a1ab86c1340b0349d30c48b7b3fe5181482b807b4cff201118f07041c0504a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a1ab86c1340b0349d30c48b7b3fe5181482b807b4cff201118f07041c0504a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a1ab86c1340b0349d30c48b7b3fe5181482b807b4cff201118f07041c0504a0", kill_on_drop: false }`
[INFO] [stdout] 0a1ab86c1340b0349d30c48b7b3fe5181482b807b4cff201118f07041c0504a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 152ccadffd5d6bd0581b181051ae923d9c28ef762013e5e7d9bd73436dba986f
[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" "152ccadffd5d6bd0581b181051ae923d9c28ef762013e5e7d9bd73436dba986f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling const_fn v0.4.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking rust_day1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::utils`
[INFO] [stdout]  --> src/main_day23.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::utils;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BTreeSet`
[INFO] [stdout]  --> src/main_day23.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::BTreeSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `LinkedList`, `VecDeque`
[INFO] [stdout]  --> src/main_day23.rs:5:24
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::collections::{LinkedList, VecDeque};
[INFO] [stdout]   |                        ^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> src/main_day23.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::SystemTime`
[INFO] [stdout]  --> src/main_day23.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::time::SystemTime;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `max`, `min`
[INFO] [stdout]  --> src/main_day23.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::cmp::{max, min};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> src/main_day23.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::thread;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main_day23.rs:79:19
[INFO] [stdout]    |
[INFO] [stdout] 79 |         } else if (new_current == current) {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> src/utils.rs:1:35
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{BufReader, BufRead, Error};
[INFO] [stdout]   |                                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::utils`
[INFO] [stdout]  --> src/main_day23.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::utils;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BTreeSet`
[INFO] [stdout]  --> src/main_day23.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::BTreeSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `LinkedList`, `VecDeque`
[INFO] [stdout]  --> src/main_day23.rs:5:24
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::collections::{LinkedList, VecDeque};
[INFO] [stdout]   |                        ^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> src/main_day23.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::SystemTime`
[INFO] [stdout]  --> src/main_day23.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::time::SystemTime;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `max`, `min`
[INFO] [stdout]  --> src/main_day23.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::cmp::{max, min};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> src/main_day23.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::thread;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main_day23.rs:79:19
[INFO] [stdout]    |
[INFO] [stdout] 79 |         } else if (new_current == current) {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> src/utils.rs:1:35
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{BufReader, BufRead, Error};
[INFO] [stdout]   |                                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `offset`
[INFO] [stdout]   --> src/main_day23.rs:47:21
[INFO] [stdout]    |
[INFO] [stdout] 47 |         .find_any(|(offset, data)| { 
[INFO] [stdout]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_offset`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `offset`
[INFO] [stdout]   --> src/main_day23.rs:47:21
[INFO] [stdout]    |
[INFO] [stdout] 47 |         .find_any(|(offset, data)| { 
[INFO] [stdout]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_offset`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `result_part1`
[INFO] [stdout]    --> src/main_day23.rs:106:4
[INFO] [stdout]     |
[INFO] [stdout] 106 | fn result_part1(data: &Cups) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_lines_from_file`
[INFO] [stdout]  --> src/utils.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn read_lines_from_file(filename: &str) -> std::io::Result<Vec<String>> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `string_to_number`
[INFO] [stdout]   --> src/utils.rs:14:15
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub(crate) fn string_to_number<T: FromStr>(s: &String) -> T where <T as FromStr>::Err: Debug {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_string_using_regex`
[INFO] [stdout]   --> src/utils.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn parse_string_using_regex(s: &str, regex: &Regex) -> Option<Vec<String>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `assert_and_print_result`
[INFO] [stdout]   --> src/utils.rs:31:15
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub(crate) fn assert_and_print_result<T: Debug + Display + PartialEq>(s: &str, expected: T, actual: T) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused attribute
[INFO] [stdout]  --> src/main_day23.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(map_first_last)]
[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/main_day23.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(map_first_last)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `result_part1`
[INFO] [stdout]    --> src/main_day23.rs:106:4
[INFO] [stdout]     |
[INFO] [stdout] 106 | fn result_part1(data: &Cups) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_lines_from_file`
[INFO] [stdout]  --> src/utils.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn read_lines_from_file(filename: &str) -> std::io::Result<Vec<String>> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `string_to_number`
[INFO] [stdout]   --> src/utils.rs:14:15
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub(crate) fn string_to_number<T: FromStr>(s: &String) -> T where <T as FromStr>::Err: Debug {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_string_using_regex`
[INFO] [stdout]   --> src/utils.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn parse_string_using_regex(s: &str, regex: &Regex) -> Option<Vec<String>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `assert_and_print_result`
[INFO] [stdout]   --> src/utils.rs:31:15
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub(crate) fn assert_and_print_result<T: Debug + Display + PartialEq>(s: &str, expected: T, actual: T) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused attribute
[INFO] [stdout]  --> src/main_day23.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(map_first_last)]
[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/main_day23.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(map_first_last)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.80s
[INFO] running `Command { std: "docker" "inspect" "152ccadffd5d6bd0581b181051ae923d9c28ef762013e5e7d9bd73436dba986f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "152ccadffd5d6bd0581b181051ae923d9c28ef762013e5e7d9bd73436dba986f", kill_on_drop: false }`
[INFO] [stdout] 152ccadffd5d6bd0581b181051ae923d9c28ef762013e5e7d9bd73436dba986f