[INFO] cloning repository https://github.com/br0uQ/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/br0uQ/advent_of_code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbr0uQ%2Fadvent_of_code", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbr0uQ%2Fadvent_of_code'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fa5260c78e0b884567cc73d818279e54b05c585e
[INFO] checking br0uQ/advent_of_code against master#1280928a99ad3ef2c5735b42dc8852456ae3b974 for pr-120798
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbr0uQ%2Fadvent_of_code" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/br0uQ/advent_of_code on toolchain 1280928a99ad3ef2c5735b42dc8852456ae3b974
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1280928a99ad3ef2c5735b42dc8852456ae3b974" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/br0uQ/advent_of_code
[INFO] finished tweaking git repo https://github.com/br0uQ/advent_of_code
[INFO] tweaked toml for git repo https://github.com/br0uQ/advent_of_code written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/br0uQ/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" "+1280928a99ad3ef2c5735b42dc8852456ae3b974" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking br0uQ/advent_of_code against try#9b9e20bc79549d80ab413f49d990713851172cc1 for pr-120798
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbr0uQ%2Fadvent_of_code" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/br0uQ/advent_of_code on toolchain 9b9e20bc79549d80ab413f49d990713851172cc1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9b9e20bc79549d80ab413f49d990713851172cc1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/br0uQ/advent_of_code
[INFO] finished tweaking git repo https://github.com/br0uQ/advent_of_code
[INFO] tweaked toml for git repo https://github.com/br0uQ/advent_of_code written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/br0uQ/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" "+9b9e20bc79549d80ab413f49d990713851172cc1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+9b9e20bc79549d80ab413f49d990713851172cc1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b1f99d03308ebae2a2f4f8e2d1269daa0c365de968dcc16412dd90a1deb99b3
[INFO] running `Command { std: "docker" "start" "-a" "3b1f99d03308ebae2a2f4f8e2d1269daa0c365de968dcc16412dd90a1deb99b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b1f99d03308ebae2a2f4f8e2d1269daa0c365de968dcc16412dd90a1deb99b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b1f99d03308ebae2a2f4f8e2d1269daa0c365de968dcc16412dd90a1deb99b3", kill_on_drop: false }`
[INFO] [stdout] 3b1f99d03308ebae2a2f4f8e2d1269daa0c365de968dcc16412dd90a1deb99b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+9b9e20bc79549d80ab413f49d990713851172cc1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5cb5085c6b67dd570826a5670a83557625b8a4f4150906b69fa73dcb34aa9199
[INFO] running `Command { std: "docker" "start" "-a" "5cb5085c6b67dd570826a5670a83557625b8a4f4150906b69fa73dcb34aa9199", kill_on_drop: false }`
[INFO] [stderr]     Checking advent_of_code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `borrow::BorrowMut`, `cell::RefCell`, `rc::Rc`
[INFO] [stdout]  --> src/day_08.rs:1:48
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::HashMap, time::Instant, rc::Rc, cell::RefCell, borrow::BorrowMut};
[INFO] [stdout]   |                                                ^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `borrow::BorrowMut`, `cell::RefCell`, `rc::Rc`
[INFO] [stdout]  --> src/day_08.rs:1:48
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::HashMap, time::Instant, rc::Rc, cell::RefCell, borrow::BorrowMut};
[INFO] [stdout]   |                                                ^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `zcount` is never read
[INFO] [stdout]   --> src/day_08.rs:78:13
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let mut zcount: usize = 0;
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `instructions`
[INFO] [stdout]    --> src/day_08.rs:146:13
[INFO] [stdout]     |
[INFO] [stdout] 146 |     let mut instructions = instructions_string.chars();
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_instructions`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/day_08.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |     let mut instructions = instructions_string.chars();
[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: value assigned to `zcount` is never read
[INFO] [stdout]   --> src/day_08.rs:78:13
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let mut zcount: usize = 0;
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `instructions`
[INFO] [stdout]    --> src/day_08.rs:146:13
[INFO] [stdout]     |
[INFO] [stdout] 146 |     let mut instructions = instructions_string.chars();
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_instructions`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/day_08.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |     let mut instructions = instructions_string.chars();
[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 `part2` is never used
[INFO] [stdout]   --> src/day_08.rs:57:4
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn part2(input: String) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_z` is never used
[INFO] [stdout]    --> src/day_08.rs:264:4
[INFO] [stdout]     |
[INFO] [stdout] 264 | fn count_z(nodes: &Vec<String>) -> usize {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `all_end_with_z` is never used
[INFO] [stdout]    --> src/day_08.rs:274:4
[INFO] [stdout]     |
[INFO] [stdout] 274 | fn all_end_with_z(nodes: &Vec<String>) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_first_nodes` is never used
[INFO] [stdout]    --> src/day_08.rs:283:4
[INFO] [stdout]     |
[INFO] [stdout] 283 | fn find_first_nodes(nodes: &HashMap<String, (String, String)>) -> Vec<String> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part2` is never used
[INFO] [stdout]   --> src/day_08.rs:57:4
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn part2(input: String) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_z` is never used
[INFO] [stdout]    --> src/day_08.rs:264:4
[INFO] [stdout]     |
[INFO] [stdout] 264 | fn count_z(nodes: &Vec<String>) -> usize {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `all_end_with_z` is never used
[INFO] [stdout]    --> src/day_08.rs:274:4
[INFO] [stdout]     |
[INFO] [stdout] 274 | fn all_end_with_z(nodes: &Vec<String>) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_first_nodes` is never used
[INFO] [stdout]    --> src/day_08.rs:283:4
[INFO] [stdout]     |
[INFO] [stdout] 283 | fn find_first_nodes(nodes: &HashMap<String, (String, String)>) -> Vec<String> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "5cb5085c6b67dd570826a5670a83557625b8a4f4150906b69fa73dcb34aa9199", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cb5085c6b67dd570826a5670a83557625b8a4f4150906b69fa73dcb34aa9199", kill_on_drop: false }`
[INFO] [stdout] 5cb5085c6b67dd570826a5670a83557625b8a4f4150906b69fa73dcb34aa9199