[INFO] cloning repository https://github.com/nomadeel/aoc_2019
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nomadeel/aoc_2019" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnomadeel%2Faoc_2019", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnomadeel%2Faoc_2019'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8ab5817d12df21ebbc05ee81cfafa0b0865cb0a9
[INFO] testing nomadeel/aoc_2019 against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnomadeel%2Faoc_2019" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nomadeel/aoc_2019 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nomadeel/aoc_2019
[INFO] finished tweaking git repo https://github.com/nomadeel/aoc_2019
[INFO] tweaked toml for git repo https://github.com/nomadeel/aoc_2019 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/nomadeel/aoc_2019 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ee2160c64dde34304d2fb2f502041399ea926f0185d2c661a39b8371f9a67db9
[INFO] running `Command { std: "docker" "start" "-a" "ee2160c64dde34304d2fb2f502041399ea926f0185d2c661a39b8371f9a67db9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee2160c64dde34304d2fb2f502041399ea926f0185d2c661a39b8371f9a67db9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee2160c64dde34304d2fb2f502041399ea926f0185d2c661a39b8371f9a67db9", kill_on_drop: false }`
[INFO] [stdout] ee2160c64dde34304d2fb2f502041399ea926f0185d2c661a39b8371f9a67db9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7b17749cab10054a4eef1c824805ec0985df0b8329855b021bd2b3a88a8d0484
[INFO] running `Command { std: "docker" "start" "-a" "7b17749cab10054a4eef1c824805ec0985df0b8329855b021bd2b3a88a8d0484", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling aoc_2019 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `grid::Grid`
[INFO] [stdout]  --> src/solutions/day20.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     grid::Grid,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BTreeSet`
[INFO] [stdout]  --> src/solutions/day20.rs:6:59
[INFO] [stdout]   |
[INFO] [stdout] 6 |     collections::{HashMap, HashSet, VecDeque, BinaryHeap, BTreeSet},
[INFO] [stdout]   |                                                           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TryRecvError`, `Write`, `stdout`
[INFO] [stdout]   --> src/solutions/day25.rs:9:36
[INFO] [stdout]    |
[INFO] [stdout] 9  |     sync::mpsc::{Sender, Receiver, TryRecvError},
[INFO] [stdout]    |                                    ^^^^^^^^^^^^
[INFO] [stdout] 10 |     io::{stdin, stdout, Write}
[INFO] [stdout]    |                 ^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/solutions/day23.rs:182:9
[INFO] [stdout]     |
[INFO] [stdout] 121 | /         loop {
[INFO] [stdout] 122 | |             // Receive packets from each of the routers
[INFO] [stdout] 123 | |             for i in 0..self.num_routers {
[INFO] [stdout] 124 | |                 loop {
[INFO] [stdout] ...   |
[INFO] [stdout] 179 | |             sent_packets = false;
[INFO] [stdout] 180 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 181 | 
[INFO] [stdout] 182 |           Ok(0)
[INFO] [stdout]     |           ^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max_x`
[INFO] [stdout]   --> src/solutions/day17.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |         let max_x = scaffolding.grid.keys().max_by_key(|p| p.x).unwrap().x;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_max_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max_y`
[INFO] [stdout]   --> src/solutions/day17.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let max_y = scaffolding.grid.keys().max_by_key(|p| p.y).unwrap().y;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_max_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `compacted_path`
[INFO] [stdout]   --> src/solutions/day17.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let compacted_path: String = path.group_by(|a, b| a == b).map(|g| {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_compacted_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/grid.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn new(w: usize, h: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_with`
[INFO] [stdout]   --> src/grid.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn new_with(w: usize, h: usize, val: T) -> Self {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_char`
[INFO] [stdout]    --> src/solutions/day17.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 147 |     fn to_char(&self, d: &Direction) -> char {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print`
[INFO] [stdout]    --> src/solutions/day17.rs:289:8
[INFO] [stdout]     |
[INFO] [stdout] 289 |     fn print(&self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_char`
[INFO] [stdout]   --> src/solutions/day20.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn to_char(&self) -> char {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `handles`
[INFO] [stdout]   --> src/solutions/day23.rs:86:5
[INFO] [stdout]    |
[INFO] [stdout] 86 |     handles: Vec<thread::JoinHandle<()>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_char`
[INFO] [stdout]   --> src/solutions/day24.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn to_char(&self) -> char {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `handle`
[INFO] [stdout]   --> src/solutions/day25.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 69 |     handle: thread::JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_group_by)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aoc_2019` due to 2 previous errors; 15 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "7b17749cab10054a4eef1c824805ec0985df0b8329855b021bd2b3a88a8d0484", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b17749cab10054a4eef1c824805ec0985df0b8329855b021bd2b3a88a8d0484", kill_on_drop: false }`
[INFO] [stdout] 7b17749cab10054a4eef1c824805ec0985df0b8329855b021bd2b3a88a8d0484