[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 1.55.0 for beta-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnomadeel%2Faoc_2019" "/workspace/builds/worker-6/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/nomadeel/aoc_2019 on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-6/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" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e583c483cb8c124f7b2056fe8a4aac13195e26c4dd9a579e9cdd46220c64855b [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" "e583c483cb8c124f7b2056fe8a4aac13195e26c4dd9a579e9cdd46220c64855b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e583c483cb8c124f7b2056fe8a4aac13195e26c4dd9a579e9cdd46220c64855b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e583c483cb8c124f7b2056fe8a4aac13195e26c4dd9a579e9cdd46220c64855b", kill_on_drop: false }` [INFO] [stdout] e583c483cb8c124f7b2056fe8a4aac13195e26c4dd9a579e9cdd46220c64855b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "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] b964dad772f457180cc8e14a67408946af843529c6869c3e218a7eda29d36b89 [INFO] running `Command { std: "docker" "start" "-a" "b964dad772f457180cc8e14a67408946af843529c6869c3e218a7eda29d36b89", kill_on_drop: false }` [INFO] [stderr] Compiling num-bigint v0.4.0 [INFO] [stderr] Compiling num-rational v0.4.0 [INFO] [stderr] Compiling num-complex v0.4.0 [INFO] [stderr] Compiling num-iter v0.1.42 [INFO] [stderr] Compiling num v0.4.0 [INFO] [stderr] Compiling aoc_2019 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/main.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(slice_group_by)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [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] error: aborting due to previous error; 4 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; 4 warnings emitted [INFO] running `Command { std: "docker" "inspect" "b964dad772f457180cc8e14a67408946af843529c6869c3e218a7eda29d36b89", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b964dad772f457180cc8e14a67408946af843529c6869c3e218a7eda29d36b89", kill_on_drop: false }` [INFO] [stdout] b964dad772f457180cc8e14a67408946af843529c6869c3e218a7eda29d36b89