[INFO] cloning repository https://github.com/timgluz/aima_8slide
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/timgluz/aima_8slide" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimgluz%2Faima_8slide"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimgluz%2Faima_8slide'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 648624df29abe1c7d9a4074f2e6edb081f9e974b
[INFO] checking timgluz/aima_8slide against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimgluz%2Faima_8slide" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/timgluz/aima_8slide on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/timgluz/aima_8slide
[INFO] finished tweaking git repo https://github.com/timgluz/aima_8slide
[INFO] tweaked toml for git repo https://github.com/timgluz/aima_8slide written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/timgluz/aima_8slide already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 3e1e14ab35dabac99c646ad8f9b64f38ffd7c4d48b2ea21110f8e303fd040721
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "3e1e14ab35dabac99c646ad8f9b64f38ffd7c4d48b2ea21110f8e303fd040721"`
[INFO] [stderr]     Checking aima_8slide v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `SearchProblem`
[INFO] [stderr]  --> src/main.rs:6:26
[INFO] [stderr]   |
[INFO] [stderr] 6 | use search::{SearchNode, SearchProblem};
[INFO] [stderr]   |                          ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_row`
[INFO] [stderr]    --> src/eight_puzzle.rs:196:5
[INFO] [stderr]     |
[INFO] [stderr] 196 |     pub fn from_row(state_row: PuzzleStateRow) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `h`
[INFO] [stderr]    --> src/eight_puzzle.rs:209:5
[INFO] [stderr]     |
[INFO] [stderr] 209 |     fn h(&self) -> u8 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `debug_search_node`
[INFO] [stderr]    --> src/search/uninformed.rs:114:4
[INFO] [stderr]     |
[INFO] [stderr] 114 | fn debug_search_node(current_node: &SearchNode) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SearchProblem`
[INFO] [stderr]  --> src/main.rs:6:26
[INFO] [stderr]   |
[INFO] [stderr] 6 | use search::{SearchNode, SearchProblem};
[INFO] [stderr]   |                          ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `action`
[INFO] [stderr]    --> src/search/frontiers.rs:117:26
[INFO] [stderr]     |
[INFO] [stderr] 117 |         fn result(&self, action: &Action) -> Box<dyn SearchProblem> {
[INFO] [stderr]     |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_action`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `debug_search_node`
[INFO] [stderr]    --> src/search/uninformed.rs:114:4
[INFO] [stderr]     |
[INFO] [stderr] 114 | fn debug_search_node(current_node: &SearchNode) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `"docker" "inspect" "3e1e14ab35dabac99c646ad8f9b64f38ffd7c4d48b2ea21110f8e303fd040721"`
[INFO] running `"docker" "rm" "-f" "3e1e14ab35dabac99c646ad8f9b64f38ffd7c4d48b2ea21110f8e303fd040721"`
[INFO] [stdout] 3e1e14ab35dabac99c646ad8f9b64f38ffd7c4d48b2ea21110f8e303fd040721