[INFO] cloning repository https://github.com/dwuggh/15-puzzle-helper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dwuggh/15-puzzle-helper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdwuggh%2F15-puzzle-helper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdwuggh%2F15-puzzle-helper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1e78a92114373712e51f5d9a51d234554a764052
[INFO] checking dwuggh/15-puzzle-helper against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdwuggh%2F15-puzzle-helper" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dwuggh/15-puzzle-helper on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dwuggh/15-puzzle-helper
[INFO] finished tweaking git repo https://github.com/dwuggh/15-puzzle-helper
[INFO] tweaked toml for git repo https://github.com/dwuggh/15-puzzle-helper written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/dwuggh/15-puzzle-helper already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a4965d19e41bd2a43a47a6be630676f589d5b01dd659d813ca93ce22173a470
[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" "2a4965d19e41bd2a43a47a6be630676f589d5b01dd659d813ca93ce22173a470", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a4965d19e41bd2a43a47a6be630676f589d5b01dd659d813ca93ce22173a470", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a4965d19e41bd2a43a47a6be630676f589d5b01dd659d813ca93ce22173a470", kill_on_drop: false }`
[INFO] [stdout] 2a4965d19e41bd2a43a47a6be630676f589d5b01dd659d813ca93ce22173a470
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--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] 615c2d9a7bc219b1d940d75c483ab0749b817bb80bf704451829c92db6998f1a
[INFO] running `Command { std: "docker" "start" "-a" "615c2d9a7bc219b1d940d75c483ab0749b817bb80bf704451829c92db6998f1a", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.44
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking os_str_bytes v2.3.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking textwrap v0.12.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]     Checking clap v3.0.0-beta.2
[INFO] [stderr]     Checking fifteen-puzzle-helper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `GameBoard`
[INFO] [stdout]  --> src/lib/scrambler.rs:7:27
[INFO] [stdout]   |
[INFO] [stdout] 7 | use super::types::{Board, GameBoard};
[INFO] [stdout]   |                           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Traditional_A_Star` should have an upper camel case name
[INFO] [stdout]  --> src/lib/solver.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Traditional_A_Star,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `TraditionalAStar`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Rank_Reduction` should have an upper camel case name
[INFO] [stdout]   --> src/lib/solver.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Rank_Reduction,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `RankReduction`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GameBoard`
[INFO] [stdout]  --> src/lib/scrambler.rs:7:27
[INFO] [stdout]   |
[INFO] [stdout] 7 | use super::types::{Board, GameBoard};
[INFO] [stdout]   |                           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Traditional_A_Star` should have an upper camel case name
[INFO] [stdout]  --> src/lib/solver.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Traditional_A_Star,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `TraditionalAStar`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Rank_Reduction` should have an upper camel case name
[INFO] [stdout]   --> src/lib/solver.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Rank_Reduction,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `RankReduction`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `style`
[INFO] [stdout]   --> src/main.rs:80:7
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let style = sub_scm.value_of("print-style").unwrap();
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_style`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `revert`
[INFO] [stdout]   --> src/lib/types/mov.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn revert(&self) -> Move {
[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: `manhattan_dist`
[INFO] [stdout]   --> src/lib/types/board.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn manhattan_dist(&self) -> u64 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Traditional_A_Star`
[INFO] [stdout]  --> src/lib/solver.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Traditional_A_Star,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `subcmd`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     subcmd: SubCmd,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `style`
[INFO] [stdout]   --> src/main.rs:80:7
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let style = sub_scm.value_of("print-style").unwrap();
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_style`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `revert`
[INFO] [stdout]   --> src/lib/types/mov.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn revert(&self) -> Move {
[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: `manhattan_dist`
[INFO] [stdout]   --> src/lib/types/board.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn manhattan_dist(&self) -> u64 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Traditional_A_Star`
[INFO] [stdout]  --> src/lib/solver.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Traditional_A_Star,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `subcmd`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     subcmd: SubCmd,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.62s
[INFO] running `Command { std: "docker" "inspect" "615c2d9a7bc219b1d940d75c483ab0749b817bb80bf704451829c92db6998f1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "615c2d9a7bc219b1d940d75c483ab0749b817bb80bf704451829c92db6998f1a", kill_on_drop: false }`
[INFO] [stdout] 615c2d9a7bc219b1d940d75c483ab0749b817bb80bf704451829c92db6998f1a