[INFO] updating cached repository https://github.com/ChristianPomales/ai_homework
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d63eab064b2d2b5e0d9e178982b11b2397480cd0
[INFO] checking ChristianPomales/ai_homework against master#8ac1525e091d3db28e67adcbbd6db1e1deaa37fb for pr-73323
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChristianPomales%2Fai_homework" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ChristianPomales/ai_homework on toolchain 8ac1525e091d3db28e67adcbbd6db1e1deaa37fb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ChristianPomales/ai_homework
[INFO] finished tweaking git repo https://github.com/ChristianPomales/ai_homework
[INFO] tweaked toml for git repo https://github.com/ChristianPomales/ai_homework written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/ChristianPomales/ai_homework already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84f971b6e23f8cc7751f7f3314a5dfc0b70bb88c6aa0be58cf07046bf7f02481
[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" "84f971b6e23f8cc7751f7f3314a5dfc0b70bb88c6aa0be58cf07046bf7f02481", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84f971b6e23f8cc7751f7f3314a5dfc0b70bb88c6aa0be58cf07046bf7f02481", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84f971b6e23f8cc7751f7f3314a5dfc0b70bb88c6aa0be58cf07046bf7f02481", kill_on_drop: false }`
[INFO] [stdout] 84f971b6e23f8cc7751f7f3314a5dfc0b70bb88c6aa0be58cf07046bf7f02481
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79ecaaea95cb31fd7e2b9f2add8fabf0bc3fc01beab2ef672480b3daa303108e
[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" "79ecaaea95cb31fd7e2b9f2add8fabf0bc3fc01beab2ef672480b3daa303108e", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling num-bigint v0.2.0
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking rand_core v0.2.2
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking ai_homework v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/main.rs:467:39
[INFO] [stdout]     |
[INFO] [stdout] 467 |     let mut first_row = String::new();;
[INFO] [stdout]     |                                       ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/main.rs:471:40
[INFO] [stdout]     |
[INFO] [stdout] 471 |     let mut second_row = String::new();;
[INFO] [stdout]     |                                        ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/main.rs:475:39
[INFO] [stdout]     |
[INFO] [stdout] 475 |     let mut third_row = String::new();;
[INFO] [stdout]     |                                       ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/main.rs:549:46
[INFO] [stdout]     |
[INFO] [stdout] 549 |     let mut difficulty_input = String::new();;
[INFO] [stdout]     |                                              ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/main.rs:618:43
[INFO] [stdout]     |
[INFO] [stdout] 618 |     let mut puzzle_option = String::new();;
[INFO] [stdout]     |                                           ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/main.rs:668:45
[INFO] [stdout]     |
[INFO] [stdout] 668 |     let mut heuristic_input = String::new();;
[INFO] [stdout]     |                                             ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/main.rs:467:39
[INFO] [stdout]     |
[INFO] [stdout] 467 |     let mut first_row = String::new();;
[INFO] [stdout]     |                                       ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/main.rs:471:40
[INFO] [stdout]     |
[INFO] [stdout] 471 |     let mut second_row = String::new();;
[INFO] [stdout]     |                                        ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/main.rs:475:39
[INFO] [stdout]     |
[INFO] [stdout] 475 |     let mut third_row = String::new();;
[INFO] [stdout]     |                                       ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/main.rs:549:46
[INFO] [stdout]     |
[INFO] [stdout] 549 |     let mut difficulty_input = String::new();;
[INFO] [stdout]     |                                              ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/main.rs:618:43
[INFO] [stdout]     |
[INFO] [stdout] 618 |     let mut puzzle_option = String::new();;
[INFO] [stdout]     |                                           ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/main.rs:668:45
[INFO] [stdout]     |
[INFO] [stdout] 668 |     let mut heuristic_input = String::new();;
[INFO] [stdout]     |                                             ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.20s
[INFO] running `Command { std: "docker" "inspect" "79ecaaea95cb31fd7e2b9f2add8fabf0bc3fc01beab2ef672480b3daa303108e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79ecaaea95cb31fd7e2b9f2add8fabf0bc3fc01beab2ef672480b3daa303108e", kill_on_drop: false }`
[INFO] [stdout] 79ecaaea95cb31fd7e2b9f2add8fabf0bc3fc01beab2ef672480b3daa303108e