[INFO] updating cached repository https://github.com/ChristianPomales/ai_homework
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d63eab064b2d2b5e0d9e178982b11b2397480cd0
[INFO] checking ChristianPomales/ai_homework against master#b61e69433951e31f7bd746e22f516a48ad41623b for prs-64470-and-65389
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChristianPomales%2Fai_homework" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ChristianPomales/ai_homework on toolchain b61e69433951e31f7bd746e22f516a48ad41623b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-11/source/Cargo.toml
[INFO] crate git repo https://github.com/ChristianPomales/ai_homework already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+b61e69433951e31f7bd746e22f516a48ad41623b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4963cb778f843284292d0cb3031adac7c0378462eab84a17bbe52d8950119252
[INFO] running `"docker" "start" "-a" "4963cb778f843284292d0cb3031adac7c0378462eab84a17bbe52d8950119252"`
[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-iter v0.1.37
[INFO] [stderr]    Compiling num-complex v0.2.1
[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] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/main.rs:467:39
[INFO] [stderr]     |
[INFO] [stderr] 467 |     let mut first_row = String::new();;
[INFO] [stderr]     |                                       ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolon)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/main.rs:471:40
[INFO] [stderr]     |
[INFO] [stderr] 471 |     let mut second_row = String::new();;
[INFO] [stderr]     |                                        ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/main.rs:475:39
[INFO] [stderr]     |
[INFO] [stderr] 475 |     let mut third_row = String::new();;
[INFO] [stderr]     |                                       ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/main.rs:549:46
[INFO] [stderr]     |
[INFO] [stderr] 549 |     let mut difficulty_input = String::new();;
[INFO] [stderr]     |                                              ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/main.rs:618:43
[INFO] [stderr]     |
[INFO] [stderr] 618 |     let mut puzzle_option = String::new();;
[INFO] [stderr]     |                                           ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/main.rs:668:45
[INFO] [stderr]     |
[INFO] [stderr] 668 |     let mut heuristic_input = String::new();;
[INFO] [stderr]     |                                             ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/main.rs:467:39
[INFO] [stderr]     |
[INFO] [stderr] 467 |     let mut first_row = String::new();;
[INFO] [stderr]     |                                       ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolon)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/main.rs:471:40
[INFO] [stderr]     |
[INFO] [stderr] 471 |     let mut second_row = String::new();;
[INFO] [stderr]     |                                        ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/main.rs:475:39
[INFO] [stderr]     |
[INFO] [stderr] 475 |     let mut third_row = String::new();;
[INFO] [stderr]     |                                       ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/main.rs:549:46
[INFO] [stderr]     |
[INFO] [stderr] 549 |     let mut difficulty_input = String::new();;
[INFO] [stderr]     |                                              ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/main.rs:618:43
[INFO] [stderr]     |
[INFO] [stderr] 618 |     let mut puzzle_option = String::new();;
[INFO] [stderr]     |                                           ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/main.rs:668:45
[INFO] [stderr]     |
[INFO] [stderr] 668 |     let mut heuristic_input = String::new();;
[INFO] [stderr]     |                                             ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.45s
[INFO] running `"docker" "inspect" "4963cb778f843284292d0cb3031adac7c0378462eab84a17bbe52d8950119252"`
[INFO] running `"docker" "rm" "-f" "4963cb778f843284292d0cb3031adac7c0378462eab84a17bbe52d8950119252"`
[INFO] [stdout] 4963cb778f843284292d0cb3031adac7c0378462eab84a17bbe52d8950119252