[INFO] cloning repository https://github.com/ejaszewski/ruthless
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ejaszewski/ruthless" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fejaszewski%2Fruthless"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fejaszewski%2Fruthless'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f99bd02416cf6a36af88ac805dd7161fda37d3d9
[INFO] checking ejaszewski/ruthless against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fejaszewski%2Fruthless" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ejaszewski/ruthless on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ejaszewski/ruthless
[INFO] finished tweaking git repo https://github.com/ejaszewski/ruthless
[INFO] tweaked toml for git repo https://github.com/ejaszewski/ruthless written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/ejaszewski/ruthless already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4920fc1fc0490a723adecec63583f3b9fa58e1dc73ee7c58629af184b2dff98f
[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" "4920fc1fc0490a723adecec63583f3b9fa58e1dc73ee7c58629af184b2dff98f"`
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking rayon-core v1.5.0
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.97
[INFO] [stderr]     Checking serde v1.0.97
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking ruthless v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `Move`
[INFO] [stderr]  --> src/search/hashtable.rs:1:28
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::board::{ Board, Move };
[INFO] [stderr]   |                            ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Move`
[INFO] [stderr]  --> src/search/hashtable.rs:1:28
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::board::{ Board, Move };
[INFO] [stderr]   |                            ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `nodes`
[INFO] [stderr]    --> src/search/negamax.rs:197:26
[INFO] [stderr]     |
[INFO] [stderr] 197 |             let (result, nodes) = negamax_impl(board, -beta, -alpha, half_depth, evaluator);
[INFO] [stderr]     |                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_nodes`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `nodes`
[INFO] [stderr]    --> src/search/negamax.rs:197:26
[INFO] [stderr]     |
[INFO] [stderr] 197 |             let (result, nodes) = negamax_impl(board, -beta, -alpha, half_depth, evaluator);
[INFO] [stderr]     |                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_nodes`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nm_new`
[INFO] [stderr]   --> src/main.rs:16:59
[INFO] [stderr]    |
[INFO] [stderr] 16 | use ruthless::search::{ endgame, negamax, bns, iterative, nm_new, eval::{ PatternEvaluator, StagedPatternEvaluator } };
[INFO] [stderr]    |                                                           ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nm_new`
[INFO] [stderr]   --> src/main.rs:16:59
[INFO] [stderr]    |
[INFO] [stderr] 16 | use ruthless::search::{ endgame, negamax, bns, iterative, nm_new, eval::{ PatternEvaluator, StagedPatternEvaluator } };
[INFO] [stderr]    |                                                           ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.85s
[INFO] running `"docker" "inspect" "4920fc1fc0490a723adecec63583f3b9fa58e1dc73ee7c58629af184b2dff98f"`
[INFO] running `"docker" "rm" "-f" "4920fc1fc0490a723adecec63583f3b9fa58e1dc73ee7c58629af184b2dff98f"`
[INFO] [stdout] 4920fc1fc0490a723adecec63583f3b9fa58e1dc73ee7c58629af184b2dff98f