[INFO] cloning repository https://github.com/boulanlo/chess
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/boulanlo/chess" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fboulanlo%2Fchess", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fboulanlo%2Fchess'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 596ec746d2114bde534b847665e8e03fd4389ee2
[INFO] checking boulanlo/chess against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fboulanlo%2Fchess" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/boulanlo/chess
[INFO] finished tweaking git repo https://github.com/boulanlo/chess
[INFO] tweaked toml for git repo https://github.com/boulanlo/chess written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/boulanlo/chess on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/boulanlo/chess already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7d9dc2f5e08f9bf2ea8124e23cd8eefc49ab55e02944851c6c7ea6fa05a53a79
[INFO] running `Command { std: "docker" "start" "-a" "7d9dc2f5e08f9bf2ea8124e23cd8eefc49ab55e02944851c6c7ea6fa05a53a79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d9dc2f5e08f9bf2ea8124e23cd8eefc49ab55e02944851c6c7ea6fa05a53a79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d9dc2f5e08f9bf2ea8124e23cd8eefc49ab55e02944851c6c7ea6fa05a53a79", kill_on_drop: false }`
[INFO] [stdout] 7d9dc2f5e08f9bf2ea8124e23cd8eefc49ab55e02944851c6c7ea6fa05a53a79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] acae51ef99601ca37f23af19a21034979f910f54370597d016fbb91b834cff0c
[INFO] running `Command { std: "docker" "start" "-a" "acae51ef99601ca37f23af19a21034979f910f54370597d016fbb91b834cff0c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling const_fn v0.4.3
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking plotters-backend v0.3.0
[INFO] [stderr]     Checking regex-automata v0.1.9
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[INFO] [stderr]     Checking half v1.7.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking itertools v0.10.0
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[INFO] [stderr]     Checking atty v0.2.14
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[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking bstr v0.2.15
[INFO] [stderr]     Checking serde_cbor v0.11.1
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[INFO] [stderr]     Checking tinytemplate v1.2.0
[INFO] [stderr]     Checking criterion v0.3.4
[INFO] [stderr]     Checking rayon_logs v0.1.3
[INFO] [stderr]     Checking chess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `data`, `functions`, `threads`, and `sizes` are never read
[INFO] [stdout]    --> src/bench.rs:170:5
[INFO] [stdout]     |
[INFO] [stdout] 169 | pub struct BenchmarkResult {
[INFO] [stdout]     |            --------------- fields in this struct
[INFO] [stdout] 170 |     data: Vec<Vec<Vec<Vec<u64>>>>,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 171 |     functions: Vec<String>,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 172 |     threads: Vec<usize>,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 173 |     sizes: Vec<usize>,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `data`, `functions`, `threads`, and `sizes` are never read
[INFO] [stdout]    --> src/bench.rs:170:5
[INFO] [stdout]     |
[INFO] [stdout] 169 | pub struct BenchmarkResult {
[INFO] [stdout]     |            --------------- fields in this struct
[INFO] [stdout] 170 |     data: Vec<Vec<Vec<Vec<u64>>>>,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 171 |     functions: Vec<String>,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 172 |     threads: Vec<usize>,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 173 |     sizes: Vec<usize>,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Benchmark` and `Board`
[INFO] [stdout]  --> benches/rook.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use chess::{Benchmark, Board, BoardGenerator};
[INFO] [stdout]   |             ^^^^^^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Benchmark` and `Board`
[INFO] [stdout]  --> benches/sequential.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use chess::{Benchmark, Board, BoardGenerator};
[INFO] [stdout]   |             ^^^^^^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `criterion::Throughput`
[INFO] [stdout]  --> benches/rook.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use criterion::Throughput;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `black_box`
[INFO] [stdout]  --> benches/rook.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use criterion::{black_box, criterion_group, criterion_main, Criterion};
[INFO] [stdout]   |                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `criterion::Throughput`
[INFO] [stdout]  --> benches/sequential.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use criterion::Throughput;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `black_box`
[INFO] [stdout]  --> benches/sequential.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use criterion::{black_box, criterion_group, criterion_main, Criterion};
[INFO] [stdout]   |                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `results`
[INFO] [stdout]   --> src/main.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let results = Benchmark::new()
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_results`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate` is never used
[INFO] [stdout]  --> src/main.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn generate(generator: &BoardGenerator) -> Board {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `results`
[INFO] [stdout]   --> src/main.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let results = Benchmark::new()
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_results`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate` is never used
[INFO] [stdout]  --> src/main.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn generate(generator: &BoardGenerator) -> Board {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> benches/sequential.rs:21:18
[INFO] [stdout]    |
[INFO] [stdout] 21 |             |b, &size| {
[INFO] [stdout]    |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> benches/sequential.rs:14:83
[INFO] [stdout]    |
[INFO] [stdout] 14 |         group.bench_with_input(BenchmarkId::new("Single rook", size), &size, |b, &size| {
[INFO] [stdout]    |                                                                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> benches/rook.rs:43:18
[INFO] [stdout]    |
[INFO] [stdout] 43 |             |b, &size| {
[INFO] [stdout]    |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> benches/rook.rs:35:18
[INFO] [stdout]    |
[INFO] [stdout] 35 |             |b, &size| {
[INFO] [stdout]    |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> benches/rook.rs:27:18
[INFO] [stdout]    |
[INFO] [stdout] 27 |             |b, &size| {
[INFO] [stdout]    |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> benches/rook.rs:19:18
[INFO] [stdout]    |
[INFO] [stdout] 19 |             |b, &size| {
[INFO] [stdout]    |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> benches/rook.rs:64:80
[INFO] [stdout]    |
[INFO] [stdout] 64 |         group.bench_with_input(BenchmarkId::new("Parallel", size), &size, |b, &size| {
[INFO] [stdout]    |                                                                                ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> benches/rook.rs:60:82
[INFO] [stdout]    |
[INFO] [stdout] 60 |         group.bench_with_input(BenchmarkId::new("Sequential", size), &size, |b, &size| {
[INFO] [stdout]    |                                                                                  ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `par_test` is never used
[INFO] [stdout]  --> benches/rook.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn par_test(c: &mut Criterion) {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.03s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 5`
[INFO] running `Command { std: "docker" "inspect" "acae51ef99601ca37f23af19a21034979f910f54370597d016fbb91b834cff0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acae51ef99601ca37f23af19a21034979f910f54370597d016fbb91b834cff0c", kill_on_drop: false }`
[INFO] [stdout] acae51ef99601ca37f23af19a21034979f910f54370597d016fbb91b834cff0c