[INFO] cloning repository https://github.com/const-i/snake_01
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/const-i/snake_01" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconst-i%2Fsnake_01", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconst-i%2Fsnake_01'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cf8b8906d71eb97b741c509b9a846d61d67f0087
[INFO] checking const-i/snake_01 against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconst-i%2Fsnake_01" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/const-i/snake_01
[INFO] finished tweaking git repo https://github.com/const-i/snake_01
[INFO] tweaked toml for git repo https://github.com/const-i/snake_01 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/const-i/snake_01 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/const-i/snake_01 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 }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded png v0.16.3
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[INFO] [stderr]   Downloaded backtrace-sys v0.1.36
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 696d566bcee8d75cea14c563f13c9003c27b638c24adad3c8767c5e8077efba3
[INFO] running `Command { std: "docker" "start" "-a" "696d566bcee8d75cea14c563f13c9003c27b638c24adad3c8767c5e8077efba3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "696d566bcee8d75cea14c563f13c9003c27b638c24adad3c8767c5e8077efba3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "696d566bcee8d75cea14c563f13c9003c27b638c24adad3c8767c5e8077efba3", kill_on_drop: false }`
[INFO] [stdout] 696d566bcee8d75cea14c563f13c9003c27b638c24adad3c8767c5e8077efba3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] b1f9a5747dd73d3bba99fcbff5a0d70ffb8eeca3bae0510a94b6f6a1976755ec
[INFO] running `Command { std: "docker" "start" "-a" "b1f9a5747dd73d3bba99fcbff5a0d70ffb8eeca3bae0510a94b6f6a1976755ec", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling memoffset v0.5.4
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[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]     Checking downcast-rs v1.1.1
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]     Checking piston-graphics_api_version v0.2.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling wayland-scanner v0.21.13
[INFO] [stderr]    Compiling gl_generator v0.13.1
[INFO] [stderr]    Compiling gl_generator v0.10.0
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking smallvec v0.6.13
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[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
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[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking piston-shaders_graphics2d v0.3.1
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling gl v0.11.0
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.6
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.4
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[INFO] [stderr]     Checking piston2d-graphics v0.36.0
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[INFO] [stderr]    Compiling serde_derive v1.0.106
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[INFO] [stderr]     Checking snake_01 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::gen_alg::NN`
[INFO] [stdout]  --> src/game.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::gen_alg::NN;
[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: `crate::qlearn::QLearner`
[INFO] [stdout]  --> src/game.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::qlearn::QLearner;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/qlearn.rs:36:63
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let states: Vec<Vec<usize>> = (0..len_states).map(|_| (0..2)).multi_cartesian_product().collect();
[INFO] [stdout]    |                                                               ^    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 36 -         let states: Vec<Vec<usize>> = (0..len_states).map(|_| (0..2)).multi_cartesian_product().collect();
[INFO] [stdout] 36 +         let states: Vec<Vec<usize>> = (0..len_states).map(|_| 0..2 ).multi_cartesian_product().collect();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/qlearn.rs:36:63
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let states: Vec<Vec<usize>> = (0..len_states).map(|_| (0..2)).multi_cartesian_product().collect();
[INFO] [stdout]    |                                                               ^    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 36 -         let states: Vec<Vec<usize>> = (0..len_states).map(|_| (0..2)).multi_cartesian_product().collect();
[INFO] [stdout] 36 +         let states: Vec<Vec<usize>> = (0..len_states).map(|_| 0..2 ).multi_cartesian_product().collect();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/qlearn.rs:112:53
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let perms: Vec<Vec<usize>> = (0..3).map(|_| (0..2)).multi_cartesian_product().collect();
[INFO] [stdout]     |                                                     ^    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 112 -         let perms: Vec<Vec<usize>> = (0..3).map(|_| (0..2)).multi_cartesian_product().collect();
[INFO] [stdout] 112 +         let perms: Vec<Vec<usize>> = (0..3).map(|_| 0..2 ).multi_cartesian_product().collect();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Human` and `GeneticAlgorithm` are never constructed
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | enum GameType {
[INFO] [stdout]    |      -------- variants in this enum
[INFO] [stdout] 18 |     Human,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 19 |     GeneticAlgorithm,
[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 `num_states` and `len_states` are never read
[INFO] [stdout]   --> src/qlearn.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct QLearner {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub num_states: usize,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 30 |     pub len_states: usize,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Human` and `GeneticAlgorithm` are never constructed
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | enum GameType {
[INFO] [stdout]    |      -------- variants in this enum
[INFO] [stdout] 18 |     Human,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 19 |     GeneticAlgorithm,
[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 `num_states` and `len_states` are never read
[INFO] [stdout]   --> src/qlearn.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct QLearner {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub num_states: usize,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 30 |     pub len_states: usize,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 46.98s
[INFO] running `Command { std: "docker" "inspect" "b1f9a5747dd73d3bba99fcbff5a0d70ffb8eeca3bae0510a94b6f6a1976755ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1f9a5747dd73d3bba99fcbff5a0d70ffb8eeca3bae0510a94b6f6a1976755ec", kill_on_drop: false }`
[INFO] [stdout] b1f9a5747dd73d3bba99fcbff5a0d70ffb8eeca3bae0510a94b6f6a1976755ec