[INFO] cloning repository https://github.com/backskin/backsnake
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/backskin/backsnake" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbackskin%2Fbacksnake", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbackskin%2Fbacksnake'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 48fb7230aa71e9ce220974a9497115920f6712e5
[INFO] checking backskin/backsnake against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbackskin%2Fbacksnake" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/backskin/backsnake
[INFO] finished tweaking git repo https://github.com/backskin/backsnake
[INFO] tweaked toml for git repo https://github.com/backskin/backsnake written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/backskin/backsnake 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/backskin/backsnake 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 piston v0.52.0
[INFO] [stderr]   Downloaded bytemuck v1.3.1
[INFO] [stderr]   Downloaded miniz_oxide v0.4.0
[INFO] [stderr]   Downloaded cc v1.0.59
[INFO] [stderr]   Downloaded backtrace v0.3.50
[INFO] [stderr]   Downloaded pistoncore-glutin_window v0.66.0
[INFO] [stderr]   Downloaded syn v1.0.35
[INFO] [stderr]   Downloaded image v0.23.8
[INFO] [stderr]   Downloaded piston2d-opengl_graphics v0.73.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 079eacbdb15074d579f3cff399de3d4bb6d8feec1c898e8848c6fbc66a0c4f8b
[INFO] running `Command { std: "docker" "start" "-a" "079eacbdb15074d579f3cff399de3d4bb6d8feec1c898e8848c6fbc66a0c4f8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "079eacbdb15074d579f3cff399de3d4bb6d8feec1c898e8848c6fbc66a0c4f8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "079eacbdb15074d579f3cff399de3d4bb6d8feec1c898e8848c6fbc66a0c4f8b", kill_on_drop: false }`
[INFO] [stdout] 079eacbdb15074d579f3cff399de3d4bb6d8feec1c898e8848c6fbc66a0c4f8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 5a37d66b339d5bad4c7c44849f86fc347330dcd44ad265cca6b2fd2551a29700
[INFO] running `Command { std: "docker" "start" "-a" "5a37d66b339d5bad4c7c44849f86fc347330dcd44ad265cca6b2fd2551a29700", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling libloading v0.6.2
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]     Checking piston-float v1.0.0
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling rayon-core v1.7.1
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]     Checking piston-viewport v1.0.0
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking adler32 v1.1.0
[INFO] [stderr]     Checking piston-graphics_api_version v1.0.0
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling cc v1.0.59
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking wayland-sys v0.21.13
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking shader_version v0.7.0
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking vecmath v1.0.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling wayland-scanner v0.21.13
[INFO] [stderr]    Compiling gl_generator v0.13.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling gl_generator v0.10.0
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking tiff v0.5.0
[INFO] [stderr]     Checking piston-texture v0.8.0
[INFO] [stderr]     Checking interpolation v0.2.0
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking png v0.16.7
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[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking bytemuck v1.3.1
[INFO] [stderr]     Checking piston-shaders_graphics2d v0.3.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.6
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.4
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]    Compiling gl v0.11.0
[INFO] [stderr]     Checking rusttype v0.8.3
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]     Checking piston2d-graphics v0.36.0
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]    Compiling wayland-client v0.21.13
[INFO] [stderr]    Compiling wayland-protocols v0.21.13
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking wayland-commons v0.21.13
[INFO] [stderr]     Checking image v0.23.8
[INFO] [stderr]     Checking pistoncore-input v1.0.0
[INFO] [stderr]     Checking pistoncore-window v0.47.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.52.0
[INFO] [stderr]     Checking piston v0.52.0
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.73.0
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.6
[INFO] [stderr]     Checking winit v0.19.5
[INFO] [stderr]     Checking glutin v0.21.2
[INFO] [stderr]     Checking pistoncore-glutin_window v0.66.0
[INFO] [stderr]     Checking snake_game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable `x_end` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:368:13
[INFO] [stdout]     |
[INFO] [stdout] 368 |         let mut x_end = x_start + game.square_size as f64;
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_x_end` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `y_end` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:369:13
[INFO] [stdout]     |
[INFO] [stdout] 369 |         let mut y_end = y_start + game.square_size as f64;
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_y_end` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x_start` is never read
[INFO] [stdout]    --> src/main.rs:377:17
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 x_start += 0.25 * game.square_size as f64;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y_start` is never read
[INFO] [stdout]    --> src/main.rs:373:17
[INFO] [stdout]     |
[INFO] [stdout] 373 |                 y_start += 0.25 * game.square_size as f64;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x_end` is never read
[INFO] [stdout]    --> src/main.rs:378:17
[INFO] [stdout]     |
[INFO] [stdout] 378 |                 x_end -= 0.25 * game.square_size as f64;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y_end` is never read
[INFO] [stdout]    --> src/main.rs:374:17
[INFO] [stdout]     |
[INFO] [stdout] 374 |                 y_end -= 0.25 * game.square_size as f64;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `x_end` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:368:13
[INFO] [stdout]     |
[INFO] [stdout] 368 |         let mut x_end = x_start + game.square_size as f64;
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_x_end` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `y_end` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:369:13
[INFO] [stdout]     |
[INFO] [stdout] 369 |         let mut y_end = y_start + game.square_size as f64;
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_y_end` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x_start` is never read
[INFO] [stdout]    --> src/main.rs:377:17
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 x_start += 0.25 * game.square_size as f64;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y_start` is never read
[INFO] [stdout]    --> src/main.rs:373:17
[INFO] [stdout]     |
[INFO] [stdout] 373 |                 y_start += 0.25 * game.square_size as f64;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x_end` is never read
[INFO] [stdout]    --> src/main.rs:378:17
[INFO] [stdout]     |
[INFO] [stdout] 378 |                 x_end -= 0.25 * game.square_size as f64;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y_end` is never read
[INFO] [stdout]    --> src/main.rs:374:17
[INFO] [stdout]     |
[INFO] [stdout] 374 |                 y_end -= 0.25 * game.square_size as f64;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 59.68s
[INFO] running `Command { std: "docker" "inspect" "5a37d66b339d5bad4c7c44849f86fc347330dcd44ad265cca6b2fd2551a29700", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a37d66b339d5bad4c7c44849f86fc347330dcd44ad265cca6b2fd2551a29700", kill_on_drop: false }`
[INFO] [stdout] 5a37d66b339d5bad4c7c44849f86fc347330dcd44ad265cca6b2fd2551a29700
