[INFO] updating cached repository Jibbow/rust-2048
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Jibbow/rust-2048
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Jibbow/rust-2048" "work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/Jibbow/rust-2048"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/Jibbow/rust-2048'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Jibbow/rust-2048" "work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/Jibbow/rust-2048"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/Jibbow/rust-2048'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e6c5635a11ca75878009a5346339ceb5e58322c5
[INFO] sha for GitHub repo Jibbow/rust-2048: e6c5635a11ca75878009a5346339ceb5e58322c5
[INFO] validating manifest of Jibbow/rust-2048 on toolchain master#efe2f32a6b8217425f361ec7c206910c611c03ee
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Jibbow/rust-2048 on toolchain try#78b0bd8441ef961f6475e3d47fe3bca38cb83432
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Jibbow/rust-2048
[INFO] finished frobbing Jibbow/rust-2048
[INFO] frobbed toml for Jibbow/rust-2048 written to work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/Jibbow/rust-2048/Cargo.toml
[INFO] started frobbing Jibbow/rust-2048
[INFO] finished frobbing Jibbow/rust-2048
[INFO] frobbed toml for Jibbow/rust-2048 written to work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/Jibbow/rust-2048/Cargo.toml
[INFO] crate Jibbow/rust-2048 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Jibbow/rust-2048 against master#efe2f32a6b8217425f361ec7c206910c611c03ee for pr-60039
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039/worker-7/master#efe2f32a6b8217425f361ec7c206910c611c03ee:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/Jibbow/rust-2048:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] dd7cfb9a4d8aca40fda0f608f6804b0dca8adb0d4e2a1227b4003b7de1f7630e
[INFO] running `"docker" "start" "-a" "dd7cfb9a4d8aca40fda0f608f6804b0dca8adb0d4e2a1227b4003b7de1f7630e"`
[INFO] [stderr]    Compiling either v1.3.0
[INFO] [stderr]     Checking arrayvec v0.4.5
[INFO] [stderr]     Checking rayon-core v1.2.1
[INFO] [stderr]    Compiling glutin v0.10.0
[INFO] [stderr]     Checking pistoncore-input v0.20.0
[INFO] [stderr]    Compiling itertools v0.5.10
[INFO] [stderr]     Checking rusttype v0.2.3
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]    Compiling derivative v1.0.0
[INFO] [stderr]     Checking pistoncore-window v0.30.0
[INFO] [stderr]     Checking piston2d-graphics v0.23.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.35.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking piston v0.35.0
[INFO] [stderr]     Checking image v0.17.0
[INFO] [stderr]     Checking gfx_core v0.7.2
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.49.0
[INFO] [stderr]     Checking pistoncore-glutin_window v0.42.0
[INFO] [stderr]     Checking gfx v0.16.1
[INFO] [stderr]     Checking gfx_device_gl v0.14.4
[INFO] [stderr]     Checking piston-gfx_texture v0.29.0
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.46.0
[INFO] [stderr]     Checking piston_window v0.73.0
[INFO] [stderr]     Checking rust-2048 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `Rectangle` is imported redundantly
[INFO] [stderr]   --> src/gameboard_view.rs:68:24
[INFO] [stderr]    |
[INFO] [stderr] 5  | use piston_window::*;
[INFO] [stderr]    |     ---------------- the item `Rectangle` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 68 |         use graphics::{Rectangle};
[INFO] [stderr]    |                        ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/main.rs:46:21
[INFO] [stderr]    |
[INFO] [stderr] 46 |         if let Some(args) = e.render_args() {
[INFO] [stderr]    |                     ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]   --> src/gameboard_view.rs:83:21
[INFO] [stderr]    |
[INFO] [stderr] 83 |                 let size = settings.size / gameboardsize as f64 - 8.0;
[INFO] [stderr]    |                     ^^^^ help: consider prefixing with an underscore: `_size`
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]   --> src/gameboard.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |         pos.0 >= 0 && (pos.0 as usize) < SIZE
[INFO] [stderr]    |         ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_comparisons)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]   --> src/gameboard.rs:68:16
[INFO] [stderr]    |
[INFO] [stderr] 68 |             && pos.1 >= 0 && (pos.1 as usize) < SIZE
[INFO] [stderr]    |                ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Rectangle` is imported redundantly
[INFO] [stderr]   --> src/gameboard_view.rs:68:24
[INFO] [stderr]    |
[INFO] [stderr] 5  | use piston_window::*;
[INFO] [stderr]    |     ---------------- the item `Rectangle` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 68 |         use graphics::{Rectangle};
[INFO] [stderr]    |                        ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/main.rs:46:21
[INFO] [stderr]    |
[INFO] [stderr] 46 |         if let Some(args) = e.render_args() {
[INFO] [stderr]    |                     ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]   --> src/gameboard_view.rs:83:21
[INFO] [stderr]    |
[INFO] [stderr] 83 |                 let size = settings.size / gameboardsize as f64 - 8.0;
[INFO] [stderr]    |                     ^^^^ help: consider prefixing with an underscore: `_size`
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]   --> src/gameboard.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |         pos.0 >= 0 && (pos.0 as usize) < SIZE
[INFO] [stderr]    |         ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_comparisons)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]   --> src/gameboard.rs:68:16
[INFO] [stderr]    |
[INFO] [stderr] 68 |             && pos.1 >= 0 && (pos.1 as usize) < SIZE
[INFO] [stderr]    |                ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 57.17s
[INFO] running `"docker" "inspect" "dd7cfb9a4d8aca40fda0f608f6804b0dca8adb0d4e2a1227b4003b7de1f7630e"`
[INFO] running `"docker" "rm" "-f" "dd7cfb9a4d8aca40fda0f608f6804b0dca8adb0d4e2a1227b4003b7de1f7630e"`
[INFO] [stdout] dd7cfb9a4d8aca40fda0f608f6804b0dca8adb0d4e2a1227b4003b7de1f7630e