Dec 11 13:17:12.361 INFO checking mpizenberg/computer-vision-rs against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 13:17:12.361 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 11 13:17:12.770 INFO [stdout] 0540fa5ae8cfc173e91363833fa30e2488237bf51235ee648079ff3a7f49d4f3
Dec 11 13:17:12.772 INFO running `"docker" "start" "-a" "0540fa5ae8cfc173e91363833fa30e2488237bf51235ee648079ff3a7f49d4f3"`
Dec 11 13:17:13.632 INFO [stderr] usermod: no changes
Dec 11 13:17:14.016 INFO [stderr]     Checking memmap v0.6.2
Dec 11 13:17:14.016 INFO [stderr]     Checking shared_library v0.1.8
Dec 11 13:17:14.016 INFO [stderr]     Checking memchr v2.0.1
Dec 11 13:17:14.018 INFO [stderr]     Checking atty v0.2.10
Dec 11 13:17:14.045 INFO [stderr]     Checking petgraph v0.4.12
Dec 11 13:17:14.045 INFO [stderr]     Checking deflate v0.7.18
Dec 11 13:17:14.047 INFO [stderr]     Checking rand v0.5.1
Dec 11 13:17:14.048 INFO [stderr]     Checking tempfile v3.0.2
Dec 11 13:17:15.332 INFO [stderr]     Checking backtrace-sys v0.1.23
Dec 11 13:17:15.545 INFO [stderr]    Compiling syn v0.14.2
Dec 11 13:17:16.276 INFO [stderr]    Compiling syn v0.13.11
Dec 11 13:17:16.292 INFO [stderr]     Checking num-integer v0.1.36
Dec 11 13:17:16.716 INFO [stderr]     Checking approx v0.2.0
Dec 11 13:17:17.084 INFO [stderr]     Checking num-complex v0.1.43
Dec 11 13:17:17.985 INFO [stderr]     Checking num-complex v0.2.0
Dec 11 13:17:19.293 INFO [stderr]     Checking serde_json v1.0.13
Dec 11 13:17:19.417 INFO [stderr]     Checking x11-dl v2.17.5
Dec 11 13:17:23.258 INFO [stderr]     Checking generic-array v0.11.0
Dec 11 13:17:24.439 INFO [stderr]     Checking aho-corasick v0.6.6
Dec 11 13:17:24.962 INFO [stderr]     Checking nom v4.0.0
Dec 11 13:17:26.856 INFO [stderr]    Compiling glium v0.21.0
Dec 11 13:17:28.313 INFO [stderr]    Compiling serde_derive_internals v0.22.1
Dec 11 13:17:30.876 INFO [stderr]     Checking osmesa-sys v0.1.2
Dec 11 13:17:34.520 INFO [stderr]     Checking backtrace v0.3.8
Dec 11 13:17:34.705 INFO [stderr]     Checking num-bigint v0.1.44
Dec 11 13:17:34.764 INFO [stderr]     Checking num-iter v0.1.35
Dec 11 13:17:35.600 INFO [stderr]     Checking alga v0.6.0
Dec 11 13:17:37.084 INFO [stderr]     Checking rayon-core v1.4.0
Dec 11 13:17:39.161 INFO [stderr]     Checking wayland-sys v0.12.5
Dec 11 13:17:42.266 INFO [stderr]     Checking regex v1.0.1
Dec 11 13:17:45.016 INFO [stderr]     Checking daggy v0.5.0
Dec 11 13:17:45.071 INFO [stderr]     Checking rusttype v0.5.2
Dec 11 13:17:45.285 INFO [stderr]     Checking png v0.12.0
Dec 11 13:17:50.304 INFO [stderr]     Checking wayland-client v0.12.5
Dec 11 13:17:53.344 INFO [stderr]     Checking rayon v1.0.1
Dec 11 13:18:01.800 INFO [stderr]     Checking num-rational v0.1.42
Dec 11 13:18:01.840 INFO [stderr]    Compiling serde_derive v1.0.35
Dec 11 13:18:03.827 INFO [stderr]     Checking env_logger v0.5.10
Dec 11 13:18:04.456 INFO [stderr]     Checking nalgebra v0.15.3
Dec 11 13:18:04.554 INFO [stderr]     Checking wayland-protocols v0.12.5
Dec 11 13:18:07.415 INFO [stderr]     Checking wayland-kbd v0.13.1
Dec 11 13:18:10.477 INFO [stderr]    Compiling num-derive v0.2.2
Dec 11 13:18:33.056 INFO [stderr]     Checking num v0.1.42
Dec 11 13:18:33.777 INFO [stderr]     Checking quickcheck v0.6.2
Dec 11 13:18:34.352 INFO [stderr]     Checking jpeg-decoder v0.1.14
Dec 11 13:18:42.356 INFO [stderr]     Checking wayland-window v0.13.3
Dec 11 13:18:42.564 INFO [stderr]    Compiling conrod_derive v0.1.2
Dec 11 13:18:42.685 INFO [stderr]     Checking image v0.19.0
Dec 11 13:18:46.816 INFO [stderr]     Checking winit v0.12.0
Dec 11 13:18:48.596 INFO [stderr]     Checking pistoncore-input v0.21.0
Dec 11 13:18:54.602 INFO [stderr]     Checking glutin v0.14.0
Dec 11 13:19:22.529 INFO [stderr]     Checking conrod v0.60.0
Dec 11 13:19:36.290 INFO [stderr]     Checking computer-vision-rs v0.1.0 (/source)
Dec 11 13:19:58.293 INFO [stderr] warning: unused variable: `g_x`
Dec 11 13:19:58.293 INFO [stderr]   --> examples/gradient.rs:23:14
Dec 11 13:19:58.293 INFO [stderr]    |
Dec 11 13:19:58.293 INFO [stderr] 23 |         let (g_x, g_y) = gradient_2(&img_matrix);
Dec 11 13:19:58.293 INFO [stderr]    |              ^^^ help: consider using `_g_x` instead
Dec 11 13:19:58.293 INFO [stderr]    |
Dec 11 13:19:58.293 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 13:19:58.293 INFO [stderr] 
Dec 11 13:19:58.293 INFO [stderr] warning: unused variable: `g_y`
Dec 11 13:19:58.293 INFO [stderr]   --> examples/gradient.rs:23:19
Dec 11 13:19:58.293 INFO [stderr]    |
Dec 11 13:19:58.293 INFO [stderr] 23 |         let (g_x, g_y) = gradient_2(&img_matrix);
Dec 11 13:19:58.293 INFO [stderr]    |                   ^^^ help: consider using `_g_y` instead
Dec 11 13:19:58.293 INFO [stderr] 
Dec 11 13:19:58.307 INFO [stderr] warning: function is never used: `gradient_x_inner_for`
Dec 11 13:19:58.308 INFO [stderr]   --> examples/gradient.rs:53:1
Dec 11 13:19:58.308 INFO [stderr]    |
Dec 11 13:19:58.308 INFO [stderr] 53 | fn gradient_x_inner_for(mat: &DMatrix<u8>) -> DMatrix<i16> {
Dec 11 13:19:58.308 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:19:58.308 INFO [stderr]    |
Dec 11 13:19:58.308 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 13:19:58.308 INFO [stderr] 
Dec 11 13:19:58.308 INFO [stderr] warning: function is never used: `gradient_y_inner_for`
Dec 11 13:19:58.308 INFO [stderr]   --> examples/gradient.rs:66:1
Dec 11 13:19:58.308 INFO [stderr]    |
Dec 11 13:19:58.312 INFO [stderr] 66 | fn gradient_y_inner_for(mat: &DMatrix<u8>) -> DMatrix<i16> {
Dec 11 13:19:58.312 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:19:58.312 INFO [stderr] 
Dec 11 13:19:58.312 INFO [stderr] warning: function is never used: `gradient_x_inner_from_fn`
Dec 11 13:19:58.312 INFO [stderr]   --> examples/gradient.rs:81:1
Dec 11 13:19:58.312 INFO [stderr]    |
Dec 11 13:19:58.312 INFO [stderr] 81 | fn gradient_x_inner_from_fn(mat: &DMatrix<u8>) -> DMatrix<i16> {
Dec 11 13:19:58.312 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:19:58.312 INFO [stderr] 
Dec 11 13:19:58.312 INFO [stderr] warning: function is never used: `gradient_y_inner_from_fn`
Dec 11 13:19:58.312 INFO [stderr]   --> examples/gradient.rs:88:1
Dec 11 13:19:58.312 INFO [stderr]    |
Dec 11 13:19:58.312 INFO [stderr] 88 | fn gradient_y_inner_from_fn(mat: &DMatrix<u8>) -> DMatrix<i16> {
Dec 11 13:19:58.312 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:19:58.312 INFO [stderr] 
Dec 11 13:20:00.908 INFO [stderr] warning: function is never used: `half_gradients`
Dec 11 13:20:00.908 INFO [stderr]   --> examples/gradient_pyramid.rs:90:1
Dec 11 13:20:00.908 INFO [stderr]    |
Dec 11 13:20:00.908 INFO [stderr] 90 | fn half_gradients(mat: &DMatrix<u8>) -> DMatrix<(i16, i16, u16)> {
Dec 11 13:20:00.908 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:20:00.908 INFO [stderr]    |
Dec 11 13:20:00.908 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 13:20:00.908 INFO [stderr] 
Dec 11 13:20:01.901 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 48s
Dec 11 13:20:01.937 INFO [stderr] su: No module specific data is present
Dec 11 13:20:02.934 INFO running `"docker" "inspect" "0540fa5ae8cfc173e91363833fa30e2488237bf51235ee648079ff3a7f49d4f3"`
Dec 11 13:20:03.162 INFO running `"docker" "rm" "-f" "0540fa5ae8cfc173e91363833fa30e2488237bf51235ee648079ff3a7f49d4f3"`
Dec 11 13:20:03.604 INFO [stdout] 0540fa5ae8cfc173e91363833fa30e2488237bf51235ee648079ff3a7f49d4f3