Dec 19 12:22:21.685 INFO checking mpizenberg/computer-vision-rs against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 12:22:21.685 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/mpizenberg/computer-vision-rs:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 12:22:22.036 INFO [stdout] 538d7aee2430a88ad71eb36be584850b570ea12955a48b97c03d2a001c4ed022
Dec 19 12:22:22.038 INFO running `"docker" "start" "-a" "538d7aee2430a88ad71eb36be584850b570ea12955a48b97c03d2a001c4ed022"`
Dec 19 12:22:23.092 INFO [stderr]     Checking serde v1.0.35
Dec 19 12:22:23.101 INFO [stderr]    Compiling proc-macro2 v0.3.8
Dec 19 12:22:23.101 INFO [stderr]     Checking atty v0.2.10
Dec 19 12:22:23.101 INFO [stderr]     Checking petgraph v0.4.12
Dec 19 12:22:23.102 INFO [stderr]     Checking rand v0.5.1
Dec 19 12:22:23.102 INFO [stderr]     Checking tempfile v3.0.2
Dec 19 12:22:23.102 INFO [stderr]     Checking aho-corasick v0.6.6
Dec 19 12:22:23.103 INFO [stderr]     Checking nom v4.0.0
Dec 19 12:22:24.422 INFO [stderr]     Checking backtrace-sys v0.1.23
Dec 19 12:22:25.294 INFO [stderr]     Checking num-integer v0.1.36
Dec 19 12:22:25.985 INFO [stderr]     Checking approx v0.2.0
Dec 19 12:22:26.060 INFO [stderr]     Checking num-complex v0.2.0
Dec 19 12:22:26.944 INFO [stderr]     Checking num-complex v0.1.43
Dec 19 12:22:30.304 INFO [stderr]     Checking x11-dl v2.17.5
Dec 19 12:22:30.363 INFO [stderr]    Compiling syn v0.14.2
Dec 19 12:22:30.404 INFO [stderr]     Checking generic-array v0.11.0
Dec 19 12:22:30.550 INFO [stderr]     Checking backtrace v0.3.8
Dec 19 12:22:30.550 INFO [stderr]    Compiling glium v0.21.0
Dec 19 12:22:31.913 INFO [stderr]     Checking regex v1.0.1
Dec 19 12:22:32.127 INFO [stderr]     Checking num-bigint v0.1.44
Dec 19 12:22:34.761 INFO [stderr]     Checking num-iter v0.1.35
Dec 19 12:22:35.766 INFO [stderr]     Checking alga v0.6.0
Dec 19 12:22:36.423 INFO [stderr]    Compiling serde_derive_internals v0.22.1
Dec 19 12:22:51.984 INFO [stderr]     Checking wayland-sys v0.12.5
Dec 19 12:22:52.105 INFO [stderr]    Compiling quote v0.5.2
Dec 19 12:22:52.212 INFO [stderr]     Checking rusttype v0.5.2
Dec 19 12:22:52.224 INFO [stderr]     Checking daggy v0.5.0
Dec 19 12:22:52.392 INFO [stderr]     Checking png v0.12.0
Dec 19 12:22:52.850 INFO [stderr]     Checking num-rational v0.1.42
Dec 19 12:22:55.092 INFO [stderr]     Checking env_logger v0.5.10
Dec 19 12:22:56.974 INFO [stderr]    Compiling serde_derive v1.0.35
Dec 19 12:22:58.341 INFO [stderr]     Checking wayland-client v0.12.5
Dec 19 12:23:10.198 INFO [stderr]    Compiling syn v0.13.11
Dec 19 12:23:10.638 INFO [stderr]     Checking jpeg-decoder v0.1.14
Dec 19 12:23:10.726 INFO [stderr]     Checking num v0.1.42
Dec 19 12:23:10.794 INFO [stderr]     Checking quickcheck v0.6.2
Dec 19 12:23:11.929 INFO [stderr]     Checking nalgebra v0.15.3
Dec 19 12:23:12.074 INFO [stderr]     Checking wayland-protocols v0.12.5
Dec 19 12:23:19.100 INFO [stderr]     Checking wayland-kbd v0.13.1
Dec 19 12:23:20.596 INFO [stderr]    Compiling num-derive v0.2.2
Dec 19 12:23:27.888 INFO [stderr]     Checking serde_json v1.0.13
Dec 19 12:23:30.498 INFO [stderr]     Checking image v0.19.0
Dec 19 12:23:37.536 INFO [stderr]     Checking wayland-window v0.13.3
Dec 19 12:23:39.210 INFO [stderr]     Checking winit v0.12.0
Dec 19 12:23:41.779 INFO [stderr]     Checking pistoncore-input v0.21.0
Dec 19 12:23:46.832 INFO [stderr]     Checking glutin v0.14.0
Dec 19 12:24:05.980 INFO [stderr]    Compiling conrod_derive v0.1.2
Dec 19 12:24:23.196 INFO [stderr]     Checking conrod v0.60.0
Dec 19 12:24:34.468 INFO [stderr]     Checking computer-vision-rs v0.1.0 (/opt/crater/workdir)
Dec 19 12:24:38.940 INFO [stderr] warning: unused variable: `g_x`
Dec 19 12:24:38.940 INFO [stderr]   --> examples/gradient.rs:23:14
Dec 19 12:24:38.940 INFO [stderr]    |
Dec 19 12:24:38.940 INFO [stderr] 23 |         let (g_x, g_y) = gradient_2(&img_matrix);
Dec 19 12:24:38.940 INFO [stderr]    |              ^^^ help: consider using `_g_x` instead
Dec 19 12:24:38.957 INFO [stderr]    |
Dec 19 12:24:38.957 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 12:24:38.957 INFO [stderr] 
Dec 19 12:24:38.957 INFO [stderr] warning: unused variable: `g_y`
Dec 19 12:24:38.957 INFO [stderr]   --> examples/gradient.rs:23:19
Dec 19 12:24:38.957 INFO [stderr]    |
Dec 19 12:24:38.957 INFO [stderr] 23 |         let (g_x, g_y) = gradient_2(&img_matrix);
Dec 19 12:24:38.957 INFO [stderr]    |                   ^^^ help: consider using `_g_y` instead
Dec 19 12:24:38.957 INFO [stderr] 
Dec 19 12:24:39.064 INFO [stderr] warning: function is never used: `gradient_x_inner_for`
Dec 19 12:24:39.064 INFO [stderr]   --> examples/gradient.rs:53:1
Dec 19 12:24:39.064 INFO [stderr]    |
Dec 19 12:24:39.064 INFO [stderr] 53 | fn gradient_x_inner_for(mat: &DMatrix<u8>) -> DMatrix<i16> {
Dec 19 12:24:39.064 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:24:39.064 INFO [stderr]    |
Dec 19 12:24:39.064 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 12:24:39.064 INFO [stderr] 
Dec 19 12:24:39.064 INFO [stderr] warning: function is never used: `gradient_y_inner_for`
Dec 19 12:24:39.064 INFO [stderr]   --> examples/gradient.rs:66:1
Dec 19 12:24:39.064 INFO [stderr]    |
Dec 19 12:24:39.064 INFO [stderr] 66 | fn gradient_y_inner_for(mat: &DMatrix<u8>) -> DMatrix<i16> {
Dec 19 12:24:39.064 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:24:39.064 INFO [stderr] 
Dec 19 12:24:39.064 INFO [stderr] warning: function is never used: `gradient_x_inner_from_fn`
Dec 19 12:24:39.065 INFO [stderr]   --> examples/gradient.rs:81:1
Dec 19 12:24:39.065 INFO [stderr]    |
Dec 19 12:24:39.065 INFO [stderr] 81 | fn gradient_x_inner_from_fn(mat: &DMatrix<u8>) -> DMatrix<i16> {
Dec 19 12:24:39.065 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:24:39.065 INFO [stderr] 
Dec 19 12:24:39.065 INFO [stderr] warning: function is never used: `gradient_y_inner_from_fn`
Dec 19 12:24:39.065 INFO [stderr]   --> examples/gradient.rs:88:1
Dec 19 12:24:39.065 INFO [stderr]    |
Dec 19 12:24:39.065 INFO [stderr] 88 | fn gradient_y_inner_from_fn(mat: &DMatrix<u8>) -> DMatrix<i16> {
Dec 19 12:24:39.065 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:24:39.065 INFO [stderr] 
Dec 19 12:24:39.067 INFO [stderr] warning: function is never used: `half_gradients`
Dec 19 12:24:39.067 INFO [stderr]   --> examples/gradient_pyramid.rs:90:1
Dec 19 12:24:39.067 INFO [stderr]    |
Dec 19 12:24:39.067 INFO [stderr] 90 | fn half_gradients(mat: &DMatrix<u8>) -> DMatrix<(i16, i16, u16)> {
Dec 19 12:24:39.067 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:24:39.072 INFO [stderr]    |
Dec 19 12:24:39.072 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 12:24:39.072 INFO [stderr] 
Dec 19 12:24:43.320 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 20s
Dec 19 12:24:43.968 INFO running `"docker" "inspect" "538d7aee2430a88ad71eb36be584850b570ea12955a48b97c03d2a001c4ed022"`
Dec 19 12:24:44.250 INFO running `"docker" "rm" "-f" "538d7aee2430a88ad71eb36be584850b570ea12955a48b97c03d2a001c4ed022"`
Dec 19 12:24:44.612 INFO [stdout] 538d7aee2430a88ad71eb36be584850b570ea12955a48b97c03d2a001c4ed022