Dec 13 16:52:18.382 INFO testing ilikeavocadoes/form_reader against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 13 16:52:18.382 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-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 13 16:52:18.642 INFO [stdout] ef4da7a1ac3a4c118b8713aa706f56a54bfbc2409f5193716ccd2e17e7c71edc
Dec 13 16:52:18.644 INFO running `"docker" "start" "-a" "ef4da7a1ac3a4c118b8713aa706f56a54bfbc2409f5193716ccd2e17e7c71edc"`
Dec 13 16:52:20.094 INFO [stderr] usermod: no changes
Dec 13 16:52:20.390 INFO [stderr]    Compiling crossbeam-epoch v0.3.1
Dec 13 16:52:20.415 INFO [stderr]    Compiling env_logger v0.5.10
Dec 13 16:52:20.431 INFO [stderr]    Compiling nalgebra v0.13.1
Dec 13 16:52:20.431 INFO [stderr]    Compiling rusttype v0.5.2
Dec 13 16:52:23.695 INFO [stderr]    Compiling crossbeam-deque v0.2.0
Dec 13 16:52:27.037 INFO [stderr]    Compiling quickcheck v0.6.2
Dec 13 16:52:27.266 INFO [stderr]    Compiling rayon-core v1.4.0
Dec 13 16:52:32.469 INFO [stderr]    Compiling rayon v1.0.1
Dec 13 16:52:42.052 INFO [stderr]    Compiling jpeg-decoder v0.1.14
Dec 13 16:52:48.164 INFO [stderr]    Compiling image v0.19.0
Dec 13 16:53:23.743 INFO [stderr]    Compiling imageproc v0.15.0
Dec 13 16:53:31.394 INFO [stderr]    Compiling form_reader v0.1.0 (/source)
Dec 13 16:53:34.235 INFO [stderr] warning: unused variable: `x_out`
Dec 13 16:53:34.235 INFO [stderr]   --> src/main.rs:86:10
Dec 13 16:53:34.235 INFO [stderr]    |
Dec 13 16:53:34.235 INFO [stderr] 86 |     let (x_out, y_out) = (x - 1, y);
Dec 13 16:53:34.235 INFO [stderr]    |          ^^^^^ help: consider using `_x_out` instead
Dec 13 16:53:34.235 INFO [stderr]    |
Dec 13 16:53:34.235 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 16:53:34.235 INFO [stderr] 
Dec 13 16:53:34.235 INFO [stderr] warning: unused variable: `y_out`
Dec 13 16:53:34.235 INFO [stderr]   --> src/main.rs:86:17
Dec 13 16:53:34.235 INFO [stderr]    |
Dec 13 16:53:34.235 INFO [stderr] 86 |     let (x_out, y_out) = (x - 1, y);
Dec 13 16:53:34.235 INFO [stderr]    |                 ^^^^^ help: consider using `_y_out` instead
Dec 13 16:53:34.235 INFO [stderr] 
Dec 13 16:53:34.235 INFO [stderr] warning: unused variable: `x_first`
Dec 13 16:53:34.235 INFO [stderr]    --> src/main.rs:100:9
Dec 13 16:53:34.235 INFO [stderr]     |
Dec 13 16:53:34.235 INFO [stderr] 100 |     let x_first = x;
Dec 13 16:53:34.235 INFO [stderr]     |         ^^^^^^^ help: consider using `_x_first` instead
Dec 13 16:53:34.235 INFO [stderr] 
Dec 13 16:53:34.235 INFO [stderr] warning: unused variable: `y_first`
Dec 13 16:53:34.235 INFO [stderr]    --> src/main.rs:101:9
Dec 13 16:53:34.235 INFO [stderr]     |
Dec 13 16:53:34.235 INFO [stderr] 101 |     let y_first = y;
Dec 13 16:53:34.235 INFO [stderr]     |         ^^^^^^^ help: consider using `_y_first` instead
Dec 13 16:53:34.235 INFO [stderr] 
Dec 13 16:53:34.275 INFO [stderr] warning: variable does not need to be mutable
Dec 13 16:53:34.275 INFO [stderr]   --> src/main.rs:98:81
Dec 13 16:53:34.275 INFO [stderr]    |
Dec 13 16:53:34.275 INFO [stderr] 98 | fn follow_contour(img: &image::GrayImage, x: i64, y: i64, direction: Direction, mut contour: Vec<(i64, i64)>) -> Vec<(i64, i64)> {
Dec 13 16:53:34.275 INFO [stderr]    |                                                                                 ----^^^^^^^
Dec 13 16:53:34.275 INFO [stderr]    |                                                                                 |
Dec 13 16:53:34.275 INFO [stderr]    |                                                                                 help: remove this `mut`
Dec 13 16:53:34.275 INFO [stderr]    |
Dec 13 16:53:34.275 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 13 16:53:34.275 INFO [stderr] 
Dec 13 16:53:38.459 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 18s
Dec 13 16:53:38.515 INFO [stderr] su: No module specific data is present
Dec 13 16:53:39.343 INFO running `"docker" "inspect" "ef4da7a1ac3a4c118b8713aa706f56a54bfbc2409f5193716ccd2e17e7c71edc"`
Dec 13 16:53:39.625 INFO running `"docker" "rm" "-f" "ef4da7a1ac3a4c118b8713aa706f56a54bfbc2409f5193716ccd2e17e7c71edc"`
Dec 13 16:53:39.875 INFO [stdout] ef4da7a1ac3a4c118b8713aa706f56a54bfbc2409f5193716ccd2e17e7c71edc
Dec 13 16:53:39.883 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-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 13 16:53:40.368 INFO [stdout] 0f8455862a4f69d228e6d9b69189d6023e32e14ea284faf26fd7515554e76c4e
Dec 13 16:53:40.371 INFO running `"docker" "start" "-a" "0f8455862a4f69d228e6d9b69189d6023e32e14ea284faf26fd7515554e76c4e"`
Dec 13 16:53:41.967 INFO [stderr] usermod: no changes
Dec 13 16:53:42.260 INFO [stderr]    Compiling form_reader v0.1.0 (/source)
Dec 13 16:53:44.954 INFO [stderr] warning: unused variable: `x_out`
Dec 13 16:53:44.954 INFO [stderr]   --> src/main.rs:86:10
Dec 13 16:53:44.954 INFO [stderr]    |
Dec 13 16:53:44.954 INFO [stderr] 86 |     let (x_out, y_out) = (x - 1, y);
Dec 13 16:53:44.954 INFO [stderr]    |          ^^^^^ help: consider using `_x_out` instead
Dec 13 16:53:44.954 INFO [stderr]    |
Dec 13 16:53:44.954 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 16:53:44.954 INFO [stderr] 
Dec 13 16:53:44.954 INFO [stderr] warning: unused variable: `y_out`
Dec 13 16:53:44.954 INFO [stderr]   --> src/main.rs:86:17
Dec 13 16:53:44.954 INFO [stderr]    |
Dec 13 16:53:44.954 INFO [stderr] 86 |     let (x_out, y_out) = (x - 1, y);
Dec 13 16:53:44.954 INFO [stderr]    |                 ^^^^^ help: consider using `_y_out` instead
Dec 13 16:53:44.954 INFO [stderr] 
Dec 13 16:53:44.955 INFO [stderr] warning: unused variable: `x_first`
Dec 13 16:53:44.955 INFO [stderr]    --> src/main.rs:100:9
Dec 13 16:53:44.955 INFO [stderr]     |
Dec 13 16:53:44.955 INFO [stderr] 100 |     let x_first = x;
Dec 13 16:53:44.955 INFO [stderr]     |         ^^^^^^^ help: consider using `_x_first` instead
Dec 13 16:53:44.955 INFO [stderr] 
Dec 13 16:53:44.955 INFO [stderr] warning: unused variable: `y_first`
Dec 13 16:53:44.955 INFO [stderr]    --> src/main.rs:101:9
Dec 13 16:53:44.955 INFO [stderr]     |
Dec 13 16:53:44.955 INFO [stderr] 101 |     let y_first = y;
Dec 13 16:53:44.955 INFO [stderr]     |         ^^^^^^^ help: consider using `_y_first` instead
Dec 13 16:53:44.955 INFO [stderr] 
Dec 13 16:53:44.991 INFO [stderr] warning: variable does not need to be mutable
Dec 13 16:53:44.991 INFO [stderr]   --> src/main.rs:98:81
Dec 13 16:53:44.991 INFO [stderr]    |
Dec 13 16:53:44.991 INFO [stderr] 98 | fn follow_contour(img: &image::GrayImage, x: i64, y: i64, direction: Direction, mut contour: Vec<(i64, i64)>) -> Vec<(i64, i64)> {
Dec 13 16:53:44.991 INFO [stderr]    |                                                                                 ----^^^^^^^
Dec 13 16:53:44.991 INFO [stderr]    |                                                                                 |
Dec 13 16:53:44.991 INFO [stderr]    |                                                                                 help: remove this `mut`
Dec 13 16:53:44.991 INFO [stderr]    |
Dec 13 16:53:44.991 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 13 16:53:44.991 INFO [stderr] 
Dec 13 16:53:45.491 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.49s
Dec 13 16:53:45.503 INFO [stderr] su: No module specific data is present
Dec 13 16:53:46.504 INFO running `"docker" "inspect" "0f8455862a4f69d228e6d9b69189d6023e32e14ea284faf26fd7515554e76c4e"`
Dec 13 16:53:46.882 INFO running `"docker" "rm" "-f" "0f8455862a4f69d228e6d9b69189d6023e32e14ea284faf26fd7515554e76c4e"`
Dec 13 16:53:47.247 INFO [stdout] 0f8455862a4f69d228e6d9b69189d6023e32e14ea284faf26fd7515554e76c4e
Dec 13 16:53:47.249 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen" "-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 13 16:53:47.700 INFO [stdout] 5d6e81bffcf7ca95670bfb3bc3662dab8db19b006a84c3bcb52568506caef537
Dec 13 16:53:47.705 INFO running `"docker" "start" "-a" "5d6e81bffcf7ca95670bfb3bc3662dab8db19b006a84c3bcb52568506caef537"`
Dec 13 16:53:49.703 INFO [stderr] usermod: no changes
Dec 13 16:53:49.892 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.16s
Dec 13 16:53:49.907 INFO [stderr]      Running /target/debug/deps/form_reader-f7ed51daf562a621
Dec 13 16:53:49.909 INFO [stdout] 
Dec 13 16:53:49.909 INFO [stdout] running 0 tests
Dec 13 16:53:49.909 INFO [stdout] 
Dec 13 16:53:49.909 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 16:53:49.909 INFO [stdout] 
Dec 13 16:53:49.913 INFO [stderr] su: No module specific data is present
Dec 13 16:53:50.871 INFO running `"docker" "inspect" "5d6e81bffcf7ca95670bfb3bc3662dab8db19b006a84c3bcb52568506caef537"`
Dec 13 16:53:51.193 INFO running `"docker" "rm" "-f" "5d6e81bffcf7ca95670bfb3bc3662dab8db19b006a84c3bcb52568506caef537"`
Dec 13 16:53:51.445 INFO [stdout] 5d6e81bffcf7ca95670bfb3bc3662dab8db19b006a84c3bcb52568506caef537