Dec 17 22:59:28.321 INFO checking ilikeavocadoes/form_reader against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 22:59:28.321 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/ilikeavocadoes/form_reader:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 22:59:28.639 INFO [stdout] c64ebd71a69b967bf1556d809d47e8f2899cf0b9852caa4d25e9f1f3452df056
Dec 17 22:59:28.639 INFO running `"docker" "start" "-a" "c64ebd71a69b967bf1556d809d47e8f2899cf0b9852caa4d25e9f1f3452df056"`
Dec 17 22:59:29.458 INFO [stderr]    Compiling syn v0.14.0
Dec 17 22:59:29.458 INFO [stderr]     Checking rayon-core v1.4.0
Dec 17 22:59:29.458 INFO [stderr]     Checking alga v0.5.4
Dec 17 22:59:29.459 INFO [stderr]     Checking env_logger v0.5.10
Dec 17 22:59:29.459 INFO [stderr]     Checking png v0.12.0
Dec 17 22:59:29.460 INFO [stderr]     Checking rusttype v0.5.2
Dec 17 22:59:30.700 INFO [stderr]     Checking quickcheck v0.6.2
Dec 17 22:59:30.953 INFO [stderr]     Checking rayon v1.0.1
Dec 17 22:59:33.231 INFO [stderr]     Checking nalgebra v0.13.1
Dec 17 22:59:35.713 INFO [stderr]     Checking jpeg-decoder v0.1.14
Dec 17 22:59:40.104 INFO [stderr]    Compiling num-derive v0.2.2
Dec 17 22:59:42.481 INFO [stderr]     Checking image v0.19.0
Dec 17 23:00:12.576 INFO [stderr]     Checking imageproc v0.15.0
Dec 17 23:00:15.716 INFO [stderr]     Checking form_reader v0.1.0 (/opt/crater/workdir)
Dec 17 23:00:16.874 INFO [stderr] warning: unused variable: `x_out`
Dec 17 23:00:16.874 INFO [stderr]   --> src/main.rs:86:10
Dec 17 23:00:16.874 INFO [stderr]    |
Dec 17 23:00:16.874 INFO [stderr] 86 |     let (x_out, y_out) = (x - 1, y);
Dec 17 23:00:16.874 INFO [stderr]    |          ^^^^^ help: consider using `_x_out` instead
Dec 17 23:00:16.874 INFO [stderr]    |
Dec 17 23:00:16.874 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 23:00:16.874 INFO [stderr] 
Dec 17 23:00:16.874 INFO [stderr] warning: unused variable: `y_out`
Dec 17 23:00:16.874 INFO [stderr]   --> src/main.rs:86:17
Dec 17 23:00:16.874 INFO [stderr]    |
Dec 17 23:00:16.874 INFO [stderr] 86 |     let (x_out, y_out) = (x - 1, y);
Dec 17 23:00:16.874 INFO [stderr]    |                 ^^^^^ help: consider using `_y_out` instead
Dec 17 23:00:16.874 INFO [stderr] 
Dec 17 23:00:16.874 INFO [stderr] warning: unused variable: `x_first`
Dec 17 23:00:16.874 INFO [stderr]    --> src/main.rs:100:9
Dec 17 23:00:16.874 INFO [stderr]     |
Dec 17 23:00:16.874 INFO [stderr] 100 |     let x_first = x;
Dec 17 23:00:16.875 INFO [stderr]     |         ^^^^^^^ help: consider using `_x_first` instead
Dec 17 23:00:16.875 INFO [stderr] 
Dec 17 23:00:16.875 INFO [stderr] warning: unused variable: `y_first`
Dec 17 23:00:16.875 INFO [stderr]    --> src/main.rs:101:9
Dec 17 23:00:16.875 INFO [stderr]     |
Dec 17 23:00:16.875 INFO [stderr] 101 |     let y_first = y;
Dec 17 23:00:16.875 INFO [stderr]     |         ^^^^^^^ help: consider using `_y_first` instead
Dec 17 23:00:16.875 INFO [stderr] 
Dec 17 23:00:16.920 INFO [stderr] warning: variable does not need to be mutable
Dec 17 23:00:16.920 INFO [stderr]   --> src/main.rs:98:81
Dec 17 23:00:16.920 INFO [stderr]    |
Dec 17 23:00:16.920 INFO [stderr] 98 | fn follow_contour(img: &image::GrayImage, x: i64, y: i64, direction: Direction, mut contour: Vec<(i64, i64)>) -> Vec<(i64, i64)> {
Dec 17 23:00:16.920 INFO [stderr]    |                                                                                 ----^^^^^^^
Dec 17 23:00:16.920 INFO [stderr]    |                                                                                 |
Dec 17 23:00:16.920 INFO [stderr]    |                                                                                 help: remove this `mut`
Dec 17 23:00:16.920 INFO [stderr]    |
Dec 17 23:00:16.920 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 23:00:16.920 INFO [stderr] 
Dec 17 23:00:17.224 INFO [stderr] warning: unused variable: `x_out`
Dec 17 23:00:17.224 INFO [stderr]   --> src/main.rs:86:10
Dec 17 23:00:17.224 INFO [stderr]    |
Dec 17 23:00:17.224 INFO [stderr] 86 |     let (x_out, y_out) = (x - 1, y);
Dec 17 23:00:17.224 INFO [stderr]    |          ^^^^^ help: consider using `_x_out` instead
Dec 17 23:00:17.224 INFO [stderr]    |
Dec 17 23:00:17.224 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 23:00:17.224 INFO [stderr] 
Dec 17 23:00:17.224 INFO [stderr] warning: unused variable: `y_out`
Dec 17 23:00:17.224 INFO [stderr]   --> src/main.rs:86:17
Dec 17 23:00:17.224 INFO [stderr]    |
Dec 17 23:00:17.224 INFO [stderr] 86 |     let (x_out, y_out) = (x - 1, y);
Dec 17 23:00:17.224 INFO [stderr]    |                 ^^^^^ help: consider using `_y_out` instead
Dec 17 23:00:17.224 INFO [stderr] 
Dec 17 23:00:17.224 INFO [stderr] warning: unused variable: `x_first`
Dec 17 23:00:17.224 INFO [stderr]    --> src/main.rs:100:9
Dec 17 23:00:17.224 INFO [stderr]     |
Dec 17 23:00:17.224 INFO [stderr] 100 |     let x_first = x;
Dec 17 23:00:17.224 INFO [stderr]     |         ^^^^^^^ help: consider using `_x_first` instead
Dec 17 23:00:17.224 INFO [stderr] 
Dec 17 23:00:17.224 INFO [stderr] warning: unused variable: `y_first`
Dec 17 23:00:17.224 INFO [stderr]    --> src/main.rs:101:9
Dec 17 23:00:17.224 INFO [stderr]     |
Dec 17 23:00:17.224 INFO [stderr] 101 |     let y_first = y;
Dec 17 23:00:17.224 INFO [stderr]     |         ^^^^^^^ help: consider using `_y_first` instead
Dec 17 23:00:17.224 INFO [stderr] 
Dec 17 23:00:17.272 INFO [stderr] warning: variable does not need to be mutable
Dec 17 23:00:17.272 INFO [stderr]   --> src/main.rs:98:81
Dec 17 23:00:17.272 INFO [stderr]    |
Dec 17 23:00:17.272 INFO [stderr] 98 | fn follow_contour(img: &image::GrayImage, x: i64, y: i64, direction: Direction, mut contour: Vec<(i64, i64)>) -> Vec<(i64, i64)> {
Dec 17 23:00:17.272 INFO [stderr]    |                                                                                 ----^^^^^^^
Dec 17 23:00:17.272 INFO [stderr]    |                                                                                 |
Dec 17 23:00:17.272 INFO [stderr]    |                                                                                 help: remove this `mut`
Dec 17 23:00:17.272 INFO [stderr]    |
Dec 17 23:00:17.272 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 23:00:17.272 INFO [stderr] 
Dec 17 23:00:17.316 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.08s
Dec 17 23:00:18.111 INFO running `"docker" "inspect" "c64ebd71a69b967bf1556d809d47e8f2899cf0b9852caa4d25e9f1f3452df056"`
Dec 17 23:00:18.406 INFO running `"docker" "rm" "-f" "c64ebd71a69b967bf1556d809d47e8f2899cf0b9852caa4d25e9f1f3452df056"`
Dec 17 23:00:18.759 INFO [stdout] c64ebd71a69b967bf1556d809d47e8f2899cf0b9852caa4d25e9f1f3452df056