Dec 17 22:59:32.384 INFO checking ilikeavocadoes/form_reader against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 22:59:32.384 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 22:59:32.618 INFO [stdout] 138790d097f8042ceb97cc09d34a794ec276c80ab11aa7b1a32ac0b9a900de13
Dec 17 22:59:32.620 INFO running `"docker" "start" "-a" "138790d097f8042ceb97cc09d34a794ec276c80ab11aa7b1a32ac0b9a900de13"`
Dec 17 22:59:33.784 INFO [stderr]    Compiling syn v0.14.0
Dec 17 22:59:33.790 INFO [stderr]     Checking alga v0.5.4
Dec 17 22:59:33.790 INFO [stderr]     Checking env_logger v0.5.10
Dec 17 22:59:33.802 INFO [stderr]     Checking rusttype v0.5.2
Dec 17 22:59:35.240 INFO [stderr]     Checking quickcheck v0.6.2
Dec 17 22:59:41.043 INFO [stderr]     Checking nalgebra v0.13.1
Dec 17 22:59:47.729 INFO [stderr]    Compiling num-derive v0.2.2
Dec 17 22:59:50.152 INFO [stderr]     Checking image v0.19.0
Dec 17 23:00:19.250 INFO [stderr]     Checking imageproc v0.15.0
Dec 17 23:00:22.455 INFO [stderr]     Checking form_reader v0.1.0 (/opt/crater/workdir)
Dec 17 23:00:23.737 INFO [stderr] warning: unused variable: `x_out`
Dec 17 23:00:23.737 INFO [stderr]   --> src/main.rs:86:10
Dec 17 23:00:23.737 INFO [stderr]    |
Dec 17 23:00:23.737 INFO [stderr] 86 |     let (x_out, y_out) = (x - 1, y);
Dec 17 23:00:23.737 INFO [stderr]    |          ^^^^^ help: consider using `_x_out` instead
Dec 17 23:00:23.738 INFO [stderr]    |
Dec 17 23:00:23.738 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 23:00:23.738 INFO [stderr] 
Dec 17 23:00:23.738 INFO [stderr] warning: unused variable: `y_out`
Dec 17 23:00:23.738 INFO [stderr]   --> src/main.rs:86:17
Dec 17 23:00:23.738 INFO [stderr]    |
Dec 17 23:00:23.738 INFO [stderr] 86 |     let (x_out, y_out) = (x - 1, y);
Dec 17 23:00:23.738 INFO [stderr]    |                 ^^^^^ help: consider using `_y_out` instead
Dec 17 23:00:23.738 INFO [stderr] 
Dec 17 23:00:23.738 INFO [stderr] warning: unused variable: `x_first`
Dec 17 23:00:23.738 INFO [stderr]    --> src/main.rs:100:9
Dec 17 23:00:23.738 INFO [stderr]     |
Dec 17 23:00:23.738 INFO [stderr] 100 |     let x_first = x;
Dec 17 23:00:23.738 INFO [stderr]     |         ^^^^^^^ help: consider using `_x_first` instead
Dec 17 23:00:23.738 INFO [stderr] 
Dec 17 23:00:23.738 INFO [stderr] warning: unused variable: `y_first`
Dec 17 23:00:23.738 INFO [stderr]    --> src/main.rs:101:9
Dec 17 23:00:23.738 INFO [stderr]     |
Dec 17 23:00:23.738 INFO [stderr] 101 |     let y_first = y;
Dec 17 23:00:23.738 INFO [stderr]     |         ^^^^^^^ help: consider using `_y_first` instead
Dec 17 23:00:23.738 INFO [stderr] 
Dec 17 23:00:23.788 INFO [stderr] warning: variable does not need to be mutable
Dec 17 23:00:23.788 INFO [stderr]   --> src/main.rs:98:81
Dec 17 23:00:23.788 INFO [stderr]    |
Dec 17 23:00:23.788 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 23:00:23.788 INFO [stderr]    |                                                                                 ----^^^^^^^
Dec 17 23:00:23.788 INFO [stderr]    |                                                                                 |
Dec 17 23:00:23.788 INFO [stderr]    |                                                                                 help: remove this `mut`
Dec 17 23:00:23.788 INFO [stderr]    |
Dec 17 23:00:23.788 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 23:00:23.788 INFO [stderr] 
Dec 17 23:00:24.256 INFO [stderr] warning: unused variable: `x_out`
Dec 17 23:00:24.256 INFO [stderr]   --> src/main.rs:86:10
Dec 17 23:00:24.257 INFO [stderr]    |
Dec 17 23:00:24.257 INFO [stderr] 86 |     let (x_out, y_out) = (x - 1, y);
Dec 17 23:00:24.257 INFO [stderr]    |          ^^^^^ help: consider using `_x_out` instead
Dec 17 23:00:24.257 INFO [stderr]    |
Dec 17 23:00:24.258 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 23:00:24.258 INFO [stderr] 
Dec 17 23:00:24.258 INFO [stderr] warning: unused variable: `y_out`
Dec 17 23:00:24.258 INFO [stderr]   --> src/main.rs:86:17
Dec 17 23:00:24.259 INFO [stderr]    |
Dec 17 23:00:24.259 INFO [stderr] 86 |     let (x_out, y_out) = (x - 1, y);
Dec 17 23:00:24.259 INFO [stderr]    |                 ^^^^^ help: consider using `_y_out` instead
Dec 17 23:00:24.259 INFO [stderr] 
Dec 17 23:00:24.260 INFO [stderr] warning: unused variable: `x_first`
Dec 17 23:00:24.260 INFO [stderr]    --> src/main.rs:100:9
Dec 17 23:00:24.260 INFO [stderr]     |
Dec 17 23:00:24.261 INFO [stderr] 100 |     let x_first = x;
Dec 17 23:00:24.261 INFO [stderr]     |         ^^^^^^^ help: consider using `_x_first` instead
Dec 17 23:00:24.261 INFO [stderr] 
Dec 17 23:00:24.261 INFO [stderr] warning: unused variable: `y_first`
Dec 17 23:00:24.261 INFO [stderr]    --> src/main.rs:101:9
Dec 17 23:00:24.262 INFO [stderr]     |
Dec 17 23:00:24.262 INFO [stderr] 101 |     let y_first = y;
Dec 17 23:00:24.262 INFO [stderr]     |         ^^^^^^^ help: consider using `_y_first` instead
Dec 17 23:00:24.262 INFO [stderr] 
Dec 17 23:00:24.299 INFO [stderr] warning: variable does not need to be mutable
Dec 17 23:00:24.300 INFO [stderr]   --> src/main.rs:98:81
Dec 17 23:00:24.300 INFO [stderr]    |
Dec 17 23:00:24.300 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 23:00:24.300 INFO [stderr]    |                                                                                 ----^^^^^^^
Dec 17 23:00:24.301 INFO [stderr]    |                                                                                 |
Dec 17 23:00:24.301 INFO [stderr]    |                                                                                 help: remove this `mut`
Dec 17 23:00:24.301 INFO [stderr]    |
Dec 17 23:00:24.302 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 23:00:24.302 INFO [stderr] 
Dec 17 23:00:24.365 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.85s
Dec 17 23:00:25.225 INFO running `"docker" "inspect" "138790d097f8042ceb97cc09d34a794ec276c80ab11aa7b1a32ac0b9a900de13"`
Dec 17 23:00:25.499 INFO running `"docker" "rm" "-f" "138790d097f8042ceb97cc09d34a794ec276c80ab11aa7b1a32ac0b9a900de13"`
Dec 17 23:00:25.760 INFO [stdout] 138790d097f8042ceb97cc09d34a794ec276c80ab11aa7b1a32ac0b9a900de13