Dec 19 15:47:57.864 INFO checking ilikeavocadoes/form_reader against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 15:47:57.864 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 15:47:59.466 INFO [stdout] 4d244512e99f9352c421d25e34e1c693bc9315955bfb1f6e7a71b7bb66f6cdfd
Dec 19 15:47:59.470 INFO running `"docker" "start" "-a" "4d244512e99f9352c421d25e34e1c693bc9315955bfb1f6e7a71b7bb66f6cdfd"`
Dec 19 15:48:00.308 INFO [stderr]    Compiling num-integer v0.1.38
Dec 19 15:48:00.308 INFO [stderr]     Checking inflate v0.4.2
Dec 19 15:48:00.316 INFO [stderr]     Checking gif v0.10.0
Dec 19 15:48:00.328 INFO [stderr]    Compiling syn v0.14.0
Dec 19 15:48:00.328 INFO [stderr]     Checking rayon-core v1.4.0
Dec 19 15:48:00.328 INFO [stderr]     Checking ordered-float v0.5.0
Dec 19 15:48:00.328 INFO [stderr]     Checking alga v0.5.4
Dec 19 15:48:00.328 INFO [stderr]     Checking env_logger v0.5.10
Dec 19 15:48:02.126 INFO [stderr]     Checking rusttype v0.5.2
Dec 19 15:48:02.728 INFO [stderr]     Checking num-bigint v0.1.44
Dec 19 15:48:02.728 INFO [stderr]     Checking num-iter v0.1.37
Dec 19 15:48:03.652 INFO [stderr]     Checking quickcheck v0.6.2
Dec 19 15:48:03.872 INFO [stderr]     Checking rayon v1.0.1
Dec 19 15:48:03.962 INFO [stderr]     Checking png v0.12.0
Dec 19 15:48:10.420 INFO [stderr]     Checking num-rational v0.1.42
Dec 19 15:48:12.494 INFO [stderr]     Checking num v0.1.42
Dec 19 15:48:13.964 INFO [stderr]     Checking nalgebra v0.13.1
Dec 19 15:48:15.041 INFO [stderr]     Checking jpeg-decoder v0.1.14
Dec 19 15:48:22.224 INFO [stderr]    Compiling num-derive v0.2.2
Dec 19 15:48:24.804 INFO [stderr]     Checking image v0.19.0
Dec 19 15:48:53.371 INFO [stderr]     Checking imageproc v0.15.0
Dec 19 15:48:56.524 INFO [stderr]     Checking form_reader v0.1.0 (/opt/crater/workdir)
Dec 19 15:48:57.599 INFO [stderr] warning: unused variable: `x_out`
Dec 19 15:48:57.599 INFO [stderr]   --> src/main.rs:86:10
Dec 19 15:48:57.599 INFO [stderr]    |
Dec 19 15:48:57.599 INFO [stderr] 86 |     let (x_out, y_out) = (x - 1, y);
Dec 19 15:48:57.599 INFO [stderr]    |          ^^^^^ help: consider using `_x_out` instead
Dec 19 15:48:57.599 INFO [stderr]    |
Dec 19 15:48:57.599 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 15:48:57.599 INFO [stderr] 
Dec 19 15:48:57.599 INFO [stderr] warning: unused variable: `y_out`
Dec 19 15:48:57.599 INFO [stderr]   --> src/main.rs:86:17
Dec 19 15:48:57.599 INFO [stderr]    |
Dec 19 15:48:57.599 INFO [stderr] 86 |     let (x_out, y_out) = (x - 1, y);
Dec 19 15:48:57.599 INFO [stderr]    |                 ^^^^^ help: consider using `_y_out` instead
Dec 19 15:48:57.599 INFO [stderr] 
Dec 19 15:48:57.599 INFO [stderr] warning: unused variable: `x_first`
Dec 19 15:48:57.599 INFO [stderr]    --> src/main.rs:100:9
Dec 19 15:48:57.599 INFO [stderr]     |
Dec 19 15:48:57.599 INFO [stderr] 100 |     let x_first = x;
Dec 19 15:48:57.599 INFO [stderr]     |         ^^^^^^^ help: consider using `_x_first` instead
Dec 19 15:48:57.599 INFO [stderr] 
Dec 19 15:48:57.599 INFO [stderr] warning: unused variable: `y_first`
Dec 19 15:48:57.599 INFO [stderr]    --> src/main.rs:101:9
Dec 19 15:48:57.599 INFO [stderr]     |
Dec 19 15:48:57.599 INFO [stderr] 101 |     let y_first = y;
Dec 19 15:48:57.599 INFO [stderr]     |         ^^^^^^^ help: consider using `_y_first` instead
Dec 19 15:48:57.599 INFO [stderr] 
Dec 19 15:48:57.616 INFO [stderr] warning: unused variable: `x_out`
Dec 19 15:48:57.616 INFO [stderr]   --> src/main.rs:86:10
Dec 19 15:48:57.616 INFO [stderr]    |
Dec 19 15:48:57.616 INFO [stderr] 86 |     let (x_out, y_out) = (x - 1, y);
Dec 19 15:48:57.616 INFO [stderr]    |          ^^^^^ help: consider using `_x_out` instead
Dec 19 15:48:57.616 INFO [stderr]    |
Dec 19 15:48:57.617 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 15:48:57.617 INFO [stderr] 
Dec 19 15:48:57.617 INFO [stderr] warning: unused variable: `y_out`
Dec 19 15:48:57.617 INFO [stderr]   --> src/main.rs:86:17
Dec 19 15:48:57.617 INFO [stderr]    |
Dec 19 15:48:57.617 INFO [stderr] 86 |     let (x_out, y_out) = (x - 1, y);
Dec 19 15:48:57.617 INFO [stderr]    |                 ^^^^^ help: consider using `_y_out` instead
Dec 19 15:48:57.617 INFO [stderr] 
Dec 19 15:48:57.617 INFO [stderr] warning: unused variable: `x_first`
Dec 19 15:48:57.617 INFO [stderr]    --> src/main.rs:100:9
Dec 19 15:48:57.617 INFO [stderr]     |
Dec 19 15:48:57.617 INFO [stderr] 100 |     let x_first = x;
Dec 19 15:48:57.617 INFO [stderr]     |         ^^^^^^^ help: consider using `_x_first` instead
Dec 19 15:48:57.617 INFO [stderr] 
Dec 19 15:48:57.617 INFO [stderr] warning: unused variable: `y_first`
Dec 19 15:48:57.617 INFO [stderr]    --> src/main.rs:101:9
Dec 19 15:48:57.617 INFO [stderr]     |
Dec 19 15:48:57.617 INFO [stderr] 101 |     let y_first = y;
Dec 19 15:48:57.617 INFO [stderr]     |         ^^^^^^^ help: consider using `_y_first` instead
Dec 19 15:48:57.617 INFO [stderr] 
Dec 19 15:48:57.639 INFO [stderr] warning: variable does not need to be mutable
Dec 19 15:48:57.639 INFO [stderr]   --> src/main.rs:98:81
Dec 19 15:48:57.639 INFO [stderr]    |
Dec 19 15:48:57.640 INFO [stderr] 98 | fn follow_contour(img: &image::GrayImage, x: i64, y: i64, direction: Direction, mut contour: Vec<(i64, i64)>) -> Vec<(i64, i64)> {
Dec 19 15:48:57.640 INFO [stderr]    |                                                                                 ----^^^^^^^
Dec 19 15:48:57.640 INFO [stderr]    |                                                                                 |
Dec 19 15:48:57.640 INFO [stderr]    |                                                                                 help: remove this `mut`
Dec 19 15:48:57.640 INFO [stderr]    |
Dec 19 15:48:57.640 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 15:48:57.640 INFO [stderr] 
Dec 19 15:48:57.679 INFO [stderr] warning: variable does not need to be mutable
Dec 19 15:48:57.679 INFO [stderr]   --> src/main.rs:98:81
Dec 19 15:48:57.679 INFO [stderr]    |
Dec 19 15:48:57.679 INFO [stderr] 98 | fn follow_contour(img: &image::GrayImage, x: i64, y: i64, direction: Direction, mut contour: Vec<(i64, i64)>) -> Vec<(i64, i64)> {
Dec 19 15:48:57.679 INFO [stderr]    |                                                                                 ----^^^^^^^
Dec 19 15:48:57.679 INFO [stderr]    |                                                                                 |
Dec 19 15:48:57.679 INFO [stderr]    |                                                                                 help: remove this `mut`
Dec 19 15:48:57.679 INFO [stderr]    |
Dec 19 15:48:57.679 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 15:48:57.679 INFO [stderr] 
Dec 19 15:48:57.765 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 57.66s
Dec 19 15:48:58.624 INFO running `"docker" "inspect" "4d244512e99f9352c421d25e34e1c693bc9315955bfb1f6e7a71b7bb66f6cdfd"`
Dec 19 15:48:58.922 INFO running `"docker" "rm" "-f" "4d244512e99f9352c421d25e34e1c693bc9315955bfb1f6e7a71b7bb66f6cdfd"`
Dec 19 15:48:59.200 INFO [stdout] 4d244512e99f9352c421d25e34e1c693bc9315955bfb1f6e7a71b7bb66f6cdfd