Dec 11 17:04:50.397 INFO checking ilikeavocadoes/form_reader against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 17:04:50.397 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-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 11 17:04:50.826 INFO [stdout] b3181e2c535c7785d513e417ebb4c6ec74ac425ea4a0ada363a316d9118138f7
Dec 11 17:04:50.828 INFO running `"docker" "start" "-a" "b3181e2c535c7785d513e417ebb4c6ec74ac425ea4a0ada363a316d9118138f7"`
Dec 11 17:04:52.995 INFO [stderr] usermod: no changes
Dec 11 17:04:53.264 INFO [stderr]     Checking crossbeam-epoch v0.3.1
Dec 11 17:04:53.277 INFO [stderr]     Checking num-bigint v0.1.44
Dec 11 17:04:53.284 INFO [stderr]     Checking alga v0.5.4
Dec 11 17:04:53.292 INFO [stderr]     Checking env_logger v0.5.10
Dec 11 17:04:53.293 INFO [stderr]     Checking rusttype v0.5.2
Dec 11 17:04:55.749 INFO [stderr]     Checking crossbeam-deque v0.2.0
Dec 11 17:04:56.708 INFO [stderr]     Checking quickcheck v0.6.2
Dec 11 17:04:58.028 INFO [stderr]     Checking rayon-core v1.4.0
Dec 11 17:04:59.536 INFO [stderr]     Checking num-rational v0.1.42
Dec 11 17:05:02.606 INFO [stderr]     Checking num v0.1.42
Dec 11 17:05:02.610 INFO [stderr]     Checking rayon v1.0.1
Dec 11 17:05:05.506 INFO [stderr]     Checking nalgebra v0.13.1
Dec 11 17:05:09.926 INFO [stderr]     Checking jpeg-decoder v0.1.14
Dec 11 17:05:12.782 INFO [stderr]     Checking image v0.19.0
Dec 11 17:05:40.922 INFO [stderr]     Checking imageproc v0.15.0
Dec 11 17:05:45.820 INFO [stderr]     Checking form_reader v0.1.0 (/source)
Dec 11 17:05:49.653 INFO [stderr] warning: unused variable: `x_out`
Dec 11 17:05:49.653 INFO [stderr]   --> src/main.rs:86:10
Dec 11 17:05:49.653 INFO [stderr]    |
Dec 11 17:05:49.653 INFO [stderr] 86 |     let (x_out, y_out) = (x - 1, y);
Dec 11 17:05:49.653 INFO [stderr]    |          ^^^^^ help: consider using `_x_out` instead
Dec 11 17:05:49.654 INFO [stderr]    |
Dec 11 17:05:49.654 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 17:05:49.654 INFO [stderr] 
Dec 11 17:05:49.654 INFO [stderr] warning: unused variable: `y_out`
Dec 11 17:05:49.654 INFO [stderr]   --> src/main.rs:86:17
Dec 11 17:05:49.654 INFO [stderr]    |
Dec 11 17:05:49.654 INFO [stderr] 86 |     let (x_out, y_out) = (x - 1, y);
Dec 11 17:05:49.654 INFO [stderr]    |                 ^^^^^ help: consider using `_y_out` instead
Dec 11 17:05:49.654 INFO [stderr] 
Dec 11 17:05:49.654 INFO [stderr] warning: unused variable: `x_first`
Dec 11 17:05:49.654 INFO [stderr]    --> src/main.rs:100:9
Dec 11 17:05:49.654 INFO [stderr]     |
Dec 11 17:05:49.654 INFO [stderr] 100 |     let x_first = x;
Dec 11 17:05:49.654 INFO [stderr]     |         ^^^^^^^ help: consider using `_x_first` instead
Dec 11 17:05:49.654 INFO [stderr] 
Dec 11 17:05:49.654 INFO [stderr] warning: unused variable: `y_first`
Dec 11 17:05:49.654 INFO [stderr]    --> src/main.rs:101:9
Dec 11 17:05:49.654 INFO [stderr]     |
Dec 11 17:05:49.654 INFO [stderr] 101 |     let y_first = y;
Dec 11 17:05:49.654 INFO [stderr]     |         ^^^^^^^ help: consider using `_y_first` instead
Dec 11 17:05:49.654 INFO [stderr] 
Dec 11 17:05:49.696 INFO [stderr] warning: variable does not need to be mutable
Dec 11 17:05:49.698 INFO [stderr]   --> src/main.rs:98:81
Dec 11 17:05:49.698 INFO [stderr]    |
Dec 11 17:05:49.698 INFO [stderr] 98 | fn follow_contour(img: &image::GrayImage, x: i64, y: i64, direction: Direction, mut contour: Vec<(i64, i64)>) -> Vec<(i64, i64)> {
Dec 11 17:05:49.698 INFO [stderr]    |                                                                                 ----^^^^^^^
Dec 11 17:05:49.698 INFO [stderr]    |                                                                                 |
Dec 11 17:05:49.698 INFO [stderr]    |                                                                                 help: remove this `mut`
Dec 11 17:05:49.698 INFO [stderr]    |
Dec 11 17:05:49.698 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 17:05:49.698 INFO [stderr] 
Dec 11 17:05:49.964 INFO [stderr] warning: unused variable: `x_out`
Dec 11 17:05:49.964 INFO [stderr]   --> src/main.rs:86:10
Dec 11 17:05:49.964 INFO [stderr]    |
Dec 11 17:05:49.964 INFO [stderr] 86 |     let (x_out, y_out) = (x - 1, y);
Dec 11 17:05:49.964 INFO [stderr]    |          ^^^^^ help: consider using `_x_out` instead
Dec 11 17:05:49.964 INFO [stderr]    |
Dec 11 17:05:49.964 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 17:05:49.964 INFO [stderr] 
Dec 11 17:05:49.964 INFO [stderr] warning: unused variable: `y_out`
Dec 11 17:05:49.964 INFO [stderr]   --> src/main.rs:86:17
Dec 11 17:05:49.964 INFO [stderr]    |
Dec 11 17:05:49.964 INFO [stderr] 86 |     let (x_out, y_out) = (x - 1, y);
Dec 11 17:05:49.964 INFO [stderr]    |                 ^^^^^ help: consider using `_y_out` instead
Dec 11 17:05:49.964 INFO [stderr] 
Dec 11 17:05:49.964 INFO [stderr] warning: unused variable: `x_first`
Dec 11 17:05:49.965 INFO [stderr]    --> src/main.rs:100:9
Dec 11 17:05:49.965 INFO [stderr]     |
Dec 11 17:05:49.965 INFO [stderr] 100 |     let x_first = x;
Dec 11 17:05:49.965 INFO [stderr]     |         ^^^^^^^ help: consider using `_x_first` instead
Dec 11 17:05:49.965 INFO [stderr] 
Dec 11 17:05:49.965 INFO [stderr] warning: unused variable: `y_first`
Dec 11 17:05:49.965 INFO [stderr]    --> src/main.rs:101:9
Dec 11 17:05:49.965 INFO [stderr]     |
Dec 11 17:05:49.965 INFO [stderr] 101 |     let y_first = y;
Dec 11 17:05:49.965 INFO [stderr]     |         ^^^^^^^ help: consider using `_y_first` instead
Dec 11 17:05:49.965 INFO [stderr] 
Dec 11 17:05:50.004 INFO [stderr] warning: variable does not need to be mutable
Dec 11 17:05:50.004 INFO [stderr]   --> src/main.rs:98:81
Dec 11 17:05:50.004 INFO [stderr]    |
Dec 11 17:05:50.004 INFO [stderr] 98 | fn follow_contour(img: &image::GrayImage, x: i64, y: i64, direction: Direction, mut contour: Vec<(i64, i64)>) -> Vec<(i64, i64)> {
Dec 11 17:05:50.004 INFO [stderr]    |                                                                                 ----^^^^^^^
Dec 11 17:05:50.004 INFO [stderr]    |                                                                                 |
Dec 11 17:05:50.004 INFO [stderr]    |                                                                                 help: remove this `mut`
Dec 11 17:05:50.004 INFO [stderr]    |
Dec 11 17:05:50.004 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 17:05:50.004 INFO [stderr] 
Dec 11 17:05:50.055 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 57.04s
Dec 11 17:05:50.064 INFO [stderr] su: No module specific data is present
Dec 11 17:05:50.758 INFO running `"docker" "inspect" "b3181e2c535c7785d513e417ebb4c6ec74ac425ea4a0ada363a316d9118138f7"`
Dec 11 17:05:50.954 INFO running `"docker" "rm" "-f" "b3181e2c535c7785d513e417ebb4c6ec74ac425ea4a0ada363a316d9118138f7"`
Dec 11 17:05:51.228 INFO [stdout] b3181e2c535c7785d513e417ebb4c6ec74ac425ea4a0ada363a316d9118138f7