Dec 04 16:00:20.975 INFO checking kbsymanz/maze-rust against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 16:00:20.975 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-0/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 04 16:00:21.424 INFO [stdout] a4c574abb09d19d52261caf2cfc0f5ab47e34d47084e423463289d3a2e52bacd
Dec 04 16:00:21.433 INFO running `"docker" "start" "-a" "a4c574abb09d19d52261caf2cfc0f5ab47e34d47084e423463289d3a2e52bacd"`
Dec 04 16:00:23.095 INFO [stderr] usermod: no changes
Dec 04 16:00:23.488 INFO [stderr]    Compiling gdk-pixbuf v0.1.2
Dec 04 16:00:23.495 INFO [stderr]    Compiling gio v0.1.2
Dec 04 16:00:23.496 INFO [stderr]    Compiling cairo-rs v0.1.2
Dec 04 16:00:23.497 INFO [stderr]    Compiling gdk v0.5.2
Dec 04 16:00:23.498 INFO [stderr]    Compiling gtk v0.1.2
Dec 04 16:00:23.499 INFO [stderr]     Checking serde v0.9.13
Dec 04 16:00:23.512 INFO [stderr]     Checking itertools v0.4.19
Dec 04 16:00:23.513 INFO [stderr]    Compiling gio-sys v0.3.3
Dec 04 16:00:25.555 INFO [stderr]    Compiling pango-sys v0.3.3
Dec 04 16:00:25.759 INFO [stderr]    Compiling cairo-sys-rs v0.3.3
Dec 04 16:00:26.555 INFO [stderr]    Compiling gdk-pixbuf-sys v0.3.3
Dec 04 16:00:26.559 INFO [stderr]    Compiling gdk-sys v0.3.3
Dec 04 16:00:27.111 INFO [stderr]    Compiling gtk-sys v0.3.3
Dec 04 16:00:29.314 INFO [stderr]     Checking memchr v0.1.11
Dec 04 16:00:29.497 INFO [stderr]     Checking num-complex v0.1.37
Dec 04 16:00:30.339 INFO [stderr]     Checking deflate v0.7.6
Dec 04 16:00:30.690 INFO [stderr]     Checking uuid v0.4.0
Dec 04 16:00:30.690 INFO [stderr]     Checking num-bigint v0.1.37
Dec 04 16:00:31.198 INFO [stderr]    Compiling syn v0.11.10
Dec 04 16:00:31.850 INFO [stderr]     Checking glib-sys v0.3.3
Dec 04 16:00:33.031 INFO [stderr]     Checking rayon-core v1.0.0
Dec 04 16:00:35.028 INFO [stderr]     Checking aho-corasick v0.5.3
Dec 04 16:00:35.769 INFO [stderr]     Checking thread-id v2.0.0
Dec 04 16:00:36.151 INFO [stderr]     Checking png v0.6.2
Dec 04 16:00:37.303 INFO [stderr]     Checking num-rational v0.1.36
Dec 04 16:00:37.503 INFO [stderr]     Checking rayon v0.7.0
Dec 04 16:00:37.787 INFO [stderr]     Checking thread_local v0.2.7
Dec 04 16:00:39.716 INFO [stderr]     Checking num v0.1.37
Dec 04 16:00:39.767 INFO [stderr]     Checking regex v0.1.80
Dec 04 16:00:40.424 INFO [stderr]     Checking nalgebra v0.5.1
Dec 04 16:00:41.221 INFO [stderr]     Checking gobject-sys v0.3.3
Dec 04 16:00:42.331 INFO [stderr]     Checking glib v0.1.2
Dec 04 16:00:43.844 INFO [stderr]     Checking atk-sys v0.3.3
Dec 04 16:00:52.010 INFO [stderr]     Checking jpeg-decoder v0.1.12
Dec 04 16:00:52.343 INFO [stderr]     Checking pango v0.1.2
Dec 04 16:00:52.876 INFO [stderr]     Checking env_logger v0.3.5
Dec 04 16:00:53.131 INFO [stderr]    Compiling serde_codegen_internals v0.14.2
Dec 04 16:00:56.557 INFO [stderr]     Checking quickcheck v0.2.27
Dec 04 16:00:58.019 INFO [stderr]     Checking serde_json v0.9.10
Dec 04 16:00:59.327 INFO [stderr]     Checking image v0.12.3
Dec 04 16:00:59.501 INFO [stderr]    Compiling serde_derive v0.9.13
Dec 04 16:01:12.955 INFO [stderr]     Checking imageproc v0.7.0
Dec 04 16:01:32.387 INFO [stderr]     Checking maze-rust v0.2.0 (/source)
Dec 04 16:01:41.250 INFO [stderr] warning: unused import: `kbsymanz_maze::grid`
Dec 04 16:01:41.250 INFO [stderr]   --> src/main.rs:10:5
Dec 04 16:01:41.250 INFO [stderr]    |
Dec 04 16:01:41.250 INFO [stderr] 10 | use kbsymanz_maze::grid;
Dec 04 16:01:41.250 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 04 16:01:41.250 INFO [stderr]    |
Dec 04 16:01:41.250 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 04 16:01:41.250 INFO [stderr] 
Dec 04 16:01:41.250 INFO [stderr] warning: unused import: `main_gui`
Dec 04 16:01:41.250 INFO [stderr]   --> src/main.rs:11:36
Dec 04 16:01:41.250 INFO [stderr]    |
Dec 04 16:01:41.250 INFO [stderr] 11 | use kbsymanz_maze::gui::main_gui::{main_gui};
Dec 04 16:01:41.250 INFO [stderr]    |                                    ^^^^^^^^
Dec 04 16:01:41.250 INFO [stderr] 
Dec 04 16:01:41.250 INFO [stderr] warning: unused imports: `App`, `Arg`
Dec 04 16:01:41.250 INFO [stderr]   --> src/main.rs:14:12
Dec 04 16:01:41.250 INFO [stderr]    |
Dec 04 16:01:41.251 INFO [stderr] 14 | use clap::{App, Arg};
Dec 04 16:01:41.251 INFO [stderr]    |            ^^^  ^^^
Dec 04 16:01:41.251 INFO [stderr] 
Dec 04 16:01:41.251 INFO [stderr] warning: unused import: `std::collections::HashSet`
Dec 04 16:01:41.251 INFO [stderr]   --> src/main.rs:15:5
Dec 04 16:01:41.251 INFO [stderr]    |
Dec 04 16:01:41.252 INFO [stderr] 15 | use std::collections::HashSet;
Dec 04 16:01:41.252 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 16:01:41.252 INFO [stderr] 
Dec 04 16:01:41.336 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 18s
Dec 04 16:01:41.356 INFO [stderr] su: No module specific data is present
Dec 04 16:01:42.383 INFO running `"docker" "inspect" "a4c574abb09d19d52261caf2cfc0f5ab47e34d47084e423463289d3a2e52bacd"`
Dec 04 16:01:42.793 INFO running `"docker" "rm" "-f" "a4c574abb09d19d52261caf2cfc0f5ab47e34d47084e423463289d3a2e52bacd"`
Dec 04 16:01:43.091 INFO [stdout] a4c574abb09d19d52261caf2cfc0f5ab47e34d47084e423463289d3a2e52bacd