[INFO] crate kansas 0.1.0 is already in cache
[INFO] extracting crate kansas 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/kansas/0.1.0
[INFO] extracting crate kansas 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/kansas/0.1.0
[INFO] validating manifest of kansas-0.1.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kansas-0.1.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kansas-0.1.0
[INFO] finished frobbing kansas-0.1.0
[INFO] frobbed toml for kansas-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/kansas/0.1.0/Cargo.toml
[INFO] started frobbing kansas-0.1.0
[INFO] finished frobbing kansas-0.1.0
[INFO] frobbed toml for kansas-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/kansas/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing kansas-0.1.0 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/kansas/0.1.0:/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=warn" "-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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 588830a1e567c87c95c498c488b4bafdaf7a91ae4bf3e7e596b4f3458d4635ed
[INFO] running `"docker" "start" "-a" "588830a1e567c87c95c498c488b4bafdaf7a91ae4bf3e7e596b4f3458d4635ed"`
[INFO] [stderr]    Compiling draw_state v0.7.1
[INFO] [stderr]    Compiling wayland-scanner v0.9.10
[INFO] [stderr]    Compiling gl_generator v0.7.0
[INFO] [stderr]    Compiling glutin v0.9.2
[INFO] [stderr]    Compiling wayland-sys v0.9.10
[INFO] [stderr]    Compiling gfx_core v0.7.2
[INFO] [stderr]    Compiling wayland-client v0.9.10
[INFO] [stderr]    Compiling wayland-protocols v0.9.10
[INFO] [stderr]    Compiling gfx_gl v0.4.0
[INFO] [stderr]    Compiling wayland-kbd v0.9.1
[INFO] [stderr]    Compiling wayland-window v0.7.0
[INFO] [stderr]    Compiling winit v0.7.6
[INFO] [stderr]    Compiling gfx_device_gl v0.14.6
[INFO] [stderr]    Compiling gfx v0.16.3
[INFO] [stderr]    Compiling gfx_window_glutin v0.17.0
[INFO] [stderr]    Compiling kansas v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/events.rs:74:13
[INFO] [stderr]    |
[INFO] [stderr] 74 |             _ => unreachable!(),
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.36s
[INFO] running `"docker" "inspect" "588830a1e567c87c95c498c488b4bafdaf7a91ae4bf3e7e596b4f3458d4635ed"`
[INFO] running `"docker" "rm" "-f" "588830a1e567c87c95c498c488b4bafdaf7a91ae4bf3e7e596b4f3458d4635ed"`
[INFO] [stdout] 588830a1e567c87c95c498c488b4bafdaf7a91ae4bf3e7e596b4f3458d4635ed
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/kansas/0.1.0:/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=warn" "-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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 60f1168e41bc08e7f151edb8f64b1d800561b9e9907d3af38a0dd57f85bf644f
[INFO] running `"docker" "start" "-a" "60f1168e41bc08e7f151edb8f64b1d800561b9e9907d3af38a0dd57f85bf644f"`
[INFO] [stderr]    Compiling kansas v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `wcanvas`
[INFO] [stderr]   --> examples/painter.rs:49:19
[INFO] [stderr]    |
[INFO] [stderr] 49 |     let mut ctx = wcanvas::Canvas::new();
[INFO] [stderr]    |                   ^^^^^^^ use of undeclared type or module `wcanvas`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: Could not compile `kansas`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/events.rs:74:13
[INFO] [stderr]    |
[INFO] [stderr] 74 |             _ => unreachable!(),
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "60f1168e41bc08e7f151edb8f64b1d800561b9e9907d3af38a0dd57f85bf644f"`
[INFO] running `"docker" "rm" "-f" "60f1168e41bc08e7f151edb8f64b1d800561b9e9907d3af38a0dd57f85bf644f"`
[INFO] [stdout] 60f1168e41bc08e7f151edb8f64b1d800561b9e9907d3af38a0dd57f85bf644f