Dec 18 14:01:00.718 INFO checking mief-0.1.1 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 14:01:00.718 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/mief/0.1.1:/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 18 14:01:01.089 INFO [stdout] 196f5bf9f655c0e4f51a1dfab6f61d74c96986f6e3bfbfeba139f34ed8293fb5
Dec 18 14:01:01.090 INFO running `"docker" "start" "-a" "196f5bf9f655c0e4f51a1dfab6f61d74c96986f6e3bfbfeba139f34ed8293fb5"`
Dec 18 14:01:02.384 INFO [stderr]     Checking piston2d-graphics v0.23.0
Dec 18 14:01:02.384 INFO [stderr]    Compiling gl v0.6.5
Dec 18 14:01:02.392 INFO [stderr]     Checking pistoncore-input v0.20.0
Dec 18 14:01:02.392 INFO [stderr]     Checking gfx_core v0.7.2
Dec 18 14:01:02.392 INFO [stderr]     Checking image v0.17.0
Dec 18 14:01:02.420 INFO [stderr]     Checking wayland-window v0.8.0
Dec 18 14:01:04.649 INFO [stderr]     Checking winit v0.8.3
Dec 18 14:01:09.047 INFO [stderr]     Checking glutin v0.10.1
Dec 18 14:01:09.411 INFO [stderr]     Checking pistoncore-window v0.30.0
Dec 18 14:01:10.738 INFO [stderr]     Checking pistoncore-event_loop v0.35.0
Dec 18 14:01:11.655 INFO [stderr]     Checking piston v0.35.0
Dec 18 14:01:15.810 INFO [stderr]     Checking pistoncore-glutin_window v0.42.1
Dec 18 14:01:27.738 INFO [stderr]     Checking gfx v0.16.3
Dec 18 14:01:27.738 INFO [stderr]     Checking gfx_device_gl v0.14.6
Dec 18 14:01:32.946 INFO [stderr]     Checking piston-gfx_texture v0.29.0
Dec 18 14:01:34.508 INFO [stderr]     Checking piston2d-gfx_graphics v0.46.0
Dec 18 14:01:36.927 INFO [stderr]     Checking piston_window v0.73.0
Dec 18 14:01:39.019 INFO [stderr]     Checking mief v0.1.1 (/opt/crater/workdir)
Dec 18 14:01:41.669 INFO [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
Dec 18 14:01:41.669 INFO [stderr]   --> src/execution_flow/error.rs:72:23
Dec 18 14:01:41.669 INFO [stderr]    |
Dec 18 14:01:41.669 INFO [stderr] 72 |         assert!(error.cause().is_some(), "Piston errors do not have a cause.");
Dec 18 14:01:41.669 INFO [stderr]    |                       ^^^^^
Dec 18 14:01:41.669 INFO [stderr]    |
Dec 18 14:01:41.669 INFO [stderr]    = note: #[warn(deprecated)] on by default
Dec 18 14:01:41.669 INFO [stderr] 
Dec 18 14:01:41.669 INFO [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
Dec 18 14:01:41.669 INFO [stderr]   --> src/execution_flow/error.rs:79:23
Dec 18 14:01:41.669 INFO [stderr]    |
Dec 18 14:01:41.669 INFO [stderr] 79 |         assert!(error.cause().is_none(), "Piston errors do not have a cause.");
Dec 18 14:01:41.669 INFO [stderr]    |                       ^^^^^
Dec 18 14:01:41.669 INFO [stderr] 
Dec 18 14:01:41.940 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.04s
Dec 18 14:01:42.278 INFO running `"docker" "inspect" "196f5bf9f655c0e4f51a1dfab6f61d74c96986f6e3bfbfeba139f34ed8293fb5"`
Dec 18 14:01:42.458 INFO running `"docker" "rm" "-f" "196f5bf9f655c0e4f51a1dfab6f61d74c96986f6e3bfbfeba139f34ed8293fb5"`
Dec 18 14:01:42.604 INFO [stdout] 196f5bf9f655c0e4f51a1dfab6f61d74c96986f6e3bfbfeba139f34ed8293fb5