Dec 19 13:03:09.385 INFO checking masonium/card-engine against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 13:03:09.385 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/masonium/card-engine:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 13:03:09.938 INFO [stdout] 15cc4c0a8775fa91f5ba102b1d609f7df92499501f07deec2a706fe7621c6508
Dec 19 13:03:09.940 INFO running `"docker" "start" "-a" "15cc4c0a8775fa91f5ba102b1d609f7df92499501f07deec2a706fe7621c6508"`
Dec 19 13:03:12.020 INFO [stderr]    Compiling ndarray v0.9.1
Dec 19 13:03:12.020 INFO [stderr]     Checking num-complex v0.1.37
Dec 19 13:03:19.607 INFO [stderr]     Checking ndarray-rand v0.5.0
Dec 19 13:03:19.892 INFO [stderr]     Checking card-engine v0.1.0 (/opt/crater/workdir)
Dec 19 13:03:20.364 INFO [stderr] warning: doc comment not used by rustdoc
Dec 19 13:03:20.364 INFO [stderr]   --> src/germanwhist/phase.rs:43:13
Dec 19 13:03:20.364 INFO [stderr]    |
Dec 19 13:03:20.364 INFO [stderr] 43 |             /// this is the first card played
Dec 19 13:03:20.364 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:03:20.364 INFO [stderr]    |
Dec 19 13:03:20.364 INFO [stderr]    = note: #[warn(unused_doc_comments)] on by default
Dec 19 13:03:20.364 INFO [stderr] 
Dec 19 13:03:20.364 INFO [stderr] warning: doc comment not used by rustdoc
Dec 19 13:03:20.364 INFO [stderr]   --> src/germanwhist/phase.rs:90:17
Dec 19 13:03:20.364 INFO [stderr]    |
Dec 19 13:03:20.364 INFO [stderr] 90 |                 /// Give players their new cards
Dec 19 13:03:20.364 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:03:20.364 INFO [stderr] 
Dec 19 13:03:20.380 INFO [stderr] warning: doc comment not used by rustdoc
Dec 19 13:03:20.380 INFO [stderr]   --> src/learning/training.rs:48:9
Dec 19 13:03:20.380 INFO [stderr]    |
Dec 19 13:03:20.380 INFO [stderr] 48 |         /// epsilon-greedy state-choosing
Dec 19 13:03:20.380 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:03:20.380 INFO [stderr] 
Dec 19 13:03:20.420 INFO [stderr] warning: doc comment not used by rustdoc
Dec 19 13:03:20.420 INFO [stderr]   --> src/germanwhist/phase.rs:43:13
Dec 19 13:03:20.420 INFO [stderr]    |
Dec 19 13:03:20.420 INFO [stderr] 43 |             /// this is the first card played
Dec 19 13:03:20.420 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:03:20.420 INFO [stderr]    |
Dec 19 13:03:20.420 INFO [stderr]    = note: #[warn(unused_doc_comments)] on by default
Dec 19 13:03:20.420 INFO [stderr] 
Dec 19 13:03:20.420 INFO [stderr] warning: doc comment not used by rustdoc
Dec 19 13:03:20.420 INFO [stderr]   --> src/germanwhist/phase.rs:90:17
Dec 19 13:03:20.420 INFO [stderr]    |
Dec 19 13:03:20.420 INFO [stderr] 90 |                 /// Give players their new cards
Dec 19 13:03:20.420 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:03:20.420 INFO [stderr] 
Dec 19 13:03:20.420 INFO [stderr] warning: doc comment not used by rustdoc
Dec 19 13:03:20.420 INFO [stderr]   --> src/learning/training.rs:48:9
Dec 19 13:03:20.420 INFO [stderr]    |
Dec 19 13:03:20.420 INFO [stderr] 48 |         /// epsilon-greedy state-choosing
Dec 19 13:03:20.420 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:03:20.420 INFO [stderr] 
Dec 19 13:03:21.256 INFO [stderr] warning: variable does not need to be mutable
Dec 19 13:03:21.256 INFO [stderr]    --> src/germanwhist/player.rs:189:23
Dec 19 13:03:21.256 INFO [stderr]     |
Dec 19 13:03:21.256 INFO [stderr] 189 |     fn card_to_vector(mut x: &mut ArrayViewMut<f32, Ix1>, card: &Option<BasicCard>, suit_order: &[Suit]) {
Dec 19 13:03:21.256 INFO [stderr]     |                       ----^
Dec 19 13:03:21.256 INFO [stderr]     |                       |
Dec 19 13:03:21.256 INFO [stderr]     |                       help: remove this `mut`
Dec 19 13:03:21.256 INFO [stderr]     |
Dec 19 13:03:21.256 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 13:03:21.256 INFO [stderr] 
Dec 19 13:03:21.272 INFO [stderr] warning: variable does not need to be mutable
Dec 19 13:03:21.272 INFO [stderr]    --> src/germanwhist/player.rs:189:23
Dec 19 13:03:21.272 INFO [stderr]     |
Dec 19 13:03:21.272 INFO [stderr] 189 |     fn card_to_vector(mut x: &mut ArrayViewMut<f32, Ix1>, card: &Option<BasicCard>, suit_order: &[Suit]) {
Dec 19 13:03:21.272 INFO [stderr]     |                       ----^
Dec 19 13:03:21.272 INFO [stderr]     |                       |
Dec 19 13:03:21.272 INFO [stderr]     |                       help: remove this `mut`
Dec 19 13:03:21.272 INFO [stderr]     |
Dec 19 13:03:21.272 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 13:03:21.272 INFO [stderr] 
Dec 19 13:03:21.525 INFO [stderr] warning: method is never used: `dump`
Dec 19 13:03:21.525 INFO [stderr]    --> src/learning/neural_net.rs:283:5
Dec 19 13:03:21.525 INFO [stderr]     |
Dec 19 13:03:21.525 INFO [stderr] 283 |     fn dump(&self) {
Dec 19 13:03:21.525 INFO [stderr]     |     ^^^^^^^^^^^^^^
Dec 19 13:03:21.525 INFO [stderr]     |
Dec 19 13:03:21.525 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 13:03:21.525 INFO [stderr] 
Dec 19 13:03:21.544 INFO [stderr] warning: method is never used: `dump`
Dec 19 13:03:21.544 INFO [stderr]    --> src/learning/neural_net.rs:283:5
Dec 19 13:03:21.544 INFO [stderr]     |
Dec 19 13:03:21.544 INFO [stderr] 283 |     fn dump(&self) {
Dec 19 13:03:21.544 INFO [stderr]     |     ^^^^^^^^^^^^^^
Dec 19 13:03:21.544 INFO [stderr]     |
Dec 19 13:03:21.544 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 13:03:21.544 INFO [stderr] 
Dec 19 13:03:22.072 INFO [stderr] warning: doc comment not used by rustdoc
Dec 19 13:03:22.072 INFO [stderr]    --> src/bin/basic_player.rs:200:5
Dec 19 13:03:22.072 INFO [stderr]     |
Dec 19 13:03:22.072 INFO [stderr] 200 |     /// start the game
Dec 19 13:03:22.072 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^
Dec 19 13:03:22.072 INFO [stderr]     |
Dec 19 13:03:22.072 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Dec 19 13:03:22.072 INFO [stderr] 
Dec 19 13:03:22.161 INFO [stderr] warning: doc comment not used by rustdoc
Dec 19 13:03:22.161 INFO [stderr]    --> src/bin/basic_player.rs:200:5
Dec 19 13:03:22.161 INFO [stderr]     |
Dec 19 13:03:22.161 INFO [stderr] 200 |     /// start the game
Dec 19 13:03:22.161 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^
Dec 19 13:03:22.161 INFO [stderr]     |
Dec 19 13:03:22.161 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Dec 19 13:03:22.161 INFO [stderr] 
Dec 19 13:03:22.235 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 13:03:22.235 INFO [stderr]    --> src/bin/basic_player.rs:251:9
Dec 19 13:03:22.235 INFO [stderr]     |
Dec 19 13:03:22.235 INFO [stderr] 251 |         sl.train_on_episode(false);
Dec 19 13:03:22.235 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:03:22.235 INFO [stderr]     |
Dec 19 13:03:22.235 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 13:03:22.236 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 13:03:22.236 INFO [stderr] 
Dec 19 13:03:22.424 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 13:03:22.424 INFO [stderr]    --> src/bin/basic_player.rs:251:9
Dec 19 13:03:22.424 INFO [stderr]     |
Dec 19 13:03:22.424 INFO [stderr] 251 |         sl.train_on_episode(false);
Dec 19 13:03:22.424 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:03:22.424 INFO [stderr]     |
Dec 19 13:03:22.424 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 13:03:22.424 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 13:03:22.424 INFO [stderr] 
Dec 19 13:03:23.032 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.08s
Dec 19 13:03:23.766 INFO running `"docker" "inspect" "15cc4c0a8775fa91f5ba102b1d609f7df92499501f07deec2a706fe7621c6508"`
Dec 19 13:03:24.040 INFO running `"docker" "rm" "-f" "15cc4c0a8775fa91f5ba102b1d609f7df92499501f07deec2a706fe7621c6508"`
Dec 19 13:03:24.245 INFO [stdout] 15cc4c0a8775fa91f5ba102b1d609f7df92499501f07deec2a706fe7621c6508