Nov 30 05:05:10.924 INFO checking conundrumer/crossword against master#a49316ddc99d9d595193557fc899f6c52e4d9af9 for pr-56323
Nov 30 05:05:10.924 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-4/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56323/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/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 +a49316ddc99d9d595193557fc899f6c52e4d9af9-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"`
Nov 30 05:05:11.430 INFO [stdout] ee1c30f14f2a59b708cf7957b40ce927126318fe1ceb5117368c5dce3093ef0f
Nov 30 05:05:11.432 INFO running `"docker" "start" "-a" "ee1c30f14f2a59b708cf7957b40ce927126318fe1ceb5117368c5dce3093ef0f"`
Nov 30 05:05:14.379 INFO [stderr] usermod: no changes
Nov 30 05:05:14.440 INFO [stderr]     Checking crossword v0.1.0 (/source)
Nov 30 05:05:15.118 INFO [stderr] warning: unnecessary parentheses around function argument
Nov 30 05:05:15.118 INFO [stderr]   --> src/grid.rs:25:21
Nov 30 05:05:15.118 INFO [stderr]    |
Nov 30 05:05:15.118 INFO [stderr] 25 |         vec![Empty; ((bb.width() as usize) * (bb.height() as usize))]
Nov 30 05:05:15.118 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Nov 30 05:05:15.118 INFO [stderr]    |
Nov 30 05:05:15.120 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Nov 30 05:05:15.120 INFO [stderr] 
Nov 30 05:05:15.344 INFO [stderr] warning: unnecessary parentheses around function argument
Nov 30 05:05:15.344 INFO [stderr]   --> src/grid.rs:25:21
Nov 30 05:05:15.344 INFO [stderr]    |
Nov 30 05:05:15.344 INFO [stderr] 25 |         vec![Empty; ((bb.width() as usize) * (bb.height() as usize))]
Nov 30 05:05:15.344 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Nov 30 05:05:15.344 INFO [stderr]    |
Nov 30 05:05:15.344 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Nov 30 05:05:15.344 INFO [stderr] 
Nov 30 05:05:15.828 INFO [stderr] warning: variable does not need to be mutable
Nov 30 05:05:15.828 INFO [stderr]    --> src/filter.rs:115:17
Nov 30 05:05:15.828 INFO [stderr]     |
Nov 30 05:05:15.828 INFO [stderr] 115 |             let mut seen = &mut self.seen.borrow_mut();
Nov 30 05:05:15.828 INFO [stderr]     |                 ----^^^^
Nov 30 05:05:15.828 INFO [stderr]     |                 |
Nov 30 05:05:15.828 INFO [stderr]     |                 help: remove this `mut`
Nov 30 05:05:15.828 INFO [stderr]     |
Nov 30 05:05:15.828 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 30 05:05:15.829 INFO [stderr] 
Nov 30 05:05:15.902 INFO [stderr] warning: variable does not need to be mutable
Nov 30 05:05:15.903 INFO [stderr]    --> src/filter.rs:115:17
Nov 30 05:05:15.903 INFO [stderr]     |
Nov 30 05:05:15.903 INFO [stderr] 115 |             let mut seen = &mut self.seen.borrow_mut();
Nov 30 05:05:15.903 INFO [stderr]     |                 ----^^^^
Nov 30 05:05:15.903 INFO [stderr]     |                 |
Nov 30 05:05:15.903 INFO [stderr]     |                 help: remove this `mut`
Nov 30 05:05:15.903 INFO [stderr]     |
Nov 30 05:05:15.903 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 30 05:05:15.903 INFO [stderr] 
Nov 30 05:05:15.958 INFO [stderr] warning: type alias is never used: `GridCellPos`
Nov 30 05:05:15.958 INFO [stderr]  --> src/grid_cell.rs:4:1
Nov 30 05:05:15.958 INFO [stderr]   |
Nov 30 05:05:15.958 INFO [stderr] 4 | type GridCellPos = (GridCell, (i8, i8));
Nov 30 05:05:15.958 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:05:15.958 INFO [stderr]   |
Nov 30 05:05:15.958 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 30 05:05:15.958 INFO [stderr] 
Nov 30 05:05:15.958 INFO [stderr] warning: method is never used: `is_valid`
Nov 30 05:05:15.958 INFO [stderr]   --> src/crossword.rs:38:5
Nov 30 05:05:15.958 INFO [stderr]    |
Nov 30 05:05:15.958 INFO [stderr] 38 |     pub fn is_valid(&self) -> bool {
Nov 30 05:05:15.958 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:05:15.958 INFO [stderr] 
Nov 30 05:05:15.959 INFO [stderr] warning: method is never used: `iter`
Nov 30 05:05:15.959 INFO [stderr]   --> src/generate.rs:41:5
Nov 30 05:05:15.959 INFO [stderr]    |
Nov 30 05:05:15.959 INFO [stderr] 41 |     pub fn iter<'b>(&'b self) -> Box<Iterator<Item=Crossword> + 'b> {
Nov 30 05:05:15.959 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:05:15.959 INFO [stderr] 
Nov 30 05:05:15.959 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Nov 30 05:05:15.959 INFO [stderr]  --> src/main.rs:1:12
Nov 30 05:05:15.959 INFO [stderr]   |
Nov 30 05:05:15.959 INFO [stderr] 1 | #![feature(conservative_impl_trait)]
Nov 30 05:05:15.959 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:05:15.959 INFO [stderr]   |
Nov 30 05:05:15.959 INFO [stderr]   = note: #[warn(stable_features)] on by default
Nov 30 05:05:15.959 INFO [stderr] 
Nov 30 05:05:16.032 INFO [stderr] warning: type alias is never used: `GridCellPos`
Nov 30 05:05:16.032 INFO [stderr]  --> src/grid_cell.rs:4:1
Nov 30 05:05:16.032 INFO [stderr]   |
Nov 30 05:05:16.033 INFO [stderr] 4 | type GridCellPos = (GridCell, (i8, i8));
Nov 30 05:05:16.033 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:05:16.033 INFO [stderr]   |
Nov 30 05:05:16.033 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 30 05:05:16.033 INFO [stderr] 
Nov 30 05:05:16.034 INFO [stderr] warning: type alias is never used: `WordPosition`
Nov 30 05:05:16.034 INFO [stderr]    --> src/generate.rs:185:5
Nov 30 05:05:16.034 INFO [stderr]     |
Nov 30 05:05:16.034 INFO [stderr] 185 |     type WordPosition = (&'static str, Position);
Nov 30 05:05:16.035 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:05:16.035 INFO [stderr] 
Nov 30 05:05:16.035 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Nov 30 05:05:16.035 INFO [stderr]  --> src/main.rs:1:12
Nov 30 05:05:16.036 INFO [stderr]   |
Nov 30 05:05:16.036 INFO [stderr] 1 | #![feature(conservative_impl_trait)]
Nov 30 05:05:16.036 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:05:16.036 INFO [stderr]   |
Nov 30 05:05:16.037 INFO [stderr]   = note: #[warn(stable_features)] on by default
Nov 30 05:05:16.037 INFO [stderr] 
Nov 30 05:05:16.104 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.70s
Nov 30 05:05:16.106 INFO [stderr] su: No module specific data is present
Nov 30 05:05:17.024 INFO running `"docker" "inspect" "ee1c30f14f2a59b708cf7957b40ce927126318fe1ceb5117368c5dce3093ef0f"`
Nov 30 05:05:17.362 INFO running `"docker" "rm" "-f" "ee1c30f14f2a59b708cf7957b40ce927126318fe1ceb5117368c5dce3093ef0f"`
Nov 30 05:05:17.676 INFO [stdout] ee1c30f14f2a59b708cf7957b40ce927126318fe1ceb5117368c5dce3093ef0f