Dec 04 09:09:24.903 INFO checking swizzard/boggler against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 09:09:24.903 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 09:09:25.405 INFO [stdout] 9502f5c3ef94d371a1f808a22370fdec01dcf6dacbb2985cb2040dd7cbb3e0e5
Dec 04 09:09:25.407 INFO running `"docker" "start" "-a" "9502f5c3ef94d371a1f808a22370fdec01dcf6dacbb2985cb2040dd7cbb3e0e5"`
Dec 04 09:09:27.926 INFO [stderr] usermod: no changes
Dec 04 09:09:28.091 INFO [stderr]     Checking ascii v0.8.7
Dec 04 09:09:28.091 INFO [stderr]     Checking rand v0.5.1
Dec 04 09:09:31.207 INFO [stderr]     Checking boggler v0.1.0 (/source)
Dec 04 09:09:31.665 INFO [stderr] warning: unused variable: `seen`
Dec 04 09:09:31.666 INFO [stderr]    --> src/solver.rs:156:17
Dec 04 09:09:31.666 INFO [stderr]     |
Dec 04 09:09:31.666 INFO [stderr] 156 |         let mut seen: HashSet<BoardPosition> = HashSet::with_capacity(16);
Dec 04 09:09:31.666 INFO [stderr]     |                 ^^^^ help: consider using `_seen` instead
Dec 04 09:09:31.666 INFO [stderr]     |
Dec 04 09:09:31.666 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 04 09:09:31.666 INFO [stderr] 
Dec 04 09:09:31.666 INFO [stderr] warning: unused variable: `adjcts`
Dec 04 09:09:31.666 INFO [stderr]    --> src/solver.rs:158:17
Dec 04 09:09:31.666 INFO [stderr]     |
Dec 04 09:09:31.666 INFO [stderr] 158 |             let adjcts = board.adjacents(x, y);
Dec 04 09:09:31.666 INFO [stderr]     |                 ^^^^^^ help: consider using `_adjcts` instead
Dec 04 09:09:31.666 INFO [stderr] 
Dec 04 09:09:31.711 INFO [stderr] warning: variable does not need to be mutable
Dec 04 09:09:31.711 INFO [stderr]    --> src/solver.rs:154:13
Dec 04 09:09:31.711 INFO [stderr]     |
Dec 04 09:09:31.711 INFO [stderr] 154 |         let mut x = 0;
Dec 04 09:09:31.711 INFO [stderr]     |             ----^
Dec 04 09:09:31.711 INFO [stderr]     |             |
Dec 04 09:09:31.711 INFO [stderr]     |             help: remove this `mut`
Dec 04 09:09:31.711 INFO [stderr]     |
Dec 04 09:09:31.711 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 04 09:09:31.711 INFO [stderr] 
Dec 04 09:09:31.711 INFO [stderr] warning: variable does not need to be mutable
Dec 04 09:09:31.711 INFO [stderr]    --> src/solver.rs:155:13
Dec 04 09:09:31.711 INFO [stderr]     |
Dec 04 09:09:31.711 INFO [stderr] 155 |         let mut y = 0;
Dec 04 09:09:31.711 INFO [stderr]     |             ----^
Dec 04 09:09:31.711 INFO [stderr]     |             |
Dec 04 09:09:31.711 INFO [stderr]     |             help: remove this `mut`
Dec 04 09:09:31.711 INFO [stderr] 
Dec 04 09:09:31.711 INFO [stderr] warning: variable does not need to be mutable
Dec 04 09:09:31.711 INFO [stderr]    --> src/solver.rs:156:13
Dec 04 09:09:31.711 INFO [stderr]     |
Dec 04 09:09:31.711 INFO [stderr] 156 |         let mut seen: HashSet<BoardPosition> = HashSet::with_capacity(16);
Dec 04 09:09:31.711 INFO [stderr]     |             ----^^^^
Dec 04 09:09:31.711 INFO [stderr]     |             |
Dec 04 09:09:31.711 INFO [stderr]     |             help: remove this `mut`
Dec 04 09:09:31.711 INFO [stderr] 
Dec 04 09:09:31.711 INFO [stderr] warning: method is never used: `find_letter`
Dec 04 09:09:31.711 INFO [stderr]    --> src/solver.rs:149:5
Dec 04 09:09:31.711 INFO [stderr]     |
Dec 04 09:09:31.711 INFO [stderr] 149 |     fn find_letter(&self, chr: &AsciiChar) -> Option<&BTNode> {
Dec 04 09:09:31.711 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:09:31.711 INFO [stderr]     |
Dec 04 09:09:31.711 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 04 09:09:31.711 INFO [stderr] 
Dec 04 09:09:31.739 INFO [stderr] warning: unused variable: `seen`
Dec 04 09:09:31.739 INFO [stderr]    --> src/solver.rs:156:17
Dec 04 09:09:31.739 INFO [stderr]     |
Dec 04 09:09:31.739 INFO [stderr] 156 |         let mut seen: HashSet<BoardPosition> = HashSet::with_capacity(16);
Dec 04 09:09:31.739 INFO [stderr]     |                 ^^^^ help: consider using `_seen` instead
Dec 04 09:09:31.739 INFO [stderr]     |
Dec 04 09:09:31.739 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 04 09:09:31.739 INFO [stderr] 
Dec 04 09:09:31.739 INFO [stderr] warning: unused variable: `adjcts`
Dec 04 09:09:31.739 INFO [stderr]    --> src/solver.rs:158:17
Dec 04 09:09:31.739 INFO [stderr]     |
Dec 04 09:09:31.739 INFO [stderr] 158 |             let adjcts = board.adjacents(x, y);
Dec 04 09:09:31.739 INFO [stderr]     |                 ^^^^^^ help: consider using `_adjcts` instead
Dec 04 09:09:31.739 INFO [stderr] 
Dec 04 09:09:31.871 INFO [stderr] warning: variable does not need to be mutable
Dec 04 09:09:31.871 INFO [stderr]    --> src/solver.rs:154:13
Dec 04 09:09:31.871 INFO [stderr]     |
Dec 04 09:09:31.871 INFO [stderr] 154 |         let mut x = 0;
Dec 04 09:09:31.871 INFO [stderr]     |             ----^
Dec 04 09:09:31.871 INFO [stderr]     |             |
Dec 04 09:09:31.871 INFO [stderr]     |             help: remove this `mut`
Dec 04 09:09:31.871 INFO [stderr]     |
Dec 04 09:09:31.871 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 04 09:09:31.871 INFO [stderr] 
Dec 04 09:09:31.871 INFO [stderr] warning: variable does not need to be mutable
Dec 04 09:09:31.871 INFO [stderr]    --> src/solver.rs:155:13
Dec 04 09:09:31.871 INFO [stderr]     |
Dec 04 09:09:31.871 INFO [stderr] 155 |         let mut y = 0;
Dec 04 09:09:31.871 INFO [stderr]     |             ----^
Dec 04 09:09:31.871 INFO [stderr]     |             |
Dec 04 09:09:31.871 INFO [stderr]     |             help: remove this `mut`
Dec 04 09:09:31.871 INFO [stderr] 
Dec 04 09:09:31.871 INFO [stderr] warning: variable does not need to be mutable
Dec 04 09:09:31.871 INFO [stderr]    --> src/solver.rs:156:13
Dec 04 09:09:31.871 INFO [stderr]     |
Dec 04 09:09:31.871 INFO [stderr] 156 |         let mut seen: HashSet<BoardPosition> = HashSet::with_capacity(16);
Dec 04 09:09:31.871 INFO [stderr]     |             ----^^^^
Dec 04 09:09:31.871 INFO [stderr]     |             |
Dec 04 09:09:31.872 INFO [stderr]     |             help: remove this `mut`
Dec 04 09:09:31.872 INFO [stderr] 
Dec 04 09:09:32.609 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.66s
Dec 04 09:09:32.614 INFO [stderr] su: No module specific data is present
Dec 04 09:09:33.418 INFO running `"docker" "inspect" "9502f5c3ef94d371a1f808a22370fdec01dcf6dacbb2985cb2040dd7cbb3e0e5"`
Dec 04 09:09:33.726 INFO running `"docker" "rm" "-f" "9502f5c3ef94d371a1f808a22370fdec01dcf6dacbb2985cb2040dd7cbb3e0e5"`
Dec 04 09:09:33.975 INFO [stdout] 9502f5c3ef94d371a1f808a22370fdec01dcf6dacbb2985cb2040dd7cbb3e0e5