Dec 12 01:44:02.561 INFO checking Lireer/ricochet-robot-solver against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 01:44:02.561 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-6/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 12 01:44:02.895 INFO [stdout] 4168ced090874081fa4dfa4d63e35575d9ca0a703dce1f1322c6dec8ab85bb9a
Dec 12 01:44:02.896 INFO running `"docker" "start" "-a" "4168ced090874081fa4dfa4d63e35575d9ca0a703dce1f1322c6dec8ab85bb9a"`
Dec 12 01:44:03.752 INFO [stderr] usermod: no changes
Dec 12 01:44:03.812 INFO [stderr]     Checking num-complex v0.1.36
Dec 12 01:44:03.812 INFO [stderr]     Checking ricochet_board v0.1.0 (/source/ricochet_board)
Dec 12 01:44:03.813 INFO [stderr]     Checking num-bigint v0.1.36
Dec 12 01:44:04.447 INFO [stderr] warning: variable does not need to be mutable
Dec 12 01:44:04.447 INFO [stderr]    --> ricochet_board/src/lib.rs:261:19
Dec 12 01:44:04.447 INFO [stderr]     |
Dec 12 01:44:04.447 INFO [stderr] 261 |     fn fmt(&self, mut fmt: &mut fmt::Formatter) -> fmt::Result {
Dec 12 01:44:04.447 INFO [stderr]     |                   ----^^^
Dec 12 01:44:04.447 INFO [stderr]     |                   |
Dec 12 01:44:04.447 INFO [stderr]     |                   help: remove this `mut`
Dec 12 01:44:04.447 INFO [stderr]     |
Dec 12 01:44:04.447 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 01:44:04.447 INFO [stderr] 
Dec 12 01:44:04.448 INFO [stderr] warning: variable does not need to be mutable
Dec 12 01:44:04.448 INFO [stderr]    --> ricochet_board/src/lib.rs:272:19
Dec 12 01:44:04.449 INFO [stderr]     |
Dec 12 01:44:04.449 INFO [stderr] 272 |     fn fmt(&self, mut fmt: &mut fmt::Formatter) -> fmt::Result {
Dec 12 01:44:04.449 INFO [stderr]     |                   ----^^^
Dec 12 01:44:04.449 INFO [stderr]     |                   |
Dec 12 01:44:04.449 INFO [stderr]     |                   help: remove this `mut`
Dec 12 01:44:04.449 INFO [stderr] 
Dec 12 01:44:05.349 INFO [stderr]     Checking num-rational v0.1.36
Dec 12 01:44:06.252 INFO [stderr]     Checking num v0.1.37
Dec 12 01:44:06.860 INFO [stderr]     Checking ricochet_solver v0.1.0 (/source/ricochet_solver)
Dec 12 01:44:07.888 INFO [stderr] warning: variable does not need to be mutable
Dec 12 01:44:07.888 INFO [stderr]    --> ricochet_solver/src/lib.rs:233:9
Dec 12 01:44:07.888 INFO [stderr]     |
Dec 12 01:44:07.888 INFO [stderr] 233 |         mut visited_pos: &mut Vec<Vec<RobotPositions>>)
Dec 12 01:44:07.888 INFO [stderr]     |         ----^^^^^^^^^^^
Dec 12 01:44:07.888 INFO [stderr]     |         |
Dec 12 01:44:07.888 INFO [stderr]     |         help: remove this `mut`
Dec 12 01:44:07.888 INFO [stderr]     |
Dec 12 01:44:07.888 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 01:44:07.888 INFO [stderr] 
Dec 12 01:44:07.889 INFO [stderr] warning: function is never used: `database_solve`
Dec 12 01:44:07.889 INFO [stderr]    --> ricochet_solver/src/lib.rs:82:1
Dec 12 01:44:07.889 INFO [stderr]     |
Dec 12 01:44:07.889 INFO [stderr] 82  | / fn database_solve(board: &Board,
Dec 12 01:44:07.889 INFO [stderr] 83  | |                   positions: RobotPositions,
Dec 12 01:44:07.889 INFO [stderr] 84  | |                   target: Target,
Dec 12 01:44:07.889 INFO [stderr] 85  | |                   targetx: usize,
Dec 12 01:44:07.889 INFO [stderr] ...   |
Dec 12 01:44:07.889 INFO [stderr] 121 | |     unreachable!()
Dec 12 01:44:07.889 INFO [stderr] 122 | | }
Dec 12 01:44:07.889 INFO [stderr]     | |_^
Dec 12 01:44:07.889 INFO [stderr]     |
Dec 12 01:44:07.889 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 12 01:44:07.889 INFO [stderr] 
Dec 12 01:44:07.948 INFO [stderr]     Checking ricochet v0.1.0 (/source)
Dec 12 01:44:09.929 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.16s
Dec 12 01:44:09.932 INFO [stderr] su: No module specific data is present
Dec 12 01:44:10.218 INFO running `"docker" "inspect" "4168ced090874081fa4dfa4d63e35575d9ca0a703dce1f1322c6dec8ab85bb9a"`
Dec 12 01:44:10.346 INFO running `"docker" "rm" "-f" "4168ced090874081fa4dfa4d63e35575d9ca0a703dce1f1322c6dec8ab85bb9a"`
Dec 12 01:44:10.488 INFO [stdout] 4168ced090874081fa4dfa4d63e35575d9ca0a703dce1f1322c6dec8ab85bb9a