[INFO] crate sudoku 0.7.0 is already in cache
[INFO] extracting crate sudoku 0.7.0 into work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/sudoku/0.7.0
[INFO] extracting crate sudoku 0.7.0 into work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/sudoku/0.7.0
[INFO] validating manifest of sudoku-0.7.0 on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sudoku-0.7.0 on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing sudoku-0.7.0
[INFO] finished frobbing sudoku-0.7.0
[INFO] frobbed toml for sudoku-0.7.0 written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/sudoku/0.7.0/Cargo.toml
[INFO] started frobbing sudoku-0.7.0
[INFO] finished frobbing sudoku-0.7.0
[INFO] frobbed toml for sudoku-0.7.0 written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/sudoku/0.7.0/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking sudoku-0.7.0 against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-6/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/sudoku/0.7.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f6c854a0cb3d983eb46ec2715edb1215331cba4dc338b085f6a3bada4fbf5c18
[INFO] running `"docker" "start" "-a" "f6c854a0cb3d983eb46ec2715edb1215331cba4dc338b085f6a3bada4fbf5c18"`
[INFO] [stderr]     Checking sudoku v0.7.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/solver.rs:172:17
[INFO] [stderr]     |
[INFO] [stderr] 172 |             let mut mask = mask;
[INFO] [stderr]     |                 ----^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/solver.rs:231:17
[INFO] [stderr]     |
[INFO] [stderr] 231 |             let mut singles = (cells1 ^ cells2) & self.unsolved_cells[band];
[INFO] [stderr]     |                 ----^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/solver.rs:172:17
[INFO] [stderr]     |
[INFO] [stderr] 172 |             let mut mask = mask;
[INFO] [stderr]     |                 ----^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/solver.rs:231:17
[INFO] [stderr]     |
[INFO] [stderr] 231 |             let mut singles = (cells1 ^ cells2) & self.unsolved_cells[band];
[INFO] [stderr]     |                 ----^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] error[E0624]: associated constant `ALL` is private
[INFO] [stderr]    --> benches/lib.rs:120:22
[INFO] [stderr]     |
[INFO] [stderr] 120 |     let strategies = Strategy::ALL;
[INFO] [stderr]     |                      ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0624]: associated constant `ALL` is private
[INFO] [stderr]    --> benches/lib.rs:132:22
[INFO] [stderr]     |
[INFO] [stderr] 132 |     let strategies = Strategy::ALL;
[INFO] [stderr]     |                      ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0624`.
[INFO] [stderr] error: Could not compile `sudoku`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "f6c854a0cb3d983eb46ec2715edb1215331cba4dc338b085f6a3bada4fbf5c18"`
[INFO] running `"docker" "rm" "-f" "f6c854a0cb3d983eb46ec2715edb1215331cba4dc338b085f6a3bada4fbf5c18"`
[INFO] [stdout] f6c854a0cb3d983eb46ec2715edb1215331cba4dc338b085f6a3bada4fbf5c18