[INFO] updating cached repository mehrati/sudoku_solution
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mehrati/sudoku_solution
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mehrati/sudoku_solution" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/mehrati/sudoku_solution"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/mehrati/sudoku_solution'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mehrati/sudoku_solution" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/mehrati/sudoku_solution"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/mehrati/sudoku_solution'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bb2eb0dcd28e23f5db86f27940fba6aaf653308a
[INFO] sha for GitHub repo mehrati/sudoku_solution: bb2eb0dcd28e23f5db86f27940fba6aaf653308a
[INFO] validating manifest of mehrati/sudoku_solution on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mehrati/sudoku_solution on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mehrati/sudoku_solution
[INFO] finished frobbing mehrati/sudoku_solution
[INFO] frobbed toml for mehrati/sudoku_solution written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/mehrati/sudoku_solution/Cargo.toml
[INFO] started frobbing mehrati/sudoku_solution
[INFO] finished frobbing mehrati/sudoku_solution
[INFO] frobbed toml for mehrati/sudoku_solution written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/mehrati/sudoku_solution/Cargo.toml
[INFO] crate mehrati/sudoku_solution has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing mehrati/sudoku_solution against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-2/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/mehrati/sudoku_solution:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] 83fc6f15d3f3fd0dc3e6f9f114b3d2edb684babfd4100bad0c8562ad5109d89b
[INFO] running `"docker" "start" "-a" "83fc6f15d3f3fd0dc3e6f9f114b3d2edb684babfd4100bad0c8562ad5109d89b"`
[INFO] [stderr]    Compiling sudoku_solution v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: type `cell` should have a camel case name
[INFO] [stderr]   --> src/main.rs:10:6
[INFO] [stderr]    |
[INFO] [stderr] 10 | type cell = Cell;
[INFO] [stderr]    |      ^^^^ help: convert the identifier to camel case: `Cell`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_camel_case_types)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/main.rs:111:13
[INFO] [stderr]     |
[INFO] [stderr] 111 |         Err(e) => panic!("err"),
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arr`
[INFO] [stderr]    --> src/main.rs:117:13
[INFO] [stderr]     |
[INFO] [stderr] 117 |     let mut arr:[[i32;9];9]= [[0;9];9];
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_arr`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:117:9
[INFO] [stderr]     |
[INFO] [stderr] 117 |     let mut arr:[[i32;9];9]= [[0;9];9];
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "83fc6f15d3f3fd0dc3e6f9f114b3d2edb684babfd4100bad0c8562ad5109d89b"`
[INFO] running `"docker" "rm" "-f" "83fc6f15d3f3fd0dc3e6f9f114b3d2edb684babfd4100bad0c8562ad5109d89b"`
[INFO] [stdout] 83fc6f15d3f3fd0dc3e6f9f114b3d2edb684babfd4100bad0c8562ad5109d89b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-2/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/mehrati/sudoku_solution:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 0367d58587a760ccc6ac2ae51d39f489b599965faceed0f886e1e857e4c5c8cf
[INFO] running `"docker" "start" "-a" "0367d58587a760ccc6ac2ae51d39f489b599965faceed0f886e1e857e4c5c8cf"`
[INFO] [stderr]    Compiling sudoku_solution v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: type `cell` should have a camel case name
[INFO] [stderr]   --> src/main.rs:10:6
[INFO] [stderr]    |
[INFO] [stderr] 10 | type cell = Cell;
[INFO] [stderr]    |      ^^^^ help: convert the identifier to camel case: `Cell`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_camel_case_types)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/main.rs:111:13
[INFO] [stderr]     |
[INFO] [stderr] 111 |         Err(e) => panic!("err"),
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arr`
[INFO] [stderr]    --> src/main.rs:117:13
[INFO] [stderr]     |
[INFO] [stderr] 117 |     let mut arr:[[i32;9];9]= [[0;9];9];
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_arr`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:117:9
[INFO] [stderr]     |
[INFO] [stderr] 117 |     let mut arr:[[i32;9];9]= [[0;9];9];
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `"docker" "inspect" "0367d58587a760ccc6ac2ae51d39f489b599965faceed0f886e1e857e4c5c8cf"`
[INFO] running `"docker" "rm" "-f" "0367d58587a760ccc6ac2ae51d39f489b599965faceed0f886e1e857e4c5c8cf"`
[INFO] [stdout] 0367d58587a760ccc6ac2ae51d39f489b599965faceed0f886e1e857e4c5c8cf
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-2/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/mehrati/sudoku_solution:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen"`
[INFO] [stdout] a41f9ac795c14b897fa4e913f54f19db32f753181a7b81f73be9d5dd989ee10d
[INFO] running `"docker" "start" "-a" "a41f9ac795c14b897fa4e913f54f19db32f753181a7b81f73be9d5dd989ee10d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/sudoku_solution-19f0748029eeedad
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "a41f9ac795c14b897fa4e913f54f19db32f753181a7b81f73be9d5dd989ee10d"`
[INFO] running `"docker" "rm" "-f" "a41f9ac795c14b897fa4e913f54f19db32f753181a7b81f73be9d5dd989ee10d"`
[INFO] [stdout] a41f9ac795c14b897fa4e913f54f19db32f753181a7b81f73be9d5dd989ee10d