[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/beta-1.37-6/sources/1.36.0/gh/mehrati/sudoku_solution"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/mehrati/sudoku_solution'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mehrati/sudoku_solution" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mehrati/sudoku_solution"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/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 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mehrati/sudoku_solution on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "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/beta-1.37-6/sources/1.36.0/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/beta-1.37-6/sources/beta-2019-07-23/gh/mehrati/sudoku_solution/Cargo.toml
[INFO] crate mehrati/sudoku_solution already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing mehrati/sudoku_solution against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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=warn" "-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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 4f924dbeb88fa5213db0d1cbfe484bdd027bdaaadc8cae4cea7aaaa4f21d6c8c
[INFO] running `"docker" "start" "-a" "4f924dbeb88fa5213db0d1cbfe484bdd027bdaaadc8cae4cea7aaaa4f21d6c8c"`
[INFO] [stderr]    Compiling sudoku_solution v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: type `cell` should have an upper 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 upper 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 1.09s
[INFO] running `"docker" "inspect" "4f924dbeb88fa5213db0d1cbfe484bdd027bdaaadc8cae4cea7aaaa4f21d6c8c"`
[INFO] running `"docker" "rm" "-f" "4f924dbeb88fa5213db0d1cbfe484bdd027bdaaadc8cae4cea7aaaa4f21d6c8c"`
[INFO] [stdout] 4f924dbeb88fa5213db0d1cbfe484bdd027bdaaadc8cae4cea7aaaa4f21d6c8c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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=warn" "-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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2ff628fbb9766ddd35f4fd34358b774aa0758e8c1363f28a95a7cb3e64a1619f
[INFO] running `"docker" "start" "-a" "2ff628fbb9766ddd35f4fd34358b774aa0758e8c1363f28a95a7cb3e64a1619f"`
[INFO] [stderr]    Compiling sudoku_solution v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: type `cell` should have an upper 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 upper 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 0.90s
[INFO] running `"docker" "inspect" "2ff628fbb9766ddd35f4fd34358b774aa0758e8c1363f28a95a7cb3e64a1619f"`
[INFO] running `"docker" "rm" "-f" "2ff628fbb9766ddd35f4fd34358b774aa0758e8c1363f28a95a7cb3e64a1619f"`
[INFO] [stdout] 2ff628fbb9766ddd35f4fd34358b774aa0758e8c1363f28a95a7cb3e64a1619f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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=warn" "-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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 0386f759531e968a43e0063f9ee68e18716359f39e0298f239a01b5c7d41d49f
[INFO] running `"docker" "start" "-a" "0386f759531e968a43e0063f9ee68e18716359f39e0298f239a01b5c7d41d49f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/sudoku_solution-94e8ff0a9dce7f76
[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" "0386f759531e968a43e0063f9ee68e18716359f39e0298f239a01b5c7d41d49f"`
[INFO] running `"docker" "rm" "-f" "0386f759531e968a43e0063f9ee68e18716359f39e0298f239a01b5c7d41d49f"`
[INFO] [stdout] 0386f759531e968a43e0063f9ee68e18716359f39e0298f239a01b5c7d41d49f