[INFO] updating cached repository grantlindberg4/sudoku-solver
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/grantlindberg4/sudoku-solver
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/grantlindberg4/sudoku-solver" "work/ex/beta-1.38-1/sources/1.37.0/gh/grantlindberg4/sudoku-solver"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/grantlindberg4/sudoku-solver'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/grantlindberg4/sudoku-solver" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/grantlindberg4/sudoku-solver"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/grantlindberg4/sudoku-solver'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b3a9134dd29a6a6b89443a19a398ca474f474c74
[INFO] sha for GitHub repo grantlindberg4/sudoku-solver: b3a9134dd29a6a6b89443a19a398ca474f474c74
[INFO] validating manifest of grantlindberg4/sudoku-solver on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of grantlindberg4/sudoku-solver on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing grantlindberg4/sudoku-solver
[INFO] finished frobbing grantlindberg4/sudoku-solver
[INFO] frobbed toml for grantlindberg4/sudoku-solver written to work/ex/beta-1.38-1/sources/1.37.0/gh/grantlindberg4/sudoku-solver/Cargo.toml
[INFO] started frobbing grantlindberg4/sudoku-solver
[INFO] finished frobbing grantlindberg4/sudoku-solver
[INFO] frobbed toml for grantlindberg4/sudoku-solver written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/grantlindberg4/sudoku-solver/Cargo.toml
[INFO] crate grantlindberg4/sudoku-solver already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing grantlindberg4/sudoku-solver against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/grantlindberg4/sudoku-solver:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] b7ea167c4ce0eedacc67f2c08ae280c70f168bf647363ea2680a1126e0c5bf73
[INFO] running `"docker" "start" "-a" "b7ea167c4ce0eedacc67f2c08ae280c70f168bf647363ea2680a1126e0c5bf73"`
[INFO] [stderr]    Compiling sudoku_solver v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `isFixed`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     isFixed: bool,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `isFixed` should have a snake case name
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     isFixed: bool,
[INFO] [stderr]   |     ^^^^^^^ help: convert the identifier to snake case: `is_fixed`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `isFixed` should have a snake case name
[INFO] [stderr]  --> src/main.rs:7:24
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn new(value: u32, isFixed: bool) -> Self {
[INFO] [stderr]   |                        ^^^^^^^ help: convert the identifier to snake case: `is_fixed`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `isFixed` should have a snake case name
[INFO] [stderr]   --> src/main.rs:21:17
[INFO] [stderr]    |
[INFO] [stderr] 21 |             let isFixed = match value {
[INFO] [stderr]    |                 ^^^^^^^ help: convert the identifier to snake case: `is_fixed`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `"docker" "inspect" "b7ea167c4ce0eedacc67f2c08ae280c70f168bf647363ea2680a1126e0c5bf73"`
[INFO] running `"docker" "rm" "-f" "b7ea167c4ce0eedacc67f2c08ae280c70f168bf647363ea2680a1126e0c5bf73"`
[INFO] [stdout] b7ea167c4ce0eedacc67f2c08ae280c70f168bf647363ea2680a1126e0c5bf73
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/grantlindberg4/sudoku-solver:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] f69ddf3ae0269842bba50c45fa1f6be9686ff09bafb30816c52dfa8b7839314b
[INFO] running `"docker" "start" "-a" "f69ddf3ae0269842bba50c45fa1f6be9686ff09bafb30816c52dfa8b7839314b"`
[INFO] [stderr]    Compiling sudoku_solver v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `isFixed`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     isFixed: bool,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `isFixed` should have a snake case name
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     isFixed: bool,
[INFO] [stderr]   |     ^^^^^^^ help: convert the identifier to snake case: `is_fixed`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `isFixed` should have a snake case name
[INFO] [stderr]  --> src/main.rs:7:24
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn new(value: u32, isFixed: bool) -> Self {
[INFO] [stderr]   |                        ^^^^^^^ help: convert the identifier to snake case: `is_fixed`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `isFixed` should have a snake case name
[INFO] [stderr]   --> src/main.rs:21:17
[INFO] [stderr]    |
[INFO] [stderr] 21 |             let isFixed = match value {
[INFO] [stderr]    |                 ^^^^^^^ help: convert the identifier to snake case: `is_fixed`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `"docker" "inspect" "f69ddf3ae0269842bba50c45fa1f6be9686ff09bafb30816c52dfa8b7839314b"`
[INFO] running `"docker" "rm" "-f" "f69ddf3ae0269842bba50c45fa1f6be9686ff09bafb30816c52dfa8b7839314b"`
[INFO] [stdout] f69ddf3ae0269842bba50c45fa1f6be9686ff09bafb30816c52dfa8b7839314b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/grantlindberg4/sudoku-solver:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 10ecaedad918fedab308b6f35a078ece62be02bc88f7b6be6559abaaf56c9b43
[INFO] running `"docker" "start" "-a" "10ecaedad918fedab308b6f35a078ece62be02bc88f7b6be6559abaaf56c9b43"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/sudoku_solver-fd522b13bf397309
[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" "10ecaedad918fedab308b6f35a078ece62be02bc88f7b6be6559abaaf56c9b43"`
[INFO] running `"docker" "rm" "-f" "10ecaedad918fedab308b6f35a078ece62be02bc88f7b6be6559abaaf56c9b43"`
[INFO] [stdout] 10ecaedad918fedab308b6f35a078ece62be02bc88f7b6be6559abaaf56c9b43