[INFO] updating cached repository dakitten2358/rust_sudoku
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dakitten2358/rust_sudoku
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dakitten2358/rust_sudoku" "work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/dakitten2358/rust_sudoku"`
[INFO] [stderr] Cloning into 'work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/dakitten2358/rust_sudoku'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dakitten2358/rust_sudoku" "work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/dakitten2358/rust_sudoku"`
[INFO] [stderr] Cloning into 'work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/dakitten2358/rust_sudoku'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a099d400896428bcc995a0f85ef1b77e3d32f4e4
[INFO] sha for GitHub repo dakitten2358/rust_sudoku: a099d400896428bcc995a0f85ef1b77e3d32f4e4
[INFO] validating manifest of dakitten2358/rust_sudoku on toolchain master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dakitten2358/rust_sudoku on toolchain try#29640c57b5f92febba0e40c50cb863c9a7ede51d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dakitten2358/rust_sudoku
[INFO] finished frobbing dakitten2358/rust_sudoku
[INFO] frobbed toml for dakitten2358/rust_sudoku written to work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/dakitten2358/rust_sudoku/Cargo.toml
[INFO] started frobbing dakitten2358/rust_sudoku
[INFO] finished frobbing dakitten2358/rust_sudoku
[INFO] frobbed toml for dakitten2358/rust_sudoku written to work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/dakitten2358/rust_sudoku/Cargo.toml
[INFO] crate dakitten2358/rust_sudoku has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking dakitten2358/rust_sudoku against master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039 for pr-57745
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57745/worker-7/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/dakitten2358/rust_sudoku:/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" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 9ee0c814cfb9a9b7c11e36df16c8d7b339fddcc044cad980bec74dcb3b6c3268
[INFO] running `"docker" "start" "-a" "9ee0c814cfb9a9b7c11e36df16c8d7b339fddcc044cad980bec74dcb3b6c3268"`
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking deflate v0.7.13
[INFO] [stderr]     Checking num-rational v0.1.38
[INFO] [stderr]    Compiling glutin v0.8.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking wayland-sys v0.8.7
[INFO] [stderr]     Checking wayland-client v0.8.7
[INFO] [stderr]     Checking png v0.8.0
[INFO] [stderr]     Checking image v0.14.0
[INFO] [stderr]     Checking wayland-window v0.5.0
[INFO] [stderr]     Checking wayland-kbd v0.8.0
[INFO] [stderr]     Checking winit v0.6.4
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.45.0
[INFO] [stderr]     Checking pistoncore-glutin_window v0.37.0
[INFO] [stderr]     Checking sudoku v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/gameboard.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |         /// check to see if we already have this number in the given row or column
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/gameboard.rs:62:16
[INFO] [stderr]    |
[INFO] [stderr] 62 |             if (self.cells[i][ind[0]] == val) {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/gameboard.rs:65:16
[INFO] [stderr]    |
[INFO] [stderr] 65 |             if (self.cells[ind[1]][i] == val) {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/gameboard.rs:80:12
[INFO] [stderr]    |
[INFO] [stderr] 80 |         if (self.cells[row1 + section_row][col1 + section_col] == val) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/gameboard.rs:83:12
[INFO] [stderr]    |
[INFO] [stderr] 83 |         if (self.cells[row2 + section_row][col1 + section_col] == val) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/gameboard.rs:87:12
[INFO] [stderr]    |
[INFO] [stderr] 87 |         if (self.cells[row1 + section_row][col2 + section_col] == val) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/gameboard.rs:90:12
[INFO] [stderr]    |
[INFO] [stderr] 90 |         if (self.cells[row2 + section_row][col2 + section_col] == val) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/gameboard.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |         /// check to see if we already have this number in the given row or column
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/gameboard.rs:62:16
[INFO] [stderr]    |
[INFO] [stderr] 62 |             if (self.cells[i][ind[0]] == val) {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/gameboard.rs:65:16
[INFO] [stderr]    |
[INFO] [stderr] 65 |             if (self.cells[ind[1]][i] == val) {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/gameboard.rs:80:12
[INFO] [stderr]    |
[INFO] [stderr] 80 |         if (self.cells[row1 + section_row][col1 + section_col] == val) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/gameboard.rs:83:12
[INFO] [stderr]    |
[INFO] [stderr] 83 |         if (self.cells[row2 + section_row][col1 + section_col] == val) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/gameboard.rs:87:12
[INFO] [stderr]    |
[INFO] [stderr] 87 |         if (self.cells[row1 + section_row][col2 + section_col] == val) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/gameboard.rs:90:12
[INFO] [stderr]    |
[INFO] [stderr] 90 |         if (self.cells[row2 + section_row][col2 + section_col] == val) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.38s
[INFO] running `"docker" "inspect" "9ee0c814cfb9a9b7c11e36df16c8d7b339fddcc044cad980bec74dcb3b6c3268"`
[INFO] running `"docker" "rm" "-f" "9ee0c814cfb9a9b7c11e36df16c8d7b339fddcc044cad980bec74dcb3b6c3268"`
[INFO] [stdout] 9ee0c814cfb9a9b7c11e36df16c8d7b339fddcc044cad980bec74dcb3b6c3268