[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/beta-1.38-1/sources/1.37.0/gh/dakitten2358/rust_sudoku"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/dakitten2358/rust_sudoku'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dakitten2358/rust_sudoku" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/dakitten2358/rust_sudoku"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 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 dakitten2358/rust_sudoku 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 dakitten2358/rust_sudoku
[INFO] finished frobbing dakitten2358/rust_sudoku
[INFO] frobbed toml for dakitten2358/rust_sudoku written to work/ex/beta-1.38-1/sources/1.37.0/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/beta-1.38-1/sources/beta-2019-08-13/gh/dakitten2358/rust_sudoku/Cargo.toml
[INFO] crate dakitten2358/rust_sudoku 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 dakitten2358/rust_sudoku against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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=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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 07cf3d7aabfb0cb1ccd5306d8151260ee8abed6a7053bdfe4d5a8e0cee08fd55
[INFO] running `"docker" "start" "-a" "07cf3d7aabfb0cb1ccd5306d8151260ee8abed6a7053bdfe4d5a8e0cee08fd55"`
[INFO] [stderr]    Compiling khronos_api v1.0.1
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling shared_library v0.1.6
[INFO] [stderr]    Compiling x11-dl v2.14.0
[INFO] [stderr]    Compiling xml-rs v0.6.0
[INFO] [stderr]    Compiling vecmath v0.3.0
[INFO] [stderr]    Compiling deflate v0.7.13
[INFO] [stderr]    Compiling num-rational v0.1.38
[INFO] [stderr]    Compiling wayland-scanner v0.8.7
[INFO] [stderr]    Compiling pistoncore-input v0.18.0
[INFO] [stderr]    Compiling piston2d-graphics v0.21.1
[INFO] [stderr]    Compiling osmesa-sys v0.1.2
[INFO] [stderr]    Compiling png v0.8.0
[INFO] [stderr]    Compiling fs2 v0.2.5
[INFO] [stderr]    Compiling gl_generator v0.5.5
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]    Compiling tempfile v2.1.5
[INFO] [stderr]    Compiling pistoncore-window v0.27.0
[INFO] [stderr]    Compiling memmap v0.4.0
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]    Compiling wayland-client v0.8.7
[INFO] [stderr]    Compiling pistoncore-event_loop v0.32.0
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]    Compiling target_build_utils v0.3.1
[INFO] [stderr]    Compiling piston v0.32.0
[INFO] [stderr]    Compiling glutin v0.8.1
[INFO] [stderr]    Compiling gl v0.6.3
[INFO] [stderr]    Compiling jpeg-decoder v0.1.13
[INFO] [stderr]    Compiling image v0.14.0
[INFO] [stderr]    Compiling libloading v0.3.4
[INFO] [stderr]    Compiling dlib v0.3.1
[INFO] [stderr]    Compiling wayland-sys v0.8.7
[INFO] [stderr]    Compiling piston2d-opengl_graphics v0.45.0
[INFO] [stderr]    Compiling wayland-window v0.5.0
[INFO] [stderr]    Compiling wayland-kbd v0.8.0
[INFO] [stderr]    Compiling winit v0.6.4
[INFO] [stderr]    Compiling pistoncore-glutin_window v0.37.0
[INFO] [stderr]    Compiling sudoku v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[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] 61 | /         for i in 0..9 {
[INFO] [stderr] 62 | |             if (self.cells[i][ind[0]] == val) {
[INFO] [stderr] 63 | |                 return false;
[INFO] [stderr] 64 | |             }
[INFO] [stderr] ...  |
[INFO] [stderr] 67 | |             }
[INFO] [stderr] 68 | |         }
[INFO] [stderr]    | |_________- rustdoc does not generate documentation for expressions
[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 1m 10s
[INFO] running `"docker" "inspect" "07cf3d7aabfb0cb1ccd5306d8151260ee8abed6a7053bdfe4d5a8e0cee08fd55"`
[INFO] running `"docker" "rm" "-f" "07cf3d7aabfb0cb1ccd5306d8151260ee8abed6a7053bdfe4d5a8e0cee08fd55"`
[INFO] [stdout] 07cf3d7aabfb0cb1ccd5306d8151260ee8abed6a7053bdfe4d5a8e0cee08fd55
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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=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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 3803b64f2f338ef13e311ae630794e0929cc37ed3e0c31fe7ef0c86ea21e51f9
[INFO] running `"docker" "start" "-a" "3803b64f2f338ef13e311ae630794e0929cc37ed3e0c31fe7ef0c86ea21e51f9"`
[INFO] [stderr]    Compiling sudoku v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[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] 61 | /         for i in 0..9 {
[INFO] [stderr] 62 | |             if (self.cells[i][ind[0]] == val) {
[INFO] [stderr] 63 | |                 return false;
[INFO] [stderr] 64 | |             }
[INFO] [stderr] ...  |
[INFO] [stderr] 67 | |             }
[INFO] [stderr] 68 | |         }
[INFO] [stderr]    | |_________- rustdoc does not generate documentation for expressions
[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 1.38s
[INFO] running `"docker" "inspect" "3803b64f2f338ef13e311ae630794e0929cc37ed3e0c31fe7ef0c86ea21e51f9"`
[INFO] running `"docker" "rm" "-f" "3803b64f2f338ef13e311ae630794e0929cc37ed3e0c31fe7ef0c86ea21e51f9"`
[INFO] [stdout] 3803b64f2f338ef13e311ae630794e0929cc37ed3e0c31fe7ef0c86ea21e51f9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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=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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 1bd3467af8c2c038f8eade95b4ebf82af185adcf03993e0d01a94f964d94cc8a
[INFO] running `"docker" "start" "-a" "1bd3467af8c2c038f8eade95b4ebf82af185adcf03993e0d01a94f964d94cc8a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/sudoku-4ffe7959ea1978a5
[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" "1bd3467af8c2c038f8eade95b4ebf82af185adcf03993e0d01a94f964d94cc8a"`
[INFO] running `"docker" "rm" "-f" "1bd3467af8c2c038f8eade95b4ebf82af185adcf03993e0d01a94f964d94cc8a"`
[INFO] [stdout] 1bd3467af8c2c038f8eade95b4ebf82af185adcf03993e0d01a94f964d94cc8a