[INFO] updating cached repository jimmycuadra/connect_four
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jimmycuadra/connect_four
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jimmycuadra/connect_four" "work/ex/beta-1.37-6/sources/1.36.0/gh/jimmycuadra/connect_four"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/jimmycuadra/connect_four'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jimmycuadra/connect_four" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jimmycuadra/connect_four"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jimmycuadra/connect_four'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b4e2c3a6feefe1b5e5a84c014fcc8b8fa53dea21
[INFO] sha for GitHub repo jimmycuadra/connect_four: b4e2c3a6feefe1b5e5a84c014fcc8b8fa53dea21
[INFO] validating manifest of jimmycuadra/connect_four 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 jimmycuadra/connect_four 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 jimmycuadra/connect_four
[INFO] finished frobbing jimmycuadra/connect_four
[INFO] frobbed toml for jimmycuadra/connect_four written to work/ex/beta-1.37-6/sources/1.36.0/gh/jimmycuadra/connect_four/Cargo.toml
[INFO] started frobbing jimmycuadra/connect_four
[INFO] finished frobbing jimmycuadra/connect_four
[INFO] frobbed toml for jimmycuadra/connect_four written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jimmycuadra/connect_four/Cargo.toml
[INFO] crate jimmycuadra/connect_four 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 jimmycuadra/connect_four 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-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/jimmycuadra/connect_four:/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] 2e8d74227ee342796349868cc2d51cbfb9992c710029b25b23ba8dee854af34c
[INFO] running `"docker" "start" "-a" "2e8d74227ee342796349868cc2d51cbfb9992c710029b25b23ba8dee854af34c"`
[INFO] [stderr]    Compiling connect_four v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/main.rs:133:20
[INFO] [stderr]     |
[INFO] [stderr] 133 |         for col in (0..self.column_count) {
[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 `for` head expression
[INFO] [stderr]    --> src/main.rs:163:31
[INFO] [stderr]     |
[INFO] [stderr] 163 |                 for offset in (1..4) {
[INFO] [stderr]     |                               ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/main.rs:194:31
[INFO] [stderr]     |
[INFO] [stderr] 194 |                 for offset in (1..4) {
[INFO] [stderr]     |                               ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `"docker" "inspect" "2e8d74227ee342796349868cc2d51cbfb9992c710029b25b23ba8dee854af34c"`
[INFO] running `"docker" "rm" "-f" "2e8d74227ee342796349868cc2d51cbfb9992c710029b25b23ba8dee854af34c"`
[INFO] [stdout] 2e8d74227ee342796349868cc2d51cbfb9992c710029b25b23ba8dee854af34c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/jimmycuadra/connect_four:/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] aec0af7b6e8343bc604fb8e285a2c7847213529a9fa678a4db27e78758d03912
[INFO] running `"docker" "start" "-a" "aec0af7b6e8343bc604fb8e285a2c7847213529a9fa678a4db27e78758d03912"`
[INFO] [stderr]    Compiling connect_four v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/main.rs:133:20
[INFO] [stderr]     |
[INFO] [stderr] 133 |         for col in (0..self.column_count) {
[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 `for` head expression
[INFO] [stderr]    --> src/main.rs:163:31
[INFO] [stderr]     |
[INFO] [stderr] 163 |                 for offset in (1..4) {
[INFO] [stderr]     |                               ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/main.rs:194:31
[INFO] [stderr]     |
[INFO] [stderr] 194 |                 for offset in (1..4) {
[INFO] [stderr]     |                               ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `"docker" "inspect" "aec0af7b6e8343bc604fb8e285a2c7847213529a9fa678a4db27e78758d03912"`
[INFO] running `"docker" "rm" "-f" "aec0af7b6e8343bc604fb8e285a2c7847213529a9fa678a4db27e78758d03912"`
[INFO] [stdout] aec0af7b6e8343bc604fb8e285a2c7847213529a9fa678a4db27e78758d03912
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/jimmycuadra/connect_four:/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] a32591424ce91547f5a402ad16176a59eb3c89b8113f3107b5e1182052cbbe30
[INFO] running `"docker" "start" "-a" "a32591424ce91547f5a402ad16176a59eb3c89b8113f3107b5e1182052cbbe30"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/connect_four-2e9bf9ae7fc1d499
[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" "a32591424ce91547f5a402ad16176a59eb3c89b8113f3107b5e1182052cbbe30"`
[INFO] running `"docker" "rm" "-f" "a32591424ce91547f5a402ad16176a59eb3c89b8113f3107b5e1182052cbbe30"`
[INFO] [stdout] a32591424ce91547f5a402ad16176a59eb3c89b8113f3107b5e1182052cbbe30