[INFO] updating cached repository matthew-piziak/tictactoe
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/matthew-piziak/tictactoe
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/matthew-piziak/tictactoe" "work/ex/beta-1.37-6/sources/1.36.0/gh/matthew-piziak/tictactoe"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/matthew-piziak/tictactoe'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/matthew-piziak/tictactoe" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/matthew-piziak/tictactoe"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/matthew-piziak/tictactoe'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4fedf8238fa72d851fd61970aa162deaee1f9d50
[INFO] sha for GitHub repo matthew-piziak/tictactoe: 4fedf8238fa72d851fd61970aa162deaee1f9d50
[INFO] validating manifest of matthew-piziak/tictactoe 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 matthew-piziak/tictactoe 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 matthew-piziak/tictactoe
[INFO] finished frobbing matthew-piziak/tictactoe
[INFO] frobbed toml for matthew-piziak/tictactoe written to work/ex/beta-1.37-6/sources/1.36.0/gh/matthew-piziak/tictactoe/Cargo.toml
[INFO] started frobbing matthew-piziak/tictactoe
[INFO] finished frobbing matthew-piziak/tictactoe
[INFO] frobbed toml for matthew-piziak/tictactoe written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/matthew-piziak/tictactoe/Cargo.toml
[INFO] crate matthew-piziak/tictactoe 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 matthew-piziak/tictactoe against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/matthew-piziak/tictactoe:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 865b08d33c3f1fd6394174a4906238a189091750f0ea6a6126a9036f68bd9071
[INFO] running `"docker" "start" "-a" "865b08d33c3f1fd6394174a4906238a189091750f0ea6a6126a9036f68bd9071"`
[INFO] [stderr]    Compiling httparse v1.2.0
[INFO] [stderr]    Compiling serde v0.8.18
[INFO] [stderr]    Compiling unicode-bidi v0.2.3
[INFO] [stderr]    Compiling conduit-mime-types v0.7.3
[INFO] [stderr]    Compiling plugin v0.2.6
[INFO] [stderr]    Compiling idna v0.1.0
[INFO] [stderr]    Compiling url v1.2.3
[INFO] [stderr] warning[E0713]: borrow may still be in use when destructor runs
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.2.3/src/form_urlencoded.rs:246:40
[INFO] [stderr]     |
[INFO] [stderr] 244 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 245 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 246 |     fn finish(self) -> &'a mut ::Url { self.url }
[INFO] [stderr]     |                                        ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        returning this value requires that `*self.url` is borrowed for `'a`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling cookie v0.2.5
[INFO] [stderr]    Compiling serde_json v0.8.3
[INFO] [stderr]    Compiling hyper v0.9.12
[INFO] [stderr]    Compiling iron v0.4.0
[INFO] [stderr]    Compiling persistent v0.2.1
[INFO] [stderr]    Compiling router v0.4.0 (https://github.com/iron/router.git#6c124ddb)
[INFO] [stderr]    Compiling bodyparser v0.4.1
[INFO] [stderr]    Compiling urlencoded v0.4.1
[INFO] [stderr]    Compiling tictactoe v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.67s
[INFO] running `"docker" "inspect" "865b08d33c3f1fd6394174a4906238a189091750f0ea6a6126a9036f68bd9071"`
[INFO] running `"docker" "rm" "-f" "865b08d33c3f1fd6394174a4906238a189091750f0ea6a6126a9036f68bd9071"`
[INFO] [stdout] 865b08d33c3f1fd6394174a4906238a189091750f0ea6a6126a9036f68bd9071
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/matthew-piziak/tictactoe:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 734b7574fce5786ab6fbd86226f72ef65b447429fa45495fac7a2736ed49d688
[INFO] running `"docker" "start" "-a" "734b7574fce5786ab6fbd86226f72ef65b447429fa45495fac7a2736ed49d688"`
[INFO] [stderr]    Compiling tictactoe v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.85s
[INFO] running `"docker" "inspect" "734b7574fce5786ab6fbd86226f72ef65b447429fa45495fac7a2736ed49d688"`
[INFO] running `"docker" "rm" "-f" "734b7574fce5786ab6fbd86226f72ef65b447429fa45495fac7a2736ed49d688"`
[INFO] [stdout] 734b7574fce5786ab6fbd86226f72ef65b447429fa45495fac7a2736ed49d688
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/matthew-piziak/tictactoe:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 18317b599586e924beb9e26e6dc47a8ef30d07f7598672b43889de52fbbcc428
[INFO] running `"docker" "start" "-a" "18317b599586e924beb9e26e6dc47a8ef30d07f7598672b43889de52fbbcc428"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tictactoe-1419e76f8327879a
[INFO] [stdout] running 5 tests
[INFO] [stdout] test board::parse_example ... ok
[INFO] [stdout] test board::parse_empty_board ... ok
[INFO] [stdout] test board::o_wins_example ... ok
[INFO] [stdout] test board::optimal_first_move ... ok
[INFO] [stdout] test board::perfect_game ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "18317b599586e924beb9e26e6dc47a8ef30d07f7598672b43889de52fbbcc428"`
[INFO] running `"docker" "rm" "-f" "18317b599586e924beb9e26e6dc47a8ef30d07f7598672b43889de52fbbcc428"`
[INFO] [stdout] 18317b599586e924beb9e26e6dc47a8ef30d07f7598672b43889de52fbbcc428