[INFO] updating cached repository lentzi90/AI-playground
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lentzi90/AI-playground
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lentzi90/AI-playground" "work/ex/beta-1.37-6/sources/1.36.0/gh/lentzi90/AI-playground"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/lentzi90/AI-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lentzi90/AI-playground" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lentzi90/AI-playground"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lentzi90/AI-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 552e15117b50753ea248efe62d59acf72e9ce048
[INFO] sha for GitHub repo lentzi90/AI-playground: 552e15117b50753ea248efe62d59acf72e9ce048
[INFO] validating manifest of lentzi90/AI-playground 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 lentzi90/AI-playground 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 lentzi90/AI-playground
[INFO] finished frobbing lentzi90/AI-playground
[INFO] frobbed toml for lentzi90/AI-playground written to work/ex/beta-1.37-6/sources/1.36.0/gh/lentzi90/AI-playground/Cargo.toml
[INFO] started frobbing lentzi90/AI-playground
[INFO] finished frobbing lentzi90/AI-playground
[INFO] frobbed toml for lentzi90/AI-playground written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lentzi90/AI-playground/Cargo.toml
[INFO] crate lentzi90/AI-playground 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 lentzi90/AI-playground 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-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/lentzi90/AI-playground:/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] 6b83d5f8ad497231689613a6ccb8dc5d1c0eee4170747cbf4836b2978f1e2b50
[INFO] running `"docker" "start" "-a" "6b83d5f8ad497231689613a6ccb8dc5d1c0eee4170747cbf4836b2978f1e2b50"`
[INFO] [stderr]    Compiling num_cpus v1.4.0
[INFO] [stderr]    Compiling mime v0.2.3
[INFO] [stderr]    Compiling idna v0.1.1
[INFO] [stderr]    Compiling hyper v0.10.9
[INFO] [stderr]    Compiling url v1.4.0
[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-1.4.0/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] 
[INFO] [stderr]    Compiling iron v0.5.1
[INFO] [stderr]    Compiling mount v0.3.0
[INFO] [stderr]    Compiling mount v0.3.0 (https://github.com/iron/mount.git#2c3d719b)
[INFO] [stderr]    Compiling staticfile v0.4.0
[INFO] [stderr]    Compiling ai-playground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/main.rs:185:23
[INFO] [stderr]     |
[INFO] [stderr] 185 |     Ok(Response::with((iron::status::Ok)))
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.45s
[INFO] running `"docker" "inspect" "6b83d5f8ad497231689613a6ccb8dc5d1c0eee4170747cbf4836b2978f1e2b50"`
[INFO] running `"docker" "rm" "-f" "6b83d5f8ad497231689613a6ccb8dc5d1c0eee4170747cbf4836b2978f1e2b50"`
[INFO] [stdout] 6b83d5f8ad497231689613a6ccb8dc5d1c0eee4170747cbf4836b2978f1e2b50
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/lentzi90/AI-playground:/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] 2aaadbf696bde0a85fe5f06396bdc608ec04bb28c6c2c0d2fced96745c6137c0
[INFO] running `"docker" "start" "-a" "2aaadbf696bde0a85fe5f06396bdc608ec04bb28c6c2c0d2fced96745c6137c0"`
[INFO] [stderr]    Compiling ai-playground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/main.rs:185:23
[INFO] [stderr]     |
[INFO] [stderr] 185 |     Ok(Response::with((iron::status::Ok)))
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `"docker" "inspect" "2aaadbf696bde0a85fe5f06396bdc608ec04bb28c6c2c0d2fced96745c6137c0"`
[INFO] running `"docker" "rm" "-f" "2aaadbf696bde0a85fe5f06396bdc608ec04bb28c6c2c0d2fced96745c6137c0"`
[INFO] [stdout] 2aaadbf696bde0a85fe5f06396bdc608ec04bb28c6c2c0d2fced96745c6137c0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/lentzi90/AI-playground:/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] ac1c438fe5389d69fb469a381638cef77b816fa6467bec9e8096cc21edf2fcf6
[INFO] running `"docker" "start" "-a" "ac1c438fe5389d69fb469a381638cef77b816fa6467bec9e8096cc21edf2fcf6"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ai_playground-b1e1de1b0a608841
[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" "ac1c438fe5389d69fb469a381638cef77b816fa6467bec9e8096cc21edf2fcf6"`
[INFO] running `"docker" "rm" "-f" "ac1c438fe5389d69fb469a381638cef77b816fa6467bec9e8096cc21edf2fcf6"`
[INFO] [stdout] ac1c438fe5389d69fb469a381638cef77b816fa6467bec9e8096cc21edf2fcf6