[INFO] updating cached repository kiliankoe/grades-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kiliankoe/grades-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kiliankoe/grades-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/kiliankoe/grades-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/kiliankoe/grades-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kiliankoe/grades-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kiliankoe/grades-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kiliankoe/grades-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 868e94f93a25cb6c95042650e231336669fca12c
[INFO] sha for GitHub repo kiliankoe/grades-rs: 868e94f93a25cb6c95042650e231336669fca12c
[INFO] validating manifest of kiliankoe/grades-rs 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 kiliankoe/grades-rs 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 kiliankoe/grades-rs
[INFO] finished frobbing kiliankoe/grades-rs
[INFO] frobbed toml for kiliankoe/grades-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/kiliankoe/grades-rs/Cargo.toml
[INFO] started frobbing kiliankoe/grades-rs
[INFO] finished frobbing kiliankoe/grades-rs
[INFO] frobbed toml for kiliankoe/grades-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kiliankoe/grades-rs/Cargo.toml
[INFO] crate kiliankoe/grades-rs 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 kiliankoe/grades-rs against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/kiliankoe/grades-rs:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] e0bf59bfa088577ef9cc4d90b29799040820afa0b6d1953610797ce25bbc0815
[INFO] running `"docker" "start" "-a" "e0bf59bfa088577ef9cc4d90b29799040820afa0b6d1953610797ce25bbc0815"`
[INFO] [stderr]    Compiling openssl v0.9.6
[INFO] [stderr]    Compiling serde v0.8.22
[INFO] [stderr]    Compiling json v0.11.4
[INFO] [stderr]    Compiling encode_unicode v0.2.0
[INFO] [stderr]    Compiling metadeps v1.1.1
[INFO] [stderr]    Compiling num_cpus v1.2.1
[INFO] [stderr]    Compiling atty v0.2.2
[INFO] [stderr]    Compiling mime v0.2.2
[INFO] [stderr]    Compiling csv v0.14.7
[INFO] [stderr]    Compiling url v1.3.0
[INFO] [stderr]    Compiling openssl-sys v0.9.6
[INFO] [stderr]    Compiling prettytable-rs v0.6.6
[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-1.3.0/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]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling hyper v0.10.0
[INFO] [stderr]    Compiling serde_urlencoded v0.3.0
[INFO] [stderr]    Compiling serde_json v0.8.6
[INFO] [stderr]    Compiling native-tls v0.1.1
[INFO] [stderr]    Compiling reqwest v0.3.0
[INFO] [stderr]    Compiling htwdresden v0.1.0
[INFO] [stderr]    Compiling grades v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.07s
[INFO] running `"docker" "inspect" "e0bf59bfa088577ef9cc4d90b29799040820afa0b6d1953610797ce25bbc0815"`
[INFO] running `"docker" "rm" "-f" "e0bf59bfa088577ef9cc4d90b29799040820afa0b6d1953610797ce25bbc0815"`
[INFO] [stdout] e0bf59bfa088577ef9cc4d90b29799040820afa0b6d1953610797ce25bbc0815
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/kiliankoe/grades-rs:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] d5b59fc8b02e3c770ad8f5e54ba9d7fc1026e2f2745c9465d110deae0cc94410
[INFO] running `"docker" "start" "-a" "d5b59fc8b02e3c770ad8f5e54ba9d7fc1026e2f2745c9465d110deae0cc94410"`
[INFO] [stderr]    Compiling grades v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `"docker" "inspect" "d5b59fc8b02e3c770ad8f5e54ba9d7fc1026e2f2745c9465d110deae0cc94410"`
[INFO] running `"docker" "rm" "-f" "d5b59fc8b02e3c770ad8f5e54ba9d7fc1026e2f2745c9465d110deae0cc94410"`
[INFO] [stdout] d5b59fc8b02e3c770ad8f5e54ba9d7fc1026e2f2745c9465d110deae0cc94410
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/kiliankoe/grades-rs:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] bcfb87b17a65d30d8f0de2d9bc52a3bb1dd47b442ee77e3e49e6306c04cb8e4b
[INFO] running `"docker" "start" "-a" "bcfb87b17a65d30d8f0de2d9bc52a3bb1dd47b442ee77e3e49e6306c04cb8e4b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/grades-93624e7c739ffda7
[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" "bcfb87b17a65d30d8f0de2d9bc52a3bb1dd47b442ee77e3e49e6306c04cb8e4b"`
[INFO] running `"docker" "rm" "-f" "bcfb87b17a65d30d8f0de2d9bc52a3bb1dd47b442ee77e3e49e6306c04cb8e4b"`
[INFO] [stdout] bcfb87b17a65d30d8f0de2d9bc52a3bb1dd47b442ee77e3e49e6306c04cb8e4b