[INFO] updating cached repository methodin/tiger
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/methodin/tiger
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/methodin/tiger" "work/ex/beta-1.38-1/sources/1.37.0/gh/methodin/tiger"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/methodin/tiger'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/methodin/tiger" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/methodin/tiger"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/methodin/tiger'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 24cd5f7adf93f7a5ba1e4f64a0fe2e44306882c9
[INFO] sha for GitHub repo methodin/tiger: 24cd5f7adf93f7a5ba1e4f64a0fe2e44306882c9
[INFO] validating manifest of methodin/tiger 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 methodin/tiger 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 methodin/tiger
[INFO] finished frobbing methodin/tiger
[INFO] frobbed toml for methodin/tiger written to work/ex/beta-1.38-1/sources/1.37.0/gh/methodin/tiger/Cargo.toml
[INFO] started frobbing methodin/tiger
[INFO] finished frobbing methodin/tiger
[INFO] frobbed toml for methodin/tiger written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/methodin/tiger/Cargo.toml
[INFO] crate methodin/tiger 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 methodin/tiger 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/methodin/tiger:/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] 504963b52d984e78f854b287afec941c431acb64923553e8db4c9a2e0c232b04
[INFO] running `"docker" "start" "-a" "504963b52d984e78f854b287afec941c431acb64923553e8db4c9a2e0c232b04"`
[INFO] [stderr]    Compiling md5 v0.3.4
[INFO] [stderr]    Compiling num_cpus v1.5.1
[INFO] [stderr]    Compiling thread-id v3.1.0
[INFO] [stderr]    Compiling num-integer v0.1.34
[INFO] [stderr]    Compiling xml-rs v0.6.0
[INFO] [stderr]    Compiling serde_json v0.9.10
[INFO] [stderr]    Compiling bincode v0.8.0
[INFO] [stderr]    Compiling net2 v0.2.29
[INFO] [stderr]    Compiling retry v0.4.0
[INFO] [stderr]    Compiling twox-hash v1.1.0
[INFO] [stderr]    Compiling nom v3.1.0
[INFO] [stderr]    Compiling rusoto_core v0.26.0
[INFO] [stderr]    Compiling serde_yaml v0.7.1
[INFO] [stderr]    Compiling thread_local v0.3.3
[INFO] [stderr]    Compiling url v1.5.0
[INFO] [stderr]    Compiling num-iter v0.1.33
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]    Compiling num v0.1.39
[INFO] [stderr]    Compiling native-tls v0.1.2
[INFO] [stderr]    Compiling regex v0.2.2
[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-1.5.0/src/form_urlencoded.rs:251:40
[INFO] [stderr]     |
[INFO] [stderr] 249 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 250 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 251 |     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 chrono v0.2.25
[INFO] [stderr]    Compiling chrono v0.3.1
[INFO] [stderr]    Compiling hyper v0.10.12
[INFO] [stderr]    Compiling serde_urlencoded v0.4.3
[INFO] [stderr]    Compiling rayon v0.7.1
[INFO] [stderr]    Compiling ring v0.9.7
[INFO] [stderr]    Compiling mysql v11.1.2
[INFO] [stderr]    Compiling hyper-native-tls v0.2.4
[INFO] [stderr]    Compiling reqwest v0.4.0
[INFO] [stderr]    Compiling rusoto_credential v0.7.0
[INFO] [stderr]    Compiling rusoto_s3 v0.26.0
[INFO] [stderr]    Compiling tiger v0.0.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 22s
[INFO] running `"docker" "inspect" "504963b52d984e78f854b287afec941c431acb64923553e8db4c9a2e0c232b04"`
[INFO] running `"docker" "rm" "-f" "504963b52d984e78f854b287afec941c431acb64923553e8db4c9a2e0c232b04"`
[INFO] [stdout] 504963b52d984e78f854b287afec941c431acb64923553e8db4c9a2e0c232b04
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/methodin/tiger:/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] 391eb64ec593c98006139a67191d650357ee212d5d481b95c0885615851e9c6a
[INFO] running `"docker" "start" "-a" "391eb64ec593c98006139a67191d650357ee212d5d481b95c0885615851e9c6a"`
[INFO] [stderr]    Compiling tiger v0.0.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.46s
[INFO] running `"docker" "inspect" "391eb64ec593c98006139a67191d650357ee212d5d481b95c0885615851e9c6a"`
[INFO] running `"docker" "rm" "-f" "391eb64ec593c98006139a67191d650357ee212d5d481b95c0885615851e9c6a"`
[INFO] [stdout] 391eb64ec593c98006139a67191d650357ee212d5d481b95c0885615851e9c6a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/methodin/tiger:/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] ab37d27394e7aaf1d8fad89a6a2ef4ed84e1a64d3e753aa527aca6aab583cea9
[INFO] running `"docker" "start" "-a" "ab37d27394e7aaf1d8fad89a6a2ef4ed84e1a64d3e753aa527aca6aab583cea9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tiger-dec8a0aefd119e91
[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" "ab37d27394e7aaf1d8fad89a6a2ef4ed84e1a64d3e753aa527aca6aab583cea9"`
[INFO] running `"docker" "rm" "-f" "ab37d27394e7aaf1d8fad89a6a2ef4ed84e1a64d3e753aa527aca6aab583cea9"`
[INFO] [stdout] ab37d27394e7aaf1d8fad89a6a2ef4ed84e1a64d3e753aa527aca6aab583cea9