[INFO] updating cached repository bvtsang/xumbot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bvtsang/xumbot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bvtsang/xumbot" "work/ex/beta-1.38-1/sources/1.37.0/gh/bvtsang/xumbot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/bvtsang/xumbot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bvtsang/xumbot" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bvtsang/xumbot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bvtsang/xumbot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2e6ff88d9d425d3cca6e09afedf4ce48c71595ef
[INFO] sha for GitHub repo bvtsang/xumbot: 2e6ff88d9d425d3cca6e09afedf4ce48c71595ef
[INFO] validating manifest of bvtsang/xumbot 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 bvtsang/xumbot 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 bvtsang/xumbot
[INFO] finished frobbing bvtsang/xumbot
[INFO] frobbed toml for bvtsang/xumbot written to work/ex/beta-1.38-1/sources/1.37.0/gh/bvtsang/xumbot/Cargo.toml
[INFO] started frobbing bvtsang/xumbot
[INFO] finished frobbing bvtsang/xumbot
[INFO] frobbed toml for bvtsang/xumbot written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bvtsang/xumbot/Cargo.toml
[INFO] crate bvtsang/xumbot 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 bvtsang/xumbot against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bvtsang/xumbot:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 999d33e8b61de1cc7d07a254b7071898c1846e8f0387c8c2851a00ce208876e6
[INFO] running `"docker" "start" "-a" "999d33e8b61de1cc7d07a254b7071898c1846e8f0387c8c2851a00ce208876e6"`
[INFO] [stderr]    Compiling version_check v0.1.2
[INFO] [stderr]    Compiling num_cpus v1.6.2
[INFO] [stderr]    Compiling libflate v0.1.9
[INFO] [stderr]    Compiling openssl-sys v0.9.14
[INFO] [stderr]    Compiling openssl v0.9.14
[INFO] [stderr]    Compiling url v1.5.1
[INFO] [stderr]    Compiling num v0.1.39
[INFO] [stderr]    Compiling chrono v0.4.0
[INFO] [stderr]    Compiling unicase v1.4.2
[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-1.5.1/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 hyper v0.10.12
[INFO] [stderr]    Compiling serde_urlencoded v0.5.1
[INFO] [stderr]    Compiling native-tls v0.1.4
[INFO] [stderr]    Compiling hyper-native-tls v0.2.4
[INFO] [stderr]    Compiling reqwest v0.6.2
[INFO] [stderr]    Compiling mammut v0.8.0 (https://github.com/bvtsang/Mammut#a106a75d)
[INFO] [stderr]    Compiling xumbot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 44.78s
[INFO] running `"docker" "inspect" "999d33e8b61de1cc7d07a254b7071898c1846e8f0387c8c2851a00ce208876e6"`
[INFO] running `"docker" "rm" "-f" "999d33e8b61de1cc7d07a254b7071898c1846e8f0387c8c2851a00ce208876e6"`
[INFO] [stdout] 999d33e8b61de1cc7d07a254b7071898c1846e8f0387c8c2851a00ce208876e6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bvtsang/xumbot:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] eb9e43e96e94b41c9ccb3ed3be7e2382c4246fdb2286764cb10531f02e1eaa90
[INFO] running `"docker" "start" "-a" "eb9e43e96e94b41c9ccb3ed3be7e2382c4246fdb2286764cb10531f02e1eaa90"`
[INFO] [stderr]    Compiling xumbot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.55s
[INFO] running `"docker" "inspect" "eb9e43e96e94b41c9ccb3ed3be7e2382c4246fdb2286764cb10531f02e1eaa90"`
[INFO] running `"docker" "rm" "-f" "eb9e43e96e94b41c9ccb3ed3be7e2382c4246fdb2286764cb10531f02e1eaa90"`
[INFO] [stdout] eb9e43e96e94b41c9ccb3ed3be7e2382c4246fdb2286764cb10531f02e1eaa90
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bvtsang/xumbot:/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 3bdd11451ed2d62caeed89221696ef7a2736f2b7a6a602ae4feab5885913e93a
[INFO] running `"docker" "start" "-a" "3bdd11451ed2d62caeed89221696ef7a2736f2b7a6a602ae4feab5885913e93a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/xumbot-7b04356ceda57d3f
[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" "3bdd11451ed2d62caeed89221696ef7a2736f2b7a6a602ae4feab5885913e93a"`
[INFO] running `"docker" "rm" "-f" "3bdd11451ed2d62caeed89221696ef7a2736f2b7a6a602ae4feab5885913e93a"`
[INFO] [stdout] 3bdd11451ed2d62caeed89221696ef7a2736f2b7a6a602ae4feab5885913e93a