[INFO] updating cached repository Just1B/Rust_web_server
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Just1B/Rust_web_server
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Just1B/Rust_web_server" "work/ex/beta-1.37-6/sources/1.36.0/gh/Just1B/Rust_web_server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Just1B/Rust_web_server'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Just1B/Rust_web_server" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Just1B/Rust_web_server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Just1B/Rust_web_server'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 60afd71ee042c899bf4ab4891d5137bed3e2b1ec
[INFO] sha for GitHub repo Just1B/Rust_web_server: 60afd71ee042c899bf4ab4891d5137bed3e2b1ec
[INFO] validating manifest of Just1B/Rust_web_server 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 Just1B/Rust_web_server 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 Just1B/Rust_web_server
[INFO] finished frobbing Just1B/Rust_web_server
[INFO] frobbed toml for Just1B/Rust_web_server written to work/ex/beta-1.37-6/sources/1.36.0/gh/Just1B/Rust_web_server/Cargo.toml
[INFO] started frobbing Just1B/Rust_web_server
[INFO] finished frobbing Just1B/Rust_web_server
[INFO] frobbed toml for Just1B/Rust_web_server written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Just1B/Rust_web_server/Cargo.toml
[INFO] crate Just1B/Rust_web_server 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 Just1B/Rust_web_server 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-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Just1B/Rust_web_server:/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] af27703c7c9aeab981e649933cb7cc75b2dc69e91d11c2e5d98936dc3aa812c2
[INFO] running `"docker" "start" "-a" "af27703c7c9aeab981e649933cb7cc75b2dc69e91d11c2e5d98936dc3aa812c2"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]    Compiling colored v1.6.0
[INFO] [stderr]    Compiling url v1.6.0
[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-1.6.0/src/form_urlencoded.rs:261:40
[INFO] [stderr]     |
[INFO] [stderr] 259 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 260 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 261 |     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 hyper v0.10.13
[INFO] [stderr]    Compiling iron v0.5.1
[INFO] [stderr]    Compiling router v0.5.1
[INFO] [stderr]    Compiling rust_server v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.08s
[INFO] running `"docker" "inspect" "af27703c7c9aeab981e649933cb7cc75b2dc69e91d11c2e5d98936dc3aa812c2"`
[INFO] running `"docker" "rm" "-f" "af27703c7c9aeab981e649933cb7cc75b2dc69e91d11c2e5d98936dc3aa812c2"`
[INFO] [stdout] af27703c7c9aeab981e649933cb7cc75b2dc69e91d11c2e5d98936dc3aa812c2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Just1B/Rust_web_server:/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] 71643fabe6c78a075fb87c52a8067873d7e3ec3f761c882283feb8885fa5843a
[INFO] running `"docker" "start" "-a" "71643fabe6c78a075fb87c52a8067873d7e3ec3f761c882283feb8885fa5843a"`
[INFO] [stderr]    Compiling rust_server v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `"docker" "inspect" "71643fabe6c78a075fb87c52a8067873d7e3ec3f761c882283feb8885fa5843a"`
[INFO] running `"docker" "rm" "-f" "71643fabe6c78a075fb87c52a8067873d7e3ec3f761c882283feb8885fa5843a"`
[INFO] [stdout] 71643fabe6c78a075fb87c52a8067873d7e3ec3f761c882283feb8885fa5843a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Just1B/Rust_web_server:/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] b59acf91968d022192e6f028a4c3cba7b7214f22c9aea207921bd7e69a9fd5f9
[INFO] running `"docker" "start" "-a" "b59acf91968d022192e6f028a4c3cba7b7214f22c9aea207921bd7e69a9fd5f9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_server-be5d15903227fc20
[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" "b59acf91968d022192e6f028a4c3cba7b7214f22c9aea207921bd7e69a9fd5f9"`
[INFO] running `"docker" "rm" "-f" "b59acf91968d022192e6f028a4c3cba7b7214f22c9aea207921bd7e69a9fd5f9"`
[INFO] [stdout] b59acf91968d022192e6f028a4c3cba7b7214f22c9aea207921bd7e69a9fd5f9