[INFO] cloning repository hustshawn/rust-iron-demo
[INFO] running `"git" "clone" "--bare" "git://github.com/hustshawn/rust-iron-demo.git" "work/cache/sources/gh/hustshawn/rust-iron-demo"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/hustshawn/rust-iron-demo'...
[INFO] running `"git" "clone" "work/cache/sources/gh/hustshawn/rust-iron-demo" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/hustshawn/rust-iron-demo"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/hustshawn/rust-iron-demo'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hustshawn/rust-iron-demo" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/hustshawn/rust-iron-demo"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/hustshawn/rust-iron-demo'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8f8107108916d5bed8c0b23adb975fb99cd665ed
[INFO] sha for GitHub repo hustshawn/rust-iron-demo: 8f8107108916d5bed8c0b23adb975fb99cd665ed
[INFO] validating manifest of hustshawn/rust-iron-demo on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of hustshawn/rust-iron-demo on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing hustshawn/rust-iron-demo
[INFO] finished frobbing hustshawn/rust-iron-demo
[INFO] frobbed toml for hustshawn/rust-iron-demo written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/hustshawn/rust-iron-demo/Cargo.toml
[INFO] started frobbing hustshawn/rust-iron-demo
[INFO] finished frobbing hustshawn/rust-iron-demo
[INFO] frobbed toml for hustshawn/rust-iron-demo written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/hustshawn/rust-iron-demo/Cargo.toml
[INFO] crate hustshawn/rust-iron-demo already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing hustshawn/rust-iron-demo against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/hustshawn/rust-iron-demo:/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=forbid" "-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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] 793afea0f72b873ef02ef860c2f24f8795bba6004d9e7ddeeded03f5a06c8f2d
[INFO] running `"docker" "start" "-a" "793afea0f72b873ef02ef860c2f24f8795bba6004d9e7ddeeded03f5a06c8f2d"`
[INFO] [stderr]    Compiling log v0.3.8
[INFO] [stderr]    Compiling percent-encoding v1.0.0
[INFO] [stderr]    Compiling httparse v1.2.3
[INFO] [stderr]    Compiling route-recognizer v0.1.12
[INFO] [stderr]    Compiling num_cpus v1.6.2
[INFO] [stderr]    Compiling rand v0.3.16
[INFO] [stderr]    Compiling base64 v0.5.2
[INFO] [stderr]    Compiling url v1.5.1
[INFO] [stderr]    Compiling mime v0.2.6
[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-1.5.1/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 iron v0.5.1
[INFO] [stderr]    Compiling router v0.5.1
[INFO] [stderr]    Compiling iron-prj v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `req`
[INFO] [stderr]   --> src/main.rs:99:12
[INFO] [stderr]    |
[INFO] [stderr] 99 | fn handler(req: &mut Request) -> IronResult<Response> {
[INFO] [stderr]    |            ^^^ help: consider prefixing with an underscore: `_req`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.77s
[INFO] running `"docker" "inspect" "793afea0f72b873ef02ef860c2f24f8795bba6004d9e7ddeeded03f5a06c8f2d"`
[INFO] running `"docker" "rm" "-f" "793afea0f72b873ef02ef860c2f24f8795bba6004d9e7ddeeded03f5a06c8f2d"`
[INFO] [stdout] 793afea0f72b873ef02ef860c2f24f8795bba6004d9e7ddeeded03f5a06c8f2d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/hustshawn/rust-iron-demo:/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=forbid" "-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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] c34901f9b2ecd7fc95f5a9ce1651878ad3490325af4432a89363f8445a8c42be
[INFO] running `"docker" "start" "-a" "c34901f9b2ecd7fc95f5a9ce1651878ad3490325af4432a89363f8445a8c42be"`
[INFO] [stderr]    Compiling iron-prj v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `req`
[INFO] [stderr]   --> src/main.rs:99:12
[INFO] [stderr]    |
[INFO] [stderr] 99 | fn handler(req: &mut Request) -> IronResult<Response> {
[INFO] [stderr]    |            ^^^ help: consider prefixing with an underscore: `_req`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `"docker" "inspect" "c34901f9b2ecd7fc95f5a9ce1651878ad3490325af4432a89363f8445a8c42be"`
[INFO] running `"docker" "rm" "-f" "c34901f9b2ecd7fc95f5a9ce1651878ad3490325af4432a89363f8445a8c42be"`
[INFO] [stdout] c34901f9b2ecd7fc95f5a9ce1651878ad3490325af4432a89363f8445a8c42be
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/hustshawn/rust-iron-demo:/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=forbid" "-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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen"`
[INFO] [stdout] 8b7137129e0e96afd8963aa7c2e61f8cd5a16656acb750329a0b350de9e87859
[INFO] running `"docker" "start" "-a" "8b7137129e0e96afd8963aa7c2e61f8cd5a16656acb750329a0b350de9e87859"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/iron_prj-f9a047f6cc132cce
[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" "8b7137129e0e96afd8963aa7c2e61f8cd5a16656acb750329a0b350de9e87859"`
[INFO] running `"docker" "rm" "-f" "8b7137129e0e96afd8963aa7c2e61f8cd5a16656acb750329a0b350de9e87859"`
[INFO] [stdout] 8b7137129e0e96afd8963aa7c2e61f8cd5a16656acb750329a0b350de9e87859