[INFO] updating cached repository ronniebnorth/rust_iron_playground
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ronniebnorth/rust_iron_playground
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ronniebnorth/rust_iron_playground" "work/ex/beta-1.38-1/sources/1.37.0/gh/ronniebnorth/rust_iron_playground"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ronniebnorth/rust_iron_playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ronniebnorth/rust_iron_playground" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ronniebnorth/rust_iron_playground"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ronniebnorth/rust_iron_playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d181a4ace8936b110e4f6b567bd4fedf3ed8e731
[INFO] sha for GitHub repo ronniebnorth/rust_iron_playground: d181a4ace8936b110e4f6b567bd4fedf3ed8e731
[INFO] validating manifest of ronniebnorth/rust_iron_playground 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 ronniebnorth/rust_iron_playground 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 ronniebnorth/rust_iron_playground
[INFO] finished frobbing ronniebnorth/rust_iron_playground
[INFO] frobbed toml for ronniebnorth/rust_iron_playground written to work/ex/beta-1.38-1/sources/1.37.0/gh/ronniebnorth/rust_iron_playground/Cargo.toml
[INFO] started frobbing ronniebnorth/rust_iron_playground
[INFO] finished frobbing ronniebnorth/rust_iron_playground
[INFO] frobbed toml for ronniebnorth/rust_iron_playground written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ronniebnorth/rust_iron_playground/Cargo.toml
[INFO] crate ronniebnorth/rust_iron_playground 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing ronniebnorth/rust_iron_playground 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-4/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/ronniebnorth/rust_iron_playground:/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] 5f16061b29fe99728b92c2022405e01a359cca89a3632cfe49a77bbd69a4b959
[INFO] running `"docker" "start" "-a" "5f16061b29fe99728b92c2022405e01a359cca89a3632cfe49a77bbd69a4b959"`
[INFO] [stderr]    Compiling log v0.3.8
[INFO] [stderr]    Compiling libc v0.2.33
[INFO] [stderr]    Compiling byteorder v1.1.0
[INFO] [stderr]    Compiling httparse v1.2.3
[INFO] [stderr]    Compiling error v0.1.9
[INFO] [stderr]    Compiling idna v0.1.4
[INFO] [stderr]    Compiling conduit-mime-types v0.7.3
[INFO] [stderr]    Compiling plugin v0.2.6
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling base64 v0.6.0
[INFO] [stderr]    Compiling time v0.1.38
[INFO] [stderr]    Compiling num_cpus v1.7.0
[INFO] [stderr]    Compiling rand v0.3.18
[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]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling hyper v0.10.13
[INFO] [stderr]    Compiling iron v0.5.1
[INFO] [stderr]    Compiling rust_iron_playground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.52s
[INFO] running `"docker" "inspect" "5f16061b29fe99728b92c2022405e01a359cca89a3632cfe49a77bbd69a4b959"`
[INFO] running `"docker" "rm" "-f" "5f16061b29fe99728b92c2022405e01a359cca89a3632cfe49a77bbd69a4b959"`
[INFO] [stdout] 5f16061b29fe99728b92c2022405e01a359cca89a3632cfe49a77bbd69a4b959
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/ronniebnorth/rust_iron_playground:/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] 4aef703948c1d91b6258f06bc8b8472822842b49b0428b89303fa8163a1f2ea2
[INFO] running `"docker" "start" "-a" "4aef703948c1d91b6258f06bc8b8472822842b49b0428b89303fa8163a1f2ea2"`
[INFO] [stderr]    Compiling rust_iron_playground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `"docker" "inspect" "4aef703948c1d91b6258f06bc8b8472822842b49b0428b89303fa8163a1f2ea2"`
[INFO] running `"docker" "rm" "-f" "4aef703948c1d91b6258f06bc8b8472822842b49b0428b89303fa8163a1f2ea2"`
[INFO] [stdout] 4aef703948c1d91b6258f06bc8b8472822842b49b0428b89303fa8163a1f2ea2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/ronniebnorth/rust_iron_playground:/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] 96f7c7777eb08e70d0a750a91ed664843adc79407b76d4555d6cee62bd70c079
[INFO] running `"docker" "start" "-a" "96f7c7777eb08e70d0a750a91ed664843adc79407b76d4555d6cee62bd70c079"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_iron_playground-9b4f4b5461f11dfe
[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" "96f7c7777eb08e70d0a750a91ed664843adc79407b76d4555d6cee62bd70c079"`
[INFO] running `"docker" "rm" "-f" "96f7c7777eb08e70d0a750a91ed664843adc79407b76d4555d6cee62bd70c079"`
[INFO] [stdout] 96f7c7777eb08e70d0a750a91ed664843adc79407b76d4555d6cee62bd70c079