[INFO] updating cached repository mattcl/are-we-merged-yet
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mattcl/are-we-merged-yet
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mattcl/are-we-merged-yet" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/mattcl/are-we-merged-yet"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/mattcl/are-we-merged-yet'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mattcl/are-we-merged-yet" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/mattcl/are-we-merged-yet"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/mattcl/are-we-merged-yet'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 38880f502873c7c07b7feaff9b04e16aa51be2dd
[INFO] sha for GitHub repo mattcl/are-we-merged-yet: 38880f502873c7c07b7feaff9b04e16aa51be2dd
[INFO] validating manifest of mattcl/are-we-merged-yet on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mattcl/are-we-merged-yet on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mattcl/are-we-merged-yet
[INFO] finished frobbing mattcl/are-we-merged-yet
[INFO] frobbed toml for mattcl/are-we-merged-yet written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/mattcl/are-we-merged-yet/Cargo.toml
[INFO] started frobbing mattcl/are-we-merged-yet
[INFO] finished frobbing mattcl/are-we-merged-yet
[INFO] frobbed toml for mattcl/are-we-merged-yet written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/mattcl/are-we-merged-yet/Cargo.toml
[INFO] crate mattcl/are-we-merged-yet already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mattcl/are-we-merged-yet against try#75eff020d0923c035c2fe220db4a0465cd847048 for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-4/try#75eff020d0923c035c2fe220db4a0465cd847048:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/mattcl/are-we-merged-yet:/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" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 115ed651b1338231b27aee9b5fb57013f73ca7db5e3ab112d568487eb163f951
[INFO] running `"docker" "start" "-a" "115ed651b1338231b27aee9b5fb57013f73ca7db5e3ab112d568487eb163f951"`
[INFO] [stderr]    Compiling rustc-demangle v0.1.3
[INFO] [stderr]     Checking csv v0.14.7
[INFO] [stderr]    Compiling libgit2-sys v0.6.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr]     Checking clap v2.20.0
[INFO] [stderr]     Checking atty v0.2.1
[INFO] [stderr]     Checking url v1.2.4
[INFO] [stderr]    Compiling backtrace v0.3.0
[INFO] [stderr]    Compiling error-chain v0.7.2
[INFO] [stderr]     Checking prettytable-rs v0.6.6
[INFO] [stderr]    Compiling metadeps v1.1.1
[INFO] [stderr] error[E0713]: borrow may still be in use when destructor runs
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.2.4/src/form_urlencoded.rs:246:40
[INFO] [stderr]     |
[INFO] [stderr] 244 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 245 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 246 |     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] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0713`.
[INFO] [stderr] error: Could not compile `url`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "115ed651b1338231b27aee9b5fb57013f73ca7db5e3ab112d568487eb163f951"`
[INFO] running `"docker" "rm" "-f" "115ed651b1338231b27aee9b5fb57013f73ca7db5e3ab112d568487eb163f951"`
[INFO] [stdout] 115ed651b1338231b27aee9b5fb57013f73ca7db5e3ab112d568487eb163f951