[INFO] updating cached repository koenigsreiter/freevpn-spawner
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/koenigsreiter/freevpn-spawner
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/koenigsreiter/freevpn-spawner" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/koenigsreiter/freevpn-spawner"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/koenigsreiter/freevpn-spawner'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/koenigsreiter/freevpn-spawner" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/koenigsreiter/freevpn-spawner"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/koenigsreiter/freevpn-spawner'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f3a00814607a83ad2a5d5b5b00b18485d302da46
[INFO] sha for GitHub repo koenigsreiter/freevpn-spawner: f3a00814607a83ad2a5d5b5b00b18485d302da46
[INFO] validating manifest of koenigsreiter/freevpn-spawner on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of koenigsreiter/freevpn-spawner on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing koenigsreiter/freevpn-spawner
[INFO] finished frobbing koenigsreiter/freevpn-spawner
[INFO] frobbed toml for koenigsreiter/freevpn-spawner written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/koenigsreiter/freevpn-spawner/Cargo.toml
[INFO] started frobbing koenigsreiter/freevpn-spawner
[INFO] finished frobbing koenigsreiter/freevpn-spawner
[INFO] frobbed toml for koenigsreiter/freevpn-spawner written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/koenigsreiter/freevpn-spawner/Cargo.toml
[INFO] crate koenigsreiter/freevpn-spawner already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking koenigsreiter/freevpn-spawner against master#452087b4bf18cece2d52d7cd8c9147195e5404bf for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-4/master#452087b4bf18cece2d52d7cd8c9147195e5404bf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/koenigsreiter/freevpn-spawner:/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" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8cccca54652fc83ab7b71cf5c98cfd60711cd85213db86427c3b256f8dac3a1e
[INFO] running `"docker" "start" "-a" "8cccca54652fc83ab7b71cf5c98cfd60711cd85213db86427c3b256f8dac3a1e"`
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]    Compiling syn v0.15.31
[INFO] [stderr]    Compiling openssl v0.10.20
[INFO] [stderr]     Checking thin-slice v0.1.1
[INFO] [stderr]     Checking ego-tree v0.6.0
[INFO] [stderr]     Checking want v0.0.6
[INFO] [stderr]     Checking tendril v0.4.1
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking ctrlc v3.1.1
[INFO] [stderr]     Checking cookie v0.11.0
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking http v0.1.17
[INFO] [stderr]     Checking arrayvec v0.4.10
[INFO] [stderr]     Checking servo_arc v0.1.1
[INFO] [stderr]    Compiling native-tls v0.2.2
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]     Checking publicsuffix v1.5.2
[INFO] [stderr]    Compiling selectors v0.21.0
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.13
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]     Checking tokio v0.1.18
[INFO] [stderr]     Checking h2 v0.1.18
[INFO] [stderr]     Checking hyper v0.12.27
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]    Compiling cssparser v0.25.3
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling html5ever v0.22.5
[INFO] [stderr]    Compiling cssparser-macros v0.3.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr] warning[E0506]: cannot assign to `self.input.cached_token` because it is borrowed
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/cssparser-0.25.3/src/parser.rs:584:17
[INFO] [stderr]     |
[INFO] [stderr] 559 |     pub fn next_including_whitespace_and_comments(&mut self) -> Result<&Token<'i>, BasicParseError<'i>> {
[INFO] [stderr]     |                                                   - let's call the lifetime of this reference `'1`
[INFO] [stderr] ...
[INFO] [stderr] 572 |             Some(ref cached_token)
[INFO] [stderr]     |                  ---------------- borrow of `self.input.cached_token` occurs here
[INFO] [stderr] ...
[INFO] [stderr] 584 |                 self.input.cached_token = Some(CachedToken {
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.input.cached_token` occurs here
[INFO] [stderr] ...
[INFO] [stderr] 596 |         Ok(token)
[INFO] [stderr]     |         --------- returning this value requires that `self.input.cached_token.0` is borrowed for `'1`
[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 markup5ever v0.7.5
[INFO] [stderr]     Checking cookie_store v0.5.1
[INFO] [stderr]     Checking reqwest v0.9.15
[INFO] [stderr]     Checking scraper v0.10.0
[INFO] [stderr]     Checking freevpn-spawner v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 34s
[INFO] running `"docker" "inspect" "8cccca54652fc83ab7b71cf5c98cfd60711cd85213db86427c3b256f8dac3a1e"`
[INFO] running `"docker" "rm" "-f" "8cccca54652fc83ab7b71cf5c98cfd60711cd85213db86427c3b256f8dac3a1e"`
[INFO] [stdout] 8cccca54652fc83ab7b71cf5c98cfd60711cd85213db86427c3b256f8dac3a1e