[INFO] updating cached repository majorz/hyper-tryout
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/majorz/hyper-tryout
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/majorz/hyper-tryout" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/majorz/hyper-tryout"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/majorz/hyper-tryout'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/majorz/hyper-tryout" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/majorz/hyper-tryout"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/majorz/hyper-tryout'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8e72b392821f91be6580ecce11d89e290087a20c
[INFO] sha for GitHub repo majorz/hyper-tryout: 8e72b392821f91be6580ecce11d89e290087a20c
[INFO] validating manifest of majorz/hyper-tryout 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 majorz/hyper-tryout 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 majorz/hyper-tryout
[INFO] finished frobbing majorz/hyper-tryout
[INFO] frobbed toml for majorz/hyper-tryout written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/majorz/hyper-tryout/Cargo.toml
[INFO] started frobbing majorz/hyper-tryout
[INFO] finished frobbing majorz/hyper-tryout
[INFO] frobbed toml for majorz/hyper-tryout written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/majorz/hyper-tryout/Cargo.toml
[INFO] crate majorz/hyper-tryout 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] [stderr] error: the lock file /mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/majorz/hyper-tryout/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/hyperium/hyper.git`
[INFO] [stderr]     Updating git repository `https://github.com/hyperium/h2`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/hyperium/hyper.git`
[INFO] [stderr]     Updating git repository `https://github.com/hyperium/h2`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking majorz/hyper-tryout against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-7/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/majorz/hyper-tryout:/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 29f0e72931f6b66430565d294a0651809eb7078993fdae170cbf87941974a226
[INFO] running `"docker" "start" "-a" "29f0e72931f6b66430565d294a0651809eb7078993fdae170cbf87941974a226"`
[INFO] [stderr]    Compiling proc-macro2 v1.0.2
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking tower-service v0.3.0-alpha.1
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking tracing-core v0.1.5
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking http-body v0.2.0-alpha.1
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking tokio-io v0.2.0-alpha.4
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking tokio-codec v0.2.0-alpha.4
[INFO] [stderr]     Checking tower-make v0.1.0-alpha.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking tokio-sync v0.2.0-alpha.4
[INFO] [stderr] error[E0658]: async fn is unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-sync-0.2.0-alpha.4/src/lock.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 | /     pub async fn lock(&mut self) -> LockGuard<T> {
[INFO] [stderr] 113 | |         poll_fn(|cx| self.poll_lock(cx)).await
[INFO] [stderr] 114 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/50547
[INFO] [stderr]     = help: add `#![feature(async_await)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: async/await is unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-sync-0.2.0-alpha.4/src/lock.rs:113:9
[INFO] [stderr]     |
[INFO] [stderr] 113 |         poll_fn(|cx| self.poll_lock(cx)).await
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/50547
[INFO] [stderr]     = help: add `#![feature(async_await)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: async fn is unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-sync-0.2.0-alpha.4/src/mpsc/bounded.rs:164:5
[INFO] [stderr]     |
[INFO] [stderr] 164 | /     pub async fn recv(&mut self) -> Option<T> {
[INFO] [stderr] 165 | |         use futures_util::future::poll_fn;
[INFO] [stderr] 166 | |
[INFO] [stderr] 167 | |         poll_fn(|cx| self.poll_recv(cx)).await
[INFO] [stderr] 168 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/50547
[INFO] [stderr]     = help: add `#![feature(async_await)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: async/await is unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-sync-0.2.0-alpha.4/src/mpsc/bounded.rs:167:9
[INFO] [stderr]     |
[INFO] [stderr] 167 |         poll_fn(|cx| self.poll_recv(cx)).await
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/50547
[INFO] [stderr]     = help: add `#![feature(async_await)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: async fn is unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-sync-0.2.0-alpha.4/src/mpsc/bounded.rs:238:5
[INFO] [stderr]     |
[INFO] [stderr] 238 | /     pub async fn send(&mut self, value: T) -> Result<(), SendError> {
[INFO] [stderr] 239 | |         use futures_util::future::poll_fn;
[INFO] [stderr] 240 | |
[INFO] [stderr] 241 | |         poll_fn(|cx| self.poll_ready(cx)).await?;
[INFO] [stderr] 242 | |
[INFO] [stderr] 243 | |         self.try_send(value).map_err(|_| SendError(()))
[INFO] [stderr] 244 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/50547
[INFO] [stderr]     = help: add `#![feature(async_await)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: async/await is unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-sync-0.2.0-alpha.4/src/mpsc/bounded.rs:241:9
[INFO] [stderr]     |
[INFO] [stderr] 241 |         poll_fn(|cx| self.poll_ready(cx)).await?;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/50547
[INFO] [stderr]     = help: add `#![feature(async_await)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: async fn is unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-sync-0.2.0-alpha.4/src/mpsc/unbounded.rs:134:5
[INFO] [stderr]     |
[INFO] [stderr] 134 | /     pub async fn recv(&mut self) -> Option<T> {
[INFO] [stderr] 135 | |         use futures_util::future::poll_fn;
[INFO] [stderr] 136 | |
[INFO] [stderr] 137 | |         poll_fn(|cx| self.poll_recv(cx)).await
[INFO] [stderr] 138 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/50547
[INFO] [stderr]     = help: add `#![feature(async_await)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: async/await is unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-sync-0.2.0-alpha.4/src/mpsc/unbounded.rs:137:9
[INFO] [stderr]     |
[INFO] [stderr] 137 |         poll_fn(|cx| self.poll_recv(cx)).await
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/50547
[INFO] [stderr]     = help: add `#![feature(async_await)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: async fn is unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-sync-0.2.0-alpha.4/src/oneshot.rs:223:5
[INFO] [stderr]     |
[INFO] [stderr] 223 | /     pub async fn closed(&mut self) {
[INFO] [stderr] 224 | |         use futures_util::future::poll_fn;
[INFO] [stderr] 225 | |
[INFO] [stderr] 226 | |         poll_fn(|cx| self.poll_closed(cx)).await
[INFO] [stderr] 227 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/50547
[INFO] [stderr]     = help: add `#![feature(async_await)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: async/await is unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-sync-0.2.0-alpha.4/src/oneshot.rs:226:9
[INFO] [stderr]     |
[INFO] [stderr] 226 |         poll_fn(|cx| self.poll_closed(cx)).await
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/50547
[INFO] [stderr]     = help: add `#![feature(async_await)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: async fn is unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-sync-0.2.0-alpha.4/src/watch.rs:248:5
[INFO] [stderr]     |
[INFO] [stderr] 248 | /     pub async fn recv_ref(&mut self) -> Option<Ref<'_, T>> {
[INFO] [stderr] 249 | |         let shared = &self.shared;
[INFO] [stderr] 250 | |         let inner = &self.inner;
[INFO] [stderr] 251 | |         let version = self.ver;
[INFO] [stderr] ...   |
[INFO] [stderr] 259 | |         }
[INFO] [stderr] 260 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/50547
[INFO] [stderr]     = help: add `#![feature(async_await)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: async/await is unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-sync-0.2.0-alpha.4/src/watch.rs:253:15
[INFO] [stderr]     |
[INFO] [stderr] 253 |         match poll_fn(|cx| poll_lock(cx, shared, inner, version)).await {
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/50547
[INFO] [stderr]     = help: add `#![feature(async_await)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: async fn is unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-sync-0.2.0-alpha.4/src/watch.rs:295:5
[INFO] [stderr]     |
[INFO] [stderr] 295 | /     pub async fn recv(&mut self) -> Option<T> {
[INFO] [stderr] 296 | |         self.recv_ref().await.map(|v_ref| v_ref.clone())
[INFO] [stderr] 297 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/50547
[INFO] [stderr]     = help: add `#![feature(async_await)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: async/await is unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-sync-0.2.0-alpha.4/src/watch.rs:296:9
[INFO] [stderr]     |
[INFO] [stderr] 296 |         self.recv_ref().await.map(|v_ref| v_ref.clone())
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/50547
[INFO] [stderr]     = help: add `#![feature(async_await)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: async fn is unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-sync-0.2.0-alpha.4/src/watch.rs:386:5
[INFO] [stderr]     |
[INFO] [stderr] 386 | /     pub async fn closed(&mut self) {
[INFO] [stderr] 387 | |         poll_fn(|cx| self.poll_close(cx)).await
[INFO] [stderr] 388 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/50547
[INFO] [stderr]     = help: add `#![feature(async_await)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: async/await is unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-sync-0.2.0-alpha.4/src/watch.rs:387:9
[INFO] [stderr]     |
[INFO] [stderr] 387 |         poll_fn(|cx| self.poll_close(cx)).await
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/50547
[INFO] [stderr]     = help: add `#![feature(async_await)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 16 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: Could not compile `tokio-sync`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "29f0e72931f6b66430565d294a0651809eb7078993fdae170cbf87941974a226"`
[INFO] running `"docker" "rm" "-f" "29f0e72931f6b66430565d294a0651809eb7078993fdae170cbf87941974a226"`
[INFO] [stdout] 29f0e72931f6b66430565d294a0651809eb7078993fdae170cbf87941974a226