[INFO] updating cached repository tahmidsadik112/rust-async-await-examples [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/tahmidsadik112/rust-async-await-examples [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/tahmidsadik112/rust-async-await-examples" "work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/tahmidsadik112/rust-async-await-examples"` [INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/tahmidsadik112/rust-async-await-examples'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/tahmidsadik112/rust-async-await-examples" "work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/tahmidsadik112/rust-async-await-examples"` [INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/tahmidsadik112/rust-async-await-examples'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 858988e00d47ddf9448194ebd63ba1dee4451625 [INFO] sha for GitHub repo tahmidsadik112/rust-async-await-examples: 858988e00d47ddf9448194ebd63ba1dee4451625 [INFO] validating manifest of tahmidsadik112/rust-async-await-examples on toolchain master#efe2f32a6b8217425f361ec7c206910c611c03ee [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of tahmidsadik112/rust-async-await-examples on toolchain try#78b0bd8441ef961f6475e3d47fe3bca38cb83432 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing tahmidsadik112/rust-async-await-examples [INFO] finished frobbing tahmidsadik112/rust-async-await-examples [INFO] frobbed toml for tahmidsadik112/rust-async-await-examples written to work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/tahmidsadik112/rust-async-await-examples/Cargo.toml [INFO] started frobbing tahmidsadik112/rust-async-await-examples [INFO] finished frobbing tahmidsadik112/rust-async-await-examples [INFO] frobbed toml for tahmidsadik112/rust-async-await-examples written to work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/tahmidsadik112/rust-async-await-examples/Cargo.toml [INFO] crate tahmidsadik112/rust-async-await-examples already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking tahmidsadik112/rust-async-await-examples against try#78b0bd8441ef961f6475e3d47fe3bca38cb83432 for pr-60039 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039/worker-5/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/tahmidsadik112/rust-async-await-examples:/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" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 7c4f7026deee1e0978bfae0cf7c4752e1c18fa3afa1f983a64c47ade8b296a74 [INFO] running `"docker" "start" "-a" "7c4f7026deee1e0978bfae0cf7c4752e1c18fa3afa1f983a64c47ade8b296a74"` [INFO] [stderr] Compiling syn v0.15.29 [INFO] [stderr] Checking futures v0.1.25 [INFO] [stderr] Checking either v1.5.1 [INFO] [stderr] Compiling proc-macro-nested v0.1.3 [INFO] [stderr] Checking pin-utils v0.1.0-alpha.4 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_chacha v0.1.1 [INFO] [stderr] Checking futures-core-preview v0.3.0-alpha.13 [INFO] [stderr] error[E0053]: method `poll` has an incompatible type for trait [INFO] [stderr] --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.13/src/future/future_obj.rs:64:5 [INFO] [stderr] | [INFO] [stderr] 64 | fn poll(self: Pin<&mut Self>, waker: &Waker) -> Poll { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ in mutability [INFO] [stderr] | [INFO] [stderr] = note: expected type `fn(std::pin::Pin<&mut future::future_obj::LocalFutureObj<'a, T>>, &mut std::task::Context<'_>) -> std::task::Poll` [INFO] [stderr] found type `fn(std::pin::Pin<&mut future::future_obj::LocalFutureObj<'a, T>>, &std::task::Waker) -> std::task::Poll` [INFO] [stderr] [INFO] [stderr] error[E0053]: method `poll` has an incompatible type for trait [INFO] [stderr] --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.13/src/future/future_obj.rs:114:5 [INFO] [stderr] | [INFO] [stderr] 114 | fn poll(self: Pin<&mut Self>, waker: &Waker) -> Poll { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ in mutability [INFO] [stderr] | [INFO] [stderr] = note: expected type `fn(std::pin::Pin<&mut future::future_obj::FutureObj<'a, T>>, &mut std::task::Context<'_>) -> std::task::Poll` [INFO] [stderr] found type `fn(std::pin::Pin<&mut future::future_obj::FutureObj<'a, T>>, &std::task::Waker) -> std::task::Poll` [INFO] [stderr] [INFO] [stderr] error: aborting due to 2 previous errors [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0053`. [INFO] [stderr] error: Could not compile `futures-core-preview`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "7c4f7026deee1e0978bfae0cf7c4752e1c18fa3afa1f983a64c47ade8b296a74"` [INFO] running `"docker" "rm" "-f" "7c4f7026deee1e0978bfae0cf7c4752e1c18fa3afa1f983a64c47ade8b296a74"` [INFO] [stdout] 7c4f7026deee1e0978bfae0cf7c4752e1c18fa3afa1f983a64c47ade8b296a74