[INFO] crate futures-core-preview 0.3.0-alpha.10 is already in cache
[INFO] extracting crate futures-core-preview 0.3.0-alpha.10 into work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/futures-core-preview/0.3.0-alpha.10
[INFO] extracting crate futures-core-preview 0.3.0-alpha.10 into work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/futures-core-preview/0.3.0-alpha.10
[INFO] validating manifest of futures-core-preview-0.3.0-alpha.10 on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of futures-core-preview-0.3.0-alpha.10 on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing futures-core-preview-0.3.0-alpha.10
[INFO] finished frobbing futures-core-preview-0.3.0-alpha.10
[INFO] frobbed toml for futures-core-preview-0.3.0-alpha.10 written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/futures-core-preview/0.3.0-alpha.10/Cargo.toml
[INFO] started frobbing futures-core-preview-0.3.0-alpha.10
[INFO] finished frobbing futures-core-preview-0.3.0-alpha.10
[INFO] frobbed toml for futures-core-preview-0.3.0-alpha.10 written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/futures-core-preview/0.3.0-alpha.10/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing futures-core-preview-0.3.0-alpha.10 against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-6/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/futures-core-preview/0.3.0-alpha.10:/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] 656a17daa1ae3f399e2a83fa002041670f87719b2186de9546ba44bb12c0dee0
[INFO] running `"docker" "start" "-a" "656a17daa1ae3f399e2a83fa002041670f87719b2186de9546ba44bb12c0dee0"`
[INFO] [stderr] warning: the cargo feature `rename-dependency` is now stable and is no longer necessary to be listed in the manifest
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.10 (/opt/crater/workdir)
[INFO] [stderr] error[E0599]: no function or associated item named `get_mut_unchecked` found for type `std::pin::Pin<_>` in the current scope
[INFO] [stderr]    --> src/future/future_obj.rs:176:45
[INFO] [stderr]     |
[INFO] [stderr] 176 |         let mut_ref: &mut F = unsafe { Pin::get_mut_unchecked(Pin::as_mut(&mut self)) };
[INFO] [stderr]     |                                        -----^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        function or associated item not found in `std::pin::Pin<_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `get_mut_unchecked` found for type `std::pin::Pin<_>` in the current scope
[INFO] [stderr]    --> src/future/future_obj.rs:216:49
[INFO] [stderr]     |
[INFO] [stderr] 216 |             let mut_ref: &mut F = unsafe { Pin::get_mut_unchecked(Pin::as_mut(&mut self)) };
[INFO] [stderr]     |                                            -----^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                                            |
[INFO] [stderr]     |                                            function or associated item not found in `std::pin::Pin<_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the trait bound `P: std::marker::Unpin` is not satisfied in `std::pin::Pin<P>`
[INFO] [stderr]   --> src/stream/mod.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 83 |         Pin::get_mut(self).as_mut().poll_next(lw)
[INFO] [stderr]    |         ^^^^^^^^^^^^ within `std::pin::Pin<P>`, the trait `std::marker::Unpin` is not implemented for `P`
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding a `where P: std::marker::Unpin` bound
[INFO] [stderr]    = note: required because it appears within the type `std::pin::Pin<P>`
[INFO] [stderr]    = note: required by `<std::pin::Pin<&'a mut T>>::get_mut`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `get_mut_unchecked` found for type `std::pin::Pin<_>` in the current scope
[INFO] [stderr]   --> src/stream/mod.rs:96:24
[INFO] [stderr]    |
[INFO] [stderr] 96 |             match Pin::get_mut_unchecked(self) {
[INFO] [stderr]    |                   -----^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                   |
[INFO] [stderr]    |                   function or associated item not found in `std::pin::Pin<_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `poll_next` found for type `std::pin::Pin<_>` in the current scope
[INFO] [stderr]   --> src/stream/mod.rs:97:58
[INFO] [stderr]    |
[INFO] [stderr] 97 |                 Either::Left(a) => Pin::new_unchecked(a).poll_next(lw),
[INFO] [stderr]    |                                                          ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: Pin::new_unchecked(a) is a function, perhaps you wish to call it
[INFO] [stderr]    = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stderr]    = note: the following traits define an item `poll_next`, perhaps you need to implement one of them:
[INFO] [stderr]            candidate #1: `stream::stream_obj::UnsafeStreamObj`
[INFO] [stderr]            candidate #2: `stream::Stream`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `poll_next` found for type `std::pin::Pin<_>` in the current scope
[INFO] [stderr]   --> src/stream/mod.rs:98:59
[INFO] [stderr]    |
[INFO] [stderr] 98 |                 Either::Right(b) => Pin::new_unchecked(b).poll_next(lw),
[INFO] [stderr]    |                                                           ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: Pin::new_unchecked(b) is a function, perhaps you wish to call it
[INFO] [stderr]    = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stderr]    = note: the following traits define an item `poll_next`, perhaps you need to implement one of them:
[INFO] [stderr]            candidate #1: `stream::stream_obj::UnsafeStreamObj`
[INFO] [stderr]            candidate #2: `stream::Stream`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `get_mut_unchecked` found for type `std::pin::Pin<_>` in the current scope
[INFO] [stderr]    --> src/stream/stream_obj.rs:178:23
[INFO] [stderr]     |
[INFO] [stderr] 178 |         unsafe { Pin::get_mut_unchecked(self) as *mut F as *mut () }
[INFO] [stderr]     |                  -----^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                  |
[INFO] [stderr]     |                  function or associated item not found in `std::pin::Pin<_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `get_mut_unchecked` found for type `std::pin::Pin<_>` in the current scope
[INFO] [stderr]    --> src/stream/stream_obj.rs:218:49
[INFO] [stderr]     |
[INFO] [stderr] 218 |             let mut_ref: &mut F = unsafe { Pin::get_mut_unchecked(Pin::as_mut(&mut self)) };
[INFO] [stderr]     |                                            -----^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                                            |
[INFO] [stderr]     |                                            function or associated item not found in `std::pin::Pin<_>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 8 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors occurred: E0277, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0277`.
[INFO] [stderr] error: Could not compile `futures-core-preview`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "656a17daa1ae3f399e2a83fa002041670f87719b2186de9546ba44bb12c0dee0"`
[INFO] running `"docker" "rm" "-f" "656a17daa1ae3f399e2a83fa002041670f87719b2186de9546ba44bb12c0dee0"`
[INFO] [stdout] 656a17daa1ae3f399e2a83fa002041670f87719b2186de9546ba44bb12c0dee0