Sep 02 13:50:59.850 INFO checking futures-preview-0.3.0-alpha.3 against try#952c7dbfa2628309f557b367929ffc17af20b332 for pr-53851
Sep 02 13:50:59.850 INFO running: cargo +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets
Sep 02 13:50:59.851 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53851/try#952c7dbfa2628309f557b367929ffc17af20b332:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-0/try#952c7dbfa2628309f557b367929ffc17af20b332:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 02 13:51:00.054 INFO blam! 5cae98d4a4f8f8246cf17f42c544e99fb64a75703958f2ad6e713b006b93f6dd
Sep 02 13:51:00.056 INFO running `"docker" "start" "-a" "5cae98d4a4f8f8246cf17f42c544e99fb64a75703958f2ad6e713b006b93f6dd"`
Sep 02 13:51:00.911 INFO kablam!     Checking futures-core-preview v0.3.0-alpha.3
Sep 02 13:51:01.479 INFO kablam! error[E0432]: unresolved import `core::mem::PinMut`
Sep 02 13:51:01.479 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.3/src/future.rs:4:5
Sep 02 13:51:01.479 INFO kablam!   |
Sep 02 13:51:01.479 INFO kablam! 4 | use core::mem::PinMut;
Sep 02 13:51:01.479 INFO kablam!   |     ^^^^^^^^^^^^^^^^^ no `PinMut` in `mem`
Sep 02 13:51:01.480 INFO kablam! 
Sep 02 13:51:01.480 INFO kablam! error[E0432]: unresolved import `core::mem::PinMut`
Sep 02 13:51:01.480 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.3/src/stream.rs:5:5
Sep 02 13:51:01.480 INFO kablam!   |
Sep 02 13:51:01.480 INFO kablam! 5 | use core::mem::PinMut;
Sep 02 13:51:01.480 INFO kablam!   |     ^^^^^^^^^^^^^^^^^ no `PinMut` in `mem`
Sep 02 13:51:01.480 INFO kablam! 
Sep 02 13:51:01.480 INFO kablam! error[E0603]: struct `PinBox` is private
Sep 02 13:51:01.480 INFO kablam!    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.3/src/stream.rs:128:27
Sep 02 13:51:01.480 INFO kablam!     |
Sep 02 13:51:01.480 INFO kablam! 128 |     use std::boxed::{Box, PinBox};
Sep 02 13:51:01.480 INFO kablam!     |                           ^^^^^^
Sep 02 13:51:01.480 INFO kablam! 
Sep 02 13:51:01.497 INFO kablam! error[E0207]: the type parameter `S` is not constrained by the impl trait, self type, or predicates
Sep 02 13:51:01.497 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.3/src/stream.rs:68:10
Sep 02 13:51:01.497 INFO kablam!    |
Sep 02 13:51:01.497 INFO kablam! 68 | impl<'a, S: ?Sized + Stream> Stream for PinMut<'a, S> {
Sep 02 13:51:01.497 INFO kablam!    |          ^ unconstrained type parameter
Sep 02 13:51:01.497 INFO kablam! 
Sep 02 13:51:01.498 INFO kablam! error[E0207]: the type parameter `S` is not constrained by the impl trait, self type, or predicates
Sep 02 13:51:01.498 INFO kablam!    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.3/src/stream.rs:141:10
Sep 02 13:51:01.498 INFO kablam!     |
Sep 02 13:51:01.498 INFO kablam! 141 |     impl<S: ?Sized + Stream> Stream for PinBox<S> {
Sep 02 13:51:01.498 INFO kablam!     |          ^ unconstrained type parameter
Sep 02 13:51:01.498 INFO kablam! 
Sep 02 13:51:01.498 INFO kablam! error: aborting due to 5 previous errors
Sep 02 13:51:01.498 INFO kablam! 
Sep 02 13:51:01.498 INFO kablam! Some errors occurred: E0207, E0432, E0603.
Sep 02 13:51:01.498 INFO kablam! For more information about an error, try `rustc --explain E0207`.
Sep 02 13:51:01.506 INFO kablam! error: Could not compile `futures-core-preview`.
Sep 02 13:51:01.506 INFO kablam! 
Sep 02 13:51:01.506 INFO kablam! To learn more, run the command again with --verbose.
Sep 02 13:51:01.507 INFO kablam! su: No module specific data is present
Sep 02 13:51:02.058 INFO running `"docker" "rm" "-f" "5cae98d4a4f8f8246cf17f42c544e99fb64a75703958f2ad6e713b006b93f6dd"`
Sep 02 13:51:02.217 INFO blam! 5cae98d4a4f8f8246cf17f42c544e99fb64a75703958f2ad6e713b006b93f6dd