Aug 30 17:32:44.955 INFO checking futures-black-hole-0.2.2 against master#ede55518431154bc761f7b2438cce9078c162700 for pr-53707
Aug 30 17:32:44.955 INFO running: cargo +ede55518431154bc761f7b2438cce9078c162700-alt check --frozen --all --all-targets
Aug 30 17:32:44.955 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53707/master#ede55518431154bc761f7b2438cce9078c162700:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53707/worker-0/master#ede55518431154bc761f7b2438cce9078c162700:/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 +ede55518431154bc761f7b2438cce9078c162700-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 30 17:32:45.112 INFO blam! 5a60f39b338f8a5f676430f5c4d8a410f5e42451b724d8b7ac01b6bb0dc2714d
Aug 30 17:32:45.114 INFO running `"docker" "start" "-a" "5a60f39b338f8a5f676430f5c4d8a410f5e42451b724d8b7ac01b6bb0dc2714d"`
Aug 30 17:32:45.691 INFO kablam!     Checking futures-black-hole v0.2.2 (file:///source)
Aug 30 17:32:46.644 INFO kablam! warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Aug 30 17:32:46.644 INFO kablam!  --> src/lib.rs:1:12
Aug 30 17:32:46.644 INFO kablam!   |
Aug 30 17:32:46.644 INFO kablam! 1 | #![feature(proc_macro, conservative_impl_trait, generators)]
Aug 30 17:32:46.644 INFO kablam!   |            ^^^^^^^^^^
Aug 30 17:32:46.644 INFO kablam!   |
Aug 30 17:32:46.644 INFO kablam!   = note: #[warn(stable_features)] on by default
Aug 30 17:32:46.644 INFO kablam! 
Aug 30 17:32:46.644 INFO kablam! warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Aug 30 17:32:46.644 INFO kablam!  --> src/lib.rs:1:24
Aug 30 17:32:46.644 INFO kablam!   |
Aug 30 17:32:46.644 INFO kablam! 1 | #![feature(proc_macro, conservative_impl_trait, generators)]
Aug 30 17:32:46.644 INFO kablam!   |                        ^^^^^^^^^^^^^^^^^^^^^^^
Aug 30 17:32:46.645 INFO kablam! 
Aug 30 17:32:46.785 INFO kablam! error[E0659]: `await` is ambiguous
Aug 30 17:32:46.785 INFO kablam!    --> src/black_hole.rs:140:9
Aug 30 17:32:46.785 INFO kablam!     |
Aug 30 17:32:46.785 INFO kablam! 140 |         await!(b)?;
Aug 30 17:32:46.785 INFO kablam!     |         ^^^^^
Aug 30 17:32:46.785 INFO kablam!     |
Aug 30 17:32:46.785 INFO kablam! note: `await` could refer to the name imported here
Aug 30 17:32:46.785 INFO kablam!    --> src/black_hole.rs:100:9
Aug 30 17:32:46.785 INFO kablam!     |
Aug 30 17:32:46.785 INFO kablam! 100 |     use futures::prelude::*;
Aug 30 17:32:46.785 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^
Aug 30 17:32:46.785 INFO kablam!     = note: `await` is also a builtin macro
Aug 30 17:32:46.785 INFO kablam!     = note: consider adding an explicit import of `await` to disambiguate
Aug 30 17:32:46.785 INFO kablam! 
Aug 30 17:32:46.983 INFO kablam! error: aborting due to previous error
Aug 30 17:32:46.983 INFO kablam! 
Aug 30 17:32:46.983 INFO kablam! For more information about this error, try `rustc --explain E0659`.
Aug 30 17:32:46.992 INFO kablam! error: Could not compile `futures-black-hole`.
Aug 30 17:32:46.992 INFO kablam! 
Aug 30 17:32:46.992 INFO kablam! To learn more, run the command again with --verbose.
Aug 30 17:32:46.994 INFO kablam! su: No module specific data is present
Aug 30 17:32:47.446 INFO running `"docker" "rm" "-f" "5a60f39b338f8a5f676430f5c4d8a410f5e42451b724d8b7ac01b6bb0dc2714d"`
Aug 30 17:32:47.542 INFO blam! 5a60f39b338f8a5f676430f5c4d8a410f5e42451b724d8b7ac01b6bb0dc2714d