Sep 04 17:15:08.181 INFO checking futures-black-hole-0.2.2 against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893
Sep 04 17:15:08.181 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets
Sep 04 17:15:08.181 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53893/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-0/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/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 +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 17:15:08.385 INFO blam! 89bba7c21cec8b87d4252dd9c8af4a0836ae70ca88aa3db0af84b086c3e36c23
Sep 04 17:15:08.388 INFO running `"docker" "start" "-a" "89bba7c21cec8b87d4252dd9c8af4a0836ae70ca88aa3db0af84b086c3e36c23"`
Sep 04 17:15:09.073 INFO kablam!     Checking futures-black-hole v0.2.2 (file:///source)
Sep 04 17:15:09.983 INFO kablam! warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Sep 04 17:15:09.983 INFO kablam!  --> src/lib.rs:1:12
Sep 04 17:15:09.983 INFO kablam!   |
Sep 04 17:15:09.983 INFO kablam! 1 | #![feature(proc_macro, conservative_impl_trait, generators)]
Sep 04 17:15:09.983 INFO kablam!   |            ^^^^^^^^^^
Sep 04 17:15:09.983 INFO kablam!   |
Sep 04 17:15:09.983 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 04 17:15:09.983 INFO kablam! 
Sep 04 17:15:09.985 INFO kablam! warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Sep 04 17:15:09.985 INFO kablam!  --> src/lib.rs:1:24
Sep 04 17:15:09.985 INFO kablam!   |
Sep 04 17:15:09.985 INFO kablam! 1 | #![feature(proc_macro, conservative_impl_trait, generators)]
Sep 04 17:15:09.985 INFO kablam!   |                        ^^^^^^^^^^^^^^^^^^^^^^^
Sep 04 17:15:09.985 INFO kablam! 
Sep 04 17:15:10.100 INFO kablam! error[E0659]: `await` is ambiguous
Sep 04 17:15:10.100 INFO kablam!    --> src/black_hole.rs:140:9
Sep 04 17:15:10.100 INFO kablam!     |
Sep 04 17:15:10.100 INFO kablam! 140 |         await!(b)?;
Sep 04 17:15:10.100 INFO kablam!     |         ^^^^^
Sep 04 17:15:10.100 INFO kablam!     |
Sep 04 17:15:10.100 INFO kablam! note: `await` could refer to the name imported here
Sep 04 17:15:10.100 INFO kablam!    --> src/black_hole.rs:100:9
Sep 04 17:15:10.100 INFO kablam!     |
Sep 04 17:15:10.100 INFO kablam! 100 |     use futures::prelude::*;
Sep 04 17:15:10.100 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^
Sep 04 17:15:10.100 INFO kablam!     = note: `await` is also a builtin macro
Sep 04 17:15:10.100 INFO kablam!     = note: consider adding an explicit import of `await` to disambiguate
Sep 04 17:15:10.100 INFO kablam! 
Sep 04 17:15:10.258 INFO kablam! error: aborting due to previous error
Sep 04 17:15:10.258 INFO kablam! 
Sep 04 17:15:10.258 INFO kablam! For more information about this error, try `rustc --explain E0659`.
Sep 04 17:15:10.266 INFO kablam! error: Could not compile `futures-black-hole`.
Sep 04 17:15:10.266 INFO kablam! 
Sep 04 17:15:10.266 INFO kablam! To learn more, run the command again with --verbose.
Sep 04 17:15:10.267 INFO kablam! su: No module specific data is present
Sep 04 17:15:10.583 INFO running `"docker" "rm" "-f" "89bba7c21cec8b87d4252dd9c8af4a0836ae70ca88aa3db0af84b086c3e36c23"`
Sep 04 17:15:10.687 INFO blam! 89bba7c21cec8b87d4252dd9c8af4a0836ae70ca88aa3db0af84b086c3e36c23