Sep 01 03:51:42.910 INFO checking futures-black-hole-0.2.2 against try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b for pr-53578
Sep 01 03:51:42.910 INFO running: cargo +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets
Sep 01 03:51:42.910 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53578/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-2/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/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 +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 03:51:43.118 INFO blam! 21b0d11e4b67db4ac4da99a0f5f50b3025a5787863f41d4fb48cae87802313cf
Sep 01 03:51:43.120 INFO running `"docker" "start" "-a" "21b0d11e4b67db4ac4da99a0f5f50b3025a5787863f41d4fb48cae87802313cf"`
Sep 01 03:51:43.849 INFO kablam!     Checking futures-black-hole v0.2.2 (file:///source)
Sep 01 03:51:44.632 INFO kablam! warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Sep 01 03:51:44.632 INFO kablam!  --> src/lib.rs:1:12
Sep 01 03:51:44.632 INFO kablam!   |
Sep 01 03:51:44.632 INFO kablam! 1 | #![feature(proc_macro, conservative_impl_trait, generators)]
Sep 01 03:51:44.632 INFO kablam!   |            ^^^^^^^^^^
Sep 01 03:51:44.632 INFO kablam!   |
Sep 01 03:51:44.632 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 01 03:51:44.632 INFO kablam! 
Sep 01 03:51:44.632 INFO kablam! warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Sep 01 03:51:44.632 INFO kablam!  --> src/lib.rs:1:24
Sep 01 03:51:44.632 INFO kablam!   |
Sep 01 03:51:44.632 INFO kablam! 1 | #![feature(proc_macro, conservative_impl_trait, generators)]
Sep 01 03:51:44.632 INFO kablam!   |                        ^^^^^^^^^^^^^^^^^^^^^^^
Sep 01 03:51:44.632 INFO kablam! 
Sep 01 03:51:44.774 INFO kablam! error[E0659]: `await` is ambiguous
Sep 01 03:51:44.774 INFO kablam!    --> src/black_hole.rs:140:9
Sep 01 03:51:44.774 INFO kablam!     |
Sep 01 03:51:44.774 INFO kablam! 140 |         await!(b)?;
Sep 01 03:51:44.774 INFO kablam!     |         ^^^^^
Sep 01 03:51:44.774 INFO kablam!     |
Sep 01 03:51:44.774 INFO kablam! note: `await` could refer to the name imported here
Sep 01 03:51:44.775 INFO kablam!    --> src/black_hole.rs:100:9
Sep 01 03:51:44.775 INFO kablam!     |
Sep 01 03:51:44.775 INFO kablam! 100 |     use futures::prelude::*;
Sep 01 03:51:44.775 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^
Sep 01 03:51:44.775 INFO kablam!     = note: `await` is also a builtin macro
Sep 01 03:51:44.775 INFO kablam!     = note: consider adding an explicit import of `await` to disambiguate
Sep 01 03:51:44.775 INFO kablam! 
Sep 01 03:51:44.916 INFO kablam! error: aborting due to previous error
Sep 01 03:51:44.916 INFO kablam! 
Sep 01 03:51:44.916 INFO kablam! For more information about this error, try `rustc --explain E0659`.
Sep 01 03:51:44.924 INFO kablam! error: Could not compile `futures-black-hole`.
Sep 01 03:51:44.924 INFO kablam! 
Sep 01 03:51:44.924 INFO kablam! To learn more, run the command again with --verbose.
Sep 01 03:51:44.925 INFO kablam! su: No module specific data is present
Sep 01 03:51:45.356 INFO running `"docker" "rm" "-f" "21b0d11e4b67db4ac4da99a0f5f50b3025a5787863f41d4fb48cae87802313cf"`
Sep 01 03:51:45.452 INFO blam! 21b0d11e4b67db4ac4da99a0f5f50b3025a5787863f41d4fb48cae87802313cf