Sep 10 18:49:56.302 INFO checking futures-black-hole-0.2.2 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 18:49:56.302 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 18:49:56.302 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-7/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/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=1000" "-e" "CMD=cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 18:49:56.523 INFO blam! 5c09b4908c25685649fe0683854faaa9b08b7ff520ce4005035b38e938515591
Sep 10 18:49:56.525 INFO running `"docker" "start" "-a" "5c09b4908c25685649fe0683854faaa9b08b7ff520ce4005035b38e938515591"`
Sep 10 18:49:57.299 INFO kablam! usermod: no changes
Sep 10 18:49:57.374 INFO kablam!     Checking futures-await-await-macro v0.1.1
Sep 10 18:49:57.375 INFO kablam!    Compiling syn v0.14.9
Sep 10 18:50:17.534 INFO kablam!    Compiling futures-await-async-macro v0.1.4
Sep 10 18:50:22.411 INFO kablam!     Checking futures-await v0.1.1
Sep 10 18:50:22.788 INFO kablam!     Checking futures-black-hole v0.2.2 (file:///source)
Sep 10 18:50:23.253 INFO kablam! error[E0659]: `await` is ambiguous
Sep 10 18:50:23.253 INFO kablam!    --> src/black_hole.rs:140:9
Sep 10 18:50:23.253 INFO kablam!     |
Sep 10 18:50:23.253 INFO kablam! 140 |         await!(b)?;
Sep 10 18:50:23.253 INFO kablam!     |         ^^^^^
Sep 10 18:50:23.253 INFO kablam!     |
Sep 10 18:50:23.253 INFO kablam! note: `await` could refer to the name imported here
Sep 10 18:50:23.253 INFO kablam!    --> src/black_hole.rs:100:9
Sep 10 18:50:23.253 INFO kablam!     |
Sep 10 18:50:23.253 INFO kablam! 100 |     use futures::prelude::*;
Sep 10 18:50:23.253 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^
Sep 10 18:50:23.253 INFO kablam!     = note: `await` is also a builtin macro
Sep 10 18:50:23.253 INFO kablam!     = note: consider adding an explicit import of `await` to disambiguate
Sep 10 18:50:23.253 INFO kablam! 
Sep 10 18:50:23.354 INFO kablam! error: aborting due to previous error
Sep 10 18:50:23.354 INFO kablam! 
Sep 10 18:50:23.354 INFO kablam! For more information about this error, try `rustc --explain E0659`.
Sep 10 18:50:23.361 INFO kablam! error: Could not compile `futures-black-hole`.
Sep 10 18:50:23.361 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 10 18:50:23.403 INFO kablam! warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Sep 10 18:50:23.403 INFO kablam!  --> src/lib.rs:1:12
Sep 10 18:50:23.403 INFO kablam!   |
Sep 10 18:50:23.403 INFO kablam! 1 | #![feature(proc_macro, conservative_impl_trait, generators)]
Sep 10 18:50:23.403 INFO kablam!   |            ^^^^^^^^^^
Sep 10 18:50:23.403 INFO kablam!   |
Sep 10 18:50:23.403 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 10 18:50:23.403 INFO kablam! 
Sep 10 18:50:23.403 INFO kablam! warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Sep 10 18:50:23.403 INFO kablam!  --> src/lib.rs:1:24
Sep 10 18:50:23.403 INFO kablam!   |
Sep 10 18:50:23.403 INFO kablam! 1 | #![feature(proc_macro, conservative_impl_trait, generators)]
Sep 10 18:50:23.403 INFO kablam!   |                        ^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 18:50:23.403 INFO kablam! 
Sep 10 18:50:23.431 INFO kablam! error: build failed
Sep 10 18:50:23.432 INFO kablam! su: No module specific data is present
Sep 10 18:50:23.975 INFO running `"docker" "rm" "-f" "5c09b4908c25685649fe0683854faaa9b08b7ff520ce4005035b38e938515591"`
Sep 10 18:50:24.083 INFO blam! 5c09b4908c25685649fe0683854faaa9b08b7ff520ce4005035b38e938515591