Sep 20 03:17:45.668 INFO checking futures-black-hole-0.2.2 against try#135b4cd023a753409d01e43b0f23d22a899feeeb for pr-54352
Sep 20 03:17:45.668 INFO running: cargo +135b4cd023a753409d01e43b0f23d22a899feeeb-alt check --frozen --all --all-targets
Sep 20 03:17:45.669 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54352/try#135b4cd023a753409d01e43b0f23d22a899feeeb:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54352/worker-3/try#135b4cd023a753409d01e43b0f23d22a899feeeb:/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 +135b4cd023a753409d01e43b0f23d22a899feeeb-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 20 03:17:45.858 INFO blam! ba972495ae832739784c0fe88c0b811fef2673fb090b7d17b14c177e0dd611d1
Sep 20 03:17:45.859 INFO running `"docker" "start" "-a" "ba972495ae832739784c0fe88c0b811fef2673fb090b7d17b14c177e0dd611d1"`
Sep 20 03:17:46.556 INFO kablam! usermod: no changes
Sep 20 03:17:46.596 INFO kablam!    Compiling proc-macro2 v0.4.19
Sep 20 03:17:46.596 INFO kablam!     Checking futures-await-await-macro v0.1.1
Sep 20 03:17:50.105 INFO kablam!    Compiling quote v0.6.8
Sep 20 03:17:51.634 INFO kablam!    Compiling syn v0.14.9
Sep 20 03:18:07.759 INFO kablam!    Compiling futures-await-async-macro v0.1.4
Sep 20 03:18:12.144 INFO kablam!     Checking futures-await v0.1.1
Sep 20 03:18:12.404 INFO kablam!     Checking futures-black-hole v0.2.2 (/source)
Sep 20 03:18:12.798 INFO kablam! warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Sep 20 03:18:12.798 INFO kablam!  --> src/lib.rs:1:12
Sep 20 03:18:12.798 INFO kablam!   |
Sep 20 03:18:12.798 INFO kablam! 1 | #![feature(proc_macro, conservative_impl_trait, generators)]
Sep 20 03:18:12.798 INFO kablam!   |            ^^^^^^^^^^
Sep 20 03:18:12.798 INFO kablam!   |
Sep 20 03:18:12.798 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 20 03:18:12.798 INFO kablam! 
Sep 20 03:18:12.798 INFO kablam! warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Sep 20 03:18:12.798 INFO kablam!  --> src/lib.rs:1:24
Sep 20 03:18:12.798 INFO kablam!   |
Sep 20 03:18:12.798 INFO kablam! 1 | #![feature(proc_macro, conservative_impl_trait, generators)]
Sep 20 03:18:12.798 INFO kablam!   |                        ^^^^^^^^^^^^^^^^^^^^^^^
Sep 20 03:18:12.798 INFO kablam! 
Sep 20 03:18:12.863 INFO kablam! error[E0659]: `await` is ambiguous
Sep 20 03:18:12.863 INFO kablam!    --> src/black_hole.rs:140:9
Sep 20 03:18:12.863 INFO kablam!     |
Sep 20 03:18:12.863 INFO kablam! 140 |         await!(b)?;
Sep 20 03:18:12.863 INFO kablam!     |         ^^^^^ ambiguous name
Sep 20 03:18:12.863 INFO kablam!     |
Sep 20 03:18:12.863 INFO kablam! note: `await` could refer to the name imported here
Sep 20 03:18:12.863 INFO kablam!    --> src/black_hole.rs:100:9
Sep 20 03:18:12.863 INFO kablam!     |
Sep 20 03:18:12.863 INFO kablam! 100 |     use futures::prelude::*;
Sep 20 03:18:12.863 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^
Sep 20 03:18:12.863 INFO kablam!     = note: `await` is also a builtin macro
Sep 20 03:18:12.863 INFO kablam!     = note: consider adding an explicit import of `await` to disambiguate
Sep 20 03:18:12.863 INFO kablam! 
Sep 20 03:18:12.943 INFO kablam! error: aborting due to previous error
Sep 20 03:18:12.943 INFO kablam! 
Sep 20 03:18:12.943 INFO kablam! For more information about this error, try `rustc --explain E0659`.
Sep 20 03:18:12.950 INFO kablam! error: Could not compile `futures-black-hole`.
Sep 20 03:18:12.950 INFO kablam! 
Sep 20 03:18:12.951 INFO kablam! To learn more, run the command again with --verbose.
Sep 20 03:18:12.952 INFO kablam! su: No module specific data is present
Sep 20 03:18:13.477 INFO running `"docker" "rm" "-f" "ba972495ae832739784c0fe88c0b811fef2673fb090b7d17b14c177e0dd611d1"`
Sep 20 03:18:13.584 INFO blam! ba972495ae832739784c0fe88c0b811fef2673fb090b7d17b14c177e0dd611d1