Aug 02 09:37:10.709 INFO checking futures-0.1.23 against 1.27.2+tmplazy for lazy_static-1
Aug 02 09:37:10.709 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 09:37:10.709 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 09:37:10.710 INFO running `"docker" "create" "-v" "/tmp/crater.ndymlARlJJKa:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-0/1.27.2+tmplazy:/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" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Aug 02 09:37:10.956 INFO blam! 7a932869aae2e1e4bb93adee4dc33851df67f16d134cce0a762fc5c5dfba534c
Aug 02 09:37:10.957 INFO running `"docker" "start" "-a" "7a932869aae2e1e4bb93adee4dc33851df67f16d134cce0a762fc5c5dfba534c"`
Aug 02 09:37:12.220 INFO kablam!     Checking futures v0.1.23 (file:///source)
Aug 02 09:37:22.790 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 09:37:22.790 INFO kablam!  --> benches/poll.rs:1:1
Aug 02 09:37:22.790 INFO kablam!   |
Aug 02 09:37:22.790 INFO kablam! 1 | #![feature(test)]
Aug 02 09:37:22.790 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 09:37:22.790 INFO kablam! 
Aug 02 09:37:22.795 INFO kablam! error: aborting due to previous error
Aug 02 09:37:22.796 INFO kablam! 
Aug 02 09:37:22.801 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 09:37:22.829 INFO kablam! error: Could not compile `futures`.
Aug 02 09:37:22.830 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 09:37:23.283 INFO kablam! warning: unnecessary parentheses around function argument
Aug 02 09:37:23.283 INFO kablam!   --> tests/bilock.rs:62:38
Aug 02 09:37:23.283 INFO kablam!    |
Aug 02 09:37:23.284 INFO kablam! 62 |     let b = stream::iter_ok::<_, ()>((0..N)).fold(b, |b, _n| {
Aug 02 09:37:23.284 INFO kablam!    |                                      ^^^^^^ help: remove these parentheses
Aug 02 09:37:23.289 INFO kablam!    |
Aug 02 09:37:23.290 INFO kablam!    = note: #[warn(unused_parens)] on by default
Aug 02 09:37:23.290 INFO kablam! 
Aug 02 09:37:25.427 INFO kablam! error: build failed
Aug 02 09:37:25.431 INFO kablam! su: No module specific data is present
Aug 02 09:37:26.754 INFO running `"docker" "rm" "-f" "7a932869aae2e1e4bb93adee4dc33851df67f16d134cce0a762fc5c5dfba534c"`
Aug 02 09:37:26.892 INFO blam! 7a932869aae2e1e4bb93adee4dc33851df67f16d134cce0a762fc5c5dfba534c