Aug 02 10:04:13.105 INFO checking fixedbitset-0.1.9 against 1.27.2+tmplazy for lazy_static-1
Aug 02 10:04:13.105 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 10:04:13.105 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 10:04:13.105 INFO running `"docker" "create" "-v" "/tmp/crater.7auX0zoxzjOa:/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 10:04:13.299 INFO blam! 27fae82eab94fd8b7e3ecee407eed11dae119ccc27b29a98617564e4fed09671
Aug 02 10:04:13.301 INFO running `"docker" "start" "-a" "27fae82eab94fd8b7e3ecee407eed11dae119ccc27b29a98617564e4fed09671"`
Aug 02 10:04:14.618 INFO kablam!     Checking fixedbitset v0.1.9 (file:///source)
Aug 02 10:04:16.743 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 10:04:16.743 INFO kablam!  --> benches/benches.rs:1:1
Aug 02 10:04:16.743 INFO kablam!   |
Aug 02 10:04:16.743 INFO kablam! 1 | #![feature(test)]
Aug 02 10:04:16.743 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 10:04:16.743 INFO kablam! 
Aug 02 10:04:16.744 INFO kablam! error: aborting due to previous error
Aug 02 10:04:16.744 INFO kablam! 
Aug 02 10:04:16.744 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 10:04:16.750 INFO kablam! error: Could not compile `fixedbitset`.
Aug 02 10:04:16.750 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 10:04:17.045 INFO kablam! error: build failed
Aug 02 10:04:17.046 INFO kablam! su: No module specific data is present
Aug 02 10:04:18.099 INFO running `"docker" "rm" "-f" "27fae82eab94fd8b7e3ecee407eed11dae119ccc27b29a98617564e4fed09671"`
Aug 02 10:04:18.254 INFO blam! 27fae82eab94fd8b7e3ecee407eed11dae119ccc27b29a98617564e4fed09671