Aug 02 01:34:42.327 INFO checking quadrature-0.1.2 against 1.27.2 for lazy_static-1
Aug 02 01:34:42.327 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 01:34:42.327 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 01:34:42.327 INFO running `"docker" "create" "-v" "/tmp/crater.5ANKPxLmJvex:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2:/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 01:34:42.534 INFO blam! e73a9d5a948e56e67f9c095cdbee7204164e662c77a96a8eab212d0974c43bec
Aug 02 01:34:42.537 INFO running `"docker" "start" "-a" "e73a9d5a948e56e67f9c095cdbee7204164e662c77a96a8eab212d0974c43bec"`
Aug 02 01:34:43.518 INFO kablam!     Checking quadrature v0.1.2 (file:///source)
Aug 02 01:34:45.129 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 01:34:45.129 INFO kablam!  --> benches/bench.rs:1:1
Aug 02 01:34:45.129 INFO kablam!   |
Aug 02 01:34:45.129 INFO kablam! 1 | #![feature(test)]
Aug 02 01:34:45.129 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 01:34:45.129 INFO kablam! 
Aug 02 01:34:45.134 INFO kablam! error: aborting due to previous error
Aug 02 01:34:45.134 INFO kablam! 
Aug 02 01:34:45.134 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 01:34:45.148 INFO kablam! error: Could not compile `quadrature`.
Aug 02 01:34:45.148 INFO kablam! 
Aug 02 01:34:45.148 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 01:34:45.150 INFO kablam! su: No module specific data is present
Aug 02 01:34:45.830 INFO running `"docker" "rm" "-f" "e73a9d5a948e56e67f9c095cdbee7204164e662c77a96a8eab212d0974c43bec"`
Aug 02 01:34:46.003 INFO blam! e73a9d5a948e56e67f9c095cdbee7204164e662c77a96a8eab212d0974c43bec