Aug 02 06:33:39.535 INFO checking iprange-0.4.1 against 1.27.2+tmplazy for lazy_static-1
Aug 02 06:33:39.535 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 06:33:39.535 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 06:33:39.535 INFO running `"docker" "create" "-v" "/tmp/crater.euLFaofvplYQ:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-6/1.27.2+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 06:33:39.813 INFO blam! 4d82d521644a5f2be8de2db922d9f68ec587f167c6b22344414d5763795ce859
Aug 02 06:33:39.814 INFO running `"docker" "start" "-a" "4d82d521644a5f2be8de2db922d9f68ec587f167c6b22344414d5763795ce859"`
Aug 02 06:33:40.743 INFO kablam!     Checking iprange v0.4.1 (file:///source)
Aug 02 06:33:42.615 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 06:33:42.615 INFO kablam!  --> benches/bench.rs:1:1
Aug 02 06:33:42.615 INFO kablam!   |
Aug 02 06:33:42.615 INFO kablam! 1 | #![feature(test)]
Aug 02 06:33:42.615 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 06:33:42.616 INFO kablam! 
Aug 02 06:33:42.616 INFO kablam! error: aborting due to previous error
Aug 02 06:33:42.617 INFO kablam! 
Aug 02 06:33:42.617 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 06:33:42.625 INFO kablam! error: Could not compile `iprange`.
Aug 02 06:33:42.625 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 06:33:43.580 INFO kablam! error: build failed
Aug 02 06:33:43.580 INFO kablam! su: No module specific data is present
Aug 02 06:33:44.058 INFO running `"docker" "rm" "-f" "4d82d521644a5f2be8de2db922d9f68ec587f167c6b22344414d5763795ce859"`
Aug 02 06:33:44.220 INFO blam! 4d82d521644a5f2be8de2db922d9f68ec587f167c6b22344414d5763795ce859