Aug 01 23:02:48.112 INFO checking sam-0.2.0 against 1.27.2+tmplazy for lazy_static-1
Aug 01 23:02:48.112 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 23:02:48.112 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 23:02:48.112 INFO running `"docker" "create" "-v" "/tmp/crater.cyphlrosZVAD:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-3/1.27.2+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 01 23:02:48.428 INFO blam! 67adeff118db1178dc402253e1bf0aac6ff3b6ec73dd12861eaad3589b25f723
Aug 01 23:02:48.430 INFO running `"docker" "start" "-a" "67adeff118db1178dc402253e1bf0aac6ff3b6ec73dd12861eaad3589b25f723"`
Aug 01 23:02:49.789 INFO kablam!     Checking sam v0.2.0 (file:///source)
Aug 01 23:02:51.107 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:02:51.107 INFO kablam!  --> tests/tests.rs:1:1
Aug 01 23:02:51.107 INFO kablam!   |
Aug 01 23:02:51.107 INFO kablam! 1 | #![feature(test)]
Aug 01 23:02:51.107 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 23:02:51.107 INFO kablam! 
Aug 01 23:02:51.107 INFO kablam! error: aborting due to previous error
Aug 01 23:02:51.107 INFO kablam! 
Aug 01 23:02:51.107 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 23:02:51.114 INFO kablam! error: Could not compile `sam`.
Aug 01 23:02:51.114 INFO kablam! 
Aug 01 23:02:51.114 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 23:02:51.123 INFO kablam! su: No module specific data is present
Aug 01 23:02:52.030 INFO running `"docker" "rm" "-f" "67adeff118db1178dc402253e1bf0aac6ff3b6ec73dd12861eaad3589b25f723"`
Aug 01 23:02:52.193 INFO blam! 67adeff118db1178dc402253e1bf0aac6ff3b6ec73dd12861eaad3589b25f723