Aug 01 22:23:50.034 INFO checking sha2-asm-0.5.1 against 1.27.2+tmplazy for lazy_static-1
Aug 01 22:23:50.034 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 22:23:50.034 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 22:23:50.034 INFO running `"docker" "create" "-v" "/tmp/crater.i4EhGBS5w3La:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-4/1.27.2+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 22:23:50.334 INFO blam! 3517a6ab028c929d4a69fafea6beae532e6cdee1a4b19bfdd437d47d3d193d63
Aug 01 22:23:50.336 INFO running `"docker" "start" "-a" "3517a6ab028c929d4a69fafea6beae532e6cdee1a4b19bfdd437d47d3d193d63"`
Aug 01 22:23:51.390 INFO kablam!    Compiling sha2-asm v0.5.1 (file:///source)
Aug 01 22:23:53.895 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 22:23:53.895 INFO kablam!  --> benches/lib.rs:2:1
Aug 01 22:23:53.895 INFO kablam!   |
Aug 01 22:23:53.895 INFO kablam! 2 | #![feature(test)]
Aug 01 22:23:53.895 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 22:23:53.895 INFO kablam! 
Aug 01 22:23:53.896 INFO kablam! error: aborting due to previous error
Aug 01 22:23:53.896 INFO kablam! 
Aug 01 22:23:53.896 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 22:23:53.902 INFO kablam! error: Could not compile `sha2-asm`.
Aug 01 22:23:53.902 INFO kablam! 
Aug 01 22:23:53.902 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 22:23:53.903 INFO kablam! su: No module specific data is present
Aug 01 22:23:54.503 INFO running `"docker" "rm" "-f" "3517a6ab028c929d4a69fafea6beae532e6cdee1a4b19bfdd437d47d3d193d63"`
Aug 01 22:23:54.665 INFO blam! 3517a6ab028c929d4a69fafea6beae532e6cdee1a4b19bfdd437d47d3d193d63