Aug 02 06:22:25.912 INFO checking jam-0.0.1 against 1.27.2+tmplazy for lazy_static-1
Aug 02 06:22:25.912 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 06:22:25.912 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 06:22:25.912 INFO running `"docker" "create" "-v" "/tmp/crater.jNSYuwMfSq5G:/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 06:22:26.188 INFO blam! 120c862ffc57abc53fbba09fd30b7d61772aa09ac6161359db5cdea7389a5a03
Aug 02 06:22:26.194 INFO running `"docker" "start" "-a" "120c862ffc57abc53fbba09fd30b7d61772aa09ac6161359db5cdea7389a5a03"`
Aug 02 06:22:27.384 INFO kablam!    Compiling jam_derive v0.0.1
Aug 02 06:22:28.850 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 06:22:28.850 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/jam_derive-0.0.1/src/lib.rs:34:1
Aug 02 06:22:28.850 INFO kablam!    |
Aug 02 06:22:28.850 INFO kablam! 34 | #![feature(proc_macro, proc_macro_lib)]
Aug 02 06:22:28.850 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 06:22:28.851 INFO kablam! 
Aug 02 06:22:28.851 INFO kablam! error: aborting due to previous error
Aug 02 06:22:28.851 INFO kablam! 
Aug 02 06:22:28.851 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 06:22:28.863 INFO kablam! error: Could not compile `jam_derive`.
Aug 02 06:22:28.864 INFO kablam! 
Aug 02 06:22:28.864 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 06:22:28.865 INFO kablam! su: No module specific data is present
Aug 02 06:22:29.711 INFO running `"docker" "rm" "-f" "120c862ffc57abc53fbba09fd30b7d61772aa09ac6161359db5cdea7389a5a03"`
Aug 02 06:22:29.865 INFO blam! 120c862ffc57abc53fbba09fd30b7d61772aa09ac6161359db5cdea7389a5a03