Aug 01 22:55:21.709 INFO checking scrapmetal-0.1.0 against 1.27.2 for lazy_static-1
Aug 01 22:55:21.709 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 22:55:21.709 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 22:55:21.709 INFO running `"docker" "create" "-v" "/tmp/crater.JwuTqiYcUUSn:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-0/1.27.2:/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 01 22:55:21.966 INFO blam! a08f17b331634e7d52b835e067f12222d57f81319786908c8e82447fbd389085
Aug 01 22:55:21.969 INFO running `"docker" "start" "-a" "a08f17b331634e7d52b835e067f12222d57f81319786908c8e82447fbd389085"`
Aug 01 22:55:22.860 INFO kablam!     Checking scrapmetal v0.1.0 (file:///source)
Aug 01 22:55:22.862 INFO kablam!    Compiling scrapmetal-derive v0.1.0
Aug 01 22:55:23.531 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 22:55:23.531 INFO kablam!  --> src/lib.rs:7:1
Aug 01 22:55:23.531 INFO kablam!   |
Aug 01 22:55:23.531 INFO kablam! 7 | #![feature(specialization)]
Aug 01 22:55:23.531 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 22:55:23.540 INFO kablam! 
Aug 01 22:55:23.544 INFO kablam! error: aborting due to previous error
Aug 01 22:55:23.544 INFO kablam! 
Aug 01 22:55:23.544 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 22:55:23.553 INFO kablam! error: Could not compile `scrapmetal`.
Aug 01 22:55:23.554 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 22:55:27.893 INFO kablam! error: build failed
Aug 01 22:55:27.896 INFO kablam! su: No module specific data is present
Aug 01 22:55:28.639 INFO running `"docker" "rm" "-f" "a08f17b331634e7d52b835e067f12222d57f81319786908c8e82447fbd389085"`
Aug 01 22:55:28.751 INFO blam! a08f17b331634e7d52b835e067f12222d57f81319786908c8e82447fbd389085