Aug 01 20:03:15.877 INFO checking trie-0.2.0 against 1.27.2+tmplazy for lazy_static-1
Aug 01 20:03:15.877 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 20:03:15.877 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 20:03:15.877 INFO running `"docker" "create" "-v" "/tmp/crater.w9bVK5pTAonj:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2+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 20:03:16.094 INFO blam! 7921073576c0f2830ce09d7277c2501859456c52af0bf4ad673f9460fe5375af
Aug 01 20:03:16.096 INFO running `"docker" "start" "-a" "7921073576c0f2830ce09d7277c2501859456c52af0bf4ad673f9460fe5375af"`
Aug 01 20:03:17.057 INFO kablam!     Checking trie v0.2.0 (file:///source)
Aug 01 20:03:17.984 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 20:03:17.984 INFO kablam!   --> src/lib.rs:13:19
Aug 01 20:03:17.984 INFO kablam!    |
Aug 01 20:03:17.984 INFO kablam! 13 | #![cfg_attr(test, feature(fn_traits, step_by, test, unboxed_closures))]
Aug 01 20:03:17.984 INFO kablam!    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 20:03:17.984 INFO kablam! 
Aug 01 20:03:17.998 INFO kablam! error: aborting due to previous error
Aug 01 20:03:17.998 INFO kablam! 
Aug 01 20:03:17.998 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 20:03:18.006 INFO kablam! error: Could not compile `trie`.
Aug 01 20:03:18.007 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 20:03:18.574 INFO kablam! error: build failed
Aug 01 20:03:18.576 INFO kablam! su: No module specific data is present
Aug 01 20:03:19.285 INFO running `"docker" "rm" "-f" "7921073576c0f2830ce09d7277c2501859456c52af0bf4ad673f9460fe5375af"`
Aug 01 20:03:19.418 INFO blam! 7921073576c0f2830ce09d7277c2501859456c52af0bf4ad673f9460fe5375af