Aug 17 07:54:54.547 INFO checking trie-0.2.0 against master#142bb27373126edf8367f526358b6c72ecf1d8df for pr-53426
Aug 17 07:54:54.547 INFO running: cargo +142bb27373126edf8367f526358b6c72ecf1d8df-alt check --frozen --all --all-targets
Aug 17 07:54:54.547 INFO creating container for: cargo +142bb27373126edf8367f526358b6c72ecf1d8df-alt check --frozen --all --all-targets
Aug 17 07:54:54.547 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53426/master#142bb27373126edf8367f526358b6c72ecf1d8df:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53426/worker-3/master#142bb27373126edf8367f526358b6c72ecf1d8df:/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" "-e" "USER_ID=500" "-e" "CMD=cargo +142bb27373126edf8367f526358b6c72ecf1d8df-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "crater"`
Aug 17 07:54:54.774 INFO blam! ab087b3b47b3c14b15c22e96fad400b231f5221b3355b2ad79847828a9d73af4
Aug 17 07:54:54.777 INFO running `"docker" "start" "-a" "ab087b3b47b3c14b15c22e96fad400b231f5221b3355b2ad79847828a9d73af4"`
Aug 17 07:54:55.586 INFO kablam!     Checking trie v0.2.0 (file:///source)
Aug 17 07:54:58.635 INFO kablam! error[E0635]: unknown feature `step_by`
Aug 17 07:54:58.635 INFO kablam!   --> src/lib.rs:13:38
Aug 17 07:54:58.635 INFO kablam!    |
Aug 17 07:54:58.635 INFO kablam! 13 | #![cfg_attr(test, feature(fn_traits, step_by, test, unboxed_closures))]
Aug 17 07:54:58.635 INFO kablam!    |                                      ^^^^^^^
Aug 17 07:54:58.635 INFO kablam! 
Aug 17 07:54:58.722 INFO kablam! error: aborting due to previous error
Aug 17 07:54:58.722 INFO kablam! 
Aug 17 07:54:58.722 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 17 07:54:58.733 INFO kablam! error: Could not compile `trie`.
Aug 17 07:54:58.733 INFO kablam! 
Aug 17 07:54:58.733 INFO kablam! To learn more, run the command again with --verbose.
Aug 17 07:54:58.735 INFO kablam! su: No module specific data is present
Aug 17 07:54:59.298 INFO running `"docker" "rm" "-f" "ab087b3b47b3c14b15c22e96fad400b231f5221b3355b2ad79847828a9d73af4"`
Aug 17 07:54:59.530 INFO blam! ab087b3b47b3c14b15c22e96fad400b231f5221b3355b2ad79847828a9d73af4