Aug 10 23:31:55.448 INFO checking trie-0.2.0 against master#f6d43ed84207c7e58f363f46e5a438ff40f2b311 for libc-1
Aug 10 23:31:55.448 INFO running: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 10 23:31:55.448 INFO creating container for: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 10 23:31:55.448 INFO running `"docker" "create" "-v" "/tmp/crater.fnlkyZdQwbWJ:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/libc-1/worker-7/master#f6d43ed84207c7e58f363f46e5a438ff40f2b311:/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 +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "crater"`
Aug 10 23:31:55.739 INFO blam! 43484f4d40001d6e548a10aedaca8f77fdace0c5a3c056091d1882cc8f8615af
Aug 10 23:31:55.741 INFO running `"docker" "start" "-a" "43484f4d40001d6e548a10aedaca8f77fdace0c5a3c056091d1882cc8f8615af"`
Aug 10 23:31:56.962 INFO kablam!     Checking bit-set v0.5.0
Aug 10 23:31:57.640 INFO kablam!     Checking ordered_iter v0.1.1
Aug 10 23:31:58.110 INFO kablam!     Checking trie v0.2.0 (file:///source)
Aug 10 23:32:00.585 INFO kablam! error[E0635]: unknown feature `step_by`
Aug 10 23:32:00.585 INFO kablam!   --> src/lib.rs:13:38
Aug 10 23:32:00.585 INFO kablam!    |
Aug 10 23:32:00.585 INFO kablam! 13 | #![cfg_attr(test, feature(fn_traits, step_by, test, unboxed_closures))]
Aug 10 23:32:00.585 INFO kablam!    |                                      ^^^^^^^
Aug 10 23:32:00.585 INFO kablam! 
Aug 10 23:32:00.691 INFO kablam! error: aborting due to previous error
Aug 10 23:32:00.691 INFO kablam! 
Aug 10 23:32:00.691 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 10 23:32:00.703 INFO kablam! error: Could not compile `trie`.
Aug 10 23:32:00.703 INFO kablam! 
Aug 10 23:32:00.703 INFO kablam! To learn more, run the command again with --verbose.
Aug 10 23:32:00.704 INFO kablam! su: No module specific data is present
Aug 10 23:32:01.331 INFO running `"docker" "rm" "-f" "43484f4d40001d6e548a10aedaca8f77fdace0c5a3c056091d1882cc8f8615af"`
Aug 10 23:32:01.435 INFO blam! 43484f4d40001d6e548a10aedaca8f77fdace0c5a3c056091d1882cc8f8615af