Aug 10 23:31:54.815 INFO checking trie-0.2.0 against try#a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195+tmplazy for libc-1
Aug 10 23:31:54.815 INFO running: cargo +a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195-alt check --frozen --all --all-targets
Aug 10 23:31:54.815 INFO creating container for: cargo +a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195-alt check --frozen --all --all-targets
Aug 10 23:31:54.816 INFO running `"docker" "create" "-v" "/tmp/crater.JISyusgvD8JZ:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/libc-1/worker-2/try#a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195+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 +a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "crater"`
Aug 10 23:31:55.103 INFO blam! 02cf4d4572b38651dc22104ab0baee4b488243f83fb7952b56d7b2f162b27241
Aug 10 23:31:55.108 INFO running `"docker" "start" "-a" "02cf4d4572b38651dc22104ab0baee4b488243f83fb7952b56d7b2f162b27241"`
Aug 10 23:31:56.238 INFO kablam!     Checking bit-vec v0.5.0
Aug 10 23:31:56.872 INFO kablam!     Checking bit-set v0.5.0
Aug 10 23:31:57.574 INFO kablam!     Checking ordered_iter v0.1.1
Aug 10 23:31:58.089 INFO kablam!     Checking trie v0.2.0 (file:///source)
Aug 10 23:32:00.725 INFO kablam! error[E0635]: unknown feature `step_by`
Aug 10 23:32:00.725 INFO kablam!   --> src/lib.rs:13:38
Aug 10 23:32:00.725 INFO kablam!    |
Aug 10 23:32:00.725 INFO kablam! 13 | #![cfg_attr(test, feature(fn_traits, step_by, test, unboxed_closures))]
Aug 10 23:32:00.725 INFO kablam!    |                                      ^^^^^^^
Aug 10 23:32:00.725 INFO kablam! 
Aug 10 23:32:00.893 INFO kablam! error: aborting due to previous error
Aug 10 23:32:00.893 INFO kablam! 
Aug 10 23:32:00.893 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 10 23:32:00.902 INFO kablam! error: Could not compile `trie`.
Aug 10 23:32:00.902 INFO kablam! 
Aug 10 23:32:00.902 INFO kablam! To learn more, run the command again with --verbose.
Aug 10 23:32:00.903 INFO kablam! su: No module specific data is present
Aug 10 23:32:01.580 INFO running `"docker" "rm" "-f" "02cf4d4572b38651dc22104ab0baee4b488243f83fb7952b56d7b2f162b27241"`
Aug 10 23:32:01.768 INFO blam! 02cf4d4572b38651dc22104ab0baee4b488243f83fb7952b56d7b2f162b27241