Aug 31 10:35:14.185 INFO checking trie-0.2.0 against master#d0d81b7fc1421859ba0218e8a437af29ae3b0967 for pr-53578
Aug 31 10:35:14.185 INFO running: cargo +d0d81b7fc1421859ba0218e8a437af29ae3b0967-alt check --frozen --all --all-targets
Aug 31 10:35:14.185 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53578/master#d0d81b7fc1421859ba0218e8a437af29ae3b0967:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-1/master#d0d81b7fc1421859ba0218e8a437af29ae3b0967:/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 +d0d81b7fc1421859ba0218e8a437af29ae3b0967-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 31 10:35:14.373 INFO blam! 5d7f2efe5f2f58b9f6dc3e5e9c7d1cbaeb244e03c00c0a418e38f2be14f1b4bb
Aug 31 10:35:14.375 INFO running `"docker" "start" "-a" "5d7f2efe5f2f58b9f6dc3e5e9c7d1cbaeb244e03c00c0a418e38f2be14f1b4bb"`
Aug 31 10:35:15.174 INFO kablam!     Checking bit-set v0.5.0
Aug 31 10:35:15.833 INFO kablam!     Checking ordered_iter v0.1.1
Aug 31 10:35:16.328 INFO kablam!     Checking trie v0.2.0 (file:///source)
Aug 31 10:35:18.264 INFO kablam! error[E0635]: unknown feature `step_by`
Aug 31 10:35:18.264 INFO kablam!   --> src/lib.rs:13:38
Aug 31 10:35:18.264 INFO kablam!    |
Aug 31 10:35:18.264 INFO kablam! 13 | #![cfg_attr(test, feature(fn_traits, step_by, test, unboxed_closures))]
Aug 31 10:35:18.264 INFO kablam!    |                                      ^^^^^^^
Aug 31 10:35:18.264 INFO kablam! 
Aug 31 10:35:18.309 INFO kablam! error: aborting due to previous error
Aug 31 10:35:18.310 INFO kablam! 
Aug 31 10:35:18.310 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 31 10:35:18.318 INFO kablam! error: Could not compile `trie`.
Aug 31 10:35:18.318 INFO kablam! 
Aug 31 10:35:18.318 INFO kablam! To learn more, run the command again with --verbose.
Aug 31 10:35:18.319 INFO kablam! su: No module specific data is present
Aug 31 10:35:18.797 INFO running `"docker" "rm" "-f" "5d7f2efe5f2f58b9f6dc3e5e9c7d1cbaeb244e03c00c0a418e38f2be14f1b4bb"`
Aug 31 10:35:18.884 INFO blam! 5d7f2efe5f2f58b9f6dc3e5e9c7d1cbaeb244e03c00c0a418e38f2be14f1b4bb