Sep 10 07:31:33.943 INFO checking trie-0.2.0 against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 07:31:33.943 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 07:31:33.943 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-3/try#3a2610c2a16575649896925631bf8cec4f4b1961:/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=1000" "-e" "CMD=cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 07:31:34.186 INFO blam! 1dfc1de8cd570e398db7e63122cd1ebaa28b6ae5a5383d6163e2cdc21c3ce43b
Sep 10 07:31:34.188 INFO running `"docker" "start" "-a" "1dfc1de8cd570e398db7e63122cd1ebaa28b6ae5a5383d6163e2cdc21c3ce43b"`
Sep 10 07:31:34.984 INFO kablam! usermod: no changes
Sep 10 07:31:35.058 INFO kablam!     Checking bit-set v0.5.0
Sep 10 07:31:35.684 INFO kablam!     Checking ordered_iter v0.1.1
Sep 10 07:31:36.272 INFO kablam!     Checking trie v0.2.0 (file:///source)
Sep 10 07:31:38.363 INFO kablam! error[E0635]: unknown feature `step_by`
Sep 10 07:31:38.363 INFO kablam!   --> src/lib.rs:13:38
Sep 10 07:31:38.363 INFO kablam!    |
Sep 10 07:31:38.363 INFO kablam! 13 | #![cfg_attr(test, feature(fn_traits, step_by, test, unboxed_closures))]
Sep 10 07:31:38.363 INFO kablam!    |                                      ^^^^^^^
Sep 10 07:31:38.363 INFO kablam! 
Sep 10 07:31:38.412 INFO kablam! error: aborting due to previous error
Sep 10 07:31:38.413 INFO kablam! 
Sep 10 07:31:38.413 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 10 07:31:38.423 INFO kablam! error: Could not compile `trie`.
Sep 10 07:31:38.423 INFO kablam! 
Sep 10 07:31:38.423 INFO kablam! To learn more, run the command again with --verbose.
Sep 10 07:31:38.425 INFO kablam! su: No module specific data is present
Sep 10 07:31:40.025 INFO running `"docker" "rm" "-f" "1dfc1de8cd570e398db7e63122cd1ebaa28b6ae5a5383d6163e2cdc21c3ce43b"`
Sep 10 07:31:40.144 INFO blam! 1dfc1de8cd570e398db7e63122cd1ebaa28b6ae5a5383d6163e2cdc21c3ce43b