Sep 21 01:28:44.876 INFO checking tt-num-0.1.0 against try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6 for pr-54394
Sep 21 01:28:44.876 INFO running: cargo +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets
Sep 21 01:28:44.876 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54394/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-0/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/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 +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 01:28:45.138 INFO blam! d5843c42c150a05717f424e211bda7021bd954d0d3950f0670e48787498074b1
Sep 21 01:28:45.140 INFO running `"docker" "start" "-a" "d5843c42c150a05717f424e211bda7021bd954d0d3950f0670e48787498074b1"`
Sep 21 01:28:46.410 INFO kablam! usermod: no changes
Sep 21 01:28:46.478 INFO kablam!     Checking tt-call v1.0.4
Sep 21 01:28:46.782 INFO kablam!     Checking tt-num v0.1.0 (/source)
Sep 21 01:28:47.366 INFO kablam! error[E0658]: access to extern crates through prelude is experimental (see issue #44660)
Sep 21 01:28:47.366 INFO kablam!  --> <tt_atoi macros>:2:1
Sep 21 01:28:47.367 INFO kablam!   |
Sep 21 01:28:47.367 INFO kablam! 2 | tt_call :: tt_return ! { $ caller input = [ { $ ( $ a ) * } ] } } ; {
Sep 21 01:28:47.368 INFO kablam!   | ^^^^^^^
Sep 21 01:28:47.368 INFO kablam!   |
Sep 21 01:28:47.368 INFO kablam!   = help: add #![feature(extern_prelude)] to the crate attributes to enable
Sep 21 01:28:47.368 INFO kablam! 
Sep 21 01:28:47.458 INFO kablam! error: aborting due to previous error
Sep 21 01:28:47.458 INFO kablam! 
Sep 21 01:28:47.458 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 21 01:28:47.478 INFO kablam! error: Could not compile `tt-num`.
Sep 21 01:28:47.478 INFO kablam! 
Sep 21 01:28:47.478 INFO kablam! To learn more, run the command again with --verbose.
Sep 21 01:28:47.479 INFO kablam! su: No module specific data is present
Sep 21 01:28:49.633 INFO running `"docker" "rm" "-f" "d5843c42c150a05717f424e211bda7021bd954d0d3950f0670e48787498074b1"`
Sep 21 01:28:49.747 INFO blam! d5843c42c150a05717f424e211bda7021bd954d0d3950f0670e48787498074b1