Sep 14 07:20:54.009 INFO checking tt-num-0.1.0 against try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0 for pr-53578-1
Sep 14 07:20:54.009 INFO running: cargo +87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0-alt check --frozen --all --all-targets
Sep 14 07:20:54.010 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-53578-1/try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578-1/worker-4/try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0:/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 +87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 14 07:20:54.403 INFO blam! 5ac1d425ec2fa710d7df6cd7a9ce37f2438f96f59c6c7823552fb22cfb951db3
Sep 14 07:20:54.405 INFO running `"docker" "start" "-a" "5ac1d425ec2fa710d7df6cd7a9ce37f2438f96f59c6c7823552fb22cfb951db3"`
Sep 14 07:20:55.923 INFO kablam! usermod: no changes
Sep 14 07:20:56.021 INFO kablam!     Checking tt-call v1.0.2
Sep 14 07:20:56.367 INFO kablam!     Checking tt-num v0.1.0 (file:///source)
Sep 14 07:20:57.089 INFO kablam! error[E0658]: access to extern crates through prelude is experimental (see issue #44660)
Sep 14 07:20:57.089 INFO kablam!  --> <tt_atoi macros>:2:1
Sep 14 07:20:57.089 INFO kablam!   |
Sep 14 07:20:57.089 INFO kablam! 2 | tt_call :: tt_return ! { $ caller input = [ { $ ( $ a ) * } ] } } ; {
Sep 14 07:20:57.089 INFO kablam!   | ^^^^^^^
Sep 14 07:20:57.089 INFO kablam!   |
Sep 14 07:20:57.089 INFO kablam!   = help: add #![feature(extern_prelude)] to the crate attributes to enable
Sep 14 07:20:57.089 INFO kablam! 
Sep 14 07:20:57.191 INFO kablam! error: aborting due to previous error
Sep 14 07:20:57.191 INFO kablam! 
Sep 14 07:20:57.191 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 14 07:20:57.198 INFO kablam! error: Could not compile `tt-num`.
Sep 14 07:20:57.198 INFO kablam! 
Sep 14 07:20:57.198 INFO kablam! To learn more, run the command again with --verbose.
Sep 14 07:20:57.200 INFO kablam! su: No module specific data is present
Sep 14 07:20:58.421 INFO running `"docker" "rm" "-f" "5ac1d425ec2fa710d7df6cd7a9ce37f2438f96f59c6c7823552fb22cfb951db3"`
Sep 14 07:20:58.689 INFO blam! 5ac1d425ec2fa710d7df6cd7a9ce37f2438f96f59c6c7823552fb22cfb951db3