Sep 17 15:42:31.569 INFO checking tt-num-0.1.0 against master#cb6d2dfa8923902b0992a1522dc4a45a9d3ba690 for pr-54033
Sep 17 15:42:31.570 INFO running: cargo +cb6d2dfa8923902b0992a1522dc4a45a9d3ba690-alt check --frozen --all --all-targets
Sep 17 15:42:31.570 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-54033/master#cb6d2dfa8923902b0992a1522dc4a45a9d3ba690:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54033/worker-1/master#cb6d2dfa8923902b0992a1522dc4a45a9d3ba690:/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 +cb6d2dfa8923902b0992a1522dc4a45a9d3ba690-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 17 15:42:31.916 INFO blam! 0a15c3c43625ff304ec3e6d1a31682dca423bf69c36ec176b30bd05c83b622d3
Sep 17 15:42:31.919 INFO running `"docker" "start" "-a" "0a15c3c43625ff304ec3e6d1a31682dca423bf69c36ec176b30bd05c83b622d3"`
Sep 17 15:42:33.655 INFO kablam! usermod: no changes
Sep 17 15:42:33.736 INFO kablam!     Checking tt-call v1.0.3
Sep 17 15:42:34.067 INFO kablam!     Checking tt-num v0.1.0 (/source)
Sep 17 15:42:34.803 INFO kablam! error[E0658]: access to extern crates through prelude is experimental (see issue #44660)
Sep 17 15:42:34.803 INFO kablam!  --> <tt_atoi macros>:2:1
Sep 17 15:42:34.803 INFO kablam!   |
Sep 17 15:42:34.803 INFO kablam! 2 | tt_call :: tt_return ! { $ caller input = [ { $ ( $ a ) * } ] } } ; {
Sep 17 15:42:34.803 INFO kablam!   | ^^^^^^^
Sep 17 15:42:34.803 INFO kablam!   |
Sep 17 15:42:34.803 INFO kablam!   = help: add #![feature(extern_prelude)] to the crate attributes to enable
Sep 17 15:42:34.803 INFO kablam! 
Sep 17 15:42:34.895 INFO kablam! error: aborting due to previous error
Sep 17 15:42:34.895 INFO kablam! 
Sep 17 15:42:34.895 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 17 15:42:34.901 INFO kablam! error: Could not compile `tt-num`.
Sep 17 15:42:34.901 INFO kablam! 
Sep 17 15:42:34.901 INFO kablam! To learn more, run the command again with --verbose.
Sep 17 15:42:34.903 INFO kablam! su: No module specific data is present
Sep 17 15:42:35.889 INFO running `"docker" "rm" "-f" "0a15c3c43625ff304ec3e6d1a31682dca423bf69c36ec176b30bd05c83b622d3"`
Sep 17 15:42:36.199 INFO blam! 0a15c3c43625ff304ec3e6d1a31682dca423bf69c36ec176b30bd05c83b622d3