Update num-rug-adapter to fix build with num feature.

src/main.rs

@@ -21,7 +21,10 @@ extern crate prolog_parser;
 extern crate ref_thread_local;
 extern crate ring;
 extern crate ripemd160;
+#[cfg(feature = "rug")]
 extern crate rug;
+#[cfg(feature = "num-rug-adapter")]
+extern crate num_rug_adapter as rug;
 extern crate rustyline;
 extern crate sha3;
 extern crate unicode_reader;

src/mod.rs

@@ -1,27 +0,0 @@
-extern crate dirs;
-extern crate ordered_float;
-extern crate prolog_parser;
-#[cfg(feature = "rug")]
-extern crate rug;
-#[cfg(feature = "num-rug-adapter")]
-extern crate num_rug_adapter as rug;
-
-#[macro_use]
-mod macros;
-mod clause_types;
-pub mod instructions;
-#[macro_use]
-mod allocator;
-mod arithmetic;
-mod codegen;
-mod debray_allocator;
-mod fixtures;
-mod forms;
-mod heap_iter;
-pub mod heap_print;
-mod indexing;
-mod iterators;
-pub mod machine;
-pub mod read;
-mod targets;
-pub mod write;