Rollup merge of rust-lang#28186 - thomas07vt:thomas07vt-patch-trpl-rust-inside-other-languages.md, r=steveklabnik

The embed rust file that we compile prints out 'Thread finished..' messages along with a 'done!' r? @steveklabnik

Author: Manishearth

src/doc/trpl/rust-inside-other-languages.md

@@ -217,6 +217,17 @@ And finally, we can try running it:
 
 ```bash
 $ ruby embed.rb
+Thread finished with count=5000000
+Thread finished with count=5000000
+Thread finished with count=5000000
+Thread finished with count=5000000
+Thread finished with count=5000000
+Thread finished with count=5000000
+Thread finished with count=5000000
+Thread finished with count=5000000
+Thread finished with count=5000000
+Thread finished with count=5000000
+done!
 done!
 $
 ```