Forbid privacy in inner functions

Closes #10111

1 files changed, 2 insertions, 0 deletions

diff --git a/doc/tutorial-container.md b/doc/tutorial-container.md
index bd0510c4fb3..65f536fa9f2 100644
--- a/doc/tutorial-container.md
+++ b/doc/tutorial-container.md
@@ -87,6 +87,7 @@ Reaching the end of the iterator is signalled by returning `None` instead of
 `Some(item)`:
 
 ~~~
+# fn main() {}
 /// A stream of N zeroes
 struct ZeroStream {
     priv remaining: uint
@@ -301,6 +302,7 @@ the iterator can provide better information.
 The `ZeroStream` from earlier can provide an exact lower and upper bound:
 
 ~~~
+# fn main() {}
 /// A stream of N zeroes
 struct ZeroStream {
     priv remaining: uint