Remove unneeded `fn main` blocks from docs

2 files changed, 6 insertions, 13 deletions

diff --git a/src/libstd/collections/hash/map.rs b/src/libstd/collections/hash/map.rs
index 69abbde9e6e..ff50051ef50 100644
--- a/src/libstd/collections/hash/map.rs
+++ b/src/libstd/collections/hash/map.rs
@@ -192,14 +192,9 @@ use crate::sys;
 /// ```
 /// use std::collections::HashMap;
 ///
-/// fn main() {
-///     let timber_resources: HashMap<&str, i32> =
-///     [("Norway", 100),
-///      ("Denmark", 50),
-///      ("Iceland", 10)]
-///      .iter().cloned().collect();
-///     // use the values stored in map
-/// }
+/// let timber_resources: HashMap<&str, i32> = [("Norway", 100), ("Denmark", 50), ("Iceland", 10)]
+///     .iter().cloned().collect();
+/// // use the values stored in map
 /// ```
 
 #[derive(Clone)]
diff --git a/src/libstd/collections/hash/set.rs b/src/libstd/collections/hash/set.rs
index 26db651ef89..092fb443468 100644
--- a/src/libstd/collections/hash/set.rs
+++ b/src/libstd/collections/hash/set.rs
@@ -93,11 +93,9 @@ use super::map::{self, HashMap, Keys, RandomState};
 /// ```
 /// use std::collections::HashSet;
 ///
-/// fn main() {
-///     let viking_names: HashSet<&'static str> =
-///         [ "Einar", "Olaf", "Harald" ].iter().cloned().collect();
-///     // use the values stored in the set
-/// }
+/// let viking_names: HashSet<&'static str> =
+///     [ "Einar", "Olaf", "Harald" ].iter().cloned().collect();
+/// // use the values stored in the set
 /// ```
 ///
 /// [`Cell`]: ../../std/cell/struct.Cell.html