diff --git a/gossip/src/contact_info.rs b/gossip/src/contact_info.rs
index def95ed391a53c..e3e51f59f5136c 100644
--- a/gossip/src/contact_info.rs
+++ b/gossip/src/contact_info.rs
@@ -527,9 +527,7 @@ fn sanitize_entries(addrs: &[IpAddr], sockets: &[SocketEntry]) -> Result<(), Err
     // Verify that port offsets don't overflow.
     if sockets
         .iter()
-        .fold(Some(0u16), |offset, entry| {
-            offset?.checked_add(entry.offset)
-        })
+        .try_fold(0u16, |offset, entry| offset.checked_add(entry.offset))
         .is_none()
     {
         return Err(Error::PortOffsetsOverflow);
diff --git a/ledger-tool/src/program.rs b/ledger-tool/src/program.rs
index 57f977b5fa7f48..95b5792d356bf0 100644
--- a/ledger-tool/src/program.rs
+++ b/ledger-tool/src/program.rs
@@ -177,7 +177,7 @@ impl ProgramSubCommand for App<'_, '_> {
                 .arg(
                     Arg::with_name("input")
                         .help(
-                            r##"Input for the program to run on, where FILE is a name of a JSON file
+                            r#"Input for the program to run on, where FILE is a name of a JSON file
 with input data, or BYTES is the number of 0-valued bytes to allocate for program parameters"
 
 The input data for a program execution have to be in JSON format
@@ -196,7 +196,7 @@ and the following fields are required
     ],
     "instruction_data": [31, 32, 23, 24]
 }
-"##,
+"#,
                         )
                         .short("i")
                         .long("input")
diff --git a/merkle-tree/src/merkle_tree.rs b/merkle-tree/src/merkle_tree.rs
index d08e111d4ef93e..09285a41e7af1f 100644
--- a/merkle-tree/src/merkle_tree.rs
+++ b/merkle-tree/src/merkle_tree.rs
@@ -58,7 +58,7 @@ impl<'a> Proof<'a> {
                 None
             }
         });
-        matches!(result, Some(_))
+        result.is_some()
     }
 }