From ca8e7767739a144cc5a960df990915efa58d9ca7 Mon Sep 17 00:00:00 2001
From: Preston Evans <preston.b.evans@gmail.com>
Date: Thu, 25 Apr 2024 08:52:52 -0500
Subject: [PATCH] Fix warnings

---
 src/lib.rs             | 4 ++--
 src/tendermint_hash.rs | 6 ++++++
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index bde298a..3810495 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -22,7 +22,7 @@ mod maybestd {
     #[cfg(not(feature = "std"))]
     pub use core::{cmp, fmt, hash, marker, mem, ops};
     #[cfg(feature = "std")]
-    pub use std::{boxed, cmp, collections, fmt, format, hash, marker, mem, ops, string, vec};
+    pub use std::{boxed, cmp, fmt, hash, marker, mem, ops, vec};
 
     pub mod hash_or_btree_map {
         #[cfg(not(feature = "std"))]
@@ -417,7 +417,7 @@ pub enum RangeProofType {
 
 #[cfg(test)]
 mod tests {
-    use crate::maybestd::{format, vec::Vec};
+    use crate::maybestd::vec::Vec;
     use crate::NamespaceMerkleHasher;
     use crate::{
         namespaced_hash::{NamespaceId, NamespacedSha2Hasher},
diff --git a/src/tendermint_hash.rs b/src/tendermint_hash.rs
index 46f3461..0e877b1 100644
--- a/src/tendermint_hash.rs
+++ b/src/tendermint_hash.rs
@@ -24,6 +24,12 @@ fn inner_hash(left: &[u8], right: &[u8]) -> [u8; 32] {
 /// A sha256 hasher, compatible with [Tendermint merkle hash](https://github.com/informalsystems/tendermint-rs/blob/979456c9f33463944f97f7ea3900640e59f7ea6d/tendermint/src/merkle.rs)
 pub struct TmSha2Hasher;
 
+impl Default for TmSha2Hasher {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl TmSha2Hasher {
     /// Create a new instance of the hasher
     pub fn new() -> Self {