From 9d9773bd2a55ebd1fe2f6b8f05ba2d6c3e623d0a Mon Sep 17 00:00:00 2001
From: Michael Vines <mvines@gmail.com>
Date: Sun, 22 May 2022 19:10:48 -0700
Subject: [PATCH] Use write! instead of format! to pacify clippy

---
 ledger-tool/src/main.rs  |  3 ++-
 ledger/src/blockstore.rs | 17 ++++++++++++-----
 2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/ledger-tool/src/main.rs b/ledger-tool/src/main.rs
index 5e1a8c35b..5f730016d 100644
--- a/ledger-tool/src/main.rs
+++ b/ledger-tool/src/main.rs
@@ -3011,7 +3011,8 @@ fn main() {
                                         if detail.skipped_reasons.is_empty() {
                                             detail.skipped_reasons = format!("{:?}", skipped_reason);
                                         } else {
-                                            detail.skipped_reasons += &format!("/{:?}", skipped_reason);
+                                            use std::fmt::Write;
+                                            let _ = write!(&mut detail.skipped_reasons, "/{:?}", skipped_reason);
                                         }
                                     }
                                 }
diff --git a/ledger/src/blockstore.rs b/ledger/src/blockstore.rs
index 756e4ca2e..d175ef9a8 100644
--- a/ledger/src/blockstore.rs
+++ b/ledger/src/blockstore.rs
@@ -51,6 +51,7 @@ use {
         cmp,
         collections::{hash_map::Entry as HashMapEntry, BTreeSet, HashMap, HashSet},
         convert::TryInto,
+        fmt::Write,
         fs,
         io::{Error as IoError, ErrorKind},
         path::{Path, PathBuf},
@@ -3869,27 +3870,33 @@ pub fn create_new_ledger(
                 ledger_path.join(format!("{}.failed", DEFAULT_GENESIS_ARCHIVE)),
             )
             .unwrap_or_else(|e| {
-                error_messages += &format!(
+                let _ = write!(
+                    &mut error_messages,
                     "/failed to stash problematic {}: {}",
                     DEFAULT_GENESIS_ARCHIVE, e
-                )
+                );
             });
             fs::rename(
                 &ledger_path.join(DEFAULT_GENESIS_FILE),
                 ledger_path.join(format!("{}.failed", DEFAULT_GENESIS_FILE)),
             )
             .unwrap_or_else(|e| {
-                error_messages += &format!(
+                let _ = write!(
+                    &mut error_messages,
                     "/failed to stash problematic {}: {}",
                     DEFAULT_GENESIS_FILE, e
-                )
+                );
             });
             fs::rename(
                 &ledger_path.join(blockstore_dir),
                 ledger_path.join(format!("{}.failed", blockstore_dir)),
             )
             .unwrap_or_else(|e| {
-                error_messages += &format!("/failed to stash problematic {}: {}", blockstore_dir, e)
+                let _ = write!(
+                    &mut error_messages,
+                    "/failed to stash problematic {}: {}",
+                    blockstore_dir, e
+                );
             });
 
             return Err(BlockstoreError::Io(IoError::new(