From 8eb9052c4c580b828371144b5a84a990268fe729 Mon Sep 17 00:00:00 2001
From: Joshua Nelson <jyn514@gmail.com>
Date: Sat, 14 Dec 2019 15:43:04 -0500
Subject: [PATCH] don't ignore DB cache if local cache is empty

greatly speeds up builds using --skip + docker-compose, for which the local
cache will _always_ be empty
---
 src/docbuilder/mod.rs | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/src/docbuilder/mod.rs b/src/docbuilder/mod.rs
index f07844b74..c6e5e8b7c 100644
--- a/src/docbuilder/mod.rs
+++ b/src/docbuilder/mod.rs
@@ -44,12 +44,10 @@ impl DocBuilder {
         let path = PathBuf::from(&self.options.prefix).join("cache");
         let reader = fs::File::open(path).map(|f| BufReader::new(f));
 
-        if reader.is_err() {
-            return Ok(());
-        }
-
-        for line in reader.unwrap().lines() {
-            self.cache.insert(line?);
+        if let Ok(reader) = reader {
+            for line in reader.lines() {
+                self.cache.insert(line?);
+            }
         }
 
         self.load_database_cache()?;