Merge pull request #578 from venkatagiri/cargo-test-fix

fix: incorrect host when running tests

Author: carols10cents

src/s3/lib.rs

@@ -99,7 +99,8 @@ impl Bucket {
     pub fn host(&self) -> String {
         format!("{}.s3{}.amazonaws.com", self.name,
                 match self.region {
-                    Some(ref r) => format!("-{}", r),
+                    Some(ref r) if r != "" => format!("-{}", r),
+                    Some(_) => String::new(),
                     None => String::new(),
                 })
     }