Address and suppress FindBugs warnings

apis/elasticstack/src/main/java/org/jclouds/elasticstack/compute/functions/ServerInfoToNodeMetadata.java

@@ -133,7 +133,7 @@ public class ServerInfoToNodeMetadata implements Function<ServerInfo, NodeMetada
          } catch (UncheckedExecutionException e) {
             logger.warn(e, "error finding drive %s: %s", input.getDriveUuid(), e.getMessage());
          }
-         return new VolumeBuilder().durable(true).type(Volume.Type.NAS).build();
+         return builder.durable(true).type(Volume.Type.NAS).build();
       }
    }
 

apis/filesystem/src/main/java/org/jclouds/filesystem/strategy/internal/FilesystemStorageStrategyImpl.java

@@ -241,7 +241,6 @@ public class FilesystemStorageStrategyImpl implements LocalStorageStrategy {
       BlobBuilder builder = blobBuilders.get();
       builder.name(key);
       File file = getFileForBlobKey(container, key);
-      Path path = file.toPath();
       ByteSource byteSource;
 
       if (getDirectoryBlobSuffix(key) != null) {

core/src/main/java/org/jclouds/io/payloads/ByteArrayPayload.java

@@ -31,7 +31,6 @@ public class ByteArrayPayload extends BasePayload<byte[]> {
       super(content);
       getContentMetadata().setContentLength(Long.valueOf(checkNotNull(content, "content").length));
       getContentMetadata().setContentMD5(md5);
-      checkArgument(content.length >= 0, "length cannot me negative");
    }
 
    /**

project/pom.xml

@@ -967,6 +967,7 @@
               EqualsOperandShouldHaveClassCompatibleWithThis,
               FindBadCast2,
               FindHEmismatch,
+              FindMaskedFields,
               FindNullDeref,
               FindReturnRef,
               FindUnsatisfiedObligation,