diff --git a/RoboFile.php b/RoboFile.php
index 3ac3118..973d943 100644
--- a/RoboFile.php
+++ b/RoboFile.php
@@ -1,6 +1,5 @@
 <?php
 
-use Robo\Collection\CollectionBuilder;
 use Robo\Result;
 
 const BASE = __DIR__.\DIRECTORY_SEPARATOR;
@@ -166,7 +165,7 @@ class RoboFile extends \Robo\Tasks {
                 (IS_WIN && (!exec(escapeshellarg($bin)." --help $blackhole", $junk, $status) || $status))
                 || (!IS_WIN && (!exec("which ".escapeshellarg($bin)." $blackhole", $junk, $status) || $status))
              ) {
-                    return false;
+                return false;
             }
         }
         return true;
@@ -283,7 +282,7 @@ class RoboFile extends \Robo\Tasks {
      * The commit to package may be any Git tree-ish identifier: a tag, a branch,
      * or any commit hash. If none is provided on the command line, Robo will prompt
      * for a commit to package; the default is "HEAD".
-     * 
+     *
      * The Arch base-devel group should be installed for this.
      */
     public function packageArch(string $commit = null): Result {
@@ -317,7 +316,7 @@ class RoboFile extends \Robo\Tasks {
      * The commit to package may be any Git tree-ish identifier: a tag, a branch,
      * or any commit hash. If none is provided on the command line, Robo will prompt
      * for a commit to package; the default is "HEAD".
-     * 
+     *
      * The pbuilder tool should be installed for this.
      */
     public function packageDeb(string $commit = null): Result {
@@ -404,7 +403,7 @@ class RoboFile extends \Robo\Tasks {
      * The commit to package may be any Git tree-ish identifier: a tag, a branch,
      * or any commit hash. If none is provided on the command line, Robo will prompt
      * for a commit to package; the default is "HEAD".
-     * 
+     *
      * Generic release tarballs will always be generated, but distribution-specific
      * packages are skipped when the required tools are not available
      */
@@ -416,7 +415,7 @@ class RoboFile extends \Robo\Tasks {
         // determine whether the distribution-specific packages can be built
         $dist = [
             'Arch'   => $this->toolExists("git", "makepkg", "updpkgsums"),
-            'Deb' => $this->toolExists("git", "sudo", "pbuilder"),
+            'Deb'    => $this->toolExists("git", "sudo", "pbuilder"),
         ];
         // start a collection
         $t = $this->collectionBuilder();
diff --git a/tests/lib/DatabaseDrivers/MySQLCommon.php b/tests/lib/DatabaseDrivers/MySQLCommon.php
index f9ea18d..d3f2956 100644
--- a/tests/lib/DatabaseDrivers/MySQLCommon.php
+++ b/tests/lib/DatabaseDrivers/MySQLCommon.php
@@ -57,4 +57,4 @@ trait MySQLCommon {
         }
         $db->query("SET FOREIGN_KEY_CHECKS=1");
     }
-}
\ No newline at end of file
+}
diff --git a/tests/lib/DatabaseDrivers/PostgreSQL.php b/tests/lib/DatabaseDrivers/PostgreSQL.php
index efd3d12..1af1b47 100644
--- a/tests/lib/DatabaseDrivers/PostgreSQL.php
+++ b/tests/lib/DatabaseDrivers/PostgreSQL.php
@@ -7,7 +7,6 @@ declare(strict_types=1);
 namespace JKingWeb\Arsse\Test\DatabaseDrivers;
 
 use JKingWeb\Arsse\Arsse;
-use JKingWeb\Arsse\Db\Driver;
 
 trait PostgreSQL {
     use PostgreSQLCommon;
diff --git a/tests/lib/DatabaseDrivers/PostgreSQLCommon.php b/tests/lib/DatabaseDrivers/PostgreSQLCommon.php
index def4c5f..ef65e03 100644
--- a/tests/lib/DatabaseDrivers/PostgreSQLCommon.php
+++ b/tests/lib/DatabaseDrivers/PostgreSQLCommon.php
@@ -6,7 +6,6 @@
 declare(strict_types=1);
 namespace JKingWeb\Arsse\Test\DatabaseDrivers;
 
-use JKingWeb\Arsse\Arsse;
 use JKingWeb\Arsse\Db\Driver;
 
 trait PostgreSQLCommon {
@@ -66,4 +65,4 @@ trait PostgreSQLCommon {
             self::dbExec($db, $st);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/tests/lib/DatabaseDrivers/SQLite3.php b/tests/lib/DatabaseDrivers/SQLite3.php
index 721a440..01a6c05 100644
--- a/tests/lib/DatabaseDrivers/SQLite3.php
+++ b/tests/lib/DatabaseDrivers/SQLite3.php
@@ -7,7 +7,6 @@ declare(strict_types=1);
 namespace JKingWeb\Arsse\Test\DatabaseDrivers;
 
 use JKingWeb\Arsse\Arsse;
-use JKingWeb\Arsse\Db\Driver;
 
 trait SQLite3 {
     use SQLite3Common;
diff --git a/tests/lib/DatabaseDrivers/SQLite3Common.php b/tests/lib/DatabaseDrivers/SQLite3Common.php
index b180cc3..9389d43 100644
--- a/tests/lib/DatabaseDrivers/SQLite3Common.php
+++ b/tests/lib/DatabaseDrivers/SQLite3Common.php
@@ -67,4 +67,4 @@ trait SQLite3Common {
             $db->exec($st);
         }
     }
-}
\ No newline at end of file
+}