Fixed more permission and dependency issues

Change-Id: I004bb23031dbb9bb7464d258d9306e7254b2e2a4
diff --git a/t/script/usage.t b/t/script/usage.t
index 170eccb..be09872 100644
--- a/t/script/usage.t
+++ b/t/script/usage.t
@@ -4,7 +4,7 @@
 use File::Basename 'dirname';
 use File::Spec::Functions qw/catdir catfile/;
 use File::Temp qw/ :POSIX /;
-use Mojo::Util qw/slurp/;
+use Mojo::File;
 use Mojo::JSON qw/decode_json/;
 use IO::Uncompress::Gunzip;
 use Test::More;