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-rw-r--r--test/rubygems/test_gem_source_git.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/test/rubygems/test_gem_source_git.rb b/test/rubygems/test_gem_source_git.rb
index 78c415a9d3..f1c5eb9b71 100644
--- a/test/rubygems/test_gem_source_git.rb
+++ b/test/rubygems/test_gem_source_git.rb
@@ -25,7 +25,7 @@ class TestGemSourceGit < Gem::TestCase
git_gem 'b'
Dir.chdir 'git/a' do
- system @git, 'submodule', '--quiet', 'add', File.expand_path('../b'), 'b'
+ system @git, 'submodule', '--quiet', 'add', File.expand_path('../b'), 'b', out: IO::NULL
system @git, 'commit', '--quiet', '-m', 'add submodule b'
end