SIGINT is ignored in the Guix build environment.

--- a/Lib/test/test_regrtest.py
+++ b/Lib/test/test_regrtest.py
@@ -399,6 +399,8 @@
         output = self.run_tests('--fromfile', filename)
         self.check_executed_tests(output, tests)
 
+    @unittest.skipIf(True,
+        "KeyboardInterrupts do not work in the build environment")
     def test_interrupted(self):
         code = TEST_INTERRUPTED
         test = self.create_test('sigint', code=code)
@@ -416,6 +418,8 @@
                  % (self.TESTNAME_REGEX, len(tests)))
         self.check_line(output, regex)
 
+    @unittest.skipIf(True,
+        "KeyboardInterrupts do not work in the build environment")
     def test_slow_interrupted(self):
         # Issue #25373: test --slowest with an interrupted test
         code = TEST_INTERRUPTED
on>
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<tr><td><span title='2018-08-27 14:46:26 +0200'>2018-08-27</span></td><td><a href='/guix/commit/.mailmap?id=4715f92ef0b9650cc4075c69f17aa51e84da3f21'>Update email for Pierre Neidhardt.</a><span class='msg-avail'>...</span></td><td>Pierre Neidhardt</td></tr>
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