diff --git a/py/_plugin/pytest_pytester.py b/py/_plugin/pytest_pytester.py
index 4e1e5479f..f2375eeba 100644
--- a/py/_plugin/pytest_pytester.py
+++ b/py/_plugin/pytest_pytester.py
@@ -486,4 +486,3 @@ class LineMatcher:
                 extralines.append(nextline)
             else:
                 assert line == nextline
-        return True
diff --git a/testing/acceptance_test.py b/testing/acceptance_test.py
index 9e056bf59..78f2ddc65 100644
--- a/testing/acceptance_test.py
+++ b/testing/acceptance_test.py
@@ -8,7 +8,7 @@ class TestGeneralUsage:
         """)
         result = testdir.runpytest(testdir.tmpdir)
         assert result.ret != 0
-        assert result.stderr.fnmatch_lines([
+        result.stderr.fnmatch_lines([
             '*ERROR: hello'
         ])
 
@@ -24,7 +24,7 @@ class TestGeneralUsage:
         """)
         result = testdir.runpytest("-p", "xyz", "--xyz=123")
         assert result.ret == 0
-        assert result.stdout.fnmatch_lines([
+        result.stdout.fnmatch_lines([
             '*1 passed*',
         ])
 
@@ -46,7 +46,7 @@ class TestGeneralUsage:
                 assert x
         """)
         result = testdir.runpytest(p)
-        extra = result.stdout.fnmatch_lines([
+        result.stdout.fnmatch_lines([
             ">       assert x", 
             "E       assert 0",
         ])
@@ -60,7 +60,7 @@ class TestGeneralUsage:
         """)
         testdir.makepyfile(import_fails="import does_not_work")
         result = testdir.runpytest(p)
-        extra = result.stdout.fnmatch_lines([
+        result.stdout.fnmatch_lines([
             #XXX on jython this fails:  ">   import import_fails",
             "E   ImportError: No module named does_not_work",
         ])
@@ -71,7 +71,7 @@ class TestGeneralUsage:
         p2 = testdir.makefile(".pyc", "123")
         result = testdir.runpytest(p1, p2)
         assert result.ret != 0
-        assert result.stderr.fnmatch_lines([
+        result.stderr.fnmatch_lines([
             "*ERROR: can't collect: %s" %(p2,)
         ])
 
diff --git a/testing/plugin/test_pytest_capture.py b/testing/plugin/test_pytest_capture.py
index 39a4fc0fd..c96769609 100644
--- a/testing/plugin/test_pytest_capture.py
+++ b/testing/plugin/test_pytest_capture.py
@@ -187,7 +187,7 @@ class TestPerTestCapturing:
                 pass
         """)
         result = testdir.runpytest(p)
-        assert result.stdout.fnmatch_lines([
+        result.stdout.fnmatch_lines([
             '*teardown_function*',
             '*Captured stdout*',
             "setup func1*",
@@ -205,7 +205,7 @@ class TestPerTestCapturing:
                 pass
         """)
         result = testdir.runpytest(p)
-        assert result.stdout.fnmatch_lines([
+        result.stdout.fnmatch_lines([
             "*def teardown_module(mod):*", 
             "*Captured stdout*", 
             "*teardown module*", 
@@ -271,7 +271,7 @@ class TestLoggingInteraction:
             print ("suspend2 and captured %s" % (outerr,))
         """)
         result = testdir.runpython(p)
-        assert result.stdout.fnmatch_lines([
+        result.stdout.fnmatch_lines([
             "suspeneded and captured*hello1*",
             "suspend2 and captured*hello2*WARNING:root:hello3*",
         ])
@@ -358,7 +358,7 @@ class TestCaptureFuncarg:
                 pass
         """)
         result = testdir.runpytest(p)
-        assert result.stdout.fnmatch_lines([
+        result.stdout.fnmatch_lines([
             "*test_partial_setup_failure*",
             "*1 error*",
         ])
diff --git a/testing/plugin/test_pytest_default.py b/testing/plugin/test_pytest_default.py
index 4a85ad6be..ba7bf0eff 100644
--- a/testing/plugin/test_pytest_default.py
+++ b/testing/plugin/test_pytest_default.py
@@ -23,7 +23,7 @@ def test_exclude(testdir):
     testdir.makepyfile(test_ok="def test_pass(): pass")
     result = testdir.runpytest("--ignore=hello", "--ignore=hello2")
     assert result.ret == 0
-    assert result.stdout.fnmatch_lines(["*1 passed*"])
+    result.stdout.fnmatch_lines(["*1 passed*"])
 
 def test_pytest_report_iteminfo():
     class FakeItem(object):
@@ -43,4 +43,4 @@ def test_conftest_confcutdir(testdir):
             parser.addoption("--xyz", action="store_true")
     """))
     result = testdir.runpytest("-h", "--confcutdir=%s" % x, x)
-    assert result.stdout.fnmatch_lines(["*--xyz*"])
+    result.stdout.fnmatch_lines(["*--xyz*"])
diff --git a/testing/plugin/test_pytest_helpconfig.py b/testing/plugin/test_pytest_helpconfig.py
index dda34e263..b0dc9c612 100644
--- a/testing/plugin/test_pytest_helpconfig.py
+++ b/testing/plugin/test_pytest_helpconfig.py
@@ -6,14 +6,14 @@ def test_version(testdir):
     result = testdir.runpytest("--version")
     assert result.ret == 0
     #p = py.path.local(py.__file__).dirpath()
-    assert result.stderr.fnmatch_lines([
+    result.stderr.fnmatch_lines([
         '*py.test*%s*imported from*' % (py.version, )
     ])
 
 def test_helpconfig(testdir):
     result = testdir.runpytest("--help-config")
     assert result.ret == 0
-    assert result.stdout.fnmatch_lines([
+    result.stdout.fnmatch_lines([
         "*cmdline*conftest*ENV*",
     ])
 
@@ -36,7 +36,7 @@ def test_hookvalidation_unknown(testdir):
     """)
     result = testdir.runpytest()
     assert result.ret != 0
-    assert result.stderr.fnmatch_lines([
+    result.stderr.fnmatch_lines([
         '*unknown hook*pytest_hello*'
     ])
 
diff --git a/testing/plugin/test_pytest_mark.py b/testing/plugin/test_pytest_mark.py
index 68886ba67..95e3440b5 100644
--- a/testing/plugin/test_pytest_mark.py
+++ b/testing/plugin/test_pytest_mark.py
@@ -56,7 +56,7 @@ class TestFunctional:
                 assert hasattr(test_hello, 'hello')
         """)
         result = testdir.runpytest(p)
-        assert result.stdout.fnmatch_lines(["*passed*"])
+        result.stdout.fnmatch_lines(["*passed*"])
 
     def test_mark_per_module(self, testdir):
         item = testdir.getitem("""
diff --git a/testing/plugin/test_pytest_pytester.py b/testing/plugin/test_pytest_pytester.py
index 9aef4a0e6..c4a5ab100 100644
--- a/testing/plugin/test_pytest_pytester.py
+++ b/testing/plugin/test_pytest_pytester.py
@@ -63,7 +63,7 @@ def test_testdir_runs_with_plugin(testdir):
             assert 1
     """)
     result = testdir.runpytest()
-    assert result.stdout.fnmatch_lines([
+    result.stdout.fnmatch_lines([
         "*1 passed*"
     ])
 
diff --git a/testing/plugin/test_pytest_runner.py b/testing/plugin/test_pytest_runner.py
index f4e9a9ff0..72c67954d 100644
--- a/testing/plugin/test_pytest_runner.py
+++ b/testing/plugin/test_pytest_runner.py
@@ -310,7 +310,7 @@ def test_runtest_in_module_ordering(testdir):
             del item.function.mylist 
     """)
     result = testdir.runpytest(p1)
-    assert result.stdout.fnmatch_lines([
+    result.stdout.fnmatch_lines([
         "*2 passed*"
     ])
 
diff --git a/testing/plugin/test_pytest_skipping.py b/testing/plugin/test_pytest_skipping.py
index f90c358f6..91620daa8 100644
--- a/testing/plugin/test_pytest_skipping.py
+++ b/testing/plugin/test_pytest_skipping.py
@@ -8,7 +8,7 @@ def test_xfail_not_report_default(testdir):
             assert 0
     """)
     result = testdir.runpytest(p, '-v')
-    extra = result.stdout.fnmatch_lines([
+    result.stdout.fnmatch_lines([
         "*1 expected failures*--report=xfailed*",
     ])
 
@@ -19,7 +19,7 @@ def test_skip_not_report_default(testdir):
             py.test.skip("hello")
     """)
     result = testdir.runpytest(p, '-v')
-    extra = result.stdout.fnmatch_lines([
+    result.stdout.fnmatch_lines([
         "*1 skipped*--report=skipped*",
     ])
 
@@ -35,7 +35,7 @@ def test_xfail_decorator(testdir):
             assert 1
     """)
     result = testdir.runpytest(p, '--report=xfailed')
-    extra = result.stdout.fnmatch_lines([
+    result.stdout.fnmatch_lines([
         "*expected failures*",
         "*test_one.test_this*test_one.py:4*",
         "*UNEXPECTEDLY PASSING*",
@@ -52,7 +52,7 @@ def test_xfail_at_module(testdir):
             assert 0
     """)
     result = testdir.runpytest(p, '--report=xfailed')
-    extra = result.stdout.fnmatch_lines([
+    result.stdout.fnmatch_lines([
         "*expected failures*",
         "*test_intentional_xfail*:4*",
         "*1 xfailed*"
@@ -67,7 +67,7 @@ def test_xfail_evalfalse_but_fails(testdir):
             assert 0
     """)
     result = testdir.runpytest(p, '--report=xfailed')
-    extra = result.stdout.fnmatch_lines([
+    result.stdout.fnmatch_lines([
         "*test_xfail_evalfalse_but_fails*:4*",
         "*1 failed*"
     ])
@@ -81,7 +81,7 @@ def test_skipif_decorator(testdir):
             assert 0
     """)
     result = testdir.runpytest(p, '--report=skipped')
-    extra = result.stdout.fnmatch_lines([
+    result.stdout.fnmatch_lines([
         "*Skipped*platform*",
         "*1 skipped*"
     ])
@@ -99,7 +99,7 @@ def test_skipif_class(testdir):
                 assert 0
     """)
     result = testdir.runpytest(p)
-    extra = result.stdout.fnmatch_lines([
+    result.stdout.fnmatch_lines([
         "*2 skipped*"
     ])
 
@@ -165,7 +165,7 @@ def test_skipped_reasons_functional(testdir):
         """
     )
     result = testdir.runpytest('--report=skipped') 
-    extra = result.stdout.fnmatch_lines([
+    result.stdout.fnmatch_lines([
         "*test_one.py ss",
         "*test_two.py S",
         "___* skipped test summary *_", 
diff --git a/testing/plugin/test_pytest_terminal.py b/testing/plugin/test_pytest_terminal.py
index 36e45f988..8aad9f7c8 100644
--- a/testing/plugin/test_pytest_terminal.py
+++ b/testing/plugin/test_pytest_terminal.py
@@ -226,7 +226,7 @@ class TestTerminal:
                 pass
         """)
         result = testdir.runpytest(p2)
-        assert result.stdout.fnmatch_lines([
+        result.stdout.fnmatch_lines([
             "*test_p2.py .",
             "*1 passed*",
         ])
@@ -461,7 +461,7 @@ class TestTerminalFunctional:
            """
         )
         result = testdir.runpytest("-k", "test_two:", testpath)
-        extra = result.stdout.fnmatch_lines([
+        result.stdout.fnmatch_lines([
             "*test_deselected.py ..", 
             "=* 1 test*deselected by 'test_two:'*=", 
         ])
@@ -494,7 +494,7 @@ class TestTerminalFunctional:
             result = testdir.runpytest()
         finally:
             old.chdir()
-        extra = result.stdout.fnmatch_lines([
+        result.stdout.fnmatch_lines([
             "test_passes.py ..", 
             "* 2 pass*",
         ])
@@ -507,7 +507,7 @@ class TestTerminalFunctional:
         """)
         result = testdir.runpytest()
         verinfo = ".".join(map(str, py.std.sys.version_info[:3]))
-        extra = result.stdout.fnmatch_lines([
+        result.stdout.fnmatch_lines([
             "*===== test session starts ====*",
             "python: platform %s -- Python %s*" %(
                     py.std.sys.platform, verinfo), # , py.std.sys.executable),
@@ -577,13 +577,13 @@ def test_terminalreporter_reportopt_conftestsetting(testdir):
             assert not tr.hasopt('qwe')
     """)
     result = testdir.runpytest()
-    assert result.stdout.fnmatch_lines([
+    result.stdout.fnmatch_lines([
         "*1 passed*"
     ])
 
 def test_trace_reporting(testdir):
     result = testdir.runpytest("--traceconfig")
-    assert result.stdout.fnmatch_lines([
+    result.stdout.fnmatch_lines([
         "*active plugins*"
     ])
     assert result.ret == 0
@@ -592,7 +592,7 @@ def test_trace_reporting(testdir):
 def test_show_funcarg(testdir, option):
     args = option._getcmdargs() + ["--funcargs"]
     result = testdir.runpytest(*args)
-    assert result.stdout.fnmatch_lines([
+    result.stdout.fnmatch_lines([
             "*tmpdir*",
             "*temporary directory*",
         ]
diff --git a/testing/test_funcargs.py b/testing/test_funcargs.py
index 6468cbf56..90a4e6c86 100644
--- a/testing/test_funcargs.py
+++ b/testing/test_funcargs.py
@@ -83,7 +83,7 @@ class TestFillFuncArgs:
                     assert something is self 
         """)
         result = testdir.runpytest(p)
-        assert result.stdout.fnmatch_lines([
+        result.stdout.fnmatch_lines([
             "*1 passed*"
         ])
 
@@ -201,7 +201,7 @@ class TestRequest:
                 assert len(l) == 1
         """)
         result = testdir.runpytest(p)
-        assert result.stdout.fnmatch_lines([
+        result.stdout.fnmatch_lines([
             "*1 passed*1 error*"
             ])
 
@@ -430,7 +430,7 @@ class TestGenfuncFunctional:
                     assert arg1 == arg2 
         """)
         result = testdir.runpytest("-v", p)
-        assert result.stdout.fnmatch_lines([
+        result.stdout.fnmatch_lines([
             "*test_myfunc*0*PASS*", 
             "*test_myfunc*1*FAIL*", 
             "*1 failed, 1 passed*"
@@ -451,7 +451,7 @@ class TestGenfuncFunctional:
                 assert arg1 in (10, 20)
         """)
         result = testdir.runpytest("-v", p)
-        assert result.stdout.fnmatch_lines([
+        result.stdout.fnmatch_lines([
             "*test_func1*0*PASS*", 
             "*test_func1*1*FAIL*", 
             "*test_func2*PASS*",
@@ -478,7 +478,7 @@ class TestGenfuncFunctional:
                     assert arg1 == arg2 
         """)
         result = testdir.runpytest("-v", p)
-        assert result.stdout.fnmatch_lines([
+        result.stdout.fnmatch_lines([
             "*test_myfunc*hello*PASS*", 
             "*test_myfunc*world*FAIL*", 
             "*1 failed, 1 passed*"
@@ -494,7 +494,7 @@ class TestGenfuncFunctional:
                     assert hello == "world"
         """)
         result = testdir.runpytest("-v", p)
-        assert result.stdout.fnmatch_lines([
+        result.stdout.fnmatch_lines([
             "*test_myfunc*hello*PASS*", 
             "*1 passed*"
         ])
@@ -511,7 +511,7 @@ class TestGenfuncFunctional:
                     self.x = 1
         """)
         result = testdir.runpytest("-v", p)
-        assert result.stdout.fnmatch_lines([
+        result.stdout.fnmatch_lines([
             "*test_func*0*PASS*", 
             "*test_func*1*PASS*", 
             "*2 pass*",
diff --git a/testing/test_parseopt.py b/testing/test_parseopt.py
index 1519caffe..3b3bb2cba 100644
--- a/testing/test_parseopt.py
+++ b/testing/test_parseopt.py
@@ -115,5 +115,5 @@ def test_addoption_parser_epilog(testdir):
     """)
     result = testdir.runpytest('--help')
     #assert result.ret != 0
-    assert result.stdout.fnmatch_lines(["*hint: hello world*"])
+    result.stdout.fnmatch_lines(["*hint: hello world*"])
 
diff --git a/testing/test_pluginmanager.py b/testing/test_pluginmanager.py
index ee13786d2..ad80cc4f6 100644
--- a/testing/test_pluginmanager.py
+++ b/testing/test_pluginmanager.py
@@ -81,7 +81,7 @@ class TestBootstrapping:
         monkeypatch.setenv('PYTEST_PLUGINS', 'pytest_x500', prepend=",")
         result = testdir.runpytest(p)
         assert result.ret == 0
-        extra = result.stdout.fnmatch_lines(["*1 passed in*"])
+        result.stdout.fnmatch_lines(["*1 passed in*"])
 
     def test_import_plugin_importname(self, testdir):
         pluginmanager = PluginManager()