Don't report configure errors to CDash for successful packages (#23286)

Convert configure errors detected by our log scraper into warnings when
the package being installed reports that it was successful.

lib/spack/spack/reporters/cdash.py

@@ -161,14 +161,21 @@ def build_report_for_package(self, directory_name, package, duration):
             report_data[phase]['log'] = \
                 '\n'.join(report_data[phase]['loglines'])
             errors, warnings = parse_log_events(report_data[phase]['loglines'])
+
+            # Convert errors to warnings if the package reported success.
+            if package['result'] == 'success':
+                warnings = errors + warnings
+                errors = []
+
             # Cap the number of errors and warnings at 50 each.
             errors = errors[:50]
             warnings = warnings[:50]
             nerrors = len(errors)
 
-            if phase == 'configure' and nerrors > 0:
-                report_data[phase]['status'] = 1
+            if nerrors > 0:
                 self.success = False
+                if phase == 'configure':
+                    report_data[phase]['status'] = 1
 
             if phase == 'build':
                 # Convert log output from ASCII to Unicode and escape for XML.
@@ -189,13 +196,6 @@ def clean_log_event(event):
                             event['source_file'])
                     return event
 
-                # Convert errors to warnings if the package reported success.
-                if package['result'] == 'success':
-                    warnings = errors + warnings
-                    errors = []
-                else:
-                    self.success = False
-
                 report_data[phase]['errors'] = []
                 report_data[phase]['warnings'] = []
                 for error in errors:

lib/spack/spack/test/cmd/install.py

@@ -743,6 +743,25 @@ def test_cdash_auth_token(tmpdir, install_mockery, capfd):
             assert 'Using CDash auth token from environment' in out
 
 
+@pytest.mark.disable_clean_stage_check
+def test_cdash_configure_warning(tmpdir, mock_fetch, install_mockery, capfd):
+    # capfd interferes with Spack's capturing of e.g., Build.xml output
+    with capfd.disabled():
+        with tmpdir.as_cwd():
+            # Test would fail if install raised an error.
+            install(
+                '--log-file=cdash_reports',
+                '--log-format=cdash',
+                'configure-warning')
+            # Verify Configure.xml exists with expected contents.
+            report_dir = tmpdir.join('cdash_reports')
+            assert report_dir in tmpdir.listdir()
+            report_file = report_dir.join('Configure.xml')
+            assert report_file in report_dir.listdir()
+            content = report_file.open().read()
+            assert 'foo: No such file or directory' in content
+
+
 def test_compiler_bootstrap(
         install_mockery_mutable_config, mock_packages, mock_fetch,
         mock_archive, mutable_config, monkeypatch):

var/spack/repos/builtin.mock/packages/configure-warning/package.py

@@ -0,0 +1,33 @@
+# Copyright 2013-2021 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+
+
+class ConfigureWarning(AutotoolsPackage):
+    """This package prints output that looks like an error during configure, but
+       it actually installs successfully."""
+
+    homepage = "http://www.example.com"
+    url      = "http://www.example.com/configure-warning-1.0.tar.gz"
+
+    version('1.0', '0123456789abcdef0123456789abcdef')
+
+    parallel = False
+
+    def autoreconf(self, spec, prefix):
+        pass
+
+    def configure(self, spec, prefix):
+        print('foo: No such file or directory')
+        return 0
+
+    def build(self, spec, prefix):
+        pass
+
+    def install(self, spec, prefix):
+        # sanity_check_prefix requires something in the install directory
+        # Test requires overriding the one provided by `AutotoolsPackage`
+        mkdirp(prefix.bin)