id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc,launchpad_bug 2846,nevow error against twisted-trunk,warner,,"The ""deprecations"" buildbot picked up a test failure (which will probably also be a runtime error) when running against Twisted trunk: {{{ [ERROR] Traceback (most recent call last): File ""/home/bb-tahoe/bb-tahoe/deprecations/build/.tox/upcoming-deprecations/local/lib/python2.7/site-packages/twisted/internet/defer.py"", line 150, in maybeDeferred result = f(*args, **kw) File ""/home/bb-tahoe/bb-tahoe/deprecations/build/.tox/upcoming-deprecations/local/lib/python2.7/site-packages/nevow/static.py"", line 311, in renderHTTP if request.setLastModified(self.fp.getmtime()) is http.CACHED: exceptions.AttributeError: 'FilePath' object has no attribute 'getmtime' allmydata.test.test_system.SystemTest.test_filesystem allmydata.test.web.test_web.Web.test_CSS_FILE }}} (see the log in https://tahoe-lafs.org/buildbot-tahoe-lafs/builders/deprecations/builds/140/steps/upcoming-deprecations/logs/stdio) This is using tahoe at [5a5da0de2a4b23c6b9b5540e4675ee532a8addb2], Twisted at ""1.6.0dev0"" (they don't use Versioneer, but it's probably [https://github.com/twisted/twisted/commit/0384682cad94bfa1d16a6fc80e795fa6765d7454 0384682cad94bfa1d16a6fc80e795fa6765d7454]), and Nevow-0.14.2 . Twisted just removed several methods from `FilePath` which had been (informally) deprecated back in 2007 (twisted [https://github.com/twisted/twisted/commit/a8805a0162d8c67830c5353caa18b5e387cf8ea6 a8805a0162d8c67830c5353caa18b5e387cf8ea6]), which would be the Twisted-2.6/8.0 era. Unfortunately, it appears that no actual `DeprecationWarning` was raised for these methods, so we didn't see any notice that they'd be going away: the only indication was in the docstring. The specific method that Nevow-0.14.2 is using is `getmtime`, which was replaced with a higher-precision variant named `getModificationTime`. (interesting trivia note: they replaced `getctime` with `getStatusChangeTime`, which would help correct my perpetual misbelief that the `c` stands for `creation`). This is a Nevow bug, but it's present in the most recent release (0.14.2), and the [https://github.com/twisted/nevow/ Nevow repo] has no further commits. So either we need to help get a fixed Nevow release out ASAP, or Tahoe needs to avoid using Nevow in a way that triggers this code path. Otherwise Tahoe will stop working as soon as the next Twisted release comes out. ",defect,closed,normal,soon,code-frontend-web,1.11.0,was already fixed,,,