diff --git a/buildbot/masters/datatracker/master.cfg b/buildbot/masters/datatracker/master.cfg
index 00f55af88..0ec44ff47 100644
--- a/buildbot/masters/datatracker/master.cfg
+++ b/buildbot/masters/datatracker/master.cfg
@@ -20,6 +20,7 @@ c['slaves'] = [
     BuildSlave("datatracker_lin_py27_3", datatracker_lin_py27_3_pw),
     BuildSlave("datatracker_osx_py27_4", datatracker_osx_py27_4_pw),
     BuildSlave("datatracker_lin_py27_5", datatracker_lin_py27_5_pw),
+    BuildSlave("datatracker_lin_py27_6", datatracker_lin_py27_6_pw),
 ]
 
 # 'protocols' contains information about protocols which master will use for
@@ -55,7 +56,7 @@ c['change_source'] = [
 
 from buildbot.schedulers.basic import SingleBranchScheduler, AnyBranchScheduler
 from buildbot.schedulers.forcesched import ForceScheduler
-from buildbot.schedulers.timed import Nightly, NightlyTriggerable
+from buildbot.schedulers.timed import Nightly
 from buildbot.changes import filter
 c['schedulers'] = [
     # Branch schedulers
@@ -77,12 +78,10 @@ c['schedulers'] = [
         change_filter=filter.ChangeFilter(branch_re='personal/.*')),
     AnyBranchScheduler(name="lin_test_personal",treeStableTimer=60*5,   builderNames=["[personal] Test Suite"],
         change_filter=filter.ChangeFilter(branch_re='personal/.*')),
-    AnyBranchScheduler(name="osx_test_personal",treeStableTimer=60*5,   builderNames=["[personal] Test Suite (OS X)"],
-        change_filter=filter.ChangeFilter(branch_re='personal/.*')),
     # Periodic Schedulers
     Nightly(name="lin_test_old_libs",  hour=16, minute=12, branch="trunk",  builderNames=["Verify Minimum Libs"],),
     Nightly(name="lin_test_libs",      hour=16, minute=42, branch="trunk",  builderNames=["Verify Latest Libs"],),
-    Nightly(name="crawler", hour=[5,7,9,11,13,15,17], minute=00, branch="trunk", onlyIfChanged=True, builderNames=["Test-Crawler"],),
+    Nightly(name="crawler", hour=[8,9,10,11,12,13,14,15,16,17], minute=00, branch="trunk", onlyIfChanged=True, builderNames=["Test-Crawler"],),
 
     # Force schedulers
     ForceScheduler(name="force_pyflakes",                               builderNames=["Check PyFlakes"]),
@@ -96,7 +95,6 @@ c['schedulers'] = [
     #
     ForceScheduler(name="force_pyflakes_personal",                      builderNames=["[personal] Check PyFlakes"]),
     ForceScheduler(name="force_lin_test_personal",                      builderNames=["[personal] Test Suite"]),
-    ForceScheduler(name="force_osx_test_personal",                      builderNames=["[personal] Test Suite (OS X)"]),
 ]
 
 ####### BUILDERS
@@ -125,8 +123,8 @@ class TestCrawlerShellCommand(WarningCountingShellCommand):
     command=["bin/test-crawl"]
 
     warningPatterns = {
-        "exceptions":       "^Traceback",
-        "failed":           " FAIL",
+        "exceptions":       "^(Traceback|  File|    |.*Error|.*Exception)",
+        "failed":           " FAIL  ",
         "warnings":         " WARN",
         "slow":             " SLOW",
         "invalid_html":     " invalid html:",
@@ -308,12 +306,6 @@ factory.addStep(SVN(
                 repourl=Interpolate('https://svn.tools.ietf.org/svn/tools/ietfdb/%(src::branch:~trunk)s'),
                 descriptionSuffix=[Interpolate('%(src::branch)s %(src::revision)s')],
             ))
-factory.addStep(ShellCommand(
-                descriptionDone="install requirements",
-                workdir=Interpolate('build/%(src::branch)s'),
-                haltOnFailure=True,
-                command=["pip", "install", "-r", "requirements.txt"],
-            ))
 factory.addStep(ShellCommand(
                 descriptionDone="seting up settings_local.py",
                 workdir=Interpolate('build/%(src::branch)s'),
@@ -334,11 +326,11 @@ factory.addStep(ShellCommand(
             ))
 
 c['builders'].append(BuilderConfig(name="Check PyFlakes", factory=factory, category="1. trunk",
-                slavenames=["datatracker_lin_py27_1", "datatracker_lin_py27_2", "datatracker_lin_py27_3"]))
+                slavenames=["datatracker_lin_py27_1", ]))
 c['builders'].append(BuilderConfig(name="[branch] Check PyFlakes", factory=factory, category="2. branch",
-                slavenames=["datatracker_lin_py27_1", "datatracker_lin_py27_2", "datatracker_lin_py27_3"]))
+                slavenames=["datatracker_lin_py27_2", ]))
 c['builders'].append(BuilderConfig(name="[personal] Check PyFlakes", factory=factory, category="3. personal",
-                slavenames=["datatracker_lin_py27_1", "datatracker_lin_py27_2", "datatracker_lin_py27_3"]))
+                slavenames=["datatracker_lin_py27_3", ]))
 
 # -*- section Builder_TestSuite -*-
 
@@ -390,12 +382,12 @@ factory.addStep(ShellCommand(
                     "propset", "--revprop", "-r", Property('got_revision'), "test:unittest", "passed" ],
             ))
 
-c['builders'].append(BuilderConfig(name="[branch] Test Suite", factory=factory, category="2. branch",
-        slavenames=["datatracker_lin_py27_1", "datatracker_lin_py27_2", "datatracker_lin_py27_3"]))
-c['builders'].append(BuilderConfig(name="[personal] Test Suite", factory=factory, category="3. personal",
-        slavenames=["datatracker_lin_py27_1", "datatracker_lin_py27_2", "datatracker_lin_py27_3"]))
 c['builders'].append(BuilderConfig(name="Test Suite", factory=factory, category="1. trunk",
-        slavenames=["datatracker_lin_py27_1", "datatracker_lin_py27_2", "datatracker_lin_py27_3"]))
+        slavenames=["datatracker_lin_py27_1", ]))
+c['builders'].append(BuilderConfig(name="[branch] Test Suite", factory=factory, category="2. branch",
+        slavenames=["datatracker_lin_py27_2", ]))
+c['builders'].append(BuilderConfig(name="[personal] Test Suite", factory=factory, category="3. personal",
+        slavenames=["datatracker_lin_py27_3", ]))
 
 # -*- section Builder_TestSuiteOSX -*-
 
@@ -445,8 +437,6 @@ c['builders'].append(BuilderConfig(name="Test Suite (OS X)", factory=factory, ca
         slavenames=["datatracker_osx_py27_4"]))
 c['builders'].append(BuilderConfig(name="[branch] Test Suite (OS X)", factory=factory, category="2. branch",
         slavenames=["datatracker_osx_py27_4"]))
-c['builders'].append(BuilderConfig(name="[personal] Test Suite (OS X)", factory=factory, category="3. personal",
-        slavenames=["datatracker_osx_py27_4"]))
 
 
 # -*- section Builder_TestCrawler -*-
@@ -493,7 +483,7 @@ factory.addStep(ShellCommand(
             ))
 
 c['builders'].append(BuilderConfig(name="Test-Crawler", factory=factory, category="1. trunk",
-        slavenames=["datatracker_lin_py27_1", ]))
+        slavenames=["datatracker_lin_py27_6", ]))
 
 
 # -*- section Builder_Verify_Old_Libs -*-