diff --git a/.hgsigs b/.hgsigs
--- a/.hgsigs
+++ b/.hgsigs
@@ -115,3 +115,4 @@ 1a45e49a6bed023deb229102a8903234d18054d3
 9a466b9f9792e3ad7ae3fc6c43c3ff2e136b718d 0 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
 b66e3ca0b90c3095ea28dfd39aa24247bebf5c20 0 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
 47dd34f2e7272be9e3b2a5a83cd0d20be44293f4 0 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
+1aa5083cbebbe7575c88f3402ab377539b484897 0 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
diff --git a/.hgtags b/.hgtags
--- a/.hgtags
+++ b/.hgtags
@@ -128,3 +128,4 @@ 1a45e49a6bed023deb229102a8903234d18054d3
 9a466b9f9792e3ad7ae3fc6c43c3ff2e136b718d 3.5.2
 b66e3ca0b90c3095ea28dfd39aa24247bebf5c20 3.6-rc
 47dd34f2e7272be9e3b2a5a83cd0d20be44293f4 3.6
+1aa5083cbebbe7575c88f3402ab377539b484897 3.6.1
diff --git a/contrib/dockerlib.sh b/contrib/dockerlib.sh
--- a/contrib/dockerlib.sh
+++ b/contrib/dockerlib.sh
@@ -35,8 +35,8 @@ function initcontainer() {
         # running docker. This is *very likely* to fail at some point.
         echo RUN useradd $DBUILDUSER -u 1000
     else
-        echo RUN groupadd $DBUILDUSER -g `id -g`
-        echo RUN useradd $DBUILDUSER -u `id -u` -g $DBUILDUSER
+        echo RUN groupadd $DBUILDUSER -g `id -g` --non-unique
+        echo RUN useradd $DBUILDUSER -u `id -u` -g $DBUILDUSER --non-unique
     fi
   ) | $DOCKER build --tag $CONTAINER -
 }
diff --git a/contrib/wix/templates.wxs b/contrib/wix/templates.wxs
--- a/contrib/wix/templates.wxs
+++ b/contrib/wix/templates.wxs
@@ -227,7 +227,7 @@
             <File Id="static.mercurial.js"       Name="mercurial.js" />
             <File Id="static.hgicon.png"         Name="hgicon.png" />
             <File Id="static.hglogo.png"         Name="hglogo.png" />
-            <File Id="static.style.coal.css"     Name="style-coal.css" />
+            <File Id="static.style.coal.css"     Name="style-extra-coal.css" />
             <File Id="static.style.gitweb.css"   Name="style-gitweb.css" />
             <File Id="static.style.monoblue.css" Name="style-monoblue.css" />
             <File Id="static.style.paper.css"    Name="style-paper.css" />
diff --git a/mercurial/dirstate.py b/mercurial/dirstate.py
--- a/mercurial/dirstate.py
+++ b/mercurial/dirstate.py
@@ -445,6 +445,11 @@ class dirstate(object):
         if self[f] not in "?r" and "_dirs" in self.__dict__:
             self._dirs.delpath(f)
 
+        if "_filefoldmap" in self.__dict__:
+            normed = util.normcase(f)
+            if normed in self._filefoldmap:
+                del self._filefoldmap[normed]
+
     def _addpath(self, f, state, mode, size, mtime):
         oldstate = self[f]
         if state == 'a' or oldstate == 'r':
diff --git a/mercurial/posix.py b/mercurial/posix.py
--- a/mercurial/posix.py
+++ b/mercurial/posix.py
@@ -182,14 +182,16 @@ def checklink(path):
                 # link creation might race, try again
                 if inst[0] == errno.EEXIST:
                     continue
-                # sshfs might report failure while successfully creating the link
-                if inst[0] == errno.EIO and os.path.exists(name):
-                    os.unlink(name)
-                return False
+                raise
             finally:
                 fd.close()
         except AttributeError:
             return False
+        except OSError as inst:
+            # sshfs might report failure while successfully creating the link
+            if inst[0] == errno.EIO and os.path.exists(name):
+                os.unlink(name)
+            return False
 
 def checkosfilename(path):
     '''Check that the base-relative path is a valid filename on this platform.