--- a/hgext/rebase.py	Mon Jan 27 12:38:59 2020 -0800
+++ b/hgext/rebase.py	Mon Jan 27 09:14:19 2020 -0800
@@ -1011,10 +1011,10 @@
     action = cmdutil.check_at_most_one_arg(opts, b'abort', b'stop', b'continue')
     if action:
         cmdutil.check_incompatible_arguments(
-            opts, action, b'confirm', b'dry_run'
+            opts, action, [b'confirm', b'dry_run']
         )
         cmdutil.check_incompatible_arguments(
-            opts, action, b'rev', b'source', b'base', b'dest'
+            opts, action, [b'rev', b'source', b'base', b'dest']
         )
     cmdutil.check_at_most_one_arg(opts, b'confirm', b'dry_run')
     cmdutil.check_at_most_one_arg(opts, b'rev', b'source', b'base')
@@ -1028,7 +1028,7 @@
     if opts.get(b'auto_orphans'):
         disallowed_opts = set(opts) - {b'auto_orphans'}
         cmdutil.check_incompatible_arguments(
-            opts, b'auto_orphans', *disallowed_opts
+            opts, b'auto_orphans', disallowed_opts
         )
 
         userrevs = list(repo.revs(opts.get(b'auto_orphans')))

--- a/hgext/releasenotes.py	Mon Jan 27 12:38:59 2020 -0800
+++ b/hgext/releasenotes.py	Mon Jan 27 09:14:19 2020 -0800
@@ -654,7 +654,7 @@
     opts = pycompat.byteskwargs(opts)
     sections = releasenotessections(ui, repo)
 
-    cmdutil.check_incompatible_arguments(opts, b'list', b'rev', b'check')
+    cmdutil.check_incompatible_arguments(opts, b'list', [b'rev', b'check'])
 
     if opts.get(b'list'):
         return _getadmonitionlist(ui, sections)

--- a/hgext/transplant.py	Mon Jan 27 12:38:59 2020 -0800
+++ b/hgext/transplant.py	Mon Jan 27 09:14:19 2020 -0800
@@ -761,12 +761,12 @@
     def checkopts(opts, revs):
         if opts.get(b'continue'):
             cmdutil.check_incompatible_arguments(
-                opts, b'continue', b'branch', b'all', b'merge'
+                opts, b'continue', [b'branch', b'all', b'merge']
             )
             return
         if opts.get(b'stop'):
             cmdutil.check_incompatible_arguments(
-                opts, b'stop', b'branch', b'all', b'merge'
+                opts, b'stop', [b'branch', b'all', b'merge']
             )
             return
         if not (

--- a/mercurial/cmdutil.py	Mon Jan 27 12:38:59 2020 -0800
+++ b/mercurial/cmdutil.py	Mon Jan 27 09:14:19 2020 -0800
@@ -281,11 +281,11 @@
     return previous
 
 
-def check_incompatible_arguments(opts, first, *others):
+def check_incompatible_arguments(opts, first, others):
     """abort if the first argument is given along with any of the others
 
     Unlike check_at_most_one_arg(), `others` are not mutually exclusive
-    among themselves.
+    among themselves, and they're passed as a single collection.
     """
     for other in others:
         check_at_most_one_arg(opts, first, other)

--- a/mercurial/commands.py	Mon Jan 27 12:38:59 2020 -0800
+++ b/mercurial/commands.py	Mon Jan 27 09:14:19 2020 -0800
@@ -1228,7 +1228,7 @@
 
     action = cmdutil.check_at_most_one_arg(opts, b'delete', b'rename', b'list')
     if action:
-        cmdutil.check_incompatible_arguments(opts, action, b'rev')
+        cmdutil.check_incompatible_arguments(opts, action, [b'rev'])
     elif names or rev:
         action = b'add'
     elif inactive:
@@ -1236,7 +1236,9 @@
     else:
         action = b'list'
 
-    cmdutil.check_incompatible_arguments(opts, b'inactive', b'delete', b'list')
+    cmdutil.check_incompatible_arguments(
+        opts, b'inactive', [b'delete', b'list']
+    )
     if not names and action in {b'add', b'delete'}:
         raise error.Abort(_(b"bookmark name required"))
 
@@ -4847,7 +4849,7 @@
     abort = opts.get(b'abort')
     if abort and repo.dirstate.p2() == nullid:
         cmdutil.wrongtooltocontinue(repo, _(b'merge'))
-    cmdutil.check_incompatible_arguments(opts, b'abort', b'rev', b'preview')
+    cmdutil.check_incompatible_arguments(opts, b'abort', [b'rev', b'preview'])
     if abort:
         state = cmdutil.getunfinishedstate(repo)
         if state and state._opname != b'merge':

--- a/relnotes/next	Mon Jan 27 12:38:59 2020 -0800
+++ b/relnotes/next	Mon Jan 27 09:14:19 2020 -0800
@@ -17,3 +17,6 @@
 
  * `hg.merge()` has lost its `abort` argument. Please call
    `hg.abortmerge()` directly instead.
+
+ * The `*others` argument of `cmdutil.check_incompatible_arguments()`
+   changed from being varargs argument to being a single collection.