--- a/tests/test-topic-stack.t	Fri Feb 28 23:23:02 2020 +0700
+++ b/tests/test-topic-stack.t	Sat Feb 29 15:17:13 2020 +0700
@@ -385,17 +385,6 @@
   hg: parse error: stack takes no arguments, it works on current topic
   [255]
 
-Stack relation subscript:
-
-  $ hg log -r 'foo#stack[0]'
-  1 default {} public c_b
-  $ hg log -r 's0 and foo#stack[0]'
-  1 default {} public c_b
-  $ hg log -r 'foo#stack[4]'
-  5 default {foo} draft c_f
-  $ hg log -r 's4 and foo#stack[4]'
-  5 default {foo} draft c_f
-
 Case with multiple heads on the topic
 -------------------------------------