diff -r 63165e4a76da -r c3a16c282dd8 mercurial/debugcommands.py
--- a/mercurial/debugcommands.py	Tue Mar 26 17:25:22 2019 +0100
+++ b/mercurial/debugcommands.py	Tue Mar 26 17:26:11 2019 +0100
@@ -851,10 +851,6 @@
 
     ui.write(("common heads: %s\n") %
              " ".join(sorted(short(n) for n in common)))
-    if lheads <= common:
-        ui.write(("local is subset\n"))
-    elif rheads <= common:
-        ui.write(("remote is subset\n"))
 
 _chunksize = 4 << 10