diff --git a/mercurial/scmutil.py b/mercurial/scmutil.py
--- a/mercurial/scmutil.py
+++ b/mercurial/scmutil.py
@@ -1222,6 +1222,9 @@
     'unbundle',
 ]
 
+# A marker that tells the evolve extension to suppress its own reporting
+_reportstroubledchangesets = True
+
 def registersummarycallback(repo, otr, txnname=''):
     """register a callback to issue a summary after the transaction is closed
     """
@@ -1257,6 +1260,32 @@
                 repo.ui.status(_('obsoleted %i changesets\n')
                                % len(obsoleted))
 
+    if obsolete.isenabled(repo, obsolete.createmarkersopt):
+        instabilitytypes = [
+            ('orphan', 'orphan'),
+            ('phase-divergent', 'phasedivergent'),
+            ('content-divergent', 'contentdivergent'),
+        ]
+
+        def getinstabilitycounts(repo):
+            filtered = repo.changelog.filteredrevs
+            counts = {}
+            for instability, revset in instabilitytypes:
+                counts[instability] = len(set(obsolete.getrevs(repo, revset)) -
+                                          filtered)
+            return counts
+
+        oldinstabilitycounts = getinstabilitycounts(repo)
+        @reportsummary
+        def reportnewinstabilities(repo, tr):
+            newinstabilitycounts = getinstabilitycounts(repo)
+            for instability, revset in instabilitytypes:
+                delta = (newinstabilitycounts[instability] -
+                         oldinstabilitycounts[instability])
+                if delta > 0:
+                    repo.ui.warn(_('%i new %s changesets\n') %
+                                 (delta, instability))
+
     if txmatch(_reportnewcssource):
         @reportsummary
         def reportnewcs(repo, tr):
diff --git a/tests/test-amend.t b/tests/test-amend.t
--- a/tests/test-amend.t
+++ b/tests/test-amend.t
@@ -185,6 +185,7 @@
   > EOF
 
   $ hg amend
+  1 new orphan changesets
   $ hg log -T '{rev} {node|short} {desc}\n' -G
   @  3 be169c7e8dbe B
   |
diff --git a/tests/test-cache-abuse.t b/tests/test-cache-abuse.t
--- a/tests/test-cache-abuse.t
+++ b/tests/test-cache-abuse.t
@@ -70,6 +70,11 @@
   $ damage "tags --hidden" tags2
   $ damage tags tags2-visible
   $ damage "tag -f t3" hgtagsfnodes1
+  1 new orphan changesets
+  1 new orphan changesets
+  1 new orphan changesets
+  1 new orphan changesets
+  1 new orphan changesets
 
 Beat up branch caches:
 
diff --git a/tests/test-commit-amend.t b/tests/test-commit-amend.t
--- a/tests/test-commit-amend.t
+++ b/tests/test-commit-amend.t
@@ -605,6 +605,7 @@
     babar
   
   $ hg commit --amend
+  1 new orphan changesets
   $ hg log -r 'orphan()'
   changeset:   16:37973c7e0b61
   branch:      a
diff --git a/tests/test-drawdag.t b/tests/test-drawdag.t
--- a/tests/test-drawdag.t
+++ b/tests/test-drawdag.t
@@ -206,6 +206,7 @@
   >    \|/
   >     A
   > EOS
+  1 new orphan changesets
 
   $ hg log -r 'sort(all(), topo)' -G --hidden -T '{desc} {node}'
   *  G 711f53bbef0bebd12eb6f0511d5e2e998b984846
diff --git a/tests/test-exchange-obsmarkers-case-A3.t b/tests/test-exchange-obsmarkers-case-A3.t
--- a/tests/test-exchange-obsmarkers-case-A3.t
+++ b/tests/test-exchange-obsmarkers-case-A3.t
@@ -74,6 +74,7 @@
   created new head
   $ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(A1)'`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete `getid 'desc(B0)'` `getid 'desc(B1)'`
   obsoleted 1 changesets
   $ hg log -G --hidden
@@ -163,6 +164,7 @@
   created new head
   $ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(A1)'`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete `getid 'desc(B0)'` `getid 'desc(B1)'`
   obsoleted 1 changesets
   $ hg log -G --hidden
@@ -218,6 +220,7 @@
   remote: added 1 changesets with 1 changes to 1 files (+1 heads)
   remote: 1 new obsolescence markers
   remote: obsoleted 1 changesets
+  remote: 1 new orphan changesets
   ## post push state
   # obstore: main
   28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -234,6 +237,7 @@
   added 1 changesets with 1 changes to 1 files (+1 heads)
   1 new obsolescence markers
   obsoleted 1 changesets
+  1 new orphan changesets
   new changesets e5ea8f9c7314
   (run 'hg heads' to see heads, 'hg merge' to merge)
   ## post pull state
diff --git a/tests/test-exchange-obsmarkers-case-A4.t b/tests/test-exchange-obsmarkers-case-A4.t
--- a/tests/test-exchange-obsmarkers-case-A4.t
+++ b/tests/test-exchange-obsmarkers-case-A4.t
@@ -65,6 +65,7 @@
   $ hg debugobsolete aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa `getid 'desc(A0)'`
   $ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(A1)'`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg log -G --hidden
   @  e5ea8f9c7314 (draft): A1
   |
diff --git a/tests/test-exchange-obsmarkers-case-B5.t b/tests/test-exchange-obsmarkers-case-B5.t
--- a/tests/test-exchange-obsmarkers-case-B5.t
+++ b/tests/test-exchange-obsmarkers-case-B5.t
@@ -71,6 +71,7 @@
   $ mkcommit B1
   $ hg debugobsolete --hidden `getid 'desc(A0)'` `getid 'desc(A1)'`
   obsoleted 1 changesets
+  2 new orphan changesets
   $ hg debugobsolete --hidden aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa `getid 'desc(B0)'`
   $ hg debugobsolete --hidden `getid 'desc(B0)'` `getid 'desc(B1)'`
   obsoleted 1 changesets
diff --git a/tests/test-exchange-obsmarkers-case-C1.t b/tests/test-exchange-obsmarkers-case-C1.t
--- a/tests/test-exchange-obsmarkers-case-C1.t
+++ b/tests/test-exchange-obsmarkers-case-C1.t
@@ -58,6 +58,7 @@
   $ mkcommit A
   $ mkcommit B
   $ hg prune -qd '0 0' '.~1'
+  1 new orphan changesets
   $ hg prune -qd '0 0' .
   $ hg log -G --hidden
   x  f6fbb35d8ac9 (draft): B
diff --git a/tests/test-exchange-obsmarkers-case-C4.t b/tests/test-exchange-obsmarkers-case-C4.t
--- a/tests/test-exchange-obsmarkers-case-C4.t
+++ b/tests/test-exchange-obsmarkers-case-C4.t
@@ -67,6 +67,7 @@
   $ hg debugobsolete --hidden `getid 'desc(A)'` `getid 'desc(B)'`
   obsoleted 1 changesets
   $ hg debugobsolete --hidden `getid 'desc(A)'` `getid 'desc(C)'`
+  2 new content-divergent changesets
   $ hg prune -qd '0 0' .
   $ hg log -G --hidden
   x  7f7f229b13a6 (draft): C
diff --git a/tests/test-exchange-obsmarkers-case-D1.t b/tests/test-exchange-obsmarkers-case-D1.t
--- a/tests/test-exchange-obsmarkers-case-D1.t
+++ b/tests/test-exchange-obsmarkers-case-D1.t
@@ -62,6 +62,7 @@
   created new head
   $ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(A1)'`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg prune -d '0 0' 'desc(B)'
   obsoleted 1 changesets
   $ hg strip --hidden -q 'desc(A0)'
diff --git a/tests/test-exchange-obsmarkers-case-D4.t b/tests/test-exchange-obsmarkers-case-D4.t
--- a/tests/test-exchange-obsmarkers-case-D4.t
+++ b/tests/test-exchange-obsmarkers-case-D4.t
@@ -60,6 +60,7 @@
   $ mkcommit B1
   $ hg debugobsolete `getid 'desc(A0)'` aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa `getid 'desc(A1)'`
   $ hg debugobsolete `getid 'desc(B0)'` bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
   obsoleted 1 changesets
diff --git a/tests/test-histedit-obsolete.t b/tests/test-histedit-obsolete.t
--- a/tests/test-histedit-obsolete.t
+++ b/tests/test-histedit-obsolete.t
@@ -222,6 +222,7 @@
   [1]
   $ echo c >> c
   $ hg histedit --continue
+  1 new orphan changesets
 
   $ hg log -r 'orphan()'
   11:c13eb81022ca f (no-eol)
diff --git a/tests/test-obshistory.t b/tests/test-obshistory.t
--- a/tests/test-obshistory.t
+++ b/tests/test-obshistory.t
@@ -333,6 +333,7 @@
 
   $ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(C0)'`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete `getid 'desc(B0)'` `getid 'desc(C0)'`
   obsoleted 1 changesets
 
@@ -412,6 +413,7 @@
   updating to a hidden changeset 471f378eab4c
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg commit --amend -m "A2"
+  2 new content-divergent changesets
   $ hg log --hidden -G
   @  changeset:   3:65b757b745b9
   |  tag:         tip
@@ -498,6 +500,7 @@
 
   $ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(C0)'`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete `getid 'desc(B1)'` `getid 'desc(C0)'`
   obsoleted 1 changesets
 
diff --git a/tests/test-obsmarker-template.t b/tests/test-obsmarker-template.t
--- a/tests/test-obsmarker-template.t
+++ b/tests/test-obsmarker-template.t
@@ -591,6 +591,7 @@
   created new head
   $ hg debugobsolete `getid "desc(A0)"` `getid "desc(C0)"`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete `getid "desc(B0)"` `getid "desc(C0)"`
   obsoleted 1 changesets
 
@@ -817,6 +818,7 @@
   updating to a hidden changeset 471f378eab4c
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg commit --amend -m "A2"
+  2 new content-divergent changesets
   $ hg log --hidden -G
   @  changeset:   3:65b757b745b9
   |  tag:         tip
@@ -1112,6 +1114,7 @@
   created new head
   $ hg debugobsolete `getid "desc(A0)"` `getid "desc(C0)"`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete `getid "desc(B1)"` `getid "desc(C0)"`
   obsoleted 1 changesets
 
@@ -1589,6 +1592,7 @@
 
   $ hg debugobsolete `getid "desc(A0)"` `getid "desc(B0)"`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete `getid "desc(B0)"` `getid "desc(C0)"`
   obsoleted 1 changesets
   $ hg debugobsolete `getid "desc(B0)"` `getid "desc(A0)"`
@@ -1874,10 +1878,12 @@
   $ hg up 6
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg commit --amend -m "Add only B"
+  1 new orphan changesets
 
   $ hg up 6 --hidden
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg commit --amend -m "Add B only"
+  4 new content-divergent changesets
 
   $ hg log -G
   @  changeset:   9:0b997eb7ceee
diff --git a/tests/test-obsolete-bundle-strip.t b/tests/test-obsolete-bundle-strip.t
--- a/tests/test-obsolete-bundle-strip.t
+++ b/tests/test-obsolete-bundle-strip.t
@@ -272,6 +272,7 @@
   $ hg debugobsolete a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0 `getid 'desc("C-A0")'`
   $ hg debugobsolete `getid 'desc("C-A0")'` `getid 'desc("C-A1")'`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete --record-parents `getid 'desc("C-B0")'`
   obsoleted 1 changesets
   $ hg up 'desc("ROOT")'
@@ -601,6 +602,7 @@
   $ hg debugobsolete a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0 `getid 'desc("C-A0")'`
   $ hg debugobsolete `getid 'desc("C-A0")'` `getid 'desc("C-A1")'`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete --record-parents `getid 'desc("C-B0")'`
   obsoleted 1 changesets
 
@@ -770,8 +772,10 @@
   $ hg debugobsolete `getid 'desc("C-A")'` `getid 'desc("C-B")'` `getid 'desc("C-C")'` # record split
   obsoleted 1 changesets
   $ hg debugobsolete `getid 'desc("C-A")'` `getid 'desc("C-D")'` # other divergent
+  3 new content-divergent changesets
   $ hg debugobsolete `getid 'desc("C-A")'` b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0
   $ hg debugobsolete b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0 `getid 'desc("C-E")'`
+  1 new content-divergent changesets
   $ hg debugobsolete `getid 'desc("C-B")'` `getid 'desc("C-E")'`
   obsoleted 1 changesets
   $ hg debugobsolete `getid 'desc("C-C")'` `getid 'desc("C-E")'`
@@ -952,6 +956,7 @@
       b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0 2f20ff6509f0e013e90c5c8efd996131c918b0ca 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
       c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0 2f20ff6509f0e013e90c5c8efd996131c918b0ca 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
   # stripping: saved backup bundle to $TESTTMP/split-fold/.hg/strip-backup/2f20ff6509f0-8adeb22d-backup.hg
+  3 new content-divergent changesets
   ### Backup markers ###
       06dc9da25ef03e1ff7864dded5fcba42eff2a3f0 2f20ff6509f0e013e90c5c8efd996131c918b0ca 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
       27ec657ca21dd27c36c99fa75586f72ff0d442f1 2f20ff6509f0e013e90c5c8efd996131c918b0ca 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -1121,6 +1126,7 @@
       b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0 2f20ff6509f0e013e90c5c8efd996131c918b0ca 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
       c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0 2f20ff6509f0e013e90c5c8efd996131c918b0ca 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
   # stripping: saved backup bundle to $TESTTMP/split-fold/.hg/strip-backup/9ac430e15fca-36b6476a-backup.hg
+  3 new content-divergent changesets
   ### Backup markers ###
       06dc9da25ef03e1ff7864dded5fcba42eff2a3f0 2f20ff6509f0e013e90c5c8efd996131c918b0ca 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
       27ec657ca21dd27c36c99fa75586f72ff0d442f1 2f20ff6509f0e013e90c5c8efd996131c918b0ca 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
diff --git a/tests/test-obsolete-changeset-exchange.t b/tests/test-obsolete-changeset-exchange.t
--- a/tests/test-obsolete-changeset-exchange.t
+++ b/tests/test-obsolete-changeset-exchange.t
@@ -71,6 +71,7 @@
   adding manifests
   adding file changes
   added 1 changesets with 0 changes to 1 files (+1 heads)
+  1 new phase-divergent changesets
   new changesets f89bcc95eba5
   (run 'hg heads' to see heads, 'hg merge' to merge)
 
diff --git a/tests/test-obsolete-distributed.t b/tests/test-obsolete-distributed.t
--- a/tests/test-obsolete-distributed.t
+++ b/tests/test-obsolete-distributed.t
@@ -276,6 +276,7 @@
   $ hg up 'desc("c_A")'
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg commit --amend -m 'c_A1'
+  1 new orphan changesets
   $ hg rebase -r 'desc("c_B0")' -d . # no easy way to rewrite the message with the rebase
   rebasing 2:ef908e42ce65 "c_B0"
   $ hg up
@@ -323,6 +324,7 @@
   $ hg up 'desc("c_A")'
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg commit --amend -m 'c_A2'
+  1 new orphan changesets
   $ hg rebase -r 'desc("c_B1")' -d . # no easy way to rewrite the message with the rebase
   rebasing 2:956063ac4557 "c_B1"
   $ hg up
diff --git a/tests/test-obsolete-divergent.t b/tests/test-obsolete-divergent.t
--- a/tests/test-obsolete-divergent.t
+++ b/tests/test-obsolete-divergent.t
@@ -61,6 +61,7 @@
   $ hg debugobsolete `getid A_0` `getid A_1`
   obsoleted 1 changesets
   $ hg debugobsolete `getid A_0` `getid A_2`
+  2 new content-divergent changesets
   $ hg log -G --hidden
   *  3:392fd25390da A_2
   |
@@ -120,6 +121,7 @@
   $ hg debugobsolete `getid A_0` `getid A_1`
   obsoleted 1 changesets
   $ hg debugobsolete `getid A_0` `getid A_2`
+  2 new content-divergent changesets
   $ mkcommit A_3
   created new head
   $ hg debugobsolete `getid A_2` `getid A_3`
@@ -180,6 +182,7 @@
   obsoleted 1 changesets
   $ hg debugobsolete aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa `getid A_1`
   $ hg debugobsolete `getid A_0` `getid A_2`
+  2 new content-divergent changesets
   $ hg log -G --hidden
   *  3:392fd25390da A_2
   |
@@ -250,6 +253,7 @@
   $ hg debugobsolete `getid A_0` `getid A_1`
   obsoleted 1 changesets
   $ hg debugobsolete `getid A_0` `getid A_2`
+  2 new content-divergent changesets
   $ mkcommit A_3
   created new head
   $ hg debugobsolete `getid A_1` `getid A_3`
@@ -430,6 +434,7 @@
   created new head
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg debugobsolete `getid A_5` `getid A_9`
+  4 new content-divergent changesets
   $ hg log -G --hidden
   *  10:bed64f5d2f5a A_9
   |
@@ -670,6 +675,7 @@
 
   $ rm .hg/localtags
   $ hg cleanup --config extensions.t=$TESTTMP/scmutilcleanup.py
+  2 new content-divergent changesets
   $ hg log -G -T '{rev}:{node|short} {desc} {instabilities}' -r 'sort(all(), topo)'
   @  5:1a2a9b5b0030 B2 content-divergent
   |
diff --git a/tests/test-obsolete.t b/tests/test-obsolete.t
--- a/tests/test-obsolete.t
+++ b/tests/test-obsolete.t
@@ -208,6 +208,7 @@
 Check that public changeset are not accounted as obsolete:
 
   $ hg --hidden phase --public 2
+  1 new phase-divergent changesets
   $ hg log -G
   @  5:5601fb93a350 (draft phase-divergent) [tip ] add new_3_c
   |
@@ -519,6 +520,7 @@
   $ mkcommit original_e
   $ hg debugobsolete --record-parents `getid original_d` -d '0 0'
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete | grep `getid original_d`
   94b33453f93bdb8d457ef9b770851a618bf413e1 0 {6f96419950729f3671185b847352890f074f7557} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
   $ hg log -r 'obsolete()'
@@ -583,6 +585,7 @@
   adding file changes
   added 6 changesets with 6 changes to 6 files (+1 heads)
   7 new obsolescence markers
+  1 new orphan changesets
 
 no warning displayed
 
@@ -918,7 +921,9 @@
 
   $ hg debugobsolete `getid obsolete_e`
   obsoleted 1 changesets
+  2 new orphan changesets
   $ hg debugobsolete `getid original_c` `getid babar`
+  1 new phase-divergent changesets
   $ hg log --config ui.logtemplate= -r 'phasedivergent() and orphan()'
   changeset:   7:50c51b361e60
   user:        test
@@ -1293,6 +1298,7 @@
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ echo aa > a
   $ hg amendtransient
+  1 new orphan changesets
   [1, 2]
 
 Test cache consistency for the visible filter
diff --git a/tests/test-push-checkheads-partial-C2.t b/tests/test-push-checkheads-partial-C2.t
--- a/tests/test-push-checkheads-partial-C2.t
+++ b/tests/test-push-checkheads-partial-C2.t
@@ -61,6 +61,7 @@
   created new head
   $ hg debugobsolete `getid "desc(A0)" ` `getid "desc(A1)"`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg log -G --hidden
   @  f6082bc4ffef (draft): A1
   |
diff --git a/tests/test-push-checkheads-partial-C4.t b/tests/test-push-checkheads-partial-C4.t
--- a/tests/test-push-checkheads-partial-C4.t
+++ b/tests/test-push-checkheads-partial-C4.t
@@ -61,6 +61,7 @@
   created new head
   $ hg debugobsolete --record-parents `getid "desc(A0)"`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg log -G --hidden
   @  0f88766e02d6 (draft): C0
   |
diff --git a/tests/test-push-checkheads-pruned-B2.t b/tests/test-push-checkheads-pruned-B2.t
--- a/tests/test-push-checkheads-pruned-B2.t
+++ b/tests/test-push-checkheads-pruned-B2.t
@@ -61,6 +61,7 @@
   created new head
   $ hg debugobsolete `getid "desc(A0)" ` `getid "desc(A1)"`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete --record-parents `getid "desc(B0)"`
   obsoleted 1 changesets
   $ hg log -G --hidden
diff --git a/tests/test-push-checkheads-pruned-B3.t b/tests/test-push-checkheads-pruned-B3.t
--- a/tests/test-push-checkheads-pruned-B3.t
+++ b/tests/test-push-checkheads-pruned-B3.t
@@ -61,6 +61,7 @@
   created new head
   $ hg debugobsolete --record-parents `getid "desc(A0)"`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete `getid "desc(B0)" ` `getid "desc(B1)"`
   obsoleted 1 changesets
   $ hg log -G --hidden
diff --git a/tests/test-push-checkheads-pruned-B4.t b/tests/test-push-checkheads-pruned-B4.t
--- a/tests/test-push-checkheads-pruned-B4.t
+++ b/tests/test-push-checkheads-pruned-B4.t
@@ -62,6 +62,7 @@
   created new head
   $ hg debugobsolete --record-parents `getid "desc(A0)"`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete --record-parents `getid "desc(B0)"`
   obsoleted 1 changesets
   $ hg log -G --hidden
diff --git a/tests/test-push-checkheads-pruned-B5.t b/tests/test-push-checkheads-pruned-B5.t
--- a/tests/test-push-checkheads-pruned-B5.t
+++ b/tests/test-push-checkheads-pruned-B5.t
@@ -65,6 +65,7 @@
   created new head
   $ hg debugobsolete --record-parents `getid "desc(A0)"`
   obsoleted 1 changesets
+  2 new orphan changesets
   $ hg debugobsolete `getid "desc(B0)"` `getid "desc(B1)"`
   obsoleted 1 changesets
   $ hg debugobsolete --record-parents `getid "desc(C0)"`
diff --git a/tests/test-push-checkheads-pruned-B8.t b/tests/test-push-checkheads-pruned-B8.t
--- a/tests/test-push-checkheads-pruned-B8.t
+++ b/tests/test-push-checkheads-pruned-B8.t
@@ -68,6 +68,7 @@
   created new head
   $ hg debugobsolete `getid "desc(A0)" ` `getid "desc(A1)"`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete `getid "desc(B0)" ` `getid "desc(B1)"`
   obsoleted 1 changesets
   $ hg debugobsolete --record-parents `getid "desc(B1)"`
diff --git a/tests/test-push-checkheads-superceed-A2.t b/tests/test-push-checkheads-superceed-A2.t
--- a/tests/test-push-checkheads-superceed-A2.t
+++ b/tests/test-push-checkheads-superceed-A2.t
@@ -61,6 +61,7 @@
   $ mkcommit B1
   $ hg debugobsolete `getid "desc(A0)" ` `getid "desc(A1)"`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete `getid "desc(B0)" ` `getid "desc(B1)"`
   obsoleted 1 changesets
   $ hg log -G --hidden
diff --git a/tests/test-push-checkheads-superceed-A3.t b/tests/test-push-checkheads-superceed-A3.t
--- a/tests/test-push-checkheads-superceed-A3.t
+++ b/tests/test-push-checkheads-superceed-A3.t
@@ -64,6 +64,7 @@
   $ mkcommit A1
   $ hg debugobsolete `getid "desc(A0)" ` `getid "desc(A1)"`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete `getid "desc(B0)" ` `getid "desc(B1)"`
   obsoleted 1 changesets
   $ hg log -G --hidden
diff --git a/tests/test-push-checkheads-superceed-A6.t b/tests/test-push-checkheads-superceed-A6.t
--- a/tests/test-push-checkheads-superceed-A6.t
+++ b/tests/test-push-checkheads-superceed-A6.t
@@ -70,6 +70,7 @@
   $ mkcommit B1
   $ hg debugobsolete `getid "desc(A0)" ` `getid "desc(A1)"`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete `getid "desc(B0)" ` `getid "desc(B1)"`
   obsoleted 1 changesets
   $ hg log -G --hidden
diff --git a/tests/test-push-checkheads-superceed-A7.t b/tests/test-push-checkheads-superceed-A7.t
--- a/tests/test-push-checkheads-superceed-A7.t
+++ b/tests/test-push-checkheads-superceed-A7.t
@@ -70,6 +70,7 @@
   created new head
   $ hg debugobsolete `getid "desc(A0)" ` `getid "desc(A1)"`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete `getid "desc(B0)" ` `getid "desc(B1)"`
   obsoleted 1 changesets
   $ hg log -G --hidden
diff --git a/tests/test-push-checkheads-unpushed-D2.t b/tests/test-push-checkheads-unpushed-D2.t
--- a/tests/test-push-checkheads-unpushed-D2.t
+++ b/tests/test-push-checkheads-unpushed-D2.t
@@ -65,6 +65,7 @@
   created new head
   $ hg debugobsolete `getid "desc(A0)" ` `getid "desc(A1)"`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete --record-parents `getid "desc(B0)"`
   obsoleted 1 changesets
   $ hg up 0
diff --git a/tests/test-push-checkheads-unpushed-D3.t b/tests/test-push-checkheads-unpushed-D3.t
--- a/tests/test-push-checkheads-unpushed-D3.t
+++ b/tests/test-push-checkheads-unpushed-D3.t
@@ -68,6 +68,7 @@
   created new head
   $ hg debugobsolete `getid "desc(A0)" ` `getid "desc(A1)"`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete `getid "desc(B0)" ` `getid "desc(B1)"`
   obsoleted 1 changesets
   $ hg log -G --hidden
diff --git a/tests/test-push-checkheads-unpushed-D4.t b/tests/test-push-checkheads-unpushed-D4.t
--- a/tests/test-push-checkheads-unpushed-D4.t
+++ b/tests/test-push-checkheads-unpushed-D4.t
@@ -84,6 +84,7 @@
   $ mkcommit B1
   $ hg debugobsolete `getid "desc(A0)" ` `getid "desc(A1)"`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete `getid "desc(B0)" ` `getid "desc(B1)"`
   obsoleted 1 changesets
   $ hg log -G --hidden
diff --git a/tests/test-push-checkheads-unpushed-D5.t b/tests/test-push-checkheads-unpushed-D5.t
--- a/tests/test-push-checkheads-unpushed-D5.t
+++ b/tests/test-push-checkheads-unpushed-D5.t
@@ -73,6 +73,7 @@
   created new head
   $ hg debugobsolete `getid "desc(A0)" ` `getid "desc(A1)"`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg debugobsolete `getid "desc(B0)" ` `getid "desc(B1)"`
   obsoleted 1 changesets
   $ hg log -G --hidden
@@ -107,5 +108,6 @@
   added 1 changesets with 1 changes to 1 files
   1 new obsolescence markers
   obsoleted 1 changesets
+  1 new orphan changesets
 
   $ cd ../..
diff --git a/tests/test-push-race.t b/tests/test-push-race.t
--- a/tests/test-push-race.t
+++ b/tests/test-push-race.t
@@ -1707,6 +1707,7 @@
   added 1 changesets with 1 changes to 1 files (+1 heads)
   1 new obsolescence markers
   obsoleted 1 changesets
+  1 new orphan changesets
   new changesets 720c5163ecf6
   (run 'hg heads .' to see heads, 'hg merge' to merge)
   $ hg -R ./client-other pull
@@ -1718,6 +1719,7 @@
   added 1 changesets with 1 changes to 1 files (+1 heads)
   1 new obsolescence markers
   obsoleted 1 changesets
+  1 new orphan changesets
   new changesets 720c5163ecf6
   (run 'hg heads .' to see heads, 'hg merge' to merge)
   $ hg -R ./client-racy pull
@@ -1727,6 +1729,7 @@
   adding manifests
   adding file changes
   added 1 changesets with 0 changes to 0 files
+  1 new orphan changesets
   new changesets a98a47d8b85b
   (run 'hg update' to get a working copy)
 
@@ -1792,6 +1795,7 @@
   $ hg -R client-other/ branch --force default
   marked working directory as branch default
   $ hg -R client-other/ commit -m "C-W"
+  1 new orphan changesets
   created new head
   $ ID_V=`hg -R client-other log -T '{node}\n' -r 'desc("C-V")'`
   $ ID_W=`hg -R client-other log -T '{node}\n' -r 'desc("C-W")'`
@@ -1818,6 +1822,7 @@
   remote: added 1 changesets with 0 changes to 1 files (+1 heads)
   remote: 1 new obsolescence markers
   remote: obsoleted 1 changesets
+  remote: 1 new orphan changesets
 
   $ release $TESTTMP/watchfile
 
diff --git a/tests/test-rebase-dest.t b/tests/test-rebase-dest.t
--- a/tests/test-rebase-dest.t
+++ b/tests/test-rebase-dest.t
@@ -420,6 +420,7 @@
   >     \|          # amend: I -> I2
   >      A
   > EOF
+  6 new orphan changesets
   rebasing 16:5c432343bf59 "J" (J tip)
   rebasing 3:26805aba1e60 "C" (C)
   rebasing 6:f585351a92f8 "D" (D)
diff --git a/tests/test-rebase-obsolete.t b/tests/test-rebase-obsolete.t
--- a/tests/test-rebase-obsolete.t
+++ b/tests/test-rebase-obsolete.t
@@ -182,6 +182,7 @@
 
   $ hg rebase --rev 'desc(D)' --dest 'desc(H)'
   rebasing 9:08483444fef9 "D"
+  1 new orphan changesets
   $ hg debugobsolete
   42ccdea3bb16d28e1848c95fe2e44c000f3f21b1 0 {cd010b8cd998f3981a5a8115f94f8da4ab506089} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'rebase', 'user': 'test'}
   5fddd98957c8a54a4d436dfe1da9d87f21a1b97b 5ae4c968c6aca831df823664e706c9d4aa34473d 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'rebase', 'user': 'test'}
@@ -460,6 +461,7 @@
   9:cf44d2f5a9f4 D (no-eol)
   $ hg rebase -r 8
   rebasing 8:e273c5e7d2d2 "C"
+  1 new orphan changesets
   $ hg log -G
   o  11:0d8f238b634c C
   |
@@ -582,6 +584,7 @@
   rebasing 3:32af7686d403 "D"
   rebasing 7:02de42196ebe "H"
   rebasing 9:4bde274eefcf "I" (tip)
+  1 new orphan changesets
   $ hg log -G
   @  12:acd174b7ab39 I
   |
@@ -616,12 +619,14 @@
   $ echo J > J
   $ hg add J
   $ hg commit -m J
+  1 new orphan changesets
   $ hg debugobsolete `hg log --rev . -T '{node}'`
   obsoleted 1 changesets
 
   $ hg rebase --rev .~1::. --dest 'max(desc(D))' --traceback --config experimental.rebaseskipobsolete=off
   rebasing 9:4bde274eefcf "I"
   rebasing 13:06edfc82198f "J" (tip)
+  2 new content-divergent changesets
   $ hg log -G
   @  15:5ae8a643467b J
   |
@@ -656,6 +661,7 @@
   $ echo "K" > K
   $ hg add K
   $ hg commit --amend -m "K"
+  1 new orphan changesets
   $ echo "L" > L
   $ hg add L
   $ hg commit -m "L"
@@ -664,6 +670,7 @@
   $ echo "M" > M
   $ hg add M
   $ hg commit --amend -m "M"
+  1 new orphan changesets
   $ hg log -G
   @  18:bfaedf8eb73b M
   |
@@ -702,6 +709,7 @@
   $ hg rebase -s 14 -d 17 --config experimental.rebaseskipobsolete=True
   note: not rebasing 14:9ad579b4a5de "I", already in destination as 16:fc37a630c901 "K"
   rebasing 15:5ae8a643467b "J"
+  1 new orphan changesets
 
   $ cd ..
 
@@ -732,6 +740,7 @@
   $ echo C > C
   $ hg add C
   $ hg commit -m C
+  1 new orphan changesets
   $ hg log -G
   @  4:212cb178bcbb C
   |
@@ -756,6 +765,7 @@
   $ echo D > D
   $ hg add D
   $ hg commit -m D
+  1 new orphan changesets
   $ hg --hidden strip -r 'desc(B1)'
   saved backup bundle to $TESTTMP/obsskip/.hg/strip-backup/86f6414ccda7-b1c452ee-backup.hg
   $ hg log -G
@@ -796,6 +806,7 @@
   
   $ hg debugobsolete `hg log -r 7 -T '{node}\n'` --config experimental.evolution=true
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg rebase -d 6 -r "4::"
   rebasing 4:ff2c4d47b71d "C"
   note: not rebasing 7:360bbaa7d3ce "O", it has no successor
@@ -871,6 +882,7 @@
   $ echo "bar" > foo
   $ hg add foo
   $ hg commit -m "bar foo"
+  1 new orphan changesets
   $ hg log -G
   @  14:73568ab6879d bar foo
   |
@@ -922,6 +934,7 @@
   $ hg rebase -s 10 -d 12 --config experimental.evolution.allowdivergence=True
   rebasing 10:121d9e3bc4c6 "P"
   rebasing 14:73568ab6879d "bar foo" (tip)
+  2 new content-divergent changesets
   $ hg summary
   parent: 16:61bd55f69bc4 tip
    bar foo
@@ -961,6 +974,7 @@
   $ hg commit -m "dummy change"
   $ hg debugobsolete `hg log -r ".^" -T '{node}'` `hg log -r 18 -T '{node}'` --config experimental.evolution=true
   obsoleted 1 changesets
+  1 new orphan changesets
 
   $ hg log -G -r 16::
   @  21:7bdc8a87673d dummy change
@@ -1020,6 +1034,7 @@
   >    \|
   >     a
   > EOF
+  1 new orphan changesets
   $ hg log -G -r 'a'::
   *  7:1143e9adc121 f
   |
@@ -1087,6 +1102,8 @@
   rebasing 3:a82ac2b38757 "c" (c)
   rebasing 4:76be324c128b "d" (d)
   rebasing 7:1143e9adc121 "f" (f tip)
+  1 new orphan changesets
+  2 new content-divergent changesets
   $ hg log -G -r 'a':: -T instabilities
   o  10:e1744ea07510 f
   |
@@ -1118,6 +1135,8 @@
   rebasing 3:a82ac2b38757 "c" (c)
   rebasing 4:76be324c128b "d" (d)
   rebasing 7:1143e9adc121 "f" (f tip)
+  1 new orphan changesets
+  2 new content-divergent changesets
 
   $ hg strip -r 0:
 
@@ -1136,6 +1155,7 @@
   >    \|
   >     a
   > EOF
+  1 new orphan changesets
   $ hg log -G -r 'a':
   *  8:2876ce66c6eb g
   |
@@ -1206,6 +1226,7 @@
   >  \|/
   >   A
   > EOF
+  1 new orphan changesets
 
   $ hg rebase -d B -s D
   note: not rebasing 2:b18e25de2cf5 "D" (D), already in destination as 1:112478962961 "B" (B)
@@ -1237,6 +1258,7 @@
   >  \|/
   >   A
   > EOF
+  1 new orphan changesets
 
   $ hg rebase -d B -s E
   note: not rebasing 3:7fb047a69f22 "E" (E), already in destination as 1:112478962961 "B" (B)
@@ -1268,6 +1290,7 @@
   >  \|/
   >   A
   > EOF
+  1 new orphan changesets
 
   $ hg rebase -d C -s D
   note: not rebasing 2:b18e25de2cf5 "D" (D), already in destination as 1:112478962961 "B" (B)
@@ -1302,6 +1325,7 @@
   >  \|/
   >   A
   > EOF
+  1 new orphan changesets
 
   $ hg rebase -d C -s E
   note: not rebasing 3:7fb047a69f22 "E" (E), already in destination as 1:112478962961 "B" (B)
@@ -1335,6 +1359,7 @@
   >  \|/
   >   A
   > EOF
+  1 new orphan changesets
 
   $ hg rebase -d C -b F
   rebasing 2:b18e25de2cf5 "D" (D)
@@ -1370,6 +1395,7 @@
   >  \|/
   >   A
   > EOF
+  1 new orphan changesets
 
   $ hg rebase -d C -b F
   note: not rebasing 2:b18e25de2cf5 "D" (D), already in destination as 1:112478962961 "B" (B)
@@ -1405,6 +1431,7 @@
   > | |
   > X Y
   > EOS
+  1 new orphan changesets
   $ hg rebase -r A+B+E -d F
   note: not rebasing 4:a3d17304151f "A" (A), already in destination as 0:96cc3511f894 "C" (C)
   note: not rebasing 5:b23a2cc00842 "B" (B), already in destination as 1:058c1e1fb10a "D" (D)
@@ -1423,6 +1450,7 @@
   >  /| | # replace: A -> C
   > A B C # D/D = D
   > EOS
+  1 new orphan changesets
   $ hg rebase -r A+B+D -d Z
   note: not rebasing 0:426bada5c675 "A" (A), already in destination as 2:96cc3511f894 "C" (C)
   rebasing 1:fc2b737bb2e5 "B" (B)
@@ -1453,6 +1481,7 @@
   >  /| |  # replace: B -> C
   > A B C  # D/D = D
   > EOS
+  1 new orphan changesets
   $ hg rebase -r B+A+D -d Z
   rebasing 0:426bada5c675 "A" (A)
   note: not rebasing 1:fc2b737bb2e5 "B" (B), already in destination as 2:96cc3511f894 "C" (C)
@@ -1530,6 +1559,7 @@
   $ hg rebase -r B+D1 -d E
   rebasing 1:112478962961 "B" (B)
   note: not rebasing 5:15ecf15e0114 "D1" (book D1 tip), already in destination as 2:0807738e0be9 "D2" (D2)
+  1 new orphan changesets
   $ hg log -G -T '{desc} {bookmarks}'
   @  B book
   |
@@ -1561,6 +1591,7 @@
   >  |/
   >  A
   > EOS
+  1 new orphan changesets
 
   $ eval `hg tags -T '{tag}={node}\n'`
   $ rm .hg/localtags
diff --git a/tests/test-revset2.t b/tests/test-revset2.t
--- a/tests/test-revset2.t
+++ b/tests/test-revset2.t
@@ -1636,6 +1636,8 @@
   >  \|/   |     # amend: F -> G
   >   A    A  Z  # amend: A -> Z
   > EOS
+  3 new orphan changesets
+  3 new content-divergent changesets
 
   $ hg log -r 'successors(Z)' -T '{desc}\n'
   Z
diff --git a/tests/test-show-work.t b/tests/test-show-work.t
--- a/tests/test-show-work.t
+++ b/tests/test-show-work.t
@@ -242,6 +242,7 @@
   > EOF
   $ hg debugobsolete `hg log -r 'desc("commit 2")' -T "{node}"`
   obsoleted 1 changesets
+  1 new orphan changesets
   $ hg show work --color=debug
   @  [log.changeset changeset.draft changeset.unstable instability.orphan|32f3] [log.description|commit 3]
   x  [log.changeset changeset.draft changeset.obsolete|6a75] [log.description|commit 2]
diff --git a/tests/test-split.t b/tests/test-split.t
--- a/tests/test-split.t
+++ b/tests/test-split.t
@@ -417,6 +417,7 @@
   [255]
 #else
   $ runsplit -r 1 --no-rebase >/dev/null
+  3 new orphan changesets
   $ hg bookmark
      d1                        2:b5c5ea414030
    * d2                        3:f4a0a8d004cc
@@ -459,6 +460,7 @@
   >     |
   >     A
   > EOS
+  2 new orphan changesets
   $ eval `hg tags -T '{tag}={node}\n'`
   $ rm .hg/localtags
   $ hg split $B --config experimental.evolution=createmarkers
diff --git a/tests/test-strip.t b/tests/test-strip.t
--- a/tests/test-strip.t
+++ b/tests/test-strip.t
@@ -1285,6 +1285,7 @@
   > EOF
 
   $ hg testnodescleanup --config extensions.t=$TESTTMP/scmutilcleanup.py
+  4 new orphan changesets
 
   $ rm .hg/localtags
   $ hg log -G -T '{rev}:{node|short} {desc} {bookmarks}' -r 'sort(all(), topo)'
diff --git a/tests/test-unamend.t b/tests/test-unamend.t
--- a/tests/test-unamend.t
+++ b/tests/test-unamend.t
@@ -258,6 +258,7 @@
   2 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ echo bar >> f
   $ hg amend
+  3 new orphan changesets
   $ hg rebase -s 6 -d . -q
 
   $ hg glog
@@ -285,12 +286,14 @@
   [255]
 
   $ hg unamend
+  3 new orphan changesets
 
 Trying to unamend a public changeset
 
   $ hg up -C 23
   5 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg phase -r . -p
+  1 new phase-divergent changesets
   $ hg unamend
   abort: cannot unamend public changesets
   (see 'hg help phases' for details)
diff --git a/tests/test-uncommit.t b/tests/test-uncommit.t
--- a/tests/test-uncommit.t
+++ b/tests/test-uncommit.t
@@ -190,6 +190,7 @@
   $ hg bookmark
      foo                       9:48e5bd7cd583
   $ hg uncommit
+  3 new orphan changesets
   $ hg status
   M files
   A file-abc
@@ -220,6 +221,7 @@
   $ hg bookmark
      foo                       9:48e5bd7cd583
   $ hg uncommit file-ab
+  1 new orphan changesets
   $ hg status
   A file-ab