Fossil SCM

Not sure if this should go here or in the mail-list, but I've encountered the following problem:

C:\test>fossil new test.fossil && fossil open test.fossil
project-id: 0ee562040ef8d3f09796012b3a2695a6f6be535f
server-id:  f2268a01c5c2ca258f893483398f677e26d12743
admin-user: User (initial password is "62d5e3")

C:\test>echo A>foo.txt && fossil add foo.txt
ADDED  foo.txt

C:\test>fossil ci -m "Added foo.txt"
New_Version: 77476f7b51d992410a2e5c29bbecd3407d642fc5

C:\test>echo B>foo.txt

C:\test>fossil ci -m "Branching off the trunk" --private
New_Version: b3311a70dbc8c5584373300f6a64e60d57e63c32

C:\test>echo C>foo.txt && fossil ci -m "Working"
New_Version: 43453f074f5f874d1dd65f494282f99972864404

C:\test>move foo.txt bar.txt && fossil mv foo.txt bar.txt
RENAME foo.txt bar.txt

C:\test>fossil ci -m "Renaming"
New_Version: e079ebf753cb630acfab51c272ef5a915a63d1bd

C:\test>echo D>foo.txt && fossil add foo.txt
ADDED  foo.txt

C:\test>fossil ci -m "Adding (new) foo.txt"
New_Version: 99c5b0ffa3f88a38bea6d0f7323669122c3e0c54

C:\test>fossil co trunk
foo.txt

C:\test>fossil merge private
UPDATE foo.txt
RENAME foo.txt -> bar.txt
"fossil undo" is available to undo changes to the working checkout.

C:\test>fossil ci -m "Private changes"
New_Version: acf09654a00da5ee5633ce90d32d27332b95668e

C:\test>fossil ls
bar.txt

then foo.txt was restored from an extrenal source (same version as in private brunch) because I had no time to check what was happened; and now I cannot merge at all:

C:\test>fossil ci -m "Added back foo.txt"
New_Version: 310e7a6762e0e1df88f5b9e21d560ce77e6c2d83

C:\test>fossil co private
bar.txt
foo.txt

C:\test>echo E>foo.txt && fossil ci -m "WIP"
New_Version: f7edf6d1669aa61b88630bd10a657099d25cd2e3

C:\test>fossil co trunk
bar.txt
foo.txt

C:\test>fossil merge -n private
MERGE bar.txt
MERGE foo.txt
***** 1 merge conflicts in foo.txt
RENAME foo.txt -> bar.txt
C:\WINDOWS\system32\fossil.exe: SQLITE_CONSTRAINT: abort at 37 in [UPDATE vfile SET pathname='bar.tx
t', origname=coalesce(origname,pathname) WHERE id=8 AND vid=12]: columns pathname, vid are not uniqu
e
C:\WINDOWS\system32\fossil.exe: columns pathname, vid are not unique
UPDATE vfile SET pathname='bar.txt', origname=coalesce(origname,pathname) WHERE id=8 AND vid=12

If you have recently updated your fossil executable, you might
need to run "fossil all rebuild" to bring the repository
schemas up to date.
C:\WINDOWS\system32\fossil.exe: SQLITE_BUSY: statement aborts at 2: [ROLLBACK] cannot rollback trans
action - SQL statements in progress

Was it my fault or is it a bug? What should I do now to continue working with this repository?