Syntax or usage error
Protocol incompatibility
Errors selecting input/output files, dirs
Requested action not supported: an attempt was made to manipulate 64-bit files on a platform that cannot support them; or an option was specified that is supported by the client and not by the server.
Error starting client-server protocol
Daemon unable to append to log-file
Error in socket I/O
Error in file I/O
Error in rsync protocol data stream
Errors with program diagnostics
Error in IPC code
Received SIGUSR1 or SIGINT
Some error returned by waitpid()
Error allocating core memory buffers
Partial transfer due to error
Partial transfer due to vanished source files
The --max-delete limit stopped deletions
Timeout in data send/receive
Timeout waiting for daemon connection
Unknown error