Logrotate of /var/log/boot.log throws error about missing /var/log/boot.log.tmp

Issue

The snippet /etc/logrotate.d/bootlog causes error message:

rotating pattern: /var/log/boot.log
 forced from command line (7 rotations)
olddir is /var/log/old, empty log files are not rotated, old logs are removed
considering log /var/log/boot.log
  Now: 2021-02-17 16:03
  Last rotated at 2021-02-16 15:55
  log needs rotating
rotating log /var/log/boot.log, log->rotateCount is 7
dateext suffix '-20210217'
glob pattern '-[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]'
set default create context to system_u:object_r:plymouthd_var_log_t:s0
copying /var/log/boot.log.tmp to /var/log/old/boot.log-20210217
error: error opening /var/log/boot.log.tmp: No such file or directory
removing tmp log /var/log/boot.log.tmp
set default create context to system_u:object_r:logrotate_var_lib_t:s0