Why the plugin host has no instance slot left: how many ids mod-host has (max, its own
declared 0 ~ N range) and how many of them are LEAKED — bypassed, un-racked, and still
holding their id because mod-host's remove command segfaults this build, so an un-rack
never returns a slot. Both numbers, because "the plugin host is full" leaves an operator
guessing while "9991 slots, 9991 of them leaked" says the fix is to restart the host.
Why the plugin host has no instance slot left: how many ids mod-host has (
max, its own declared0 ~ Nrange) and how many of them are LEAKED — bypassed, un-racked, and still holding their id because mod-host'sremovecommand segfaults this build, so an un-rack never returns a slot. Both numbers, because "the plugin host is full" leaves an operator guessing while "9991 slots, 9991 of them leaked" says the fix is to restart the host.