$ insync-headless -v
1.5.2.37346
I’m having the same problem and maybe the memory usage is related because I found the following in logs.
[61422764.154368] Out of memory in UB 5858: OOM killed process 31759 (insync) score 0 vm:3844488kB, rss:2839248kB, swap:0kB
Once restarted, it works fine but the process memory usage increases at a rate of amount 10MB/sec and the kernel kills it.
I also noticed that if I have 7 items in the queue, only 1 will sync until I quit. When I start it up again, another item will sync and I have to continue quitting and starting for each item.