I haven't used kubectl in about two months. It was working well in June but now I get the following error:

$ kubectl
fatal error: runtime: bsdthread_register error

runtime stack:
runtime.throw(0x2cb65a5, 0x21)
    /usr/local/go/src/runtime/panic.go:596 +0x95 fp=0x7fff5fbff810 sp=0x7fff5fbff7f0
runtime.goenvs()
    /usr/local/go/src/runtime/os_darwin.go:108 +0xa0 fp=0x7fff5fbff840 sp=0x7fff5fbff810
runtime.schedinit()
    /usr/local/go/src/runtime/proc.go:486 +0xa1 fp=0x7fff5fbff880 sp=0x7fff5fbff840
runtime.rt0_go(0x7fff5fbff8b0, 0x1, 0x7fff5fbff8b0, 0x0, 0x1, 0x7fff5fbffa38, 0x0, 0x7fff5fbffa40, 0x7fff5fbffa5c, 0x7fff5fbffa6c, ...)
    /usr/local/go/src/runtime/asm_amd64.s:158 +0x183 fp=0x7fff5fbff888 sp=0x7fff5fbff880

I've read that this can be caused by websense but I don't have websense installed on my Mac. The only thing that has changed to my knowledge was a routine update to Max OSX (10.12.6), and a routine update to gcloud (163).

I've tried reinstalling kubectl, gcloud, but it still fails. As far as I can tell there is something wrong with Go, and I think Go is part of the core library included in gcloud sdk.

Any ideas on how to troubleshoot/fix this? I cannot connect to any of my pods due to this issue.