fatal error: newosproc

runtime stack:
runtime.throw(0xdb3712, 0x9)
	GOROOT/src/runtime/panic.go:774 +0x72
runtime.newosproc(0xc0000fa380)
	GOROOT/src/runtime/os_linux.go:153 +0x1ba
runtime.newm1(0xc0000fa380)
	GOROOT/src/runtime/proc.go:1853 +0xdc
runtime.newm(0xde4b78, 0xc000034000)
	GOROOT/src/runtime/proc.go:1832 +0x8f
runtime.startm(0x0, 0xc000036501)
	GOROOT/src/runtime/proc.go:1969 +0x12a
runtime.wakep(...)
	GOROOT/src/runtime/proc.go:2050
runtime.resetspinning()
	GOROOT/src/runtime/proc.go:2430 +0x93
runtime.schedule()
	GOROOT/src/runtime/proc.go:2531 +0x2a0
runtime.park_m(0xc000001980)
	GOROOT/src/runtime/proc.go:2610 +0x9d
runtime.mcall(0x0)
	src/runtime/asm_amd64.s:318 +0x5b