fatal error: too many address space collisions for -race mode
D0624 05:55:47.985747  338247 task_exit.go:204] [ 43878(10797): 43878(10797)] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0624 05:55:47.986039  338247 task_exit.go:204] [ 43878(10797): 43878(10797)] Transitioning from exit state TaskExitInitiated to TaskExitZombie

runtime stack:
runtime.throw({0x52b4ac?, 0x0?})
	GOROOT/src/runtime/panic.go:1047 +0x5d fp=0x7f3d83fff068 sp=0x7f3d83fff038 pc=0x12f199d
runtime.(*mheap).sysAlloc(0x28716c0, 0xc3ffffffff?, 0x2881858, 0x1)
	GOROOT/src/runtime/malloc.go:654 +0x645 fp=0x7f3d83fff0f8 sp=0x7f3d83fff068 pc=0x12c74c5
runtime.(*mheap).grow(0x28716c0, 0xc0000?)
	GOROOT/src/runtime/mheap.go:1472 +0x7f fp=0x7f3d83fff170 sp=0x7f3d83fff0f8 pc=0x12e2a3f
runtime.(*mheap).allocSpan(0x28716c0, 0xc0000, 0x0, 0xff?)
	GOROOT/src/runtime/mheap.go:1243 +0x1b7 fp=0x7f3d83fff208 sp=0x7f3d83fff170 pc=0x12e2357
runtime.(*mheap).alloc.func1()
	GOROOT/src/runtime/mheap.go:961 +0x65 fp=0x7f3d83fff250 sp=0x7f3d83fff208 pc=0x12e1e05
runtime.systemstack()
	src/runtime/asm_amd64.s:496 +0x49 fp=0x7f3d83fff258 sp=0x7f3d83fff250 pc=0x1328329