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runtime: fatal error: MHeap_AllocLocked - MSpan not free #17412
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What version of Go are you using (
As it turns out, it does have a race. It is strange where it happens, though. We use singleflight to serialize access to our API login call.
WARNING: DATA RACE
Previous read at 0x00c4201ee270 by goroutine 70:
Goroutine 243 (running) created at:
Goroutine 70 (running) created at: