The first time I ran go-1.14rc1 on a stock Debian system, I got:

    runtime: mlock of signal stack failed: 12
    runtime: increase the mlock limit (ulimit -l) or
    runtime: update your kernel to 5.3.15+, 5.4.2+, or 5.5+
    fatal error: mlock failed

ulimit -l is at 64, which is also the hard limit.

After opening a new shell, I can no longer reproduce the issue --
everything appears to be working fine.  Still, I find this heisenbug
somewhat disturbing.

-- Juliusz

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