[Bug 285963] lang/go* fail to build on the amd64 package builders

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=285963

Danilo G. Baio <dbaio@freebsd.org> changed:

           What    |Removed                     |Added
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                 CC|                            |dbaio@freebsd.org

--- Comment #27 from Danilo G. Baio <dbaio@freebsd.org> ---
Hi,

Antoine said the other day that he is seeing this only in the newer builders,
so I ran these tests to collect evidence, no jails/poudriere involved, just
trying to build lang/go121 directly on the hosts.


gohan06 (Newer builder):
  FreeBSD gohan06.chi.freebsd.org 15.0-CURRENT FreeBSD 15.0-CURRENT #0
main-n276176-6091e2aa9236: Mon Mar 31 09:41:59 UTC 2025
  CPU: Intel(R) Xeon(R) Silver 4314 CPU @ 2.40GHz (2400.00-MHz K8-class CPU)

  error: https://people.freebsd.org/~dbaio/go/go121-gohan06-logs.txt


beefy19 (Not so old builder):
  FreeBSD beefy19.nyi.freebsd.org 15.0-CURRENT FreeBSD 15.0-CURRENT #0
main-n276176-6091e2aa9236: Mon Mar 31 09:41:59 UTC 2025
  CPU: Intel(R) Xeon(R) Silver 4214 CPU @ 2.20GHz (2200.00-MHz K8-class CPU)

  it works: https://people.freebsd.org/~dbaio/go/go121-beefy19-logs.txt


My steps:

```
as root:
# pkg install bsddialog portconfig

as single user:
$ export PORT_DBDIR=/home/dbaio/tmp/db

$ git clone https://git.freebsd.org/ports.git
$ cd ports/lang/go121
$ make stage
```

Both builders' hosts run the same version; they have the same packages, etc.
One works, and the other doesn't.
The main difference is the CPU.

Does that make sense?

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