[Bug 259799] devel/rust-cbindgen: armv6: build using "make" fails, using "cargo build --release -j 1" works

From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 13 Nov 2021 10:08:43 UTC

--- Comment #27 from Mark Millard <marklmi26-fbsd@yahoo.com> ---
(In reply to Martin Birgmeier from comment #26)

Remember that my test context goes back to /usr/ports as

# ~/fbsd-based-on-what-commit.sh 
branch: main
merge-base: faf17873c10627379554b4c5f7a66539b347f221
merge-base: CommitDate: 2021-10-23 21:38:18 +0000
faf17873c106 (HEAD -> main, freebsd/main, freebsd/HEAD)
lang/gnatdroid-binutils: Add CPE information
n563214 (--first-parent --count for merge-base)

It turns out that a rustc.core file was generated and gdb reports:

Core was generated by `/usr/local/bin/rustc --crate-name trust_dns_proto
--edition=2018 /wrkdirs/usr/po'.

but the rustc in my environment is not a debug build and I do not get a
reasoonable backtrace to report.

(I do not now that a 32-bit debug-build of rustc is even possible. I'm
not even sure for 64-bit aarch64.)

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