rec: janitor work on (generated) Rust code

[omoerbeek]

Short description

Checklist

I have:

• read the CONTRIBUTING.md document
• read and accepted the Developer Certificate of Origin document, including the AI Policy, and added a "Signed-off-by" to my commits
• compiled this code
• tested this code
• included documentation (including possible behaviour changes)
• documented the code
• added or modified regression test(s)
• added or modified unit test(s)

[coveralls]

Coverage Report for CI Build 25804533255

Warning

Build has drifted: This PR's base is out of sync with its target branch, so coverage data may include unrelated changes.
Quick fix: rebase this PR. Learn more →

Coverage increased (+0.07%) to 71.14%

Details

• Coverage increased (+0.07%) from the base build.
• Patch coverage: 1 uncovered change across 1 file (1 of 2 lines covered, 50.0%).
• 6977 coverage regressions across 79 files.

Uncovered Changes

File	Changed	Covered	%
pdns/recursordist/rec-rust-lib/cxxsupport.cc	2	1	50.0%

Coverage Regressions

6977 previously-covered lines in 79 files lost coverage.

Top 10 Files by Coverage Loss	Lines Losing Coverage	Coverage
pdns/recursordist/pdns_recursor.cc	1099	46.14%
pdns/recursordist/lua-recursor4.cc	681	8.69%
pdns/recursordist/rec-main.cc	518	51.22%
pdns/recursordist/rec-tcp.cc	450	35.7%
pdns/recursordist/rec_channel_rec.cc	391	19.44%
pdns/recursordist/lwres.cc	353	38.19%
pdns/recursordist/rec-lua-conf.cc	347	19.57%
pdns/recursordist/rec-rust-lib/cxxsupport.cc	340	57.94%
pdns/recursordist/syncres.cc	336	77.32%
pdns/recursordist/rpzloader.cc	291	43.45%

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Coverage Stats

Relevant Lines:	170073
Covered Lines:	132459
Line Coverage:	77.88%
Relevant Branches:	81074
Covered Branches:	46207
Branch Coverage:	56.99%
Branches in Coverage %:	Yes
Coverage Strength:	13516139.55 hits per line

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💛 - Coveralls