switch to paracord

[conradludgate]

lasso seems somewhat not very well maintained, and it has a lot of unsafe code. I started to write my own version with a lot less novel code and a lot less unsafe

[github-actions]

8019 tests run: 7636 passed, 0 failed, 383 skipped (full report)

---

Flaky tests (8)

Postgres 17

• test_compute_pageserver_connection_stress: release-arm64-without-lfc

Postgres 16

• test_location_conf_churn[3]: release-arm64-with-lfc

Postgres 15

• test_compute_pageserver_hung_connections: release-arm64-with-lfc
• test_partial_evict_tenant[relative_spare]: release-x86-64-with-lfc

Postgres 14

• test_compute_pageserver_connection_stress: release-x86-64-with-lfc
• test_compute_pageserver_hung_connections: release-arm64-with-lfc
• test_sliding_working_set_approximation: release-x86-64-with-lfc, release-arm64-with-lfc

Code coverage* (full report)

• functions: 32.2% (8688 of 26961 functions)
• lines: 48.4% (75277 of 155432 lines)

* collected from Rust tests only

---

_{The comment gets automatically updated with the latest test results
046155f at 2025-03-27T12:44:45.528Z :recycle:}