Back out "upgrade to 0.22.6"

Summary:
This diff is backing out: D68466072, D68679908, D68679909, D68687706, D68687707, D68693388, D68780982 and D68784256

ignore-conflict-markers
overriding_review_checks_triggers_an_audit_and_retroactive_review
Oncall Short Name: rust_foundation

Differential Revision: D68813766

fbshipit-source-id: 465aafc89916c5d730e7c12ead4850d36501f455

Cargo.toml

@@ -12,6 +12,7 @@ lru-disk-cache = { git = "https://github.com/mozilla/sccache", rev = "fdbf843d17
 perf-event = { version = "0.4", git = "https://github.com/krallin/perf-event.git", rev = "86224a9bc025d5d19f719542f27c8c629a08b167" }
 perf-event-open-sys = { version = "4.0", git = "https://github.com/krallin/perf-event.git", rev = "86224a9bc025d5d19f719542f27c8c629a08b167" }
 profiling = { version = "1.0.16", git = "https://github.com/aclysma/profiling.git", rev = "1b3e20c8e59eddbb6ae0d64fff849d07a903dd0c" }
+pyo3-build-config = { package = "pyo3-build-config", version = "0.21.2", git = "https://github.com/fbsource/pyo3", rev = "ff94a09031cc29d88d57ae3c846e5b871497aeb9" }
 quickcheck = { git = "https://github.com/jakoschiko/quickcheck", rev = "6ecdf5bb4b0132ce66670b4d46453aa022ea892c" }
 tree-sitter-bash = { git = "https://github.com/cfsmp3/tree-sitter-bash", rev = "4e9968457cd1ee5a51f8ab875cc2fcaaf7294e94" }
 tree-sitter-c = { git = "https://github.com/cfsmp3/tree-sitter-c", rev = "d01f584b67e581e9888b4b8e71e7150fd3867e38" }