diff --git a/.buildkite/hooks/post-checkout b/.buildkite/hooks/post-checkout
index 2e40938cd9..1a680832ce 100644
--- a/.buildkite/hooks/post-checkout
+++ b/.buildkite/hooks/post-checkout
@@ -33,3 +33,10 @@ source ci/env.sh
     kill -9 "$victim" || true
   done
 )
+
+# HACK: These are in our docker images, need to be removed from CARGO_HOME
+#  because we try to cache downloads across builds with CARGO_HOME
+# cargo lacks a facility for "system" tooling, always tries CARGO_HOME first
+cargo uninstall cargo-audit || true
+cargo uninstall svgbob_cli || true
+cargo uninstall mdbook || true
diff --git a/ci/test-checks.sh b/ci/test-checks.sh
index dabeb95d8e..8b28601976 100755
--- a/ci/test-checks.sh
+++ b/ci/test-checks.sh
@@ -13,9 +13,9 @@ export RUSTFLAGS="-D warnings"
 do_bpf_check() {
         _ cargo +"$rust_stable" fmt --all -- --check
         _ cargo +"$rust_nightly" test --all
-        _ cargo +"$rust_nightly" clippy --all -- --version
+        _ cargo +"$rust_nightly" clippy --version
         _ cargo +"$rust_nightly" clippy --all -- --deny=warnings
-#        _ cargo +"$rust_stable" audit
+        _ cargo +"$rust_stable" audit
 }
 
 (
@@ -40,9 +40,10 @@ do_bpf_check() {
 )
 
 _ cargo +"$rust_stable" fmt --all -- --check
-_ cargo +"$rust_stable" clippy --all -- --version
+_ cargo +"$rust_stable" clippy --version
 _ cargo +"$rust_stable" clippy --all -- --deny=warnings
-#_ cargo +"$rust_stable" audit
+_ cargo +"$rust_stable" audit --version
+_ cargo +"$rust_stable" audit --ignore RUSTSEC-2019-0011 # https://github.com/solana-labs/solana/issues/5207
 _ ci/nits.sh
 _ ci/order-crates-for-publishing.py
 _ book/build.sh