Pull all the Rust BPF tests into a single workspace so they share dependencies (#5878)

ci/test-checks.sh

@@ -24,16 +24,19 @@ _ ci/nits.sh
 _ ci/order-crates-for-publishing.py
 _ book/build.sh
 
-for project in programs/bpf/rust/*/ ; do
-  echo "+++ do_bpf_check $project"
-  (
-    cd "$project"
-    _ cargo +"$rust_stable" fmt --all -- --check
-    _ cargo +"$rust_nightly" test --all
-    _ cargo +"$rust_nightly" clippy --version
-    _ cargo +"$rust_nightly" clippy --all -- --deny=warnings
-    _ cargo +"$rust_stable" audit
-  )
-done
+{
+  cd programs/bpf
+  _ cargo +"$rust_stable" audit
+  for project in rust/*/ ; do
+    echo "+++ do_bpf_checks $project"
+    (
+      cd "$project"
+      _ cargo +"$rust_stable" fmt -- --check
+      _ cargo +"$rust_nightly" test
+      _ cargo +"$rust_nightly" clippy --version
+      _ cargo +"$rust_nightly" clippy -- --deny=warnings
+    )
+  done
+}
 
 echo --- ok