diff --git a/.github/workflows/migration.yml b/.github/workflows/migration.yml
index 32c050e17f..5f439afd92 100644
--- a/.github/workflows/migration.yml
+++ b/.github/workflows/migration.yml
@@ -35,4 +35,6 @@ jobs:
       - name: Run migration test
         run: |
           export PATH="$HOME/bin:$PATH"
+          # debugging cache layers, checking which scripts are visible to CI context
+          tree deployments/compose/ deployments/scripts/
           ./deployments/scripts/migration-test v0.73.1
diff --git a/deployments/scripts/migration-test b/deployments/scripts/migration-test
index e8e57f481c..b129bf1371 100755
--- a/deployments/scripts/migration-test
+++ b/deployments/scripts/migration-test
@@ -41,12 +41,14 @@ else
     use_tui="false"
 fi
 
+set -x
+
 # Look up some git facts for logging and preparing work trees.
 repo_root="$(git rev-parse --show-toplevel)"
 worktree_dir="${repo_root}/deployments/worktrees/${target_version}"
 logs_dir="${repo_root}/deployments/logs"
 mkdir -p "$logs_dir"
-rm -f "${logs_dir}/"*".log"
+find "$logs_dir" -type f -iname 'migration*.log' -exec rm -vf {} +
 
 # Create a local git-worktree so that we can check out a prior
 # tag and build its version of tests and suchwhat.
@@ -62,6 +64,7 @@ prepare_local_worktree() {
 # run smoke tests against it from that checkout, then exit.
 function run_migration_test_phase_1() {
     >&2 echo "Running smoke-tests against pre-migration devnet, phase 1..."
+    tree deployments/compose/ deployments/scripts/
     # Override the pc API port 8080 -> 9191, to avoid conflict with pd.
     if ! process-compose \
         --config deployments/compose/process-compose-smoke-test.yml \