Make test-checks.sh helpful and cargo-for-all-lock-files.sh useful (#10906)

ci/test-checks.sh

@@ -36,8 +36,9 @@ if [[ $CI_BASE_BRANCH = "$EDGE_CHANNEL" ]]; then
     true
   else
     check_status=$?
-    echo "Some Cargo.lock might be outdated; update them (or just be a compilation error?)"
-    echo "protip: you can use ./scripts/cargo-for-all-lock-files.sh [check|update] ..."
+    echo "$0: Some Cargo.lock might be outdated; sync them (or just be a compilation error?)" >&2
+    echo "$0: protip: $ ./scripts/cargo-for-all-lock-files.sh [--ignore-exit-code] ... \\" >&2
+    echo "$0:   [tree (for outdated Cargo.lock sync)|check (for compilation error)|update -p foo --precise x.y.z (for your Cargo.toml update)] ..." >&2
     exit "$check_status"
   fi
 else

scripts/cargo-for-all-lock-files.sh

@@ -8,6 +8,9 @@ while [[ -n $1 ]]; do
     escape_marker=found
     shift
     break
+  elif [[ $1 = "--ignore-exit-code" ]]; then
+    ignore=1
+    shift
   else
     shifted_args+=("$1")
     shift
@@ -33,9 +36,17 @@ for lock_file in $files; do
   if [[ -n $CI ]]; then
     echo "--- [$lock_file]: cargo " "${shifted_args[@]}" "$@"
   fi
-  (
-    set -x
-    cd "$(dirname "$lock_file")"
-    cargo "${shifted_args[@]}" "$@"
-  )
+
+  if (set -x && cd "$(dirname "$lock_file")" && cargo "${shifted_args[@]}" "$@"); then
+    # noop
+    true
+  else
+    failed_exit_code=$?
+    if [[ -n $ignore ]]; then
+      echo "$0: WARN: ignoring last cargo command failed exit code as requested:" $failed_exit_code
+      true
+    else
+      exit $failed_exit_code
+    fi
+  fi
 done