diff --git a/source/dub/commandline.d b/source/dub/commandline.d
index fc06a32..597a10e 100644
--- a/source/dub/commandline.d
+++ b/source/dub/commandline.d
@@ -1281,8 +1281,25 @@
 		enforce(free_args.length == 0, "Cleaning a specific package isn't possible right now.");
 
 		if (m_allPackages) {
-			foreach (p; dub.packageManager.getPackageIterator())
-				dub.cleanPackage(p.path);
+			bool any_error = false;
+
+			foreach (p; dub.packageManager.getPackageIterator()) {
+				try dub.cleanPackage(p.path);
+				catch (Exception e) {
+					logWarn("Failed to clean package %s at %s: %s", p.name, p.path, e.msg);
+					any_error = true;
+				}
+
+				foreach (sp; p.subPackages.filter!(sp => !sp.path.empty)) {
+					try dub.cleanPackage(p.path ~ sp.path);
+					catch (Exception e) {
+						logWarn("Failed to clean sub package of %s at %s: %s", p.name, p.path ~ sp.path, e.msg);
+						any_error = true;
+					}
+				}
+			}
+
+			if (any_error) return 1;
 		} else {
 			dub.cleanPackage(dub.rootPath);
 		}