Add exception message to 'failed to create output directory'

It looks like all of the similar code paths in this file properly attach the exception message to the error message, while this one does not. Omitting the message makes it hard to figure out the root cause.

While there, make a minor error message string formatting improvement.

Closes #17951.

PiperOrigin-RevId: 523461253
Change-Id: I96e434d0934c26ecc696cf386362ee17a6588cc5

Author: EdSchouten

src/main/java/com/google/devtools/build/lib/skyframe/SkyframeActionExecutor.java

@@ -1304,7 +1304,8 @@ private void createActionFsOutputDirectories(
           action.getOutputs(), artifactPathResolver);
     } catch (CreateOutputDirectoryException e) {
       throw toActionExecutionException(
-          String.format("failed to create output directory '%s'", e.directoryPath),
+          String.format(
+              "failed to create output directory '%s': %s", e.directoryPath, e.getMessage()),
           e,
           action,
           null,
@@ -1346,7 +1347,7 @@ private static void setupActionFsFileOutErr(FileOutErr fileOutErr, Action action
     } catch (IOException e) {
       String message =
           String.format(
-              "failed to create output directory for output streams'%s': %s",
+              "failed to create output directory for output streams '%s': %s",
               fileOutErr.getErrorPath(), e.getMessage());
       DetailedExitCode code =
           createDetailedExitCode(message, Code.ACTION_FS_OUT_ERR_DIRECTORY_CREATION_FAILURE);