I did not find an upstream report about this, but having tracing for the failure is tracked in https://jira.mariadb.org/browse/MDEV-30629
- Bug#1029164: Acknowledgement (mariadb: FTBFS on mipsel, ... Otto Kekäläinen
- Bug#1029164: Acknowledgement (mariadb: FTBFS on mip... Otto Kekäläinen