Display the log errors

[CLOVIS-AI]

I'm trying this lib but mysqld doesn't run.

java.lang.InterruptedException: Timeout of 30 sec exceeded while waiting for '/home/[REDACTED]/build/mysql-5.7-72787acf-7fdb-4ac7-add0-44837f9bc7a0/bin/mysqld' to complete. Collected output:

Based on this and the error messages displayed by mysqld when trying to run it manually, it looks like mysqld cannot find the datadir:

mysqld: Can't create directory '/usr/local/mysql/data/' (Errcode: 2 - No such file or directory)
2019-02-16T14:17:52.410053Z 0 [Warning] Changed limits: max_open_files: 1024 (requested 5000)
2019-02-16T14:17:52.410591Z 0 [Warning] Changed limits: table_open_cache: 431 (requested 2000)
2019-02-16T14:17:52.411676Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2019-02-16T14:17:52.412112Z 0 [ERROR] Can't find error-message file '/usr/local/mysql/share/errmsg.sys'. Check error-message file location and 'lc-messages-dir' configuration directive.
2019-02-16T14:17:52.415133Z 0 [ERROR] Aborting

To see this message, I had to run the mysqld script while the JVM was running (because it is removed at shutdown), I also needed to guess the parameters passed to mysqld. This is inconvenient.

I'd like a simple way to have this project display the error logs I just showed, which are emitted by mysqld to standard output. This would enable me to fix this much more easily.