Created attachment 6567 build log See build log attached.
I'm sorry. I was really really sure that g_hash_table_insert() would return a gboolean but I was wrong. Rewrote it with 9a7a73d917750d8e741c8f63f23961a6fcc3ed89 Please cherry-pick commit 9a7a73d917750d8e741c8f63f23961a6fcc3ed89 for packaging.
Is built nice now. Thank you!