jemalloc may need to be updated to the upstream version.

Tue May 18 16:11:14 UTC 2021

In certain cases, jemalloc causes the program to panic.

https://github.com/jemalloc/jemalloc/commit/eaed1e39be8574b1a59d21824b68e31af378cd0f

Should the jemalloc version be updated to the latest version of the 
github? It looks like the new version introduces some fixes.

Jemalloc hasn't released a new version in three years. Its update 
appears to be done only in the dev branch.