A process trying to allocate more memory than available is being killed by the Out-of-Memory Killer on Linux with a short message: Killed
https://www.instana.com/blog/solving-the-out-of-memory-killer-puzzle/
https://aegif.jp/alfresco/tech-info/-/20201119-alfresco/1.3
https://stackoverflow.com/questions/26334151/getting-killed-message-in-python-is-memory-the-issue
https://unix.stackexchange.com/questions/614950/python-programs-suddenly-get-killed