cbc spuriously fails with exit code -9

[ssche]

On a CI server which runs multiple cbc jobs in parallel cbc sometimes fails with exit code -9. The call is

/usr/local/bin/cbc ./36fab832bbc34c43a2b0da738a714349-cbc.mps max presolve on ratio 0.01 randomCbcSeed 42 randomSeed 42 allow 1 maxN 80000 branch printingOptions all solution ./36fab832bbc34c43a2b0da738a714349-cbc.sol

and all input files and the cbc binary exist. On other CI runs, the same setup completes successfully. I don't know what the reason may be and was hoping someone could shed some light on the exit code (-9). Is there an overview about exit codes?

[misyntropy]

https://stackoverflow.com/questions/40888164/c-program-crashes-with-exit-code-9-sigkill and https://stackoverflow.com/questions/18529452/what-does-a-python-process-return-code-9-mean and https://discourse.mc-stan.org/t/meaning-of-retcodes-9/21751/2 are useful here. This is just an out of memory error.