Unable to commit 17955815424 bytes (18 GB) of memory when compiling GHC

Summary

Attempted to commit 18GB of memory when building GHC (using Hadrian).

Steps to reproduce

What I did when it happened:

git clone git@gitlab.haskell.org:ghc/ghc.git
cd ghc
git submodule update --init --recursive

./boot
./configure
cabal new-install happy
./configure
cabal new-install alex
./configure

hadrian/build.sh
^C # Max 10 seconds into build
hadrian/build.sh -j

Attempting to run hadrian/build.sh -j again froze GNOME.

Attempting to run hadrian/build.sh -j again (this time in a virtual terminal and with tee) resulted in a strange closure type error (copied by hand because ... virtual terminal):

ghc: internal error: evacuate: strange closure type 4325413

Log (excluding error because I forgot 2>&1):

Yet another attempt (this time no longer in a virtual terminal): log.txt

By now it seems like the working directory might be corrupt. Reverting to the .tar.gz file from after the first attempt and running hadrian/build.sh -j again, resulted in a yet another error: txt.txt

git cloneing the repository again and running boot, configure, and hadrian/build.sh -j resulted in log.txt.

Expected behavior

Not crashing

Relevant information

• GHC installed using ghcup
• Happy and Alex installed using cabal new-install
• 4 cores, 7~8 GB of memory
• Build took 44 minutes before crashing
• Log (as far back as my terminal goes): log.txt or gist
• I have a .tar.gz of the working directory after the original attempt, but it is too large to attach (787 MiB).

Environment

• GHC version used: 8.8.1
• Operating System: Ubuntu 19.10
• System Architecture: 64 bit