Brew Install hanging up on openJDK

Nobody has claimed this yet.

Not sure what I'm doing wrong, tried a few times to install and it gets stuck and eventually errors when trying to install openjdk:

🍺 /usr/local/Cellar/m4/1.4.18: 13 files, 631.3KB, built in 1 minute 33 seconds
==> Installing jakewharton/repo/plex-orphaned-files dependency: autoconf
==> ./configure --prefix=/usr/local/Cellar/autoconf/2.71 --with-lispdir=/usr/local/Cellar/autoconf/2.71/share/emacs/site-lisp/autoconf
==> make install
🍺 /usr/local/Cellar/autoconf/2.71: 75 files, 3.2MB, built in 16 seconds
==> Installing jakewharton/repo/plex-orphaned-files dependency: openjdk
==> ./configure --disable-warnings-as-errors --with-boot-jdk-jvmargs=-Duser.home=/Users/JeffEd/Library/Caches/Homebrew/java_cache --with-boot-jdk=/private/tmp/openjdk-20210608-29156-1swk0p1/jdk16u-jdk-16.0.1-
==> make images
Last 15 lines from /Users/[myusername]/Library/Logs/Homebrew/openjdk/02.make:
watchos(1.0, API_TO_BE_DEPRECATED),
^
/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/System/Library/Frameworks/Security.framework/Headers/SecTrust.h:357:47: error: expected a version of the form 'major[.minor[.subminor]]'
tvos(2.0, API_TO_BE_DEPRECATED));
... (rest of output omitted)

* All command lines available in /private/tmp/openjdk-20210608-29156-1swk0p1/jdk16u-jdk-16.0.1-ga/build/macosx-x86_64-server-release/make-support/failure-logs.
=== End of repeated output ===

No indication of failed target found.
Hint: Try searching the build log for '] Error'.
Hint: See doc/building.html#troubleshooting for assistance.

make[1]: *** [main] Error 2
make: *** [images] Error 2

Do not report this issue to Homebrew/brew or Homebrew/core!

These open issues may also help:
OpenJDK is somewhat broken on newer MacOS instances, console is flooded with errors when using JMeter, AdoptOpenJDK has no issues https://github.com/Homebrew/homebrew-core/issues/66953

Error: You are using macOS 10.13.
We (and Apple) do not provide support for this old version.
You will encounter build failures with some formulae.
Please create pull requests instead of asking for help on Homebrew's GitHub,
Twitter or any other official channels. You are responsible for resolving
any issues you experience while you are running this
old version.

Start with the Homebrew log at /Users/[myusername]/Library/Logs/Homebrew/openjdk/02.make and the referenced doc/building.html troubleshooting section. Check whether the failure is specific to the project's installation or to unsupported macOS 10.13 tooling; done means producing an actionable project-level fix or a clear, documented explanation that no project change is warranted.

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