MultiCauseIOException fails on errorprone

[mosesn]

On master

[INFO] -------------------------------------------------------------
[WARNING] COMPILATION WARNING :
[INFO] -------------------------------------------------------------
[WARNING] /Users/moses/projects/ch.vorburger.exec/src/main/java/ch/vorburger/exec/MultiCauseIOException.java:[41,33] non-transient instance field of a serializable class declared with a non-serializable type
[INFO] 1 warning
[INFO] -------------------------------------------------------------
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] /Users/moses/projects/ch.vorburger.exec/src/main/java/ch/vorburger/exec/MultiCauseIOException.java: warnings found and -Werror specified
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------

[vorburger]

Huh?! I'm ... very stunned why I'm neither seeing this locally with ./mvnw clean test nor on CI.

The Continous Integration of the master branch is green & passes (note the green tick mark).

See https://github.com/vorburger/ch.vorburger.exec/actions/runs/4974375147/jobs/8900782436.

You seem to know what you are doing, but are you 100% sure you have a pristine local version, without any local changes, with the exact same dependencies from Maven, and not e.g. something "dirty" (different) in your local Maven repo. Because that's the only logical explanation - that I can think of.

Shout if you can think of any other reason why we would have such a discrepancy.

Or could this be related to JDK version? I run OpenJDK 17 locally, and then CI is on Java 11 (even though we are enforcing Java 8 source and target and API). But no, that actually can't be - Error Prone won't even run on Java 8.

I'm honestly at a loss about what be causing this for you!

[mosesn]

Ah, I think I spotted it. I'm on Java 19 locally. Looks like this was added in Java 18.

https://bugs.openjdk.org/browse/JDK-8274336

[vorburger]

Oh! How about we simply entirely disable the Lint category for Serializable in the pom.xml? (I think Serializable is irrelevant nowadays.) If you know how, do you want to raise a PR?

[vorburger]

25dd04c just fixed this!

@mosesn heads-up FYI #187 ...