Fix JRubyCacheBackend::canUseUnsafeCHM on Android

[donv]

Avoid NullpointerException if t.getMessage() is null and detect "intrinsics" message in causing exception.
Both of these occur on Android.

[jdantonio]

Thank you!

[donv]

Hi @jdantonio !

Could you release this change or make it possible to use master from GitHub with JRuby?

What is needed for using master directly in a Gemfile with JRuby is a precompiled JAR or a build step to compile the jar after checkout (using extconf, I think).

[jdantonio]

@donv It's been almost a year since the last release so I think a new release is warranted. I'll check with the team to make sure everyone is OK with that.

[donv]

Thanks!

[thedarkone]

From me it's: 🚢 .

[jdantonio]

@donv I'm updating the project config (TravisCI, Coveralls, etc.) in #11. Once that's all working properly I'll create the next release. Probably tomorrow. Definitely this week.

[donv]

@jdantonio Thanks! Appreciated 😄

[jdantonio]

@donv I've released v0.3.5 with this patch. This is the first time I've pushed an update to this gem so please let me know ASAP of you have any issues!

[donv]

I ran our tests with the new version, and I got an error. I will investigate, but it is hard to trace these errors, so it will take some time.

The visible error is

load error: fileutils -- java.lang.ArrayIndexOutOfBoundsException: length=256; index=1115438672

but that is likely a result of another error. I'll keep you informed.