I just downloaded the latest binary release for Linux from the github page here.

The version is reported as:

jruby 10.0.3.0 (3.4.5) 2026-02-02 b0be2ab713 OpenJDK 64-Bit Server VM 25.0.1+8-jvmci-b01 on 25.0.1+8-jvmci-b01 [x86_64-linux]

On the commandline. (I actually thought I had GraalVM in use; not sure right now, need to check this after filing this issue report.)

Oddly enough I get this strange error:

Error occurred during CDS dumping
Cannot have non-empty directory in paths

I don't know what this error message means.

But, may I make a suggestion here: the "cannot have non-empty directory in paths"
is not that helpful. Could it be shown which path is meant exactly? I am also uncertain
why non-empty directories are a problem. Is this new? I don't recall this being reported
in the past. Right now I am not sure what to do with this; first I have to check on my local
java installation too. (I typically symlink things, perhaps this is confusing jruby.) Either
way I think the notification is a bit weird, but it could be made better by adding an
additional message such as:

/tmp/garfield/ is non-empty. # or empty ... or whatever the message is trying to convey

That way I, as the user, could look at that directory and perhaps remove it and have
jruby work. Or perhaps it is just a warning but then why is this given. Is it an important
notification actually?

Edit: So jruby appears to work fine, I just tested hello_world.rb and it works. It only outputs
those two lines afterwards:

Error occurred during CDS dumping
Cannot have non-empty directory in paths

So it is probably harmless, but I think older jruby did not show that behaviour. Or at the least I may not have noticed it; I manage to end up breaking my own systems all of the time so my own memory
my fail me here, but I am pretty certain I did not have this issue with older jruby version. I may
test some of them soon.