[crac] RFR: 8370888: [CRaC] Use better source of random for UUID generation in checkpoint path

[Radim Vansa]

On Thu, 30 Oct 2025 14:36:03 GMT, Timofei Pushkin <tpushkin at openjdk.org> wrote:

> A test failed and it looks like it should rely on random to generate random directory names — can be related to the change somehow

Which test should that be? The `java/lang/ProcessBuilder/Basic.java` failure on macos-aarch64 seems to be caused by `TMPDIR` envvar being injected (looking into this, it already failed twice so it does not seem like just a coincidence).

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PR Comment: https://git.openjdk.org/crac/pull/271#issuecomment-3472177166