fix to pass bench/shootout-k-nucleotide-pipes.rs on android

[yichoi]

To enable test on android bot #9120

It is not fininshed on android

[huonw]

Would it be possible to give more details about why these tests are failing? (e.g. pasted output.)

[yichoi]

no console output but hanging forever. is there other way to generate output ?

[huonw]

@yichoi that's good, just some description of the exact issue. For example, so that people triaging later know what they're looking for to work out if a bug is fixed or not.

[flaper87]

Triage bump: The tests are still being ignored for android.