On Fri, Jul 22, 2016 at 10:59:38PM +0200, Ludovic Courtès wrote: > lpsolve https://hydra.gnu.org/build/1248528
>From the failing build log: In unknown file: ?: 0 [copy-file "lpsolve55/bin/ux64/liblpsolve55.a" ...] ERROR: In procedure copy-file: ERROR: In procedure copy-file: No such file or directory It's strange, because lpsolve is the same package on master and core-updates, and I can build it from master. Did (copy-file) change? Could there be some issue with the underlying operating system? Or am I misreading the backtrace?