Hey,
So the debug mechanism is in place. Requesting a non-existing derivation on a worker gives: --8<---------------cut here---------------start------------->8--- mathieu@hydra-guix-104 ~$ guix build /gnu/store/yd1p7069rs4xbbfwj5p7nzp9psw7d3vv-hello-2.12.1.drv substitute: could not fetch http://141.80.167.131/yd1p7069rs4xbbfwj5p7nzp9psw7d3vv.narinfo 404 substitute: updating substitutes from 'http://141.80.167.131'... 100.0% cannot build missing derivation ‘/gnu/store/yd1p7069rs4xbbfwj5p7nzp9psw7d3vv-hello-2.12.1.drv’ guix build: error: build of `/gnu/store/yd1p7069rs4xbbfwj5p7nzp9psw7d3vv-hello-2.12.1.drv' failed --8<---------------cut here---------------end--------------->8--- as expected. The funny thing is that during the test failures of tonight, none of those traces were displayed. That would mean that the failure is not caused by a missing narinfo. I added the "--debug" option to the guix-daemon on the workers as well hoping to gather more info. Thanks, Mathieu
