dub couldn't resolve dependency

[drug007]

with dub run grain --config=example-mnist -b=release -v I get:

...
Package mir-random contains invalid dependency mir-math (no version candidates) (ci=8)
Package mir-random contains invalid dependency mir-math (no version candidates) (ci=8)
Package mir-random contains invalid dependency mir-math (no version candidates) (ci=8)
Package mir-random contains invalid dependency mir-math (no version candidates) (ci=8)
Package mir-random contains invalid dependency mir-math (no version candidates) (ci=8)
Package mir-random contains invalid dependency mir-math (no version candidates) (ci=8)

without -v dub prints:

The dependency resolution process is taking too long. The dependency graph is likely hitting a pathological case in the resolution algorithm. Please file a bug report at https://github.com/dlang/dub/issues and mention the package recipe that reproduces this error.

[ShigekiKarita]

Thanks for report. Did you even get dub.selection.json? Could you upload it here?

[ShigekiKarita]

I just have made Travis CI build examples. It seems to success. These dub.selections.json might help you

• ldc1.12.0 https://travis-ci.org/ShigekiKarita/grain/jobs/459560385#L745
• dmd2.083.0 https://travis-ci.org/ShigekiKarita/grain/jobs/459560386#L1990

[drug007]

I can not upload dub.selection.json because dub can not create it. I tried with dub.selection.json from travis build without success. I use dmd 2.081, probably this is the reason?