packed_simd version 0.3.3 fails to compile on recent nightly compilers and, transitively, so do releases of curve25519-dalek that use that version (https://github.com/dalek-cryptography/curve25519-dalek/issues/333). This has been fixed in their develop branch. The next release (probably 3.1.0) should include the fix (and then a new version of this package using it should be published), but until then, I've pinned curve25519-dalek to the commit fixing the issue.
packed_simdversion0.3.3fails to compile on recent nightly compilers and, transitively, so do releases ofcurve25519-dalekthat use that version (https://github.com/dalek-cryptography/curve25519-dalek/issues/333). This has been fixed in theirdevelopbranch. The next release (probably3.1.0) should include the fix (and then a new version of this package using it should be published), but until then, I've pinnedcurve25519-dalekto the commit fixing the issue.