OctoPack - Why is this not a valid version string?

[jkodroff]

When I try to call OctoPack with a package version of "1.0.2897-3932.octopus.deploy", I get the following error:

MSBUILD : OctoPack error OCTONUGET: '1.0.2897-3932.octopus.deploy' is not a valid version string. 
...
MSBUILD : OctoPack error OCT-1676060969: There was an error calling NuGet. Please see the output above for more details. 

If I understand Rule 9 in the Semver Spec correctly, my version number should be valid. Is this an error in OctoPack?

[jkodroff]

Turns out, it is a valid string, but only for SemVer 2.0. NuGet only supports SemVer 1.0, which does not allow .-separated pre-release identifiers, which is a major bummer for me. Thus, this is not an OctoPack issue: OctoPack is complying with the NuGet spec.

There is an open issue with NuGet on getting full SemVer 2.0 support.

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