For the record, Here's the relevant error message when building newer mender-artifact (3.7.0) with older dependencies from unstable:
``` # github.com/mendersoftware/mender-artifact/artifact/gcp src/github.com/mendersoftware/mender-artifact/artifact/gcp/signer.go:81:3: unknown field 'DigestCrc32C' in struct literal of type "google.golang.org/genproto/googleapis/cloud/kms/v1".AsymmetricSignRequest src/github.com/mendersoftware/mender-artifact/artifact/gcp/signer.go:86:12: result.VerifiedDigestCrc32C undefined (type *"google.golang.org/genproto/googleapis/cloud/kms/v1".AsymmetricSignResponse has no field or method VerifiedDigestCrc32C) src/github.com/mendersoftware/mender-artifact/artifact/gcp/signer.go:89:41: result.SignatureCrc32C undefined (type *"google.golang.org/genproto/googleapis/cloud/kms/v1".AsymmetricSignResponse has no field or method SignatureCrc32C) src/github.com/mendersoftware/mender-artifact/artifact/gcp/signer.go:140:47: response.PemCrc32C undefined (type *"google.golang.org/genproto/googleapis/cloud/kms/v1".PublicKey has no field or method PemCrc32C) dh_auto_build: error: cd obj-x86_64-linux-gnu && go install -trimpath -v -p 5 -ldflags "-X github.com/mendersoftware/mender-artifact/cli.Version=3.7.0+ds1-1" github.com/mendersoftware/mender-artifact github.com/mendersoftware/mender-artifact/areader github.com/mendersoftware/mender-artifact/artifact github.com/mendersoftware/mender-artifact/artifact/gcp github.com/mendersoftware/mender-artifact/artifact/stage github.com/mendersoftware/mender-artifact/awriter github.com/mendersoftware/mender-artifact/cli github.com/mendersoftware/mender-artifact/cli/util github.com/mendersoftware/mender-artifact/handlers github.com/mendersoftware/mender-artifact/utils returned exit code 2 make[1]: *** [debian/rules:15: override_dh_auto_build] Error 25 make[1]: Leaving directory '/build/golang-github-mendersoftware-mender-artifact-3.7.0+ds1' ``` Regards, Andreas Henriksson
