Question juridique clé
Whether the federal nullity complaint was admissible despite available cantonal review against the compensation award.
Solution extraite
The complaint was inadmissible because the appellant had not exhausted the available cantonal remedies; he could have filed a recourse to the cantonal appellate court on the civil claim.
Motifs extraits
Under Solothurn procedure, a recourse was available to challenge the private-law claim. The cantonal appellate court would have reviewed the civil claim freely, including alleged violations of federal law, so the federal complaint could not bypass that remedy.