garlic 6.0.1

We encountered an error during the generation of documentation:
<ExceptionDecl ["No_Such_Location", "Malformed_Location"] s-gaphlo.ads:45:4-45:53>
<ExceptionDecl ["Communication_Error"] s-garlic.ads:69:4-69:36>
<IncompleteTypeDecl ["Node"] s-garstr.ads:44:4-44:19>
<ProtectedTypeDecl ["Mutex_PO"] s-gartas.ads:117:4-123:17> <<<<<
<DefiningName s-gartas.ads:117:19-117:27> <<<<<
<Id "Mutex_PO" s-gartas.ads:117:19-117:27> <<<<<
<ParentList s-gartas.ads:117:27-117:27> <<<<<
<ProtectedDef s-gartas.ads:118:7-123:16> <<<<<
<DeclList s-gartas.ads:118:7-120:39> <<<<<
<EntryDecl ["Enter"] s-gartas.ads:118:7-118:19> <<<<<
<OverridingUnspecified s-gartas.ads:117:30-117:30> <<<<<
<EntrySpec s-gartas.ads:118:7-118:18> <<<<<
<DefiningName s-gartas.ads:118:13-118:18> <<<<<
<Id "Enter" s-gartas.ads:118:13-118:18> <<<<<
<DeclList s-gartas.ads:122:7-122:31> <<<<<
<ComponentDecl ["Held"] s-gartas.ads:122:7-122:31> <<<<<
<DefiningNameList s-gartas.ads:122:7-122:11> <<<<<
<DefiningName s-gartas.ads:122:7-122:11> <<<<<
<Id "Held" s-gartas.ads:122:7-122:11> <<<<<
<ComponentDef s-gartas.ads:122:14-122:21> <<<<<
<AliasedAbsent s-gartas.ads:122:13-122:13> <<<<<
<ConstantAbsent s-gartas.ads:122:13-122:13> <<<<<
<SubtypeIndication s-gartas.ads:122:14-122:21> <<<<<
<NotNullAbsent s-gartas.ads:122:13-122:13> <<<<<
<Id "Boolean" s-gartas.ads:122:14-122:21> <<<<<
<Id "False" s-gartas.ads:122:25-122:30> <<<<<
<EndName s-gartas.ads:123:8-123:16> <<<<<
<Id "Mutex_PO" s-gartas.ads:123:8-123:16> <<<<<
<PackageRenamingDecl ["SIO"] s-gastdf.ads:41:4-41:46>
<PackageRenamingDecl ["SGL"] s-gastdf.ads:43:4-43:44>
<PackageRenamingDecl ["SGS"] s-gastdf.ads:44:4-44:49>
<ExceptionDecl ["Communication_Error"] s-rpc.ads:42:4-42:36>
<ExceptionDecl ["Stream_Error"] s-rpstio.ads:47:4-47:29>
<PackageRenamingDecl ["SIO"] s-shasto.ads:176:4-176:46>

raised CONSTRAINT_ERROR : GNATdoc.Entities.Entity_Information_Maps.Constant_Reference: key not in map
ERROR: Command ["gnatdoc4", "-P", "gnat/garlic.gpr", "--output-dir", "/home/chouteau/src/github/alire/docs.ada.dev/crate/garlic/6.0.1", "--front-matter", "crate: garlic", "--no-subprojects"] exited with code 1