[SILGenThunk.cpp:129](emitDistributedThunkForDecl) VAR THUNK IS:
(accessor_decl implicit <anonymous @ 0x1591115a0> interface type="<ActorSystem where ActorSystem : DistributedActorSystem, ActorSystem.SerializationRequirement == any Decodable & Encodable> (Worker<ActorSystem>) -> () async throws -> String" access=internal final captures=(<generic> ) nonisolated distributed_thunk _distributed_get for="distributedVariable"
  (parameter "self" interface type="Worker<ActorSystem>" known_to_be_local)
  (parameter_list)
  (brace_stmt implicit
    (if_stmt implicit
      (conditions=array
        (call_expr implicit type="Bool" nothrow isolation_crossing="none"
          (declref_expr implicit type="(AnyObject) -> Bool" decl="Distributed.(file).__isRemoteActor" function_ref=single)
          (argument_list implicit
            (argument
              (erasure_expr implicit type="AnyObject"
                (declref_expr implicit type="Worker<ActorSystem>" decl="main.(file).Worker.<anonymous>.self known-to-be-local" function_ref=unapplied))))))
      (brace_stmt implicit
        (pattern_binding_decl implicit
          (pattern_named implicit type="ActorSystem" "system")
          (original_init=unresolved_dot_expr implicit type="<null>" field="actorSystem" function_ref=unapplied
            (declref_expr implicit type="Worker<ActorSystem>" decl="main.(file).Worker.<anonymous>.self known-to-be-local" function_ref=unapplied))
          (processed_init=member_ref_expr implicit type="ActorSystem" decl="main.(file).Worker.actorSystem [with (substitution_map generic_signature=<ActorSystem where ActorSystem : DistributedActorSystem, ActorSystem.SerializationRequirement == any Decodable & Encodable> ActorSystem -> ActorSystem)]"
            (declref_expr implicit type="Worker<ActorSystem>" decl="main.(file).Worker.<anonymous>.self known-to-be-local" function_ref=unapplied)))
        (var_decl implicit "system" interface type="ActorSystem" access=private let readImpl=stored immutable)
        (pattern_binding_decl implicit
          (pattern_named implicit type="ActorSystem.InvocationEncoder" "invocation")
          (original_init=call_expr implicit type="ActorSystem.InvocationEncoder" nothrow isolation_crossing="none"
            (dot_syntax_call_expr implicit type="() -> ActorSystem.InvocationEncoder" nothrow isolation_crossing="none"
              (declref_expr implicit type="(ActorSystem) -> () -> ActorSystem.InvocationEncoder" decl="Distributed.(file).DistributedActorSystem.makeInvocationEncoder() [with (substitution_map generic_signature=<Self where Self : DistributedActorSystem> Self -> ActorSystem)]" function_ref=single)
              (argument_list implicit
                (argument
                  (declref_expr implicit type="ActorSystem" decl="main.(file).Worker.<anonymous>.system" function_ref=unapplied))))
            (argument_list implicit))
          (processed_init=call_expr implicit type="ActorSystem.InvocationEncoder" nothrow isolation_crossing="none"
            (dot_syntax_call_expr implicit type="() -> ActorSystem.InvocationEncoder" nothrow isolation_crossing="none"
              (declref_expr implicit type="(ActorSystem) -> () -> ActorSystem.InvocationEncoder" decl="Distributed.(file).DistributedActorSystem.makeInvocationEncoder() [with (substitution_map generic_signature=<Self where Self : DistributedActorSystem> Self -> ActorSystem)]" function_ref=single)
              (argument_list implicit
                (argument
                  (declref_expr implicit type="ActorSystem" decl="main.(file).Worker.<anonymous>.system" function_ref=unapplied))))
            (argument_list implicit)))
        (var_decl implicit "invocation" interface type="ActorSystem.InvocationEncoder" access=private readImpl=stored writeImpl=stored readWriteImpl=stored)
        (try_expr implicit type="()"
          (call_expr implicit type="()" throws isolation_crossing="none"
            (dot_syntax_call_expr implicit type="(ActorSystem.Type) throws -> ()" nothrow isolation_crossing="none"
              (declref_expr implicit type="(inout ActorSystem.InvocationEncoder) -> (ActorSystem.Type) throws -> ()" decl="Distributed.(file).DistributedTargetInvocationEncoder.recordGenericSubstitution [with (substitution_map generic_signature=<Self, T where Self : DistributedTargetInvocationEncoder> Self -> ActorSystem.InvocationEncoder T -> ActorSystem)]" function_ref=single)
              (argument_list implicit
                (argument inout
                  (inout_expr implicit type="inout ActorSystem.InvocationEncoder"
                    (declref_expr implicit type="@lvalue ActorSystem.InvocationEncoder" decl="main.(file).Worker.<anonymous>.invocation" function_ref=unapplied)))))
            (argument_list implicit
              (argument
                (dot_self_expr type="ActorSystem.Type"
                  (type_expr implicit type="ActorSystem.Type" null_typerepr))))))
        (try_expr implicit type="()"
          (call_expr implicit type="()" throws isolation_crossing="none"
            (dot_syntax_call_expr implicit type="(String.Type) throws -> ()" nothrow isolation_crossing="none"
              (declref_expr implicit type="(inout ActorSystem.InvocationEncoder) -> (String.Type) throws -> ()" decl="Distributed.(file).DistributedTargetInvocationEncoder.recordReturnType [with (substitution_map generic_signature=<Self, R where Self : DistributedTargetInvocationEncoder> Self -> ActorSystem.InvocationEncoder R -> String)]" function_ref=single)
              (argument_list implicit
                (argument inout
                  (inout_expr implicit type="inout ActorSystem.InvocationEncoder"
                    (declref_expr implicit type="@lvalue ActorSystem.InvocationEncoder" decl="main.(file).Worker.<anonymous>.invocation" function_ref=unapplied)))))
            (argument_list implicit
              (argument
                (dot_self_expr type="String.Type"
                  (type_expr implicit type="String.Type" null_typerepr))))))
        (try_expr implicit type="()"
          (call_expr implicit type="()" throws isolation_crossing="none"
            (dot_syntax_call_expr implicit type="() throws -> ()" nothrow isolation_crossing="none"
              (declref_expr implicit type="(inout ActorSystem.InvocationEncoder) -> () throws -> ()" decl="Distributed.(file).DistributedTargetInvocationEncoder.doneRecording() [with (substitution_map generic_signature=<Self where Self : DistributedTargetInvocationEncoder> Self -> ActorSystem.InvocationEncoder)]" function_ref=single)
              (argument_list implicit
                (argument inout
                  (inout_expr implicit type="inout ActorSystem.InvocationEncoder"
                    (declref_expr implicit type="@lvalue ActorSystem.InvocationEncoder" decl="main.(file).Worker.<anonymous>.invocation" function_ref=unapplied)))))
            (argument_list implicit)))
        (pattern_binding_decl implicit
          (pattern_named implicit type="RemoteCallTarget" "target")
          (original_init=call_expr implicit type="RemoteCallTarget" nothrow isolation_crossing="none"
            (constructor_ref_call_expr implicit type="(String) -> RemoteCallTarget" nothrow isolation_crossing="none"
              (declref_expr implicit type="(RemoteCallTarget.Type) -> (String) -> RemoteCallTarget" decl="Distributed.(file).RemoteCallTarget.init(_:)" function_ref=single)
              (argument_list implicit
                (argument
                  (type_expr implicit type="RemoteCallTarget.Type" typerepr="RemoteCallTarget"))))
            (argument_list implicit
              (argument
                (string_literal_expr implicit type="String" encoding=utf8 value="$s4main6WorkerC19distributedVariableSSyYaKFTE" builtin_initializer="Swift.(file).String extension.init(_builtinStringLiteral:utf8CodeUnitCount:isASCII:)" initializer="**NULL**"))))
          (processed_init=call_expr implicit type="RemoteCallTarget" nothrow isolation_crossing="none"
            (constructor_ref_call_expr implicit type="(String) -> RemoteCallTarget" nothrow isolation_crossing="none"
              (declref_expr implicit type="(RemoteCallTarget.Type) -> (String) -> RemoteCallTarget" decl="Distributed.(file).RemoteCallTarget.init(_:)" function_ref=single)
              (argument_list implicit
                (argument
                  (type_expr implicit type="RemoteCallTarget.Type" typerepr="RemoteCallTarget"))))
            (argument_list implicit
              (argument
                (string_literal_expr implicit type="String" encoding=utf8 value="$s4main6WorkerC19distributedVariableSSyYaKFTE" builtin_initializer="Swift.(file).String extension.init(_builtinStringLiteral:utf8CodeUnitCount:isASCII:)" initializer="**NULL**")))))
        (var_decl implicit "target" interface type="RemoteCallTarget" access=private let readImpl=stored immutable)
        (return_stmt implicit
          (try_expr implicit type="String"
            (await_expr implicit type="String"
              (call_expr implicit type="String" throws isolation_crossing="none"
                (dot_syntax_call_expr implicit type="(Worker<ActorSystem>, RemoteCallTarget, inout ActorSystem.InvocationEncoder, Never.Type, String.Type) async throws -> String" nothrow isolation_crossing="none"
                  (declref_expr implicit type="(ActorSystem) -> (Worker<ActorSystem>, RemoteCallTarget, inout ActorSystem.InvocationEncoder, Never.Type, String.Type) async throws -> String" decl="Distributed.(file).DistributedActorSystem.remoteCall(on:target:invocation:throwing:returning:) [with (substitution_map generic_signature=<Self, Act, Err, Res where Self : DistributedActorSystem, Act : DistributedActor, Err : Error, Self.ActorID == Act.ID> Self -> ActorSystem Act -> Worker<ActorSystem> Err -> Never Res -> String)]" function_ref=single)
                  (argument_list implicit
                    (argument
                      (declref_expr implicit type="ActorSystem" decl="main.(file).Worker.<anonymous>.system" function_ref=unapplied))))
                (argument_list implicit labels="on:target:invocation:throwing:returning:"
                  (argument label="on"
                    (declref_expr implicit type="Worker<ActorSystem>" decl="main.(file).Worker.<anonymous>.self known-to-be-local" function_ref=unapplied))
                  (argument label="target"
                    (declref_expr implicit type="RemoteCallTarget" decl="main.(file).Worker.<anonymous>.target" function_ref=unapplied))
                  (argument label="invocation" inout
                    (inout_expr implicit type="inout ActorSystem.InvocationEncoder"
                      (declref_expr implicit type="@lvalue ActorSystem.InvocationEncoder" decl="main.(file).Worker.<anonymous>.invocation" function_ref=unapplied)))
                  (argument label="throwing"
                    (dot_self_expr type="Never.Type"
                      (type_expr implicit type="Never.Type" typerepr="Never")))
                  (argument label="returning"
                    (dot_self_expr type="String.Type"
                      (type_expr implicit type="String.Type" null_typerepr)))))))))
      (brace_stmt implicit
        (return_stmt implicit
          (await_expr implicit type="String"
            (member_ref_expr implicit type="String" decl="main.(file).Worker.distributedVariable@/Users/ktoso/code/swift-project/swift/test/Distributed/Runtime/distributed_actor_localSystem_distributed_property.swift:18:19 [with (substitution_map generic_signature=<ActorSystem where ActorSystem : DistributedActorSystem, ActorSystem.SerializationRequirement == any Decodable & Encodable> ActorSystem -> ActorSystem)]"
              (declref_expr implicit type="Worker<ActorSystem>" decl="main.(file).Worker.<anonymous>.self known-to-be-local" function_ref=unapplied))))))))
Assertion failed: (ThrowDest.isValid() && "calling emitThrow with invalid throw destination!"), function emitThrow, file SILGenStmt.cpp, line 1536.