/* If any step has an unsupported system type or has a
           previously failed output path, then fail the build right
           away. */

        /* If any step has a previously failed output path, then fail
           the build right away. */

        for (auto & r : newSteps) {
            BuildStatus buildStatus = bsSuccess;
            BuildStepStatus buildStepStatus = bssFailed;

        for (auto & r : newSteps)

                buildStatus = step == r ? bsFailed : bsDepFailed;
                buildStepStatus = bssFailed;
            }
            if (buildStatus == bsSuccess) {
                bool supported = false;
                {
                    auto machines_(machines.lock()); // FIXME: use shared_mutex
                    for (auto & m : *machines_)
                        if (m.second->supportsStep(r)) { supported = true; break; }
                }
                if (!supported) {
                    printMsg(lvlError, format("aborting unsupported build %1%") % build->id);
                    buildStatus = bsUnsupported;
                    buildStepStatus = bssUnsupported;
                }
            }
            if (buildStatus != bsSuccess) {
                time_t now = time(0);

                    createBuildStep(txn, 0, build, r, "", buildStepStatus);

                    createBuildStep(txn, 0, build, r, "", bssFailed);

                        ("update Builds set finished = 1, busy = 0, buildStatus = $2, startTime = $3, stopTime = $3, isCachedBuild = $4 where id = $1 and finished = 0")

                        ("update Builds set finished = 1, busy = 0, buildStatus = $2, startTime = $3, stopTime = $3, isCachedBuild = 1 where id = $1 and finished = 0")

                        ((int) buildStatus)
                        (now)
                        (buildStatus != bsUnsupported ? 1 : 0).exec();

                        ((int) (step == r ? bsFailed : bsDepFailed))
                        (time(0)).exec();

        }