// checkout all versions
        versions.each { version ->
            succeeds("assertVersion", "-PrepoVersion=${version}")
        }

        // Mark 1.0 as unused
        markUnused("1.0")

        when:
        cleanupNow()
        succeeds("assertVersion", "-PrepoVersion=3.0")
        then:
        checkoutDir("dep", commits["1.0"].id.name, repo.id).assertDoesNotExist()

        removingOutgoingEdges = true;
        if (!outgoingEdges.isEmpty() && !alreadyRemoving) {
            for (EdgeState outgoingDependency : outgoingEdges) {
                outgoingDependency.markUnused();
                ComponentState targetComponent = outgoingDependency.getTargetComponent();
                if (targetComponent == component) {

    public void markAttached() {
        this.unattached = false;
    }

    public boolean isUnattached() {
        return unattached;
    }

    void markUsed() {
        this.used = true;
    }

    void markUnused() {
        this.used = false;
    }

    /**
     * Indicates whether the edge is currently listed as outgoing in a node.

		logf(time.Now().Format(time.RFC3339Nano)+": "+format, args...)
	}
}

// markReused marks this connection as having been successfully used for a
// request and response.
func (pc *persistConn) markReused() {
	pc.mu.Lock()
	pc.reused = true
	pc.mu.Unlock()
}

// close closes the underlying TCP connection and closes