Replace << with string-interpolation in post_spec
Replace << with string-interpolation in post_spec

dv2/growstuff,cesy/growstuff,yez/growstuff,dv2/growstuff,Growstuff/growstuff,Br3nda/growstuff,maco/growstuff,maco/growstuff,Br3nda/growstuff,pozorvlak/growstuff,pozorvlak/growstuff,yez/growstuff,pozorvlak/growstuff,dv2/growstuff,yez/growstuff,yez/growstuff,maco/growstuff,Growstuff/growstuff,Br3nda/growstuff,cesy/growstuff,Growstuff/growstuff,maco/growstuff,cesy/growstuff,cesy/growstuff,dv2/growstuff,Br3nda/growstuff,pozorvlak/growstuff,Growstuff/growstuff