lastimport: Log error responses
lastimport: Log error responses

For debugging #1574.

swt30/beets,beetbox/beets,madmouser1/beets,kelvinhammond/beets,YetAnotherNerd/beets,MyTunesFreeMusic/privacy-policy,jmwatte/beets,sadatay/beets,SusannaMaria/beets,beetbox/beets,kelvinhammond/beets,diego-plan9/beets,jcoady9/beets,Freso/beets,tima/beets,kareemallen/beets,jackwilsdon/beets,jcoady9/beets,Freso/beets,MyTunesFreeMusic/privacy-policy,lightwang1/beets,shamangeorge/beets,jackwilsdon/beets,mried/beets,parapente/beets,artemutin/beets,swt30/beets,lengtche/beets,m-urban/beets,tima/beets,YetAnotherNerd/beets,asteven/beets,tima/beets,MyTunesFreeMusic/privacy-policy,kareemallen/beets,marcuskrahl/beets,artemutin/beets,mried/beets,shamangeorge/beets,sadatay/beets,jcoady9/beets,Freso/beets,jmwatte/beets,ibmibmibm/beets,marcuskrahl/beets,shamangeorge/beets,mried/beets,asteven/beets,m-urban/beets,mried/beets,Kraymer/beets,lengtche/beets,lightwang1/beets,MyTunesFreeMusic/privacy-policy,sadatay/beets,Kraymer/beets,lengtche/beets,ibmibmibm/beets,pkess/beets,xsteadfastx/beets,SusannaMaria/beets,drm00/beets,beetbox/beets,xsteadfastx/beets,mosesfistos1/beetbox,beetbox/beets,kelvinhammond/beets,tima/beets,sadatay/beets,swt30/beets,lengtche/beets,jackwilsdon/beets,pkess/beets,xsteadfastx/beets,mosesfistos1/beetbox,LordSputnik/beets,diego-plan9/beets,drm00/beets,jmwatte/beets,LordSputnik/beets,Kraymer/beets,drm00/beets,madmouser1/beets,marcuskrahl/beets,LordSputnik/beets,kelvinhammond/beets,swt30/beets,m-urban/beets,asteven/beets,pkess/beets,jmwatte/beets,marcuskrahl/beets,sampsyo/beets,ibmibmibm/beets,drm00/beets,lightwang1/beets,sampsyo/beets,YetAnotherNerd/beets,Freso/beets,YetAnotherNerd/beets,parapente/beets,madmouser1/beets,asteven/beets,sampsyo/beets,diego-plan9/beets,xsteadfastx/beets,kareemallen/beets,kareemallen/beets,m-urban/beets,pkess/beets,Kraymer/beets,lightwang1/beets,mosesfistos1/beetbox,SusannaMaria/beets,artemutin/beets,parapente/beets,madmouser1/beets,sampsyo/beets,mosesfistos1/beetbox,artemutin/beets,jcoady9/beets,ibmibmibm/beets,LordSputnik/beets,SusannaMaria/beets,jackwilsdon/beets,shamangeorge/beets,diego-plan9/beets,parapente/beets