core: properly propogate exception in do_until()
core: properly propogate exception in do_until()

[avi: use std::move(f).then_wrapped() until patch removing rvalue
      qualification from then_wrapped() lands]

chunshengster/seastar,wildinto/scylla,anzihenry/seastar,acbellini/scylla,mixja/seastar,dwdm/seastar,tempbottle/scylla,hongliangzhao/seastar,dwdm/scylla,gwicke/scylla,senseb/scylla,acbellini/seastar,scylladb/scylla-seastar,kjniemi/seastar,linearregression/seastar,cloudius-systems/seastar,dwdm/scylla,avikivity/scylla,duarten/scylla,dreamsxin/seastar,koolhazz/seastar,printedheart/seastar,kjniemi/seastar,leejir/seastar,chunshengster/seastar,syuu1228/seastar,dwdm/scylla,raphaelsc/seastar,kangkot/scylla,guiquanz/scylla,scylladb/scylla-seastar,asias/scylla,scylladb/seastar,jonathanleang/seastar,raphaelsc/seastar,syuu1228/seastar,justintung/scylla,senseb/scylla,eklitzke/scylla,norcimo5/seastar,ducthangho/imdb,guiquanz/scylla,shyamalschandra/seastar,aruanruan/scylla,duarten/scylla,flashbuckets/seastar,kangkot/scylla,leejir/seastar,syuu1228/seastar,rluta/scylla,glommer/scylla,duarten/scylla,rentongzhang/scylla,respu/scylla,phonkee/scylla,linearregression/scylla,dreamsxin/seastar,ducthangho/imdb,tempbottle/scylla,mixja/seastar,jonathanleang/seastar,raphaelsc/scylla,joerg84/seastar,wildinto/scylla,aruanruan/scylla,shyamalschandra/seastar,capturePointer/scylla,wildinto/seastar,bzero/seastar,kjniemi/scylla,wildinto/seastar,avikivity/seastar,hongliangzhao/seastar,acbellini/scylla,respu/scylla,linearregression/scylla,joerg84/seastar,justintung/scylla,scylladb/scylla-seastar,capturePointer/scylla,printedheart/seastar,acbellini/seastar,scylladb/scylla,bzero/seastar,gwicke/scylla,bzero/seastar,koolhazz/seastar,scylladb/seastar,xtao/seastar,kjniemi/seastar,flashbuckets/seastar,acbellini/seastar,wildinto/scylla,rluta/scylla,anzihenry/seastar,scylladb/scylla,asias/scylla,avikivity/seastar,justintung/scylla,rentongzhang/scylla,joerg84/seastar,stamhe/scylla,sjperkins/seastar,victorbriz/scylla,bowlofstew/seastar,stamhe/seastar,cloudius-systems/seastar,kangkot/scylla,glommer/scylla,shaunstanislaus/scylla,bowlofstew/scylla,phonkee/scylla,scylladb/scylla,phonkee/scylla,ducthangho/imdb,sjperkins/seastar,xtao/seastar,rluta/scylla,eklitzke/scylla,bowlofstew/seastar,gwicke/scylla,bowlofstew/seastar,stamhe/seastar,koolhazz/seastar,victorbriz/scylla,stamhe/scylla,respu/scylla,senseb/scylla,tempbottle/scylla,stamhe/seastar,linearregression/seastar,norcimo5/seastar,tempbottle/seastar,tempbottle/seastar,printedheart/seastar,linearregression/scylla,norcimo5/seastar,shyamalschandra/seastar,wildinto/seastar,mixja/seastar,avikivity/scylla,bowlofstew/scylla,aruanruan/scylla,scylladb/seastar,flashbuckets/seastar,kjniemi/scylla,leejir/seastar,rentongzhang/scylla,acbellini/scylla,linearregression/seastar,eklitzke/scylla,hongliangzhao/seastar,bowlofstew/scylla,capturePointer/scylla,xtao/seastar,raphaelsc/scylla,stamhe/scylla,raphaelsc/scylla,shaunstanislaus/scylla,shaunstanislaus/scylla,avikivity/seastar,asias/scylla,kjniemi/scylla,raphaelsc/seastar,cloudius-systems/seastar,chunshengster/seastar,sjperkins/seastar,dreamsxin/seastar,jonathanleang/seastar,guiquanz/scylla,dwdm/seastar,avikivity/scylla,dwdm/seastar,victorbriz/scylla,glommer/scylla,tempbottle/seastar,anzihenry/seastar,scylladb/scylla