tests: serialize timer tests
tests: serialize timer tests

Otherwise the output gets interspersed.

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