Rewrite fileinput tests to use std::rt::io
Rewrite fileinput tests to use std::rt::io

These tests are being very flaky on the bots, and the reason is that files are
being created and then when attempted to get read they actually don't exist. I'm
not entirely sure why this is happening, but I also don't fully trust the
std::io implemention using @-boxes to close/flush/write files at the right time.

This moves the tests to using std::rt::io which is hopefully more robust and
something that we can actually reason about. Sadly, due to #8810, these tests
fail on windows, so they're all ignored on windows right now.

avdi/rust,zubron/rust,ktossell/rust,dwillmer/rust,zaeleus/rust,vhbit/rust,l0kod/rust,TheNeikos/rust,fabricedesre/rust,stepancheg/rust-ide-rust,robertg/rust,stepancheg/rust-ide-rust,pczarn/rust,ktossell/rust,ejjeong/rust,victorvde/rust,SiegeLord/rust,LeoTestard/rust,pczarn/rust,AerialX/rust,robertg/rust,jroesch/rust,kimroen/rust,pshc/rust,carols10cents/rust,l0kod/rust,fabricedesre/rust,mitsuhiko/rust,pshc/rust,erickt/rust,emk/rust,nwin/rust,jroesch/rust,omasanori/rust,pelmers/rust,untitaker/rust,aturon/rust,defuz/rust,ebfull/rust,aturon/rust,XMPPwocky/rust,LeoTestard/rust,XMPPwocky/rust,jbclements/rust,pshc/rust,miniupnp/rust,jbclements/rust,hauleth/rust,krzysz00/rust,LeoTestard/rust,barosl/rust,zubron/rust,aneeshusa/rust,XMPPwocky/rust,miniupnp/rust,kwantam/rust,AerialX/rust-rt-minimal,barosl/rust,jbclements/rust,michaelballantyne/rust-gpu,barosl/rust,reem/rust,vhbit/rust,mihneadb/rust,servo/rust,pythonesque/rust,rprichard/rust,mihneadb/rust,mvdnes/rust,LeoTestard/rust,miniupnp/rust,stepancheg/rust-ide-rust,sae-bom/rust,barosl/rust,nwin/rust,0x73/rust,graydon/rust,mihneadb/rust,bombless/rust,dwillmer/rust,reem/rust,emk/rust,avdi/rust,bombless/rust-docs-chinese,mvdnes/rust,mitsuhiko/rust,mvdnes/rust,carols10cents/rust,robertg/rust,AerialX/rust-rt-minimal,pczarn/rust,Ryman/rust,AerialX/rust,zubron/rust,miniupnp/rust,omasanori/rust,quornian/rust,ruud-v-a/rust,victorvde/rust,arthurprs/rand,barosl/rust,nwin/rust,GBGamer/rust,pshc/rust,nham/rust,servo/rust,jashank/rust,ebfull/rust,reem/rust,LeoTestard/rust,zachwick/rust,AerialX/rust,LeoTestard/rust,untitaker/rust,XMPPwocky/rust,rprichard/rust,nham/rust,philyoon/rust,servo/rust,zachwick/rust,cllns/rust,philyoon/rust,defuz/rust,fabricedesre/rust,ktossell/rust,kwantam/rust,bombless/rust,untitaker/rust,rohitjoshi/rust,TheNeikos/rust,ejjeong/rust,reem/rust,jbclements/rust,bombless/rust,richo/rust,mvdnes/rust,KokaKiwi/rust,hauleth/rust,Ryman/rust,0x73/rust,dwillmer/rust,sae-bom/rust,zaeleus/rust,fabricedesre/rust,rohitjoshi/rust,P1start/rust,zachwick/rust,mdinger/rust,pelmers/rust,Ryman/rust,dwillmer/rust,GBGamer/rust,aturon/rust,vhbit/rust,ruud-v-a/rust,sae-bom/rust,ktossell/rust,mahkoh/rust,l0kod/rust,michaelballantyne/rust-gpu,Ryman/rust,rohitjoshi/rust,P1start/rust,seanrivera/rust,jashank/rust,zubron/rust,pelmers/rust,GBGamer/rust,carols10cents/rust,vhbit/rust,rohitjoshi/rust,AerialX/rust,l0kod/rust,AerialX/rust,fabricedesre/rust,zachwick/rust,philyoon/rust,fabricedesre/rust,victorvde/rust,sae-bom/rust,dwillmer/rust,omasanori/rust,aneeshusa/rust,richo/rust,aidancully/rust,mihneadb/rust,michaelballantyne/rust-gpu,mdinger/rust,mdinger/rust,nham/rust,dinfuehr/rust,zubron/rust,robertg/rust,mahkoh/rust,emk/rust,reem/rust,vhbit/rust,sae-bom/rust,seanrivera/rust,aidancully/rust,dinfuehr/rust,shepmaster/rand,rprichard/rust,vhbit/rust,kimroen/rust,graydon/rust,0x73/rust,nwin/rust,P1start/rust,zaeleus/rust,hauleth/rust,pythonesque/rust,SiegeLord/rust,mdinger/rust,mitsuhiko/rust,jroesch/rust,stepancheg/rust-ide-rust,richo/rust,SiegeLord/rust,defuz/rust,hauleth/rust,krzysz00/rust,aidancully/rust,kwantam/rust,huonw/rand,servo/rust,ebfull/rust,zubron/rust,miniupnp/rust,richo/rust,zubron/rust,krzysz00/rust,aepsil0n/rust,nwin/rust,ejjeong/rust,cllns/rust,jashank/rust,andars/rust,avdi/rust,mdinger/rust,quornian/rust,carols10cents/rust,XMPPwocky/rust,l0kod/rust,seanrivera/rust,gifnksm/rust,waynenilsen/rand,ktossell/rust,dwillmer/rust,mitsuhiko/rust,mihneadb/rust,P1start/rust,pythonesque/rust,andars/rust,seanrivera/rust,andars/rust,reem/rust,AerialX/rust-rt-minimal,andars/rust,0x73/rust,sae-bom/rust,aneeshusa/rust,victorvde/rust,cllns/rust,pczarn/rust,pczarn/rust,gifnksm/rust,mahkoh/rust,bhickey/rand,mitsuhiko/rust,emk/rust,dwillmer/rust,mitsuhiko/rust,krzysz00/rust,jbclements/rust,AerialX/rust,ebfull/rand,mahkoh/rust,nwin/rust,kimroen/rust,ebfull/rust,kimroen/rust,jroesch/rust,emk/rust,stepancheg/rust-ide-rust,TheNeikos/rust,dinfuehr/rust,aepsil0n/rust,aepsil0n/rust,stepancheg/rust-ide-rust,TheNeikos/rust,pshc/rust,ebfull/rust,aepsil0n/rust,pshc/rust,rohitjoshi/rust,philyoon/rust,ejjeong/rust,jroesch/rust,defuz/rust,pelmers/rust,l0kod/rust,ruud-v-a/rust,achanda/rand,erickt/rust,omasanori/rust,quornian/rust,mvdnes/rust,pythonesque/rust,SiegeLord/rust,ebfull/rust,michaelballantyne/rust-gpu,dwillmer/rust,michaelballantyne/rust-gpu,pshc/rust,aneeshusa/rust,graydon/rust,quornian/rust,bombless/rust,TheNeikos/rust,emk/rust,dinfuehr/rust,aturon/rust,0x73/rust,retep998/rand,rprichard/rust,l0kod/rust,kwantam/rust,graydon/rust,bombless/rust,SiegeLord/rust,KokaKiwi/rust,jbclements/rust,rprichard/rust,defuz/rust,nham/rust,KokaKiwi/rust,SiegeLord/rust,zaeleus/rust,GBGamer/rust,aepsil0n/rust,untitaker/rust,krzysz00/rust,aturon/rust,fabricedesre/rust,andars/rust,aneeshusa/rust,XMPPwocky/rust,barosl/rust,krzysz00/rust,ktossell/rust,pshc/rust,servo/rust,ruud-v-a/rust,ruud-v-a/rust,nham/rust,hauleth/rust,rprichard/rust,servo/rust,jroesch/rust,mihneadb/rust,KokaKiwi/rust,erickt/rust,0x73/rust,LeoTestard/rust,michaelballantyne/rust-gpu,pythonesque/rust,jashank/rust,quornian/rust,andars/rust,Ryman/rust,jashank/rust,richo/rust,GBGamer/rust,vhbit/rust,ruud-v-a/rust,erickt/rust,avdi/rust,gifnksm/rust,pelmers/rust,GBGamer/rust,dinfuehr/rust,richo/rust,jbclements/rust,aidancully/rust,barosl/rust,jashank/rust,aepsil0n/rust,aturon/rust,defuz/rust,cllns/rust,jbclements/rust,miniupnp/rust,mahkoh/rust,erickt/rust,hauleth/rust,KokaKiwi/rust,mitsuhiko/rust,omasanori/rust,TheNeikos/rust,philyoon/rust,avdi/rust,mdinger/rust,ejjeong/rust,cllns/rust,l0kod/rust,pczarn/rust,nwin/rust,bombless/rust,gifnksm/rust,stepancheg/rust-ide-rust,Ryman/rust,AerialX/rust-rt-minimal,omasanori/rust,nham/rust,michaelballantyne/rust-gpu,SiegeLord/rust,kimroen/rust,victorvde/rust,quornian/rust,erickt/rust,Ryman/rust,aneeshusa/rust,aturon/rust,nham/rust,miniupnp/rust,aidancully/rust,bluss/rand,0x73/rust,jroesch/rust,zubron/rust,pythonesque/rust,zaeleus/rust,mvdnes/rust,KokaKiwi/rust,ktossell/rust,seanrivera/rust,servo/rust,carols10cents/rust,seanrivera/rust,AerialX/rust-rt-minimal,AerialX/rust-rt-minimal,graydon/rust,philyoon/rust,zaeleus/rust,robertg/rust,quornian/rust,GrahamDennis/rand,nwin/rust,gifnksm/rust,pythonesque/rust,zachwick/rust,carols10cents/rust,GBGamer/rust,ejjeong/rust,pczarn/rust,kimroen/rust,untitaker/rust,jbclements/rust,mahkoh/rust,rohitjoshi/rust,erickt/rust,victorvde/rust,jroesch/rust,P1start/rust,zachwick/rust,robertg/rust,graydon/rust,P1start/rust,avdi/rust,cllns/rust,jashank/rust,miniupnp/rust,aidancully/rust,pelmers/rust,P1start/rust,jashank/rust,dinfuehr/rust,gifnksm/rust,kimroen/rust,vhbit/rust,kwantam/rust,GBGamer/rust,kwantam/rust,emk/rust,untitaker/rust