STM: when batch compiling a vo, assert we behave conservatively
STM: when batch compiling a vo, assert we behave conservatively

This meas that the list of future_constraints in safe_env is empty,
meaning that nothing was delayed.

JasonGross/coq,shindere/coq,letouzey/coq-wip,silene/coq,william-lawvere/coq,pirbo/coq,Zimmi48/coq,coq/coq,amintimany/coq,Zimmi48/coq,ejgallego/coq,william-lawvere/coq,barras/coq,amintimany/coq,barras/coq,SkySkimmer/coq,silene/coq,8l/coq,Lionel-Rieg/coq,aspiwack/coq,SkySkimmer/coq,Lionel-Rieg/coq,JasonGross/coq,shindere/coq,maximedenes/coq,ejgallego/coq,ppedrot/coq,pirapira/coq2rust,mattam82/coq,Matafou/coq,asr/coq,8l/coq,gmalecha/coq,mattam82/coq,Matafou/coq,asr/coq,Ptival/coq,gares/coq,ppedrot/coq,ale-f/coq,william-lawvere/coq,ejgallego/coq,jpdeplaix/coq,gares/coq,coq/coq,pirapira/coq2rust,JasonGross/coq,asr/coq,letouzey/coq-wip,jpdeplaix/coq,maximedenes/coq,maximedenes/coq,TOSPIO/coq,ale-f/coq,JasonGross/coq,TheTypoMaster/coq,TheTypoMaster/coq,gares/coq,shindere/coq,aspiwack/coq,ejgallego/coq,pirbo/coq,aspiwack/coq,SkySkimmer/coq,barras/coq,ppedrot/coq,herbelin/github-coq,letouzey/coq-wip,gares/coq,herbelin/github-coq,mlasson/coq,coq/coq,pirbo/coq,silene/coq,mattam82/coq,ale-f/coq,maximedenes/coq,Zimmi48/coq,letouzey/coq-wip,mlasson/coq,coq/coq,maximedenes/coq,TOSPIO/coq,SkySkimmer/coq,TOSPIO/coq,Lionel-Rieg/coq,Zimmi48/coq,jpdeplaix/coq,TheTypoMaster/coq,pirapira/coq2rust,letouzey/coq-wip,8l/coq,amintimany/coq,mlasson/coq,ppedrot/coq,gares/coq,Ptival/coq,Matafou/coq,gmalecha/coq,gmalecha/coq,ppedrot/coq,herbelin/github-coq,Ptival/coq