update task and job models in preparation of aRTA port

Also removes an unnecessary module in rt.util.epsilon.
6 jobs for master in 6 minutes and 27 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #40894
1.8.0-coq-8.8

00:02:06

passed #40896
1.9.0-coq-8.9

00:02:05

failed #40895
allowed to fail
1.9.0-coq-dev

00:00:15

 
  Process
passed #40898
doc

00:03:08

passed #40899
proof-length

00:00:15

passed #40897
validate

00:04:20

 
Name Stage Failure
failed
1.9.0-coq-dev Build There is an unknown failure, please try again
COQC util/powerset.v
COQC util/seqset.v
File "./util/seqset.v", line 19, characters 42-52:
Error: The reference mkPredType was not found in the current environment.

make[1]: *** [Makefile:659: util/seqset.vo] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:321: all] Error 2
ERROR: Job failed: exit code 1