[wip] get handle from global, and create handle from int

13 jobs from heap-persist in 24 minutes and 15 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Test
passed #1952
test:cargo:api

01:56

failed #1954
test:cargo:compiler

01:53

passed #1953
test:cargo:ir

01:53

passed #1955
test:cargo:runtime

01:51

passed #1957
testjit:binops

01:53

passed #1958
testjit:cmpops

01:53

failed #1959
testjit:controlflow

01:34

passed #1960
testjit:convops

01:51

failed #1961
testjit:double

01:35

failed #1962
testjit:memops

01:36

passed #1956
testjit:milestones

01:54

failed #1963
testjit:otherops

01:31

passed #1964
testjit:rpython

02:48