Handle worker abort better about biocparallel HOT 1 OPEN

> library(future)
> plan(multicore)
> f <- future({ tools::pskill(Sys.getpid()) })
> value(f)
Error: Failed to retrieve the result of MulticoreFuture (<none>) from the forked
worker (on localhost; PID 118742). Post-mortem diagnostic: No process exists
with this PID, i.e. the forked localhost worker is no longer alive
In addition: Warning message:
In mccollect(jobs = jobs, wait = TRUE) :
  1 parallel job did not deliver a result

> library(future)
> plan(multisession)
> f <- future(tools::pskill(Sys.getpid()))
TRACKER:  loadedNamespaces() changed:  1 package loaded ('crayon')
> value(f)
Error in unserialize(node$con) : 
  MultisessionFuture (<none>) failed to receive results from cluster
RichSOCKnode #1 (PID 119302 on localhost 'localhost'). The reason
reported was 'error reading from connection'. Post-mortem diagnostic: No
process exists with this PID, i.e. the localhost worker is no longer alive

> library(future)
> plan(multisession)
> library(XML)
> doc <- xmlParse(system.file("exampleData", "tagnames.xml", package = "XML"))
> a <- getNodeSet(doc, "/doc//a[@status]")[[1]]
> f <- future(xmlGetAttr(a, "status"))
> value(f)
Error in unserialize(node$con) :
  MultisessionFuture (<none>) failed to receive results from cluster
RichSOCKnode #1 (PID 31541 on localhost 'localhost'). The reason
reported was 'error reading from connection'. Post-mortem diagnostic:
No process exists with this PID, i.e. the localhost worker is no
longer alive. Detected a non-exportable reference ('externalptr' of
class 'XMLInternalElementNode') in one of the globals ('a' of class
'XMLInternalElementNode') used in the future expression. The total
size of the 1 globals exported is 520 bytes. There is one global: 'a'
(520 bytes of class 'externalptr')