bisectable6

query

chdir ‘/tmp’; exit 42 if run(:err, <perl6 --profile -e>, ｢say "foo"｣).err.slurp.contains: ‘null’

result

¦«2015.12,2016.01.1,2016.02,2016.03,2016.04,2016.05,2016.06,2016.07.1,
  2016.08.1,2016.09,222d16b^»:
Method 'slurp' not found for invocant of class 'IO::Pipe'
  in block <unit> at /tmp/N52use3GCJ line 1

foo
 «exit code = 1»
¦«222d16b,2016.10,2016.11,2016.12,2017.01,2017.02,2017.03,f1b4af7^»:
No such method 'slurp' for invocant of type 'IO::Pipe'
  in block <unit> at /tmp/N52use3GCJ line 1

foo
 «exit code = 1»
¦«f1b4af7,2017.04.3,2017.05,2017.06,2017.07,2017.08,2017.09,2017.10,
  2017.11,2017.12,2018.01,2018.02.1,2018.03,2018.04.1,2018.05,2018.06,
  2018.08,2018.09,2018.10,2018.11,2018.12,2019.03.1,2019.07.1,2019.11,
  2020.01,2020.02.1,2020.05.1,2020.06,1b3780f^»:
foo

¦«1b3780f,2020.07,HEAD(3843a1e)»:
foo
 «exit code = 42»