Removing _devbuild/gen/*
asdl/hnode.asdl -> (asdl_main) -> _devbuild/gen/hnode_asdl.py
frontend/types.asdl -> (asdl_main) -> _devbuild/gen/types_asdl.py
core/runtime.asdl -> (asdl_main) -> _devbuild/gen/runtime_asdl.py
tools/find/find.asdl -> (asdl_main) -> _devbuild/gen/find_asdl.py
  (frontend/consts_gen) -> _devbuild/gen/id_kind_asdl.py
  (frontend/consts_gen) -> _devbuild/gen/id_kind.py
  (frontend/option_gen) -> _devbuild/gen/option_asdl.py
  (frontend/flag_gen) -> _devbuild/gen/arg_types.py
frontend/syntax.asdl -> (asdl_main) -> _devbuild/gen/syntax_asdl.py
mycpp/examples/expr.asdl -> (asdl_main) -> _devbuild/gen/expr_asdl.py
asdl/examples/demo_lib.asdl -> (asdl_main) -> _devbuild/gen/demo_lib_asdl.py
asdl/examples/typed_demo.asdl -> (asdl_main) -> _devbuild/gen/typed_demo_asdl.py
asdl/examples/shared_variant.asdl -> (asdl_main) -> _devbuild/gen/shared_variant_asdl.py
asdl/examples/typed_arith.asdl -> (asdl_main) -> _devbuild/gen/typed_arith_asdl.py
oil_lang/grammar.pgen2 -> (oil_lang/grammar_gen) -> _gen/oil_lang/grammar{.marshal,_nt.py,_nt.h}
tools/find/find.pgen2 -> (oil_lang/grammar_gen) -> _devbuild/gen/find{.marshal,_nt.py,_nt.h}
mycpp/examples/arith.pgen2 -> (oil_lang/grammar_gen) -> _devbuild/gen/arith{.marshal,_nt.py,_nt.h}
  (pyext/setup_libc.py) -> libc.so
OK _test/unit/pyext/libc_test.py.log
  (pyext/setup_line_input.py) -> line_input.so
OK _test/unit/pyext/line_input_test.py.log
  (pyext/setup_posix.py) -> posix_.so
OK _test/unit/pyext/posix_test.py.log
  (pyext/setup_fanos.py) -> fanos.so
OK _test/unit/pyext/fanos_test.py.log
  (py-yajl/setup.py) -> yajl.so
OK _test/unit/py-yajl-unit.log

*****
'build/py.sh minimal' succeeded

  It allows you to run and modify Oil quickly, but the lexer will be slow and
  the help builtin won't work.

'build/py.sh all' requires re2c and libcmark.so.  (Issue #513 is related, ask
on #oil-dev)
*****
OK  simple-command
OK  more-env
OK  line-breaks
OK  pipeline
OK  and-or
OK  dparen
OK  escaped-literal
OK  args-vars
OK  unquote-subs
OK  command-sub
OK  arith-sub
OK  unquote-subs
OK  posix-func
OK  ksh-func
OK  backticks
OK  lhs-assignment
OK  brace-group
OK  subshell
OK  while-loop
OK  while-expr-loop
OK  until-loop
OK  if_
OK  case_
OK  for-loop
OK  empty-for-loop
OK  args-for-loop
OK  time-block
OK  bracket-builtin

All test/osh2oil.sh tests passed.