Repro for https://github.com/bazelbuild/bazel/issues/3726

BUILD

 sh_binary(
  name = "sh",
  srcs = [":repro.sh"],
  data = [":some_data"],
)

load(":rule.bzl", "my_rule")

my_rule(name = "a")

repro.sh

#!/usr/bin/env bash
set -e

# Locate runfiles
case "$0" in
 /*) self="$0" ;;
 *) self="$PWD/$0" ;;
esac
while true; do
  if [[ -e "$self.runfiles" ]]; then
    RUNFILES="$self.runfiles"
    break
  fi

  if [[ $self == *.runfiles/* ]]; then
    RUNFILES="${self%%.runfiles/*}.runfiles"
    # don't break; this is a last resort for case 6b
  fi

  if [[ ! -L "$self" ]]; then
    break;
  fi

  readlink="$(readlink "$self")"
  if [[ "$readlink" = /* ]]; then
    self="$readlink"
  else
    # resolve relative symlink
    self="${self%%/*}/$readlink"
  fi
done

if [[ -z "$RUNFILES" ]]; then
  echo " >>>> FAIL: RUNFILES environment variable is not set. <<<<" >&2
  exit 1
fi

echo "hello world"
echo "writing to $1"

find ${RUNFILES}*

# Uses the symlinks under runfiles, doesn't work on windows
cat ${RUNFILES}/__main__/some_data > $1

# BUG: this file is missing
# comment out this line and it works on Mac/Linux
ls ${RUNFILES}_manifest

exit 0

rule.bzl

def _my_rule(ctx):
  ctx.actions.run(
      inputs = [ctx.executable.compiler],
      outputs = [ctx.outputs.foo],
      executable = ctx.executable.compiler,
      arguments = [ctx.outputs.foo.path])
  return struct()

my_rule = rule(
    implementation = _my_rule,
    attrs = {
          "compiler": attr.label(
              default = Label("//:sh"),
              cfg="host",
              executable=True, allow_files=True)
        },
    outputs = {
            "foo": "foo.txt",
            }
)

some_data

needed at runtime

WORKSPACE

# Empty