Wrong permissions on output binary when using launch.json build + debug configuration?

[PhoenixWright]

Apologies if this is not specific to this extension. I'm working on a HaxeFlixel project and trying to figure out where responsibilities end for each piece of this setup.

I am trying to get a dev environment set up. I can currently launch my project through the build task in tasks.json:

{
    "type": "lime",
    "command": "test",
    "group": {
        "kind": "build",
        "isDefault": true
    }
}

I'm using the Flash / Debug target. This creates my Flash .swf file and opens it immediately.

In the terminal output, I see

> Executing task: lime test flash -debug -Dfdb --connect 6000 <

If I run

ls -hartl

in the bin directory, I'll see this:

-rw-r--r--@ 1 chris  staff   707K Jul  9 17:50 Example.swf

Now, I am trying to get debugging set up. For simplicity, I am removing that .swf file before running the Build + Debug launch config:

{
    "name": "Build + Debug",
    "type": "lime",
    "request": "launch"
}

This config prints the following in the terminal tab, but does not launch the .swf.

> Executing task: lime build flash -debug -Dfdb --connect 6000 <

And in the debug console I see

running /Users/chris/Documents/Development/Example/export/flash/bin/Example.swf
Error: Command failed: "/Users/chris/Documents/Development/Example/export/flash/bin/Example.swf"
/bin/sh: /Users/chris/Documents/Development/Example/export/flash/bin/Example.swf: Permission denied

And if I look at Example.swf's permissions I now see:

-rw-r--r--  1 chris  staff   707K Jul  9 17:53 Example.swf

Essentially, missing the '@' sign and seemingly, the permission to execute. Any idea how to make the launch configuration create the .swf with the proper permissions, assuming that is the problem?