view .arcconfig @ 34308:9bd003052d55

keepalive: add more context to bad status line errors

As the TODO in the test said, the previous error message was not
very helpful. Let's improve things.

Differential Revision: https://phab.mercurial-scm.org/D811

{
    "conduit_uri": "https://phab.mercurial-scm.org/api",
    "repository.callsign": "HG",
    "arc.land.onto.default": "@",
    "base": "hg:.^"
}