--TEST--
Test the error output of solver problems with dev-master aliases.
--COMPOSER--
{
    "repositories": [
        {
            "type": "package",
            "package": [
                {"name": "a/a", "version": "dev-master", "require": {"d/d": "1.0.0"}, "default-branch": true},
                {"name": "b/b", "version": "dev-master", "require": {"d/d": "2.0.0"}, "default-branch": true},
                {"name": "d/d", "version": "1.0.0"},
                {"name": "d/d", "version": "2.0.0"}
            ]
        }
    ],
    "require": {
        "a/a": "*@dev",
        "b/b": "*@dev"
    }
}

--LOCK--
{
    "packages": [
    ],
    "packages-dev": [],
    "aliases": [],
    "minimum-stability": "dev",
    "stability-flags": [],
    "prefer-stable": false,
    "prefer-lowest": false,
    "platform": [],
    "platform-dev": []
}

--RUN--
update a/a b/b

--EXPECT-EXIT-CODE--
2

--EXPECT-OUTPUT--
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Root composer.json requires b/b *@dev -> satisfiable by b/b[dev-master].
    - a/a dev-master requires d/d 1.0.0 -> satisfiable by d/d[1.0.0].
    - You can only install one version of a package, so only one of these can be installed: d/d[1.0.0, 2.0.0].
    - b/b dev-master requires d/d 2.0.0 -> satisfiable by d/d[2.0.0].
    - Conclusion: install b/b dev-master (conflict analysis result)
    - Root composer.json requires a/a *@dev -> satisfiable by a/a[dev-master].

--EXPECT--