$ ember build
cleaning up...
Build failed.
The Broccoli Plugin: [ResolutionMapBuilder] failed with:
Error: The collection 'components' is not configured to contain a collection 'mustasch'
    at parts.forEach.part (/Users/emil/go/src/git.ninjazombie.se/emil/mustasch/node_modules/@glimmer/resolution-map-builder/lib/get-module-specifier.js:44:17)
    at Array.forEach (native)
    at module.exports (/Users/emil/go/src/git.ninjazombie.se/emil/mustasch/node_modules/@glimmer/resolution-map-builder/lib/get-module-specifier.js:39:11)
    at mappedPaths.forEach.modulePath (/Users/emil/go/src/git.ninjazombie.se/emil/mustasch/node_modules/@glimmer/resolution-map-builder/index.js:66:21)
    at Array.forEach (native)
    at ResolutionMapBuilder.build (/Users/emil/go/src/git.ninjazombie.se/emil/mustasch/node_modules/@glimmer/resolution-map-builder/index.js:63:15)
    at /Users/emil/go/src/git.ninjazombie.se/emil/mustasch/node_modules/@glimmer/resolution-map-builder/node_modules/broccoli-plugin/read_compat.js:93:34
    at tryCatch (/Users/emil/go/src/git.ninjazombie.se/emil/mustasch/node_modules/rsvp/dist/rsvp.js:539:12)
    at invokeCallback (/Users/emil/go/src/git.ninjazombie.se/emil/mustasch/node_modules/rsvp/dist/rsvp.js:554:13)
    at publish (/Users/emil/go/src/git.ninjazombie.se/emil/mustasch/node_modules/rsvp/dist/rsvp.js:522:7)

The broccoli plugin was instantiated at:
    at ResolutionMapBuilder.Plugin (/Users/emil/go/src/git.ninjazombie.se/emil/mustasch/node_modules/@glimmer/resolution-map-builder/node_modules/broccoli-plugin/index.js:7:31)
    at new ResolutionMapBuilder (/Users/emil/go/src/git.ninjazombie.se/emil/mustasch/node_modules/@glimmer/resolution-map-builder/index.js:12:10)
    at GlimmerApp.buildResolutionMap (/Users/emil/go/src/git.ninjazombie.se/emil/mustasch/node_modules/@glimmer/application-pipeline/dist/commonjs/es5/broccoli/glimmer-app.js:316:16)
    at GlimmerApp.javascriptTree (/Users/emil/go/src/git.ninjazombie.se/emil/mustasch/node_modules/@glimmer/application-pipeline/dist/commonjs/es5/broccoli/glimmer-app.js:254:30)
    at GlimmerApp.toTree (/Users/emil/go/src/git.ninjazombie.se/emil/mustasch/node_modules/@glimmer/application-pipeline/dist/commonjs/es5/broccoli/glimmer-app.js:212:27)
    at module.exports (/Users/emil/go/src/git.ninjazombie.se/emil/mustasch/ember-cli-build.js:23:14)
    at Builder.setupBroccoliBuilder (/Users/emil/go/src/git.ninjazombie.se/emil/mustasch/node_modules/ember-cli/lib/models/builder.js:54:19)
    at new Builder (/Users/emil/go/src/git.ninjazombie.se/emil/mustasch/node_modules/ember-cli/lib/models/builder.js:33:10)
    at BuildTask.run (/Users/emil/go/src/git.ninjazombie.se/emil/mustasch/node_modules/ember-cli/lib/tasks/build.js:15:19)
    at Win.checkIfSymlinksNeedToBeEnabled.then (/Users/emil/go/src/git.ninjazombie.se/emil/mustasch/node_modules/ember-cli/lib/commands/build.js:32:29)