Error: ENOENT: no such file or directory ember-cli-shims/app-shims.js

I'm trying to rebuild a project with updated packages but run into this error:

[folatt@ArkOS-Dev genesis]$ ember build
cleaning up...
Build failed.
The Broccoli Plugin: [SourceMapConcat: Concat: Vendor /assets/vendor.js] failed with:
Error: ENOENT: no such file or directory, open '/home/folatt/workspace/arkos/genesis/tmp/source_map_concat-input_base_path-http://ift.tt/2meQZSX'
    at Object.fs.openSync (fs.js:583:18)
    at Object.fs.readFileSync (fs.js:490:33)
    at SourceMap.addFile (/home/folatt/workspace/arkos/genesis/node_modules/fast-sourcemap-concat/lib/source-map.js:75:31)
    at /home/folatt/workspace/arkos/genesis/node_modules/broccoli-concat/concat.js:200:16
    at Array.forEach (native)
    at Concat.<anonymous> (/home/folatt/workspace/arkos/genesis/node_modules/broccoli-concat/concat.js:198:24)
    at /home/folatt/workspace/arkos/genesis/node_modules/fast-sourcemap-concat/lib/source-map.js:393:12
    at initializePromise (/home/folatt/workspace/arkos/genesis/node_modules/rsvp/dist/rsvp.js:589:5)
    at new Promise (/home/folatt/workspace/arkos/genesis/node_modules/rsvp/dist/rsvp.js:1077:31)
    at SourceMap.end (/home/folatt/workspace/arkos/genesis/node_modules/fast-sourcemap-concat/lib/source-map.js:380:10)

The broccoli plugin was instantiated at: 
    at Concat.Plugin (/home/folatt/workspace/arkos/genesis/node_modules/broccoli-plugin/index.js:7:31)
    at new Concat (/home/folatt/workspace/arkos/genesis/node_modules/broccoli-concat/concat.js:38:10)
    at module.exports (/home/folatt/workspace/arkos/genesis/node_modules/broccoli-concat/index.js:26:10)
    at EmberApp.concatFiles (/home/folatt/workspace/arkos/genesis/node_modules/ember-cli/lib/broccoli/ember-app.js:392:10)
    at EmberApp._concatFiles (/home/folatt/workspace/arkos/genesis/node_modules/ember-cli/lib/broccoli/ember-app.js:405:15)
    at EmberApp.javascript (/home/folatt/workspace/arkos/genesis/node_modules/ember-cli/lib/broccoli/ember-app.js:1297:12)
    at EmberApp.toArray (/home/folatt/workspace/arkos/genesis/node_modules/ember-cli/lib/broccoli/ember-app.js:1674:10)
    at EmberApp.toTree (/home/folatt/workspace/arkos/genesis/node_modules/ember-cli/lib/broccoli/ember-app.js:1696:30)
    at module.exports (/home/folatt/workspace/arkos/genesis/ember-cli-build.js:89:14)
    at Class.setupBroccoliBuilder (/home/folatt/workspace/arkos/genesis/node_modules/ember-cli/lib/models/builder.js:84:19)

I've tried running nombom to no avail.