Failed build output from angular master branch

gistfile1.txt

Dart SDK is not available, Dart tasks will be skipped.
[14:12:54] Using gulpfile ~/projects/angular/gulpfile.js
[14:12:54] Starting 'build/clean.js'...
[14:12:54] Starting 'build/clean.tools'...
[14:12:54] Starting 'build/clean.dart'...
Dart SDK is not available. Skipping task: build/clean.dart
[14:12:54] Finished 'build/clean.dart' after 91 μs
[14:12:54] Starting 'build/clean.docs'...
[14:12:54] Starting 'build/clean.bundles'...
[14:12:54] Starting 'build/clean.bundles.benchpress'...
[14:12:54] Finished 'build/clean.tools' after 7.09 ms
[14:12:54] Starting 'build.tools'...
[14:12:54] Starting '!build.tools'...
[14:12:54] Finished 'build/clean.docs' after 167 ms
[14:12:54] Finished 'build/clean.bundles' after 173 ms
[14:12:54] Finished 'build/clean.bundles.benchpress' after 174 ms
[14:12:54] Finished 'build/clean.js' after 589 ms
[14:12:54] Starting 'build.js.dev'...
[14:12:54] Starting 'build/clean.tools'...
[14:12:54] Finished 'build/clean.tools' after 4.09 ms
[14:12:54] Starting 'clean'...
[14:12:54] Finished 'clean' after 5.14 μs
[14:12:54] Starting '!bundle.ng.polyfills'...
[14:12:54] Starting '!bundles.js.docs'...
[14:12:55] Finished '!bundles.js.docs' after 456 ms
[14:12:55] Finished '!bundle.ng.polyfills' after 592 ms
[14:12:58] Finished '!build.tools' after 3.96 s
[14:12:58] Finished 'build.tools' after 3.96 s
[14:12:58] Starting 'broccoli.js.dev'...
[14:12:58] Starting '!broccoli.js.dev'...
[14:12:58] Starting 'build.js.prod'...
[14:12:58] Starting '!broccoli.js.prod'...
[14:12:58] Starting 'build.js.cjs'...
[14:12:58] Starting '!build.js.cjs'...

Slowest Trees                                 | Total               
----------------------------------------------+---------------------
Funnel                                        | 46840ms             
DiffingTSCompiler                             | 7628ms              
DiffingTSCompiler                             | 7326ms              

Slowest Trees (cumulative)                    | Total (avg)         
----------------------------------------------+---------------------
Funnel (13)                                   | 48826ms (3755 ms)   
DiffingTSCompiler (2)                         | 14954ms (7477 ms)   

creating node_modules symlink hack
creating link dist/js/cjs/node_modules/angular2 ../angular2
creating link dist/js/cjs/node_modules/benchmarks ../benchmarks
creating link dist/js/cjs/node_modules/benchmarks_external ../benchmarks_external
creating link dist/js/cjs/node_modules/benchpress ../benchpress
creating link dist/js/cjs/node_modules/playground ../playground
[14:14:06] Finished '!build.js.cjs' after 1.13 min
[14:14:06] Finished 'build.js.cjs' after 1.13 min
[14:14:06] Starting 'benchpress.bundle'...