Travis build failing in master

[lukehoban]

https://travis-ci.com/pulumi/pulumi-aws/builds/57279954

[ /pulumi-aws/examples/webserver ] **** Invoke '/opt/pulumi/bin/pulumi preview' in /tmp/lumi-integration-test-245456509

[ /pulumi-aws/examples/webserver ] Previewing changes:

[ /pulumi-aws/examples/webserver ] panic: fatal: An assertion has failed

[ /pulumi-aws/examples/webserver ] 

[ /pulumi-aws/examples/webserver ] goroutine 1 [running]:

[ /pulumi-aws/examples/webserver ] github.com/pulumi/pulumi/pkg/util/contract.failfast(0x9f0c8f, 0x17)

[ /pulumi-aws/examples/webserver ] 	/home/travis/gopath/src/github.com/pulumi/pulumi/pkg/util/contract/failfast.go:11 +0xf3

[ /pulumi-aws/examples/webserver ] github.com/pulumi/pulumi/pkg/util/contract.Assert(0xc420302a00)

[ /pulumi-aws/examples/webserver ] 	/home/travis/gopath/src/github.com/pulumi/pulumi/pkg/util/contract/assert.go:14 +0x49

[ /pulumi-aws/examples/webserver ] github.com/pulumi/pulumi/pkg/resource/deploy.NewDeleteStep(0xc4201b66e0, 0xc42015aa10, 0xc420022301, 0x53[ /pulumi-aws/examples/webserver ] , 0xc4202ce449)

[ /pulumi-aws/examples/webserver ] 	/home/travis/gopath/src/github.com/pulumi/pulumi/pkg/resource/deploy/step.go:193 +0x88

[ /pulumi-aws/examples/webserver ] github.com/pulumi/pulumi/pkg/resource/deploy.(*PlanIterator).nextDeleteStep(0xc4201b66e0, 0xc420302ab0, 0x2)

[ /pulumi-aws/examples/webserver ] 	/home/travis/gopath/src/github.com/pulumi/pulumi/pkg/resource/deploy/plan_apply.go:367 +0x20b

[ /pulumi-aws/examples/webserver ] github.com/pulumi/pulumi/pkg/resource/deploy.(*PlanIterator).Next(0xc4201b66e0, 0xcdf220, 0xc4203014d0, 0x0, 0x0)

[ /pulumi-aws/examples/webserver ] 	/home/travis/gopath/src/github.com/pulumi/pulumi/pkg/resource/deploy/plan_apply.go:163 +0x274

[ /pulumi-aws/examples/webserver ] github.com/pulumi/pulumi/pkg/engine.(*planResult).Walk(0xc420066e40, 0xcd36c0, 0xc4200820c0, 0x0, 0xc420182e10, 0xc420181310, 0x29, 0x3, 0xc420000180, 0xc420064240)

[ /pulumi-aws/examples/webserver ] 	/home/travis/gopath/src/github.com/pulumi/pulumi/pkg/engine/plan.go:114 +0xfb

[ /pulumi-aws/examples/webserver ] github.com/pulumi/pulumi/pkg/engine.(*Engine).printPlan(0xd23220, 0xc420066e40, 0xcd3680, 0xc420066e40)

[ /pulumi-aws/examples/webserver ] 	/home/travis/gopath/src/github.com/pulumi/pulumi/pkg/engine/plan.go:168 +0x288

[ /pulumi-aws/examples/webserver ] github.com/pulumi/pulumi/pkg/engine.(*Engine).previewLatest(0xd23220, 0xc420186260, 0x10000, 0xd435e8, 0x0, 0x0, 0x0, 0x0, 0xc4200221e0, 0xce0840, ...)

[ /pulumi-aws/examples/webserver ] 	/home/travis/gopath/src/github.com/pulumi/pulumi/pkg/engine/preview.go:60 +0x18c

[ /pulumi-aws/examples/webserver ] github.com/pulumi/pulumi/pkg/engine.(*Engine).Preview(0xd23220, 0xc420014b20, 0x12, 0xc4200221e0, 0x0, 0x0, 0xd435e8, 0x0, 0x0, 0x0, ...)

[ /pulumi-aws/examples/webserver ] 	/home/travis/gopath/src/github.com/pulumi/pulumi/pkg/engine/preview.go:50 +0x25a

[ /pulumi-aws/examples/webserver ] github.com/pulumi/pulumi/cmd.newPreviewCmd.func1(0xc42015e900, 0xd435e8, 0x0, 0x0, 0x0, 0x0)

[ /pulumi-aws/examples/webserver ] 	/home/travis/gopath/src/github.com/pulumi/pulumi/cmd/preview.go:46 +0x273

[ /pulumi-aws/examples/webserver ] github.com/pulumi/pulumi/pkg/util/cmdutil.RunFunc.func1(0xc42015e900, 0xd435e8, 0x0, 0x0)

[ /pulumi-aws/examples/webserver ] 	/home/travis/gopath/src/github.com/pulumi/pulumi/pkg/util/cmdutil/exit.go:20 +0x51

[ /pulumi-aws/examples/webserver ] github.com/pulumi/pulumi/vendor/github.com/spf13/cobra.(*Command).execute(0xc42015e900, 0xd435e8, 0x0, 0x0, 0xc42015e900, 0xd435e8)

[ /pulumi-aws/examples/webserver ] 	/home/travis/gopath/src/github.com/pulumi/pulumi/vendor/github.com/spf13/cobra/command.go:654 +0x2a2

[ /pulumi-aws/examples/webserver ] github.com/pulumi/pulumi/vendor/github.com/spf13/cobra.(*Command).ExecuteC(0xc4200a5680, 0xc420012c31, 0xc420012c30, 0xc42004b2a0)

[ /pulumi-aws/examples/webserver ] 	/home/travis/gopath/src/github.com/pulumi/pulumi/vendor/github.com/spf13/cobra/command.go:729 +0x2fe

[ /pulumi-aws/examples/webserver ] github.com/pulumi/pulumi/vendor/github.com/spf13/cobra.(*Command).Execute(0xc4200a5680, 0x9, 0xc4200a5680)

[ /pulumi-aws/examples/webserver ] 	/home/travis/gopath/src/github.com/pulumi/pulumi/vendor/github.com/spf13/cobra/command.go:688 +0x2b

[ /pulumi-aws/examples/webserver ] main.main()

[ /pulumi-aws/examples/webserver ] 	/home/travis/gopath/src/github.com/pulumi/pulumi/main.go:16 +0x4b

[ /pulumi-aws/examples/webserver ] 

[lukehoban]

@pgavlin - this looks related to your changes in pulumi/pulumi. May need to push through updates in al that repos above that?

[pgavlin]

I will look into this.

[pgavlin]

This looks like an actual bug (rather than, say, the need for a dep ensure -update).

[pgavlin]

We are now green again: https://travis-ci.com/pulumi/pulumi-aws/builds/57285696