segmentation violation

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x10 pc=0x997e14]

goroutine 1 [running]:
github.com/hashicorp/terraform/terraform.(*Interpolater).resourceVariableInfo(0xc42027cd40, 0xc4206e58f8, 0xc420497b60, 0xc420394aa0, 0xc4204979e0, 0x0, 0x0)
	/opt/gopath/src/github.com/hashicorp/terraform/terraform/interpolate.go:708 +0x44
github.com/hashicorp/terraform/terraform.(*Interpolater).computeResourceVariable(0xc42027cd40, 0xc4206e58f8, 0xc420497b60, 0x0, 0x0, 0x0)
	/opt/gopath/src/github.com/hashicorp/terraform/terraform/interpolate.go:402 +0x18a
github.com/hashicorp/terraform/terraform.(*Interpolater).valueResourceVar(0xc42027cd40, 0xc4206e58f8, 0xc420358862, 0x17, 0xc420497b60, 0xc42040f110, 0x15, 0x46ca3c0)
	/opt/gopath/src/github.com/hashicorp/terraform/terraform/interpolate.go:251 +0x7c
github.com/hashicorp/terraform/terraform.(*Interpolater).Values(0xc42027cd40, 0xc4206e58f8, 0xc42040f0e0, 0x0, 0xc42040f020, 0xc420358860)
	/opt/gopath/src/github.com/hashicorp/terraform/terraform/interpolate.go:86 +0x699
github.com/hashicorp/terraform/repl.(*Session).handleEval(0xc4206e5aa8, 0xc420358840, 0x17, 0x17, 0x17, 0x0, 0x0)
	/opt/gopath/src/github.com/hashicorp/terraform/repl/session.go:57 +0x2cf
github.com/hashicorp/terraform/repl.(*Session).Handle(0xc4206e5aa8, 0xc420358840, 0x17, 0x0, 0x0, 0x0, 0x0)
	/opt/gopath/src/github.com/hashicorp/terraform/repl/session.go:35 +0xdb
github.com/hashicorp/terraform/command.(*ConsoleCommand).modeInteractive(0xc4204ba240, 0xc4206e5aa8, 0x79f69e0, 0xc42040eb70, 0x0)
	/opt/gopath/src/github.com/hashicorp/terraform/command/console_interactive.go:48 +0x1f5
github.com/hashicorp/terraform/command.(*ConsoleCommand).Run(0xc4204ba240, 0xc42000a270, 0x0, 0x0, 0xc4205264a0)
	/opt/gopath/src/github.com/hashicorp/terraform/command/console.go:87 +0x627
github.com/hashicorp/terraform/vendor/github.com/mitchellh/cli.(*CLI).Run(0xc4200b9140, 0xc42052ee70, 0xc42065dcc0, 0x1)
	/opt/gopath/src/github.com/hashicorp/terraform/vendor/github.com/mitchellh/cli/cli.go:154 +0x1a8
main.wrappedMain(0x0)
	/opt/gopath/src/github.com/hashicorp/terraform/main.go:192 +0xb9b
main.realMain(0x0)
	/opt/gopath/src/github.com/hashicorp/terraform/main.go:95 +0xbb
main.main()
	/opt/gopath/src/github.com/hashicorp/terraform/main.go:31 +0x38



!!!!!!!!!!!!!!!!!!!!!!!!!!! TERRAFORM CRASH !!!!!!!!!!!!!!!!!!!!!!!!!!!!

Terraform crashed! This is always indicative of a bug within Terraform.
A crash log has been placed at "crash.log" relative to your current
working directory. It would be immensely helpful if you could please
report the crash with Terraform[1] so that we can fix this.

When reporting bugs, please include your terraform version. That
information is available on the first line of crash.log. You can also
get it by running 'terraform --version' on the command line.

[1]: https://github.com/hashicorp/terraform/issues

!!!!!!!!!!!!!!!!!!!!!!!!!!! TERRAFORM CRASH !!!!!!!!!!!!!!!!!!!!!!!!!!!!