triggered error as requested
main.(*app).debugError
	github.com/daaku/bento/main.go:253
main.run.(*app).wrap.func1
	github.com/daaku/bento/main.go:244
net/http.HandlerFunc.ServeHTTP
	net/http/server.go:2322
net/http.(*ServeMux).ServeHTTP
	net/http/server.go:2861
main.run.secureHandler.func18
	github.com/daaku/bento/main.go:586
net/http.HandlerFunc.ServeHTTP
	net/http/server.go:2322
main.run.(*CrossOriginProtection).Handler.func19
	net/http/csrf.go:212
net/http.HandlerFunc.ServeHTTP
	net/http/server.go:2322
net/http.serverHandler.ServeHTTP
	net/http/server.go:3340
net/http.(*conn).serve
	net/http/server.go:2109
runtime.goexit
	runtime/asm_amd64.s:1693