$ lein2 trampoline run
Downloading Leiningen now...
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 9581k  100 9581k    0     0   692k      0  0:00:13  0:00:13 --:--:--  829k
Exception in thread "main" java.lang.ClassCastException: clojure.core$promise$reify__5727 cannot be cast to java.lang.Number
	at clojure.lang.Numbers.isZero(Numbers.java:90)
	at leiningen.compile$compile.invoke(compile.clj:130)
	at clojure.lang.Var.invoke(Var.java:401)
	at clojure.lang.AFn.applyToHelper(AFn.java:161)
	at clojure.lang.Var.applyTo(Var.java:518)
	at clojure.core$apply.invoke(core.clj:602)
	at leiningen.core.main$resolve_task$fn__648.doInvoke(main.clj:54)
	at clojure.lang.RestFn.invoke(RestFn.java:410)
	at clojure.lang.AFn.applyToHelper(AFn.java:161)
	at clojure.lang.RestFn.applyTo(RestFn.java:132)
	at clojure.lang.AFunction$1.doInvoke(AFunction.java:29)
	at clojure.lang.RestFn.applyTo(RestFn.java:137)
	at clojure.core$apply.invoke(core.clj:602)
	at leiningen.core.main$apply_task.invoke(main.clj:75)
	at leiningen.core.eval$prep.invoke(eval.clj:62)
	at leiningen.core.eval$eval_in_project.invoke(eval.clj:177)
	at leiningen.run$run_main.doInvoke(run.clj:24)
	at clojure.lang.RestFn.invoke(RestFn.java:425)
	at clojure.lang.AFn.applyToHelper(AFn.java:163)
	at clojure.lang.RestFn.applyTo(RestFn.java:132)
	at clojure.core$apply.invoke(core.clj:604)
	at leiningen.run$run.doInvoke(run.clj:54)
	at clojure.lang.RestFn.invoke(RestFn.java:410)
	at clojure.lang.Var.invoke(Var.java:401)
	at clojure.lang.AFn.applyToHelper(AFn.java:161)
	at clojure.lang.Var.applyTo(Var.java:518)
	at clojure.core$apply.invoke(core.clj:602)
	at leiningen.core.main$resolve_task$fn__648.doInvoke(main.clj:54)
	at clojure.lang.RestFn.invoke(RestFn.java:410)
	at clojure.lang.AFn.applyToHelper(AFn.java:161)
	at clojure.lang.RestFn.applyTo(RestFn.java:132)
	at clojure.lang.AFunction$1.doInvoke(AFunction.java:29)
	at clojure.lang.RestFn.applyTo(RestFn.java:137)
	at clojure.core$apply.invoke(core.clj:602)
	at leiningen.core.main$apply_task.invoke(main.clj:75)
	at leiningen.trampoline$trampoline$fn__1754.invoke(trampoline.clj:37)
	at leiningen.trampoline$trampoline.doInvoke(trampoline.clj:36)
	at clojure.lang.RestFn.invoke(RestFn.java:425)
	at clojure.lang.Var.invoke(Var.java:405)
	at clojure.lang.AFn.applyToHelper(AFn.java:163)
	at clojure.lang.Var.applyTo(Var.java:518)
	at clojure.core$apply.invoke(core.clj:602)
	at leiningen.core.main$resolve_task$fn__648.doInvoke(main.clj:54)
	at clojure.lang.RestFn.applyTo(RestFn.java:139)
	at clojure.lang.AFunction$1.doInvoke(AFunction.java:29)
	at clojure.lang.RestFn.applyTo(RestFn.java:137)
	at clojure.core$apply.invoke(core.clj:602)
	at leiningen.core.main$apply_task.invoke(main.clj:75)
	at leiningen.core.main$_main.doInvoke(main.clj:124)
	at clojure.lang.RestFn.invoke(RestFn.java:421)
	at clojure.lang.Var.invoke(Var.java:405)
	at clojure.lang.AFn.applyToHelper(AFn.java:163)
	at clojure.lang.Var.applyTo(Var.java:518)
	at clojure.core$apply.invoke(core.clj:600)
	at clojure.main$main_opt.invoke(main.clj:323)
	at clojure.main$main.doInvoke(main.clj:426)
	at clojure.lang.RestFn.invoke(RestFn.java:457)
	at clojure.lang.Var.invoke(Var.java:413)
	at clojure.lang.AFn.applyToHelper(AFn.java:172)
	at clojure.lang.Var.applyTo(Var.java:518)
	at clojure.main.main(main.java:37)