4clojure - broken 'lein ring server'

gistfile1.txt

$ lein ring server                                                                                                                                                                                    1 ↵
Exception in thread "main" java.lang.ClassNotFoundException: leiningen.ring.run-server (NO_SOURCE_FILE:1)
	at clojure.lang.Compiler.analyzeSeq(Compiler.java:5376)
	at clojure.lang.Compiler.analyze(Compiler.java:5190)
	at clojure.lang.Compiler.analyze(Compiler.java:5151)
	at clojure.lang.Compiler$BodyExpr$Parser.parse(Compiler.java:4670)
	at clojure.lang.Compiler.analyzeSeq(Compiler.java:5369)
	at clojure.lang.Compiler.analyze(Compiler.java:5190)
	at clojure.lang.Compiler.analyze(Compiler.java:5151)
	at clojure.lang.Compiler$BodyExpr$Parser.parse(Compiler.java:4670)
	at clojure.lang.Compiler$TryExpr$Parser.parse(Compiler.java:1833)
	at clojure.lang.Compiler.analyzeSeq(Compiler.java:5369)
	at clojure.lang.Compiler.analyze(Compiler.java:5190)
	at clojure.lang.Compiler.analyze(Compiler.java:5151)
	at clojure.lang.Compiler$BodyExpr$Parser.parse(Compiler.java:4670)
	at clojure.lang.Compiler$FnMethod.parse(Compiler.java:4328)
	at clojure.lang.Compiler$FnExpr.parse(Compiler.java:3173)
	at clojure.lang.Compiler.analyzeSeq(Compiler.java:5367)
	at clojure.lang.Compiler.analyze(Compiler.java:5190)
	at clojure.lang.Compiler.eval(Compiler.java:5421)
	at clojure.lang.Compiler.eval(Compiler.java:5415)
	at clojure.lang.Compiler.eval(Compiler.java:5391)
	at clojure.core$eval.invoke(core.clj:2382)
	at clojure.main$eval_opt.invoke(main.clj:235)
	at clojure.main$initialize.invoke(main.clj:254)
	at clojure.main$null_opt.invoke(main.clj:279)
	at clojure.main$main.doInvoke(main.clj:354)
	at clojure.lang.RestFn.invoke(RestFn.java:421)
	at clojure.lang.Var.invoke(Var.java:369)
	at clojure.lang.AFn.applyToHelper(AFn.java:163)
	at clojure.lang.Var.applyTo(Var.java:482)
	at clojure.main.main(main.java:37)
Caused by: java.lang.ClassNotFoundException: leiningen.ring.run-server
	at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at clojure.lang.DynamicClassLoader.findClass(DynamicClassLoader.java:61)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:247)
	at clojure.lang.RT.classForName(RT.java:1566)
	at clojure.lang.Compiler$HostExpr.maybeClass(Compiler.java:851)
	at clojure.lang.Compiler$HostExpr.access$300(Compiler.java:653)
	at clojure.lang.Compiler.macroexpand1(Compiler.java:5311)
	at clojure.lang.Compiler.analyzeSeq(Compiler.java:5355)
	... 29 more