ClassNotFoundException and ClassCastException with lein-droid - clojure

Question

When building a lein-droid project with [clj-http "0.7.7"] as a dependency in project.clj, it fails with the following error [0]:
Compiling cheshire.jsonp
Exception in thread "main" java.lang.ClassNotFoundException: javax.json.Json, compiling:(jsonp.clj:1:1)
[...]
Caused by: java.lang.ClassNotFoundException: javax.json.Json
[...]
Replacing the dependency with [cheshire "5.2.0"] (current version) produces the same error. Lowering the version to "5.1.1" removes this error.
Adding [clj-http "0.7.7"] as a dependency to the project introduces a new error [1]:
Compiling clj-http.conn-mgr
Exception in thread "main" java.lang.ClassCastException clj_http.conn_mgr$fn$reify__20 cannot be cast to java.security.KeyStore, compiling:(conn_mgr.clj:13:3)
[...]
Caused by: java.lang.ClassCastException: clj_http.conn_mgr$fn$reify__20 cannot be cast to java.security.KeyStore
[...]
Relevant settings from project.clj (set from the lein-droid tutorial):
:javac-options ["-target" "1.6" "-source" "1.6" "-Xlint:-options"]
:android { ...
:target-version "16"
...}
Changing these settings to the current version numbers doesn't change the error.
With cheshire 5.2.0
» lein deps :tree
WARNING!!! possible confusing dependencies found:
[clojure-complete "0.2.3"]
overrides
[clojure-complete "0.2.3"]
[cheshire "5.1.1"]
overrides
[clj-http "0.7.7"] -> [cheshire "5.2.0"]
Without cheshire in dependencies
» lein deps :tree
WARNING!!! possible confusing dependencies found:
[org.clojure/data.json "0.2.3"] -> [org.clojure/clojure "1.4.0"]
overrides
[clj-http "0.7.7"] -> [cheshire "5.2.0"] -> [tigris "0.1.1"] -> [org.clojure/clojure "1.5.1"]
[clojure-complete "0.2.3"]
overrides
[clojure-complete "0.2.3"]