Failure to `lein voom install` with Date.parse error

We have a new voom version we're trying to promote and are seeing failures with it. The stack trace:

java.lang.IllegalArgumentException: null
 at java.util.Date.parse (Date.java:617)
    java.util.Date.<init> (Date.java:274)
    leiningen.voom$get_voom_version.invokeStatic (voom.clj:132)
    leiningen.voom$get_voom_version.doInvoke (voom.clj:121)
    clojure.lang.RestFn.invoke (RestFn.java:439)
    leiningen.voom$get_project_version.invokeStatic (voom.clj:148)
    leiningen.voom$get_project_version.invoke (voom.clj:146)
    leiningen.voom$wrap.invokeStatic (voom.clj:900)
    leiningen.voom$wrap.doInvoke (voom.clj:884)
    clojure.lang.RestFn.applyTo (RestFn.java:139)
    clojure.core$apply.invokeStatic (core.clj:650)
    clojure.core$apply.invoke (core.clj:641)
    leiningen.voom$install.invokeStatic (voom.clj:919)
    leiningen.voom$install.doInvoke (voom.clj:914)
    clojure.lang.RestFn.invoke (RestFn.java:410)
    clojure.lang.Var.invoke (Var.java:379)
    clojure.lang.AFn.applyToHelper (AFn.java:154)
    clojure.lang.Var.applyTo (Var.java:700)
    clojure.core$apply.invokeStatic (core.clj:648)
    clojure.core$apply.invoke (core.clj:641)
    leiningen.voom$voom.invokeStatic (voom.clj:1384)
    leiningen.voom$voom.doInvoke (voom.clj:1372)
    clojure.lang.RestFn.invoke (RestFn.java:425)
    clojure.lang.Var.invoke (Var.java:383)
    clojure.lang.AFn.applyToHelper (AFn.java:156)
    clojure.lang.Var.applyTo (Var.java:700)
    clojure.core$apply.invokeStatic (core.clj:648)
    clojure.core$apply.invoke (core.clj:641)
    leiningen.core.main$partial_task$fn__5932.doInvoke (main.clj:272)
    clojure.lang.RestFn.applyTo (RestFn.java:139)
    clojure.lang.AFunction$1.doInvoke (AFunction.java:29)
    clojure.lang.RestFn.applyTo (RestFn.java:137)
    clojure.core$apply.invokeStatic (core.clj:648)
    clojure.core$apply.invoke (core.clj:641)
    leiningen.core.main$apply_task.invokeStatic (main.clj:322)
    leiningen.core.main$apply_task.invoke (main.clj:308)
    leiningen.core.main$resolve_and_apply.invokeStatic (main.clj:328)
    leiningen.core.main$resolve_and_apply.invoke (main.clj:324)
    leiningen.core.main$_main$fn__5998.invoke (main.clj:401)
    leiningen.core.main$_main.invokeStatic (main.clj:394)
    leiningen.core.main$_main.doInvoke (main.clj:391)
    clojure.lang.RestFn.invoke (RestFn.java:421)
    clojure.lang.Var.invoke (Var.java:383)
    clojure.lang.AFn.applyToHelper (AFn.java:156)
    clojure.lang.Var.applyTo (Var.java:700)
    clojure.core$apply.invokeStatic (core.clj:646)
    clojure.main$main_opt.invokeStatic (main.clj:314)
    clojure.main$main_opt.invoke (main.clj:310)
    clojure.main$main.invokeStatic (main.clj:421)
    clojure.main$main.doInvoke (main.clj:384)
    clojure.lang.RestFn.invoke (RestFn.java:457)
    clojure.lang.Var.invoke (Var.java:394)
    clojure.lang.AFn.applyToHelper (AFn.java:165)
    clojure.lang.Var.applyTo (Var.java:700)
    clojure.main.main (main.java:37)

We are running 0.1.0-20140716_032004-g85e4c9b in Travis (a private project), but I've replicated this locally with the latest canonical release as well. Locally I'm running

git --version
git version 2.11.0 (Apple Git-81)

java -version
java version "1.8.0_92"
Java(TM) SE Runtime Environment (build 1.8.0_92-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.92-b14, mixed mode)

Installing a local build of lein-voom I've inserted some print statements to show what lein-voom is seeing with the process:

Using 2G max heap since not set via PUPPETSERVER_HEAP_SIZE environment variable or user.puppetserver-heap-size in ~/.lein/profiles.clj file. Set to at least 5G for best performance during test runs.
"**********" "--pretty=%h,%cd" "*********"
"**********" "/Users/justin/Backup/code/work/server/pe-puppet-server-extensions/checkouts/puppet-server" "*********"
"*********" "3f87eb46,2017-08-15\n" "*********"
"****" "3f87eb46" "****" "2017-08-15" "***"
java.lang.IllegalArgumentException: null
 at java.util.Date.parse (Date.java:617)

Updating the code as I have done here: https://github.com/justinstoller/lein-voom/commit/5e6a4fd9c4557130c13ff03147cc57828410c772

seems to fix it for me locally, though I assume on older versions of Java and/or Git it will cause a regression? I'm not sure how it worked previously.

LonoCloud / lein-voom

Failure to `lein voom install` with Date.parse error #58