NoSuchFileException when performing uberjar with spec-alpha2 in deps.

[Michael Nygard]

Description

Attempting to build uberjar for a project that includes Clojure's unreleased spec-alpha2 as a git reference. It reaches a step that says "Including java" and throws an exception:

Cleaning target
Creating target/classes
Creating target/repro-case-1.0.0.jar
Updating pom.xml
Skipping paths: resources
Skipping coordinate: {:git/url https://github.com/clojure/spec-alpha2.git, :sha 2f84e3a37cab76d44c58785ff4481597429bc1d3}
Warning: The Main-Class specified does not exist within the jar. It may not be executable as expected. A gen-class directive may be missing in the namespace which contains the main method, or the namespace has not been AOT-compiled.
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Creating target/repro-case-1.0.0-standalone.jar
  Including repro-case-1.0.0.jar
  Including java
Execution error (NoSuchFileException) at sun.nio.fs.UnixException/translateToIOException (UnixException.java:92).
/root/.gitlibs/libs/org.clojure/spec-alpha2/2f84e3a37cab76d44c58785ff4481597429bc1d3/${project.basedir}/src/main/java

Full report at:
/tmp/clojure-17151214060258308065.edn

A minimal reproduction case is at https://gist.github.com/mtnygard/aaec1ec5ebb50c2405afd40bde40c5b9. That gist includes a deps.edn file that is sufficient to produce the error without any other sources required. The full report produced by cambada is included in that gist.