Compilation exceptions are not thread-safe

[algoterranean]

A lot of the time, when running lein clr compile :all (for example), and I get a compilation exception, the initial part of the error output is interwoven, as though the error output is not thread-safe. Perhaps this has to do with using apply over str or print on a lazy list?

For example:

/tmp/foo $ lein clr compile :all

MUisnshianngd fielledd OEuxtcVeaprt iion:
nS yclsastse cml.oIjOu.rFei.lleaNngo.tRFTo u(ntdyEpxec etpokteino n1:6 7C7o7u2l3d5)
not load file or assembly 'Clojure, Version=1.7.0.0, Culture=neutral, PublicKeyToken=cf3caecd327a2fa9' or one of its dependencies.
File name: 'Clojure, Version=1.7.0.0, Culture=neutral, PublicKeyToken=cf3caecd327a2fa9'
[ERROR] FATAL UNHANDLED EXCEPTION: System.IO.FileNotFoundException: Could not load file or assembly 'Clojure, Version=1.7.0.0, Culture=neutral, PublicKeyToken=cf3caecd327a2fa9' or one of its dependencies.
File name: 'Clojure, Version=1.7.0.0, Culture=neutral, PublicKeyToken=cf3caecd327a2fa9'
1

When the expected output would be:

/tmp/foo $ lein clr compile :all
Missing field OutVar in class clojure.lang.RT (type token 16777235)

Unhandled Exception:
System.IO.FileNotFoundException: Could not load file or assembly 'Clojure, Version=1.7.0.0, Culture=neutral, PublicKeyToken=cf3caecd327a2fa9' or one of its dependencies.
File name: 'Clojure, Version=1.7.0.0, Culture=neutral, PublicKeyToken=cf3caecd327a2fa9'
[ERROR] FATAL UNHANDLED EXCEPTION: System.IO.FileNotFoundException: Could not load file or assembly 'Clojure, Version=1.7.0.0, Culture=neutral, PublicKeyToken=cf3caecd327a2fa9' or one of its dependencies.
File name: 'Clojure, Version=1.7.0.0, Culture=neutral, PublicKeyToken=cf3caecd327a2fa9'
1

/edit P.S. This is on OSX, Mono 3.10.0 and on both lein-clr 0.2.1 and 0.2.2, looks like.

[kumarshantanu]

Source (for posterity): https://groups.google.com/forum/#!topic/clojure-clr/64530_MBZyQ