Issues with Jenkins and clisp

[Robert Goldman]

For some reason, the ASDF tests are failing on Jenkins on linux with 
clisp, but *only when run in Jenkins and only for clisp*.  At the 
command line, all the tests pass for me.

Under Jenkins, I get this failure on `test-program.script`:

```
;; Loading file test-program.script ...
FOO
   (UIOP/LISP-BUILD:CURRENT-LISP-FILE-PATHNAME) => 
#P"test-program.script"
; Registering system hello-world-example
0 errors, 0 warnings
;;  Loading file 
/var/lib/jenkins/workspace/asdf/test/hello-world-example.asd ...
;;  Loaded file 
/var/lib/jenkins/workspace/asdf/test/hello-world-example.asd
0 errors, 0 warnings
0 errors, 0 warnings
; Registering system lisp-invocation
;;  Loading file /var/lib/jenkins/workspace/asdf/asdf.asd ...
;;  Loaded file /var/lib/jenkins/workspace/asdf/asdf.asd
0 errors, 0 warnings
;;  Loading file 
/var/lib/jenkins/workspace/asdf/build/fasls/clisp-2.49.60+-unix-x64/asdf/build/asdf.fas 
...
;;  Loaded file 
/var/lib/jenkins/workspace/asdf/build/fasls/clisp-2.49.60+-unix-x64/asdf/build/asdf.fas
0 errors, 326 warnings
;;  Loading file 
/var/lib/jenkins/workspace/asdf/ext/lisp-invocation/lisp-invocation.asd 
...
;;  Loaded file 
/var/lib/jenkins/workspace/asdf/ext/lisp-invocation/lisp-invocation.asd
0 errors, 0 warnings
0 errors, 0 warnings
0 errors, 0 warnings
;;  Loading file 
/var/lib/jenkins/workspace/asdf/ext/lisp-invocation/lisp-invocation.asd 
...
;;  Loaded file 
/var/lib/jenkins/workspace/asdf/ext/lisp-invocation/lisp-invocation.asd
0 errors, 0 warnings
0 errors, 0 warnings
0 errors, 0 warnings
0 errors, 0 warnings
;;  Loading file 
/var/lib/jenkins/workspace/asdf/ext/fare-utils/fare-utils.asd ...
;;  Loaded file 
/var/lib/jenkins/workspace/asdf/ext/fare-utils/fare-utils.asd
0 errors, 0 warnings
*** - handle_fault error2 ! address = 0x55a16f64c670 not in 
[0x5575be29b000,0x5575be657030) !
SIGSEGV cannot be cured. Fault address = 0x55a16f64c670.
GC count: 65
Space collected by GC: 74922832
Run time: 0 874720
Real time: 1 803489
GC time: 0 179953
Permanently allocated: 165368 bytes.
Currently in use: 5850000 bytes.
Free space: 1462440 bytes.
Segmentation fault (core dumped)
Using clisp, test-program.script failed
```

This is with the latest release (but ancient) clisp.

It looks like it's not even making it through the preliminary loading 
process, since we don't see the "test image-op" debugging output.

My guess is that this is not a real asdf failure, but instead is clisp 
being unable to find some piece of tool-age that it needs in order to 
build a program.

But this happened only after (1) load-asdf changed and (2) 
`source-file-type` was deprecated.  Neither of those seems obviously 
connected to this issue.

Any hypotheses or suggestions for debugging?
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