Windows: CCL build hangs

[phoe]

I rebuild CCL via (progn (ccl:rebuild-ccl :full t :verbose t) (ccl:quit)). Sometimes, at the end of the building process, the newest CCL master hangs with 0% CPU usage shown in top:

...
;Loading ./bin/ccl-export-syms.wx64fsl
;Loading ./l1-fasls/version.wx64fsl
;Loading H:/tools/msys64/home/emiherd/ccl/bin/jp-encode.wx64fsl
;Loading H:/tools/msys64/home/emiherd/ccl/bin/cn-encode.wx64fsl
;Loading H:/tools/msys64/home/emiherd/ccl/library/lispequ.wx64fsl
;Loading H:/tools/msys64/home/emiherd/ccl/library/sockets.wx64fsl
his file and in "ccl:l1;l1-files.lisp.newest"

Interrupting CCL with Ctrl+C simply kills the process instead of dropping into the debugger.

This issue was reproduced on Travis: https://travis-ci.com/phoe-trash/ccl/jobs/250105562

Attaching full compilation log.

How should I start debugging this issue? Which Windows utility will show me what CCL hangs on? Is this a duplicate of #24?

(As a sidenote, there are some printing issues, possibly related to multithreading - the his file and in "ccl:l1;l1-files.lisp.newest" seen at the end of the log is a part of a line from much higher above.)

[phoe]

Looks like a duplicate - closing this issue.