Building qemu invariably results in the following:

PASS: tests/test-filter-redirector
TEST: tests/postcopy-test... (pid=25237)
  /i386/postcopy:                                                      building of `/gnu/store/rjbql3m2w6mcy0l21m5r6jkaz8mw8z4r-qemu-2.7.0.drv' timed out after 3600 seconds of silence
@ build-failed /gnu/store/rjbql3m2w6mcy0l21m5r6jkaz8mw8z4r-qemu-2.7.0.drv - timeout
guix build: error: build failed: build of `/gnu/store/rjbql3m2w6mcy0l21m5r6jkaz8mw8z4r-qemu-2.7.0.drv' failed


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