Seen on berlin: --8<---------------cut here---------------start------------->8--- [ 81%] Generating ../../DerivedSources/WebKit2/NPObjectMessageReceiverMessageReceiver.cpp, ../../DerivedSources/WebKit2/NPObjectMessageReceiverMessages.h cd /tmp/guix-build-qtwebkit-5.212.0-alpha2.drv-0/qtwebkit-5.212.0-alpha2/Source/WebKit2 && /gnu/store/g87hamjyipk1j6dfq5pjfzfnfb64spbv-python2-2.7.15/bin/python2.7 /tmp/g uix-build-qtwebkit-5.212.0-alpha2.drv-0/qtwebkit-5.212.0-alpha2/Source/WebKit2/Scripts/generate-message-receiver.py Shared/Plugins/NPObjectMessageReceiver.messages.in > / tmp/guix-build-qtwebkit-5.212.0-alpha2.drv-0/build/DerivedSources/WebKit2/NPObjectMessageReceiverMessageReceiver.cpp [ 81%] Generating ../../DerivedSources/WebKit2/DrawingAreaProxyMessageReceiver.cpp, ../../DerivedSources/WebKit2/DrawingAreaProxyMessages.h [ 81%] Generating ../../DerivedSources/WebKit2/VisitedLinkStoreMessageReceiver.cpp, ../../DerivedSources/WebKit2/VisitedLinkStoreMessages.h [ 81%] Generating ../../DerivedSources/WebKit2/WebBatteryManagerProxyMessageReceiver.cpp, ../../DerivedSources/WebKit2/WebBatteryManagerProxyMessages.h cd /tmp/guix-build-qtwebkit-5.212.0-alpha2.drv-0/qtwebkit-5.212.0-alpha2/Source/WebKit2 && /gnu/store/g87hamjyipk1j6dfq5pjfzfnfb64spbv-python2-2.7.15/bin/python2.7 /tmp/g uix-build-qtwebkit-5.212.0-alpha2.drv-0/qtwebkit-5.212.0-alpha2/Source/WebKit2/Scripts/generate-message-receiver.py UIProcess/DrawingAreaProxy.messages.in > /tmp/guix-bui ld-qtwebkit-5.212.0-alpha2.drv-0/build/DerivedSources/WebKit2/DrawingAreaProxyMessageReceiver.cpp cd /tmp/guix-build-qtwebkit-5.212.0-alpha2.drv-0/qtwebkit-5.212.0-alpha2/Source/WebKit2 && /gnu/store/g87hamjyipk1j6dfq5pjfzfnfb64spbv-python2-2.7.15/bin/python2.7 /tmp/g uix-build-qtwebkit-5.212.0-alpha2.drv-0/qtwebkit-5.212.0-alpha2/Source/WebKit2/Scripts/generate-message-receiver.py UIProcess/VisitedLinkStore.messages.in > /tmp/guix-bui ld-qtwebkit-5.212.0-alpha2.drv-0/build/DerivedSources/WebKit2/VisitedLinkStoreMessageReceiver.cpp cd /tmp/guix-build-qtwebkit-5.212.0-alpha2.drv-0/qtwebkit-5.212.0-alpha2/Source/WebKit2 && /gnu/store/g87hamjyipk1j6dfq5pjfzfnfb64spbv-python2-2.7.15/bin/python2.7 /tmp/g uix-build-qtwebkit-5.212.0-alpha2.drv-0/qtwebkit-5.212.0-alpha2/Source/WebKit2/Scripts/generate-message-receiver.py UIProcess/WebBatteryManagerProxy.messages.in > /tmp/gu ix-build-qtwebkit-5.212.0-alpha2.drv-0/build/DerivedSources/WebKit2/WebBatteryManagerProxyMessageReceiver.cpp [ 81%] Generating ../../DerivedSources/WebKit2/WebCookieManagerProxyMessageReceiver.cpp, ../../DerivedSources/WebKit2/WebCookieManagerProxyMessages.h cd /tmp/guix-build-qtwebkit-5.212.0-alpha2.drv-0/qtwebkit-5.212.0-alpha2/Source/WebKit2 && /gnu/store/g87hamjyipk1j6dfq5pjfzfnfb64spbv-python2-2.7.15/bin/python2.7 /tmp/g uix-build-qtwebkit-5.212.0-alpha2.drv-0/qtwebkit-5.212.0-alpha2/Source/WebKit2/Scripts/generate-message-receiver.py UIProcess/WebCookieManagerProxy.messages.in > /tmp/gui x-build-qtwebkit-5.212.0-alpha2.drv-0/build/DerivedSources/WebKit2/WebCookieManagerProxyMessageReceiver.cpp [ 81%] Generating ../../DerivedSources/WebKit2/WebFullScreenManagerProxyMessageReceiver.cpp, ../../DerivedSources/WebKit2/WebFullScreenManagerProxyMessages.h cd /tmp/guix-build-qtwebkit-5.212.0-alpha2.drv-0/qtwebkit-5.212.0-alpha2/Source/WebKit2 && /gnu/store/g87hamjyipk1j6dfq5pjfzfnfb64spbv-python2-2.7.15/bin/python2.7 /tmp/g uix-build-qtwebkit-5.212.0-alpha2.drv-0/qtwebkit-5.212.0-alpha2/Source/WebKit2/Scripts/generate-message-receiver.py UIProcess/WebFullScreenManagerProxy.messages.in > /tmp /guix-build-qtwebkit-5.212.0-alpha2.drv-0/build/DerivedSources/WebKit2/WebFullScreenManagerProxyMessageReceiver.cpp Traceback (most recent call last): File "/tmp/guix-build-qtwebkit-5.212.0-alpha2.drv-0/qtwebkit-5.212.0-alpha2/Source/WebKit2/Scripts/generate-message-receiver.py", line 28, in <module> import webkit.messages ValueError: bad marshal data (string size out of range) [ 81%] Generating ../../DerivedSources/WebKit2/WebGeolocationManagerProxyMessageReceiver.cpp, ../../DerivedSources/WebKit2/WebGeolocationManagerProxyMessages.h cd /tmp/guix-build-qtwebkit-5.212.0-alpha2.drv-0/qtwebkit-5.212.0-alpha2/Source/WebKit2 && /gnu/store/g87hamjyipk1j6dfq5pjfzfnfb64spbv-python2-2.7.15/bin/python2.7 /tmp/g uix-build-qtwebkit-5.212.0-alpha2.drv-0/qtwebkit-5.212.0-alpha2/Source/WebKit2/Scripts/generate-message-receiver.py UIProcess/WebGeolocationManagerProxy.messages.in > /tmp/guix-build-qtwebkit-5.212.0-alpha2.drv-0/build/DerivedSources/WebKit2/WebGeolocationManagerProxyMessageReceiver.cpp make[2]: *** [Source/WebKit2/CMakeFiles/WebKit2.dir/build.make:254: DerivedSources/WebKit2/VisitedLinkStoreMessageReceiver.cpp] Error 1 make[2]: *** Deleting file 'DerivedSources/WebKit2/VisitedLinkStoreMessageReceiver.cpp' --8<---------------cut here---------------end--------------->8---
Looks like a non-parallel-safe Makefile. Ludo’.