"make docs" failed in qtwebengine

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agent:2017/06/29 09:10:54 build.go:373: [bash /home/qt/work/qt/qt5/configure -R . -openssl -opensource -confirm-license -nomake tests -verbose -developer-build -qtnamespace TestNamespace -qtlibinfix TestInfix -nomake examples -release]  900
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agent:2017/06/29 09:11:46 build.go:350: Executing instruction 61 of 65
agent:2017/06/29 09:11:46 build.go:373: [make module-qttools]  14400
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agent:2017/06/29 10:19:14 build.go:350: Executing instruction 62 of 65
agent:2017/06/29 10:19:14 build.go:373: [make docs]  1200
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make[6]: Entering directory '/home/qt/work/build/qtwebengine/src/core'
make[6]: Nothing to be done for 'prepare_docs'.
make[6]: Leaving directory '/home/qt/work/build/qtwebengine/src/core'
make[5]: Leaving directory '/home/qt/work/build/qtwebengine/src/core'
cd process/ && ( test -e Makefile || /home/qt/work/build/qtbase/bin/qmake -o Makefile /home/qt/work/qt/qt5/qtwebengine/src/process/process.pro ) && make -f Makefile prepare_docs
cd tools/qwebengine_convert_dict/ && ( test -e Makefile || /home/qt/work/build/qtbase/bin/qmake -o Makefile /home/qt/work/qt/qt5/qtwebengine/src/tools/qwebengine_convert_dict/qwebengine_convert_dict.pro ) && make -f Makefile prepare_docs
cd webengine/ && ( test -e Makefile || /home/qt/work/build/qtbase/bin/qmake -o Makefile /home/qt/work/qt/qt5/qtwebengine/src/webengine/webengine.pro ) && make -f Makefile prepare_docs
Project MESSAGE: perl -w /home/qt/work/qt/qt5/qtbase/bin/syncqt.pl -check-includes -module QtWebEngine -version 5.10.0 -outdir /home/qt/work/build/qtbase /home/qt/work/qt/qt5/qtwebengine
WARNING: Failure to find: /home/qt/work/build/qtwebengine/src/core/Release/obj/chrome/tools/convert_dict/lib/aff_reader.o
WARNING: Failure to find: /home/qt/work/build/qtwebengine/src/core/Release/obj/chrome/tools/convert_dict/lib/dic_reader.o
WARNING: Failure to find: /home/qt/work/build/qtwebengine/src/core/Release/obj/chrome/tools/convert_dict/lib/hunspell_reader.o
<srcbase> = /home/qt/work/qt/qt5/qtwebengine 
<outbase> = /home/qt/work/build/qtbase 
QtWebEngine: created fwd-include header(s) for <srcbase>/src/webengine/api/ { qquickwebenginecertificateerror_p.h (1), qquickwebenginecontextmenurequest_p.h (1), qquickwebenginedialogrequests_p.h (1), qquickwebenginedownloaditem_p.h (1), qquickwebenginedownloaditem_p_p.h (1), qquickwebenginefaviconprovider_p_p.h (1), qquickwebenginehistory_p.h (1), qquickwebenginehistory_p_p.h (1), qquickwebengineloadrequest_p.h (1), qquickwebenginenavigationrequest_p.h (1), qquickwebenginenewviewrequest_p.h (1), qquickwebengineprofile.h (2), qquickwebengineprofile_p.h (1), qquickwebenginescript.h (2), qquickwebenginescript_p.h (1), qquickwebenginesettings_p.h (1), qquickwebenginesingleton_p.h (1), qquickwebenginetestsupport_p.h (1), qquickwebengineview_p.h (1), qquickwebengineview_p_p.h (1), qtwebengineglobal.h (1), qtwebengineglobal_p.h (1) }
QtWebEngine: created version header
QtWebEngine: created master header
QtWebEngine: created headers.pri file
make[5]: Entering directory '/home/qt/work/build/qtwebengine/src/process'
make[5]: Nothing to be done for 'prepare_docs'.
make[5]: Leaving directory '/home/qt/work/build/qtwebengine/src/process'
make[5]: Entering directory '/home/qt/work/build/qtwebengine/src/tools/qwebengine_convert_dict'
make[5]: Nothing to be done for 'prepare_docs'.
make[5]: Leaving directory '/home/qt/work/build/qtwebengine/src/tools/qwebengine_convert_dict'
make[5]: Entering directory '/home/qt/work/build/qtwebengine/src/webengine'
cd /home/qt/work/qt/qt5/qtwebengine/src/webengine/../3rdparty && python chromium/tools/licenses.py --file-template ../../tools/about_credits.tmpl --entry-template ../../tools/about_credits_entry.tmpl credits /home/qt/work/build/qtwebengine/src/webengine/chromium_attributions.qdoc
/home/qt/work/build/qtwebengine/src/webengine/qtattributionsscanner_wrapper.sh /home/qt/work/qt/qt5/qtwebengine --filter QDocModule=qtwebengine -o /home/qt/work/build/qtwebengine/src/webengine/codeattributions.qdoc
Traceback (most recent call last):
  File "chromium/tools/licenses.py", line 27, in <module>
    import build_utils
  File "chromium/build/android/gyp/util/build_utils.py", line 24, in <module>
    from pylib.constants import host_paths
  File "chromium/build/android/gyp/util/../../pylib/constants/__init__.py", line 17, in <module>
    import devil.android.sdk.keyevent
ImportError: No module named devil.android.sdk.keyevent
Makefile:2578: recipe for target 'chromium_attributions' failed
make[5]: *** [chromium_attributions] Error 1
make[5]: *** Waiting for unfinished jobs....
make[5]: Leaving directory '/home/qt/work/build/qtwebengine/src/webengine'
Makefile:1040: recipe for target 'sub-webengine-prepare_docs' failed
make[4]: *** [sub-webengine-prepare_docs] Error 2
make[4]: Leaving directory '/home/qt/work/build/qtwebengine/src'
Makefile:617: recipe for target 'sub-src-prepare_docs' failed
make[3]: *** [sub-src-prepare_docs] Error 2
make[3]: Leaving directory '/home/qt/work/build/qtwebengine'
Makefile:2336: recipe for target 'module-qtwebengine-prepare_docs' failed
make[2]: *** [module-qtwebengine-prepare_docs] Error 2
make[2]: Leaving directory '/home/qt/work/build'
Makefile:1302: recipe for target 'html_docs' failed
make[1]: *** [html_docs] Error 2
make[1]: Leaving directory '/home/qt/work/build'
Makefile:1305: recipe for target 'docs' failed
make: *** [docs] Error 2
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