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For the usual homebrew update problems:

2020-07-31T02:19:59.4766700Z ==> Installing osrf/simulation/gazebo11
2020-07-31T02:20:15.2296560Z ==> Patching
2020-07-31T02:20:15.2297100Z ==> Applying brew_python_fix.patch
2020-07-31T02:20:15.2430950Z patching file deps/opende/CMakeLists.txt
2020-07-31T02:20:15.2475190Z ==> cmake .. -DQWT_WIN_INCLUDE_DIR=/usr/local/lib/qwt.framework/Headers -DQWT_WIN_LIBRARY_DIR=/usr/local/lib/qwt.framework
2020-07-31T02:21:11.2612540Z ==> make install
2020-07-31T02:45:52.7464010Z Last 15 lines from /Users/runner/Library/Logs/Homebrew/gazebo11/02.make:
2020-07-31T02:45:52.8097010Z cd /tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/build/gazebo && /usr/local/Homebrew/Library/Homebrew/shims/mac/super/clang++ -DBOOST_ALL_NO_LIB -DBOOST_DATE_TIME_DYN_LINK -DBOOST_FILESYSTEM_DYN_LINK -DBOOST_IOSTREAMS_DYN_LINK -DBOOST_PROGRAM_OPTIONS_DYN_LINK -DBOOST_REGEX_DYN_LINK -DBOOST_SYSTEM_DYN_LINK -DBOOST_TEST_DYN_LINK -DBOOST_THREAD_DYN_LINK -DBUILDING_DLL -DHAVE_OPENGL -DLIBBULLET_VERSION=2.89 -DLIBBULLET_VERSION_GT_282 -DMAC_OS_X_VERSION=1080 -Dlibgazebo_EXPORTS -I/tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/test/gtest/include -I/tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0 -I/tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/build -I/usr/local/Cellar/ffmpeg/4.3.1/include -I/usr/local/Cellar/libusb/1.0.23/include/libusb-1.0 -isystem /usr/local/Cellar/tinyxml2/8.0.0/include -isystem /usr/local/include/ignition/msgs5 -isystem /usr/local/include/ignition/math6 -isystem /usr/local/include/ignition/transport8 -isystem /usr/local/include/ignition/common3 -isystem /usr/local/include/ignition/fuel_tools4 -iframework /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/System/Library/Frameworks -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include/OGRE/RTShaderSystem -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include/OGRE -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include/OGRE/Terrain -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include/OGRE/Paging -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include/OGRE/Overlay -isystem /usr/local/Cellar/sdformat9/9.2.0_3/include/sdformat-9.2 -isystem /usr/local/opt/tinyxml/include -isystem /usr/local/Cellar/ossp-uuid/1.6.2_2/include/ossp -isystem /usr/local/include/sdformat-9.2/sdf/.. -isystem /usr/local/Cellar/tbb/2020_U2/include -isystem /usr/local/include/ignition/cmake2 -isystem /usr/local/include/eigen3 -isystem /usr/local/include/bullet -isystem /usr/local/Cellar/urdfdom/1.0.4_2/include -isystem /usr/local/lib/urdfdom_headers/cmake/../../../include -isystem /usr/local/include/simbody -stdlib=libc++  -Wall -Wextra -Wno-long-long -Wno-unused-value -Wfloat-equal -Wshadow -Wswitch-default -Wmissing-include-dirs -pedantic -std=c++11  -s -O3 -DNDEBUG -mssse3 -msse3 -msse -msse2  -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -fPIC   -fPIC -I/usr/local/Cellar/ossp-uuid/1.6.2_2/include/ossp -std=c++17 -o CMakeFiles/libgazebo.dir/Server.cc.o -c /tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/gazebo/Server.cc
2020-07-31T02:45:52.8098260Z [ 72%] Building CXX object gazebo/CMakeFiles/libgazebo.dir/Master.cc.o
2020-07-31T02:45:52.8101830Z cd /tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/build/gazebo && /usr/local/Homebrew/Library/Homebrew/shims/mac/super/clang++ -DBOOST_ALL_NO_LIB -DBOOST_DATE_TIME_DYN_LINK -DBOOST_FILESYSTEM_DYN_LINK -DBOOST_IOSTREAMS_DYN_LINK -DBOOST_PROGRAM_OPTIONS_DYN_LINK -DBOOST_REGEX_DYN_LINK -DBOOST_SYSTEM_DYN_LINK -DBOOST_TEST_DYN_LINK -DBOOST_THREAD_DYN_LINK -DBUILDING_DLL -DHAVE_OPENGL -DLIBBULLET_VERSION=2.89 -DLIBBULLET_VERSION_GT_282 -DMAC_OS_X_VERSION=1080 -Dlibgazebo_EXPORTS -I/tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/test/gtest/include -I/tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0 -I/tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/build -I/usr/local/Cellar/ffmpeg/4.3.1/include -I/usr/local/Cellar/libusb/1.0.23/include/libusb-1.0 -isystem /usr/local/Cellar/tinyxml2/8.0.0/include -isystem /usr/local/include/ignition/msgs5 -isystem /usr/local/include/ignition/math6 -isystem /usr/local/include/ignition/transport8 -isystem /usr/local/include/ignition/common3 -isystem /usr/local/include/ignition/fuel_tools4 -iframework /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/System/Library/Frameworks -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include/OGRE/RTShaderSystem -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include/OGRE -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include/OGRE/Terrain -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include/OGRE/Paging -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include/OGRE/Overlay -isystem /usr/local/Cellar/sdformat9/9.2.0_3/include/sdformat-9.2 -isystem /usr/local/opt/tinyxml/include -isystem /usr/local/Cellar/ossp-uuid/1.6.2_2/include/ossp -isystem /usr/local/include/sdformat-9.2/sdf/.. -isystem /usr/local/Cellar/tbb/2020_U2/include -isystem /usr/local/include/ignition/cmake2 -isystem /usr/local/include/eigen3 -isystem /usr/local/include/bullet -isystem /usr/local/Cellar/urdfdom/1.0.4_2/include -isystem /usr/local/lib/urdfdom_headers/cmake/../../../include -isystem /usr/local/include/simbody -stdlib=libc++  -Wall -Wextra -Wno-long-long -Wno-unused-value -Wfloat-equal -Wshadow -Wswitch-default -Wmissing-include-dirs -pedantic -std=c++11  -s -O3 -DNDEBUG -mssse3 -msse3 -msse -msse2  -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -fPIC   -fPIC -I/usr/local/Cellar/ossp-uuid/1.6.2_2/include/ossp -std=c++17 -o CMakeFiles/libgazebo.dir/Master.cc.o -c /tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/gazebo/Master.cc
2020-07-31T02:45:52.8102910Z [ 72%] Building CXX object gazebo/CMakeFiles/libgazebo.dir/gazebo.cc.o
2020-07-31T02:45:52.8106030Z cd /tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/build/gazebo && /usr/local/Homebrew/Library/Homebrew/shims/mac/super/clang++ -DBOOST_ALL_NO_LIB -DBOOST_DATE_TIME_DYN_LINK -DBOOST_FILESYSTEM_DYN_LINK -DBOOST_IOSTREAMS_DYN_LINK -DBOOST_PROGRAM_OPTIONS_DYN_LINK -DBOOST_REGEX_DYN_LINK -DBOOST_SYSTEM_DYN_LINK -DBOOST_TEST_DYN_LINK -DBOOST_THREAD_DYN_LINK -DBUILDING_DLL -DHAVE_OPENGL -DLIBBULLET_VERSION=2.89 -DLIBBULLET_VERSION_GT_282 -DMAC_OS_X_VERSION=1080 -Dlibgazebo_EXPORTS -I/tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/test/gtest/include -I/tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0 -I/tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/build -I/usr/local/Cellar/ffmpeg/4.3.1/include -I/usr/local/Cellar/libusb/1.0.23/include/libusb-1.0 -isystem /usr/local/Cellar/tinyxml2/8.0.0/include -isystem /usr/local/include/ignition/msgs5 -isystem /usr/local/include/ignition/math6 -isystem /usr/local/include/ignition/transport8 -isystem /usr/local/include/ignition/common3 -isystem /usr/local/include/ignition/fuel_tools4 -iframework /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/System/Library/Frameworks -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include/OGRE/RTShaderSystem -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include/OGRE -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include/OGRE/Terrain -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include/OGRE/Paging -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include/OGRE/Overlay -isystem /usr/local/Cellar/sdformat9/9.2.0_3/include/sdformat-9.2 -isystem /usr/local/opt/tinyxml/include -isystem /usr/local/Cellar/ossp-uuid/1.6.2_2/include/ossp -isystem /usr/local/include/sdformat-9.2/sdf/.. -isystem /usr/local/Cellar/tbb/2020_U2/include -isystem /usr/local/include/ignition/cmake2 -isystem /usr/local/include/eigen3 -isystem /usr/local/include/bullet -isystem /usr/local/Cellar/urdfdom/1.0.4_2/include -isystem /usr/local/lib/urdfdom_headers/cmake/../../../include -isystem /usr/local/include/simbody -stdlib=libc++  -Wall -Wextra -Wno-long-long -Wno-unused-value -Wfloat-equal -Wshadow -Wswitch-default -Wmissing-include-dirs -pedantic -std=c++11  -s -O3 -DNDEBUG -mssse3 -msse3 -msse -msse2  -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -fPIC   -fPIC -I/usr/local/Cellar/ossp-uuid/1.6.2_2/include/ossp -std=c++17 -o CMakeFiles/libgazebo.dir/gazebo.cc.o -c /tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/gazebo/gazebo.cc
2020-07-31T02:45:52.8106830Z make[1]: *** [gazebo/gui/CMakeFiles/gazebo_gui.dir/all] Error 2
2020-07-31T02:45:52.8107080Z make[1]: *** Waiting for unfinished jobs....
2020-07-31T02:45:52.8107200Z [ 72%] Building CXX object gazebo/CMakeFiles/libgazebo.dir/gazebo_shared.cc.o
2020-07-31T02:45:52.8110310Z cd /tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/build/gazebo && /usr/local/Homebrew/Library/Homebrew/shims/mac/super/clang++ -DBOOST_ALL_NO_LIB -DBOOST_DATE_TIME_DYN_LINK -DBOOST_FILESYSTEM_DYN_LINK -DBOOST_IOSTREAMS_DYN_LINK -DBOOST_PROGRAM_OPTIONS_DYN_LINK -DBOOST_REGEX_DYN_LINK -DBOOST_SYSTEM_DYN_LINK -DBOOST_TEST_DYN_LINK -DBOOST_THREAD_DYN_LINK -DBUILDING_DLL -DHAVE_OPENGL -DLIBBULLET_VERSION=2.89 -DLIBBULLET_VERSION_GT_282 -DMAC_OS_X_VERSION=1080 -Dlibgazebo_EXPORTS -I/tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/test/gtest/include -I/tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0 -I/tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/build -I/usr/local/Cellar/ffmpeg/4.3.1/include -I/usr/local/Cellar/libusb/1.0.23/include/libusb-1.0 -isystem /usr/local/Cellar/tinyxml2/8.0.0/include -isystem /usr/local/include/ignition/msgs5 -isystem /usr/local/include/ignition/math6 -isystem /usr/local/include/ignition/transport8 -isystem /usr/local/include/ignition/common3 -isystem /usr/local/include/ignition/fuel_tools4 -iframework /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/System/Library/Frameworks -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include/OGRE/RTShaderSystem -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include/OGRE -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include/OGRE/Terrain -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include/OGRE/Paging -isystem /usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/include/OGRE/Overlay -isystem /usr/local/Cellar/sdformat9/9.2.0_3/include/sdformat-9.2 -isystem /usr/local/opt/tinyxml/include -isystem /usr/local/Cellar/ossp-uuid/1.6.2_2/include/ossp -isystem /usr/local/include/sdformat-9.2/sdf/.. -isystem /usr/local/Cellar/tbb/2020_U2/include -isystem /usr/local/include/ignition/cmake2 -isystem /usr/local/include/eigen3 -isystem /usr/local/include/bullet -isystem /usr/local/Cellar/urdfdom/1.0.4_2/include -isystem /usr/local/lib/urdfdom_headers/cmake/../../../include -isystem /usr/local/include/simbody -stdlib=libc++  -Wall -Wextra -Wno-long-long -Wno-unused-value -Wfloat-equal -Wshadow -Wswitch-default -Wmissing-include-dirs -pedantic -std=c++11  -s -O3 -DNDEBUG -mssse3 -msse3 -msse -msse2  -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -fPIC   -fPIC -I/usr/local/Cellar/ossp-uuid/1.6.2_2/include/ossp -std=c++17 -o CMakeFiles/libgazebo.dir/gazebo_shared.cc.o -c /tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/gazebo/gazebo_shared.cc
2020-07-31T02:45:52.8110970Z [ 72%] Linking CXX shared library libgazebo.dylib
2020-07-31T02:45:52.8111680Z cd /tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/build/gazebo && /usr/local/Cellar/cmake/3.18.1/bin/cmake -E cmake_link_script CMakeFiles/libgazebo.dir/link.txt --verbose=1
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-Wl,-rpath,/tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/build/deps/opende/ou -Wl,-rpath,/tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/build/deps/opende/OPCODE -Wl,-rpath,/tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/build/gazebo/transport -Wl,-rpath,/tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/build/gazebo/msgs -Wl,-rpath,/tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/build/gazebo/common sensors/libgazebo_sensors.11.0.0.dylib rendering/libgazebo_rendering.11.0.0.dylib -lpthread physics/libgazebo_physics.11.0.0.dylib util/libgazebo_util.11.0.0.dylib -ltinyxml2 ../deps/opende/libgazebo_ode.11.0.0.dylib ../deps/opende/GIMPACT/libgazebo_gimpact.11.0.0.dylib ../deps/opende/ou/libgazebo_opende_ou.11.0.0.dylib ../deps/opende/OPCODE/libgazebo_opcode.11.0.0.dylib -lBulletSoftBody -lBulletDynamics -lBulletCollision -lLinearMath /usr/local/lib/libdart-collision-bullet.6.9.2.dylib /usr/local/lib/libBulletDynamics.dylib /usr/local/lib/libBulletCollision.dylib /usr/local/lib/libLinearMath.dylib /usr/local/lib/libBulletSoftBody.dylib /usr/local/lib/libdart-collision-ode.6.9.2.dylib /usr/local/lib/libode.dylib /usr/local/lib/libdart-utils-urdf.6.9.2.dylib /usr/local/lib/libdart-utils.6.9.2.dylib /usr/local/lib/libtinyxml2.dylib /usr/local/Cellar/urdfdom/1.0.4_2/lib/liburdfdom_sensor.dylib /usr/local/Cellar/urdfdom/1.0.4_2/lib/liburdfdom_model_state.dylib /usr/local/Cellar/urdfdom/1.0.4_2/lib/liburdfdom_model.dylib /usr/local/Cellar/urdfdom/1.0.4_2/lib/liburdfdom_world.dylib /usr/local/lib/libconsole_bridge.1.0.dylib /usr/local/lib/libdart.6.9.2.dylib /usr/local/lib/libccd.2.0.dylib /usr/lib/libm.dylib /usr/local/lib/libdart-external-odelcpsolver.6.9.2.dylib /usr/local/Cellar/fcl/0.6.1/lib/libfcl.dylib /usr/local/lib/libassimp.dylib /usr/local/lib/liboctomap.1.9.5.dylib /usr/local/lib/liboctomath.1.9.5.dylib /usr/local/lib/libSimTKsimbody.3.7.dylib /usr/local/lib/libSimTKmath.3.7.dylib /usr/local/lib/libSimTKcommon.3.7.dylib -framework Accelerate -ldl -lm transport/libgazebo_transport.11.0.0.dylib msgs/libgazebo_msgs.11.0.0.dylib common/libgazebo_common.11.0.0.dylib /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/lib/libcurl.tbd /usr/local/lib/libfreeimage.dylib /usr/local/lib/libignition-common3-graphics.3.6.0.dylib /usr/local/lib/libignition-fuel_tools4.4.1.0.dylib /usr/local/lib/libignition-common3.3.6.0.dylib /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/lib/libdl.tbd /usr/local/lib/libtar.dylib /usr/local/lib/libsdformat9.9.2.0.dylib /usr/local/lib/libtbb.dylib /usr/local/lib/libprotobuf.dylib /usr/local/lib/libignition-transport8.8.0.0.dylib /usr/local/Cellar/ossp-uuid/1.6.2_2/lib/libuuid.dylib /usr/local/Cellar/ossp-uuid/1.6.2_2/lib/libuuid.dylib /usr/local/lib/libignition-msgs5.5.3.0.dylib /usr/local/lib/libignition-math6.6.4.0.dylib /usr/local/lib/libprotobuf.dylib -lOgreRTShaderSystem -lOgreMain -lOgreTerrain -lOgrePaging -lOgreOverlay -lOgreMain -lOgreTerrain -lOgrePaging -lOgreOverlay -lpthread -framework OpenGL -ltinyxml /usr/local/lib/libboost_thread-mt.dylib /usr/local/lib/libboost_system-mt.dylib /usr/local/lib/libboost_filesystem-mt.dylib /usr/local/lib/libboost_program_options-mt.dylib /usr/local/lib/libboost_regex-mt.dylib /usr/local/lib/libboost_iostreams-mt.dylib /usr/local/lib/libboost_date_time-mt.dylib -L/usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/lib -lOgreRTShaderSystem -lOgreMain -lpthread -lOgreTerrain -lOgrePaging -lOgreOverlay -lOgreMain -lpthread -lOgreTerrain -lOgrePaging -lOgreOverlay 
2020-07-31T02:45:52.8120080Z cd /tmp/gazebo11-20200731-15435-1q91zzh/gazebo-11.0.0/build/gazebo && /usr/local/Cellar/cmake/3.18.1/bin/cmake -E cmake_symlink_library libgazebo.11.0.0.dylib libgazebo.11.dylib libgazebo.dylib
2020-07-31T02:45:52.8120240Z [ 72%] Built target libgazebo
2020-07-31T02:45:52.8120350Z make: *** [all] Error 2
2020-07-31T02:45:55.6409310Z 
2020-07-31T02:45:55.6409740Z If reporting this issue please do so at (not Homebrew/brew or Homebrew/core):
2020-07-31T02:45:55.6411470Z   https://github.com/osrf/homebrew-simulation/issues
2020-07-31T02:45:55.6411640Z 
2020-07-31T02:45:56.3444550Z These open issues may also help:
2020-07-31T02:45:56.3445810Z Installing gazebo11 on iMac fails https://github.com/osrf/homebrew-simulation/issues/1076
2020-07-31T02:45:56.3446410Z Mac Gazebo11 Catalina build fails at 79% https://github.com/osrf/homebrew-simulation/issues/1081
2020-07-31T02:45:56.4024120Z ##[error]Process completed with exit code 1.
2020-07-31T02:45:56.4139430Z Post job cleanup.
2020-07-31T02:45:56.8836150Z [command]/usr/local/bin/git version
2020-07-31T02:45:56.8928320Z git version 2.28.0
2020-07-31T02:45:56.9002280Z [command]/usr/local/bin/git config --local --name-only --get-regexp core\.sshCommand
2020-07-31T02:45:56.9074830Z [command]/usr/local/bin/git submodule foreach --recursive git config --local --name-only --get-regexp 'core\.sshCommand' && git config --local --unset-all 'core.sshCommand' || :
2020-07-31T02:45:57.0375170Z [command]/usr/local/bin/git config --local --name-only --get-regexp http\.https\:\/\/github\.com\/\.extraheader
2020-07-31T02:45:57.0432240Z http.https://github.com/.extraheader
2020-07-31T02:45:57.0446690Z [command]/usr/local/bin/git config --local --unset-all http.https://github.com/.extraheader
2020-07-31T02:45:57.0542400Z [command]/usr/local/bin/git submodule foreach --recursive git config --local --name-only --get-regexp 'http\.https\:\/\/github\.com\/\.extraheader' && git config --local --unset-all 'http.https://github.com/.extraheader' || :
2020-07-31T02:45:57.2032260Z Cleaning up orphan processes

[traversaro]

Related upstream issues:

• Mac Gazebo11 Catalina build fails at 79% osrf/homebrew-simulation#1081
• Installing gazebo11 on iMac fails osrf/homebrew-simulation#1076

[traversaro]

Now the jobs are failing with:

2020-08-02T02:06:39.7007090Z Error: Cannot install bazelisk because conflicting formulae are installed.
2020-08-02T02:06:39.7007390Z   bazel: because Bazelisk replaces the bazel binary
2020-08-02T02:06:39.7007650Z 
2020-08-02T02:06:39.7007830Z Please `brew unlink bazel` before continuing.

[pattacini]

Yep, noticed the same happening for icub-basic-demos.
Any suggestions to get around this?

[traversaro]

I guess as suggested a brew unlink bazel before all the brew related commands can be helpful, but I did not checked in detail.

[pattacini]

I've checked it unsuccessfully.
But perhaps I've added it up in the wrong location.

[pattacini]

@traversaro the fix in robotology/icub-basic-demos#26 works!

Beforehand, I was unlinking bazel right after brew upgrade, that's why.

[traversaro]

Now the jobs are failing with:

2020-08-02T02:06:39.7007090Z Error: Cannot install bazelisk because conflicting formulae are installed.
2020-08-02T02:06:39.7007390Z   bazel: because Bazelisk replaces the bazel binary
2020-08-02T02:06:39.7007650Z 
2020-08-02T02:06:39.7007830Z Please `brew unlink bazel` before continuing.

This error now disappear on its own, and the problem is again that gazebo11 is not installing.

[nunoguedelha]

@traversaro , FYI, I downloaded Gazebo full source code and rebased the fix gazebosim/gazebo-classic#2809 (fixing the boost::bind issue) on top of gazebo11 branch. I could then build gazebo11 successfully, after installing the dependencies through homebrew:

1. brew install gazebo11 --only-dependencies
2. Gazebo build from source instruction here: build from source instructions here: https://github.com/osrf/gazebo_tutorials/blob/master/install_from_source/tutorial_default.md#build-and-install-gazebo
3. Add <CMAKE_INSTALL_PREFIX>/bin to PATH env variable.
4. Add <CMAKE_INSTALL_PREFIX>/lib to DYLD_LIBRARY_PATH env variable.

After this, Gazebo starts without problems. I am on Catalina.

[traversaro]

The macOS jobs are working well now, probably thanks to osrf/homebrew-simulation#1095 and https://github.com/osrf/homebrew-simulation/pull/1094/files . I think we can close the issue now.