Fix Appveyor CI builds #2589

Job	Run time
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, no, no)	4m 32s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, no, libusb-1.0)	4m 47s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, no, libusb-0.1)	5m 46s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, nss, no)	4m 49s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, nss, libusb-1.0)	5m 6s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, nss, libusb-0.1)	4m 47s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, openssl, no)	4m 36s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, openssl, libusb-1.0)	4m 43s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, openssl, libusb-0.1)	5m 0s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, no, no)	4m 53s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, no, libusb-1.0)	4m 32s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, no, libusb-0.1)	5m 14s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, nss, no)	4m 49s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, nss, libusb-1.0)	5m 9s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, nss, libusb-0.1)	4m 59s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, openssl, no)	5m 0s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, openssl, libusb-1.0)	5m 5s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, openssl, libusb-0.1)	5m 25s
Analyze (python, ubuntu-latest, PYTHON=python3, no, no)	1m 12s
	1h 30m 24s

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