>>> rtptools 1.22 Downloading
wget -nd -t 3 --no-check-certificate -O '/workdir/instance-0/output-1/build/.rtptools-1.22.tar.gz.ZWCgmK/output' 'http://www.cs.columbia.edu/irt/software/rtptools/download/rtptools-1.22.tar.gz' 
WARNING: The certificate is NOT trusted. The certificate issuer is unknown. 
[0] Downloading 'http://www.cs.columbia.edu/irt/software/rtptools/download/rtptools-1.22.tar.gz' ...
HTTP response 301 Moved Permanently [http://www.cs.columbia.edu/irt/software/rtptools/download/rtptools-1.22.tar.gz]
Adding URL: https://www.cs.columbia.edu/irt/software/rtptools/download/rtptools-1.22.tar.gz
[0] Downloading 'https://www.cs.columbia.edu/irt/software/rtptools/download/rtptools-1.22.tar.gz' ...
Saving '/workdir/instance-0/output-1/build/.rtptools-1.22.tar.gz.ZWCgmK/output'
HTTP response 200 OK [https://www.cs.columbia.edu/irt/software/rtptools/download/rtptools-1.22.tar.gz]
ERROR: while checking hashes from package/rtptools/rtptools.hash
ERROR: rtptools-1.22.tar.gz has wrong sha256 hash:
ERROR: expected: 2c76b2a423fb943820c91194372133a44cbdc456ebf69c51616ec50eeb068c28
ERROR: got     : 5d5a546240797e4052bb7ef89fe39ed6de3b4825f7626b5b36cd4918b77adaf7
ERROR: Incomplete download, or man-in-the-middle (MITM) attack
make: *** [package/pkg-generic.mk:179: /workdir/instance-0/output-1/build/rtptools-1.22/.stamp_downloaded] Error 1
make: Leaving directory '/workdir/instance-0/buildroot'