The valid URL in question is: https://raw.github.com/boostorg/boost/develop/tools/regression/src/regressio...
Which gives the "raw" data of the file.. Not the web page showing the fancy source code.
Here's the wget details in case it helps (with proxy).
-bash-4.1$ wget http://raw.github.com/boostorg/boost/develop/tools/regression/src/regression... --2014-01-22 15:09:29-- http://raw.github.com/boostorg/boost/develop/tools/regression/src/regression... Resolving wwwproxy.sandia.gov... 134.253.26.250 Connecting to wwwproxy.sandia.gov|134.253.26.250|:80... connected. Proxy request sent, awaiting response... 301 Moved Permanently Location: https://raw.github.com/boostorg/boost/develop/tools/regression/src/regressio... [following] --2014-01-22 15:09:30-- https://raw.github.com/boostorg/boost/develop/tools/regression/src/regressio... Resolving raw.github.com... 199.27.77.133 Connecting to raw.github.com|199.27.77.133|:443... failed: Connection timed out.
Make sure that https_proxy is set to the same value as http_proxy. I believe that wget is attempting to bypass the proxy for secure connections. -- Thomas