installing an older port

[Gideon Simpson]

I tried following the directions online to download and install an older port, but I’m encountering the following problem:

gideon at gs_air:ports$ svn checkout -r 137992 https://svn.macports.org/repository/macports/trunk/dports/devel/swig
Error validating server certificate for 'https://svn.macports.org:443':
 - The certificate is not issued by a trusted authority. Use the
   fingerprint to validate the certificate manually!
Certificate information:
 - Hostname: *.macports.org
 - Valid: from Wed, 11 Feb 2015 19:19:18 GMT until Fri, 01 Apr 2016 01:19:52 GMT
 - Issuer: GlobalSign nv-sa, BE
 - Fingerprint: 15:5e:21:55:fe:e3:26:ae:b2:f8:c6:6a:d2:1a:bf:82:74:dd:c9:14
(R)eject, accept (t)emporarily or accept (p)ermanently? t
A    swig/files
A    swig/files/patch-configure.diff
A    swig/Portfile
Checked out revision 137992.
gideon at gs_air:ports$ cd swig/
gideon at gs_air:swig$ sudo port install
Password:
Error: Unable to execute port: Could not open file: /Users/gideon/Downloads/ports/swig/Portfile


-gideon

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