The log you attached is not from the output you showed above. The output you showed above ends with an error in the configure phase, but the relevant error in the log you attached is from the fetch phase:
:info:archivefetch ---> poppler-0.18.2_0.darwin_10.x86_64.tbz2 doesn't seem to exist in /opt/local/var/macports/software/poppler
:msg:archivefetch ---> Attempting to fetch poppler-0.18.2_0.darwin_10.x86_64.tbz2 from http://packages.macports.org/poppler
:msg:archivefetch ---> Attempting to fetch poppler-0.18.2_0.darwin_10.x86_64.tbz2.rmd160 from http://packages.macports.org/poppler
:debug:archivefetch failed verification with key /opt/local/share/macports/macports-pubkey.pem
:debug:archivefetch openssl output: Verification Failure
child process exited abnormally
:error:archivefetch Target org.macports.archivefetch returned: Failed to verify signature for archive!
Please attach the main.log that corresponds with the output you pasted above, or if the archive verification is the failure you're still experiencing, then we need to debug why that's happening.