I found the log from a previous attempt at building on europa, and it was the same.
Automatic build of perl-5.6_5.6.0-6.2 on europa by sbuild 1.149 Build started at 20010120-0951 ****************************************************************************** [...] LD_LIBRARY_PATH=/home/buildd/build/perl-5.6-5.6.0 cc -L/usr/local/lib -o miniperl \ miniperlmain.o opmini.o libperl.so.5.6.0 -lnsl -ldl -lm -lc -lcrypt LD_LIBRARY_PATH=/home/buildd/build/perl-5.6-5.6.0 ./miniperl -w -Ilib -MExporter -e '<?>' || make minitest syntax error at -e line 1, near "use Exporter; <?>" Execution of -e aborted due to compilation errors. p.