Unescaped left brace in regex is illegal here in regex

[eserte]

Module compilation fails on bleadperl (e.g. perl 5.25.4):

PERL_DL_NONLAZY=1 "/bbbike/perl-5.25.4/bin/perl5.25.4" "-MExtUtils::Command::MM" "-MTest::Harness" "-e" "undef *Test::Harness::Switches; test_harness(0, 'blib/lib', 'blib/arch')" t/*.t
Possible precedence issue with control flow operator at lib/MRS/Client/Blast.pm line 269.
Unescaped left brace in regex is illegal here in regex; marked by <-- HERE in m/\${ <-- HERE JOBID}/ at lib/MRS/Client/Blast.pm line 409.
Compilation failed in require at lib/MRS/Client.pm line 27.
BEGIN failed--compilation aborted at lib/MRS/Client.pm line 27.
Compilation failed in require at -e line 1.
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