Bug #120625 for Net-SSH2:

Since C<warnif> can make C library or system calls, C<warnif> can clobber C<errno> and thus C<$!>. Please replace error: unless (defined wantarray) { $connect_void_warned++ or warnings::warnif($self, "Calling connect in void context is deprecated"); croak "Net::SSH2: failed to connect to $_[0]:$_[1]: $!" } return; with error: unless (defined wantarray) { my $errno = $!; $connect_void_warned++ or warnings::warnif($self, "Calling connect in void context is deprecated"); croak "Net::SSH2: failed to connect to $_[0]:$_[1]: $errno" } return; or better yet with error: unless (defined wantarray) { my $errno = $!; $connect_void_warned++ or warnings::warnif($self, "Calling connect in void context is deprecated"); $self->die_with_error(); } return;