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-rw-r--r--lib/PublicInbox/LeiToMail.pm10
-rw-r--r--lib/PublicInbox/NetReader.pm8
2 files changed, 14 insertions, 4 deletions
diff --git a/lib/PublicInbox/LeiToMail.pm b/lib/PublicInbox/LeiToMail.pm
index 2aa3977e..03cbde3b 100644
--- a/lib/PublicInbox/LeiToMail.pm
+++ b/lib/PublicInbox/LeiToMail.pm
@@ -310,8 +310,11 @@ sub _imap_write_cb ($$) {
         my $dedupe = $lei->{dedupe};
         $dedupe->prepare_dedupe if $dedupe;
         my $append = $lei->{net}->can('imap_append');
-        my $uri = $self->{uri};
-        my $mic = $lei->{net}->mic_get($uri);
+        my $uri = $self->{uri} // die 'BUG: no {uri}';
+        my $mic = $lei->{net}->mic_get($uri) // die <<EOM;
+E: $uri connection failed.
+E: Consider using `--jobs ,1' to limit IMAP connections
+EOM
         my $folder = $uri->mailbox;
         $uri->uidvalidity($mic->uidvalidity($folder));
         my $lse = $lei->{lse}; # may be undef
@@ -749,7 +752,8 @@ sub do_post_auth {
                 $au_peers->[1] = undef;
                 sysread($au_peers->[0], my $barrier1, 1);
         }
-        $self->{wcb} = $self->write_cb($lei);
+        eval { $self->{wcb} = $self->write_cb($lei) };
+        $lei->fail($@) if $@;
         if ($au_peers) { # wait for peer l2m to set write_cb
                 $au_peers->[3] = undef;
                 sysread($au_peers->[2], my $barrier2, 1);
diff --git a/lib/PublicInbox/NetReader.pm b/lib/PublicInbox/NetReader.pm
index c1af03a3..4de2583e 100644
--- a/lib/PublicInbox/NetReader.pm
+++ b/lib/PublicInbox/NetReader.pm
@@ -685,7 +685,13 @@ sub mic_get {
         }
         my $mic = mic_new($self, $mic_arg, $sec, $uri);
         $cached //= {}; # invalid placeholder if no cache enabled
-        $mic && $mic->IsConnected ? ($cached->{$sec} = $mic) : undef;
+        if ($mic && $mic->IsConnected) {
+                $cached->{$sec} = $mic;
+        } else {
+                warn 'IMAP LastError: ',$mic->LastError, "\n" if $mic;
+                warn "IMAP errno: $!\n" if $!;
+                undef;
+        }
 }
 
 sub imap_each {