wget crashes on a recursive download of my city's website

[Eric Gallager]

I was trying to use wget to download all of the calendar files on my
city website: http://concordnh.gov/iCalendar.aspx
Admittedly I'm kind of inexperienced at wget, so I probably didn't use
the right command-line, but anyways it was:
$ wget -r --tries=3 -c --random-wait -E --preserve-permissions
--no-parent https://www.concordnh.gov/iCalendar.aspx
Here is the tail end of the terminal output leading up to the crash:

--2022-06-04 21:23:09--  http://www.concordnh.gov/1737/Concord-Municipal-Airport
Reusing existing connection to www.concordnh.gov:80.
HTTP request sent, awaiting response... 302 Found
Location: http://www.concordnh.gov/344/Concord-Municipal-Airport [following]
--2022-06-04 21:23:09--  http://www.concordnh.gov/344/Concord-Municipal-Airport
Reusing existing connection to www.concordnh.gov:80.
HTTP request sent, awaiting response... 200 OK
Length: 96714 (94K) [text/html]
Saving to: ‘www.concordnh.gov/1737/Concord-Municipal-Airport.html’

www.concordnh.gov/1737/Concord-Municipal-Airport.html
100%[====================================================================================================================================================>]
 94.45K   370KB/s    in 0.3s

2022-06-04 21:23:10 (370 KB/s) -
‘www.concordnh.gov/1737/Concord-Municipal-Airport.html’ saved
[96714/96714]

Segmentation fault: 11
$

Here is my wget --version info:
$ wget --version
GNU Wget 1.21.3 built on darwin20.6.0.

-cares +digest -gpgme +https +ipv6 +iri +large-file -metalink +nls
+ntlm +opie +psl +ssl/gnutls

Wgetrc:
    /Users/ericgallager/.wgetrc (user)
    /opt/local/etc/wgetrc (system)
Locale:
    /opt/local/share/locale
Compile:
    /usr/bin/clang -DHAVE_CONFIG_H
    -DSYSTEM_WGETRC="/opt/local/etc/wgetrc"
    -DLOCALEDIR="/opt/local/share/locale" -I. -I../lib -I../lib
    -I/opt/local/include
    -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk
    -DNDEBUG -pipe -Os -std=c99
    -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk
    -arch x86_64
Link:
    /usr/bin/clang -DNDEBUG -pipe -Os -std=c99
    -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk
    -arch x86_64 -L/opt/local/lib -Wl,-headerpad_max_install_names
    -Wl,-syslibroot,/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk
    -arch x86_64 -L/opt/local/lib -lpcre2-8 -L/opt/local/lib -lidn2
    -L/opt/local/lib -lnettle /opt/local/lib/libgnutls.dylib
    -L/opt/local/lib -lz -L/opt/local/lib -lpsl ../lib/libgnu.a
    /opt/local/lib/libiconv.dylib /opt/local/lib/libintl.dylib
    -Wl,-framework -Wl,CoreFoundation /opt/local/lib/libunistring.dylib

Copyright (C) 2015 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://www.gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Originally written by Hrvoje Niksic <hniksic@xemacs.org>.
Please send bug reports and questions to <bug-wget@gnu.org>.
$

I have it installed via MacPorts, and MacPorts tells me that this is
the latest version:
$ port -v livecheck wget
wget seems to be up to date
$

It took several hours before the crash happened, so I don't really
want to run the command again just to get a backtrace... any hints on
how to reduce the command-line to get a minimized test-case are
welcome.

Thanks,
Eric Gallager