Upgrading fails because of boost port: no matching file found for...

[tillyboy]

This is what I ran:

% sudo port clean boost; sudo port uninstall boost; sudo port install -t boost
--->  Cleaning boost
--->  Computing dependencies for boost
--->  Fetching archive for boost
--->  Attempting to fetch boost-1.71.0_3+no_single+no_static+python38.darwin_17.x86_64.tbz2 from https://packages.macports.org/boost
--->  Attempting to fetch boost-1.71.0_3+no_single+no_static+python38.darwin_17.x86_64.tbz2.rmd160 from https://packages.macports.org/boost
--->  Installing boost @1.71.0_3+no_single+no_static+python38
Error: Failed to install boost: no matching file found for: id=1080, name=/opt/local/share/doc/boost/doc/html/BOOST_PROTO_A_1_3_34_5_5_4.html
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_boost/boost/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.
Error: Processing of port boost failed

And this is the output of the debug log:

:debug:install  /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_boost/boost/work/.tmp=+
:debug:install  /var/db/timezone/zoneinfo=+
:debug:install  /private/var/db/timezone/tz/2020a.1.0/zoneinfo=+
:debug:install  /var/db/mds/system=+
:debug:install  /private/var/db/mds/system=+
:debug:install  /var/db/xcode_select_link=-
:debug:install  /private/var/db/xcode_select_link=-
:debug:install  /var/db/mds=-
:debug:install  /private/var/db/mds=-
:debug:install  /opt/local/var/macports/home/Library/Preferences/com.apple.dt.Xcode.plist=-
:debug:install  /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_boost/boost/work/.home/Library/Preferences/com.apple.dt.Xcode.plist=-
:debug:install  /Applications/Xcode.app=-
:debug:install  /var/db/launchd.db=+
:debug:install  /private/var/db/launchd.db=+
:debug:install  /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_boost/boost/work/.home/.ccache=+
:debug:install  /opt/local/var/macports/build/.ccache=+
:debug:install  /opt/local/var/macports/sip-workaround=+
:debug:install  /opt/local=?
:debug:install Tracemode will respect recursively collected port dependencies: bzip2 expat gettext icu libedit libffi libiconv lz4 lzma ncurses openssl python38 python3_select python_select sqlite3 xz zlib zstd
:debug:install Executing org.macports.install (boost)
:error:install Failed to install boost: no matching file found for: id=1080, name=/opt/local/share/doc/boost/doc/html/BOOST_PROTO_A_1_3_34_5_5_4.html
:debug:install Error code: registry::not-found
:debug:install Backtrace: no matching file found for: id=1080, name=/opt/local/share/doc/boost/doc/html/BOOST_PROTO_A_1_3_34_5_5_4.html
:debug:install     while executing
:debug:install "registry::file open [$regref id] $f"
:debug:install     ("foreach" body line 2)
:debug:install     invoked from within
:debug:install "foreach f [array names portinstall::file_is_binary] {
:debug:install                 set fileref [registry::file open [$regref id] $f]
:debug:install                 $fileref binar..."
:debug:install     invoked from within
:debug:install "registry::write {
:debug:install 
:debug:install         set regref [registry::entry create $subport $version $revision $portvariants $epoch]
:debug:install 
:debug:install         if {[info exists user_options..."
:debug:install     (procedure "portinstall::install_main" line 43)
:debug:install     invoked from within
:debug:install "$procedure $targetname"
:error:install See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_boost/boost/main.log for details.