Error log

The package failed to build. The error log from opam follows.

# Detecting depexts using vars: arch=x86_64, os=linux, os-distribution=debian, os-family=debian
# The following system packages are needed:
perl
pkg-config
zlib1g-dev
The following command needs to be run through "sudo":
    apt-get install -qq -yy perl pkg-config zlib1g-dev
debconf: delaying package configuration, since apt-utils is not installed
Selecting previously unselected package libglib2.0-0:amd64.
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(Reading database ... 18283 files and directories currently installed.)
Preparing to unpack .../0-libglib2.0-0_2.66.8-1_amd64.deb ...
Unpacking libglib2.0-0:amd64 (2.66.8-1) ...
Selecting previously unselected package libglib2.0-data.
Preparing to unpack .../1-libglib2.0-data_2.66.8-1_all.deb ...
Unpacking libglib2.0-data (2.66.8-1) ...
Selecting previously unselected package libicu67:amd64.
Preparing to unpack .../2-libicu67_67.1-7_amd64.deb ...
Unpacking libicu67:amd64 (67.1-7) ...
Selecting previously unselected package libxml2:amd64.
Preparing to unpack .../3-libxml2_2.9.10+dfsg-6.7_amd64.deb ...
Unpacking libxml2:amd64 (2.9.10+dfsg-6.7) ...
Selecting previously unselected package pkg-config.
Preparing to unpack .../4-pkg-config_0.29.2-1_amd64.deb ...
Unpacking pkg-config (0.29.2-1) ...
Selecting previously unselected package shared-mime-info.
Preparing to unpack .../5-shared-mime-info_2.0-1_amd64.deb ...
Unpacking shared-mime-info (2.0-1) ...
Selecting previously unselected package xdg-user-dirs.
Preparing to unpack .../6-xdg-user-dirs_0.17-2_amd64.deb ...
Unpacking xdg-user-dirs (0.17-2) ...
Selecting previously unselected package zlib1g-dev:amd64.
Preparing to unpack .../7-zlib1g-dev_1%3a1.2.11.dfsg-2_amd64.deb ...
Unpacking zlib1g-dev:amd64 (1:1.2.11.dfsg-2) ...
Setting up libicu67:amd64 (67.1-7) ...
Setting up xdg-user-dirs (0.17-2) ...
Setting up libglib2.0-0:amd64 (2.66.8-1) ...
No schema files found: doing nothing.
Setting up libglib2.0-data (2.66.8-1) ...
Setting up pkg-config (0.29.2-1) ...
Setting up zlib1g-dev:amd64 (1:1.2.11.dfsg-2) ...
Setting up libxml2:amd64 (2.9.10+dfsg-6.7) ...
Setting up shared-mime-info (2.0-1) ...
Processing triggers for libc-bin (2.31-13+deb11u2) ...
# OS packages installation successful
# Now letting opam install the packages
[NOTE] Package ocamlfind is already installed (current version is 1.9.1).
[NOTE] Package dune is already installed (current version is 2.0.1).
The following actions will be performed:
  - install conf-pkg-config 2
  - install base-bytes      base
  - install conf-perl       1
  - install cppo            1.6.7
  - install ocamlbuild      0.14.0
  - install conf-zlib       1
  - install extlib-compat   1.7.2
  - install camlp4          4.06+1
  - install camlzip         1.10
  - install javalib         2.3.4
  - install sawja           1.5.3
===== 11 to install =====

<><> Gathering sources ><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
Processing  2/11: [camlp4.4.06+1: http]
[camlzip.1.10] found in cache
Processing  3/11: [camlp4.4.06+1: http]
Processing  4/11: [camlp4.4.06+1: http]
Processing  5/11: [camlp4.4.06+1: http]
Processing  6/11: [camlp4.4.06+1: http]
[cppo.1.6.7] found in cache
Processing  7/11: [camlp4.4.06+1: http]
Processing  8/11: [camlp4.4.06+1: http] [extlib-compat.1.7.2: http]
Processing  9/11: [camlp4.4.06+1: http] [extlib-compat.1.7.2: http] [javalib.2.3.4: http]
Processing  9/11: [camlp4.4.06+1: http] [extlib-compat.1.7.2: http]
[ocamlbuild.0.14.0] found in cache
Processing 10/11: [camlp4.4.06+1: http] [extlib-compat.1.7.2: http]
Processing 11/11: [camlp4.4.06+1: http] [extlib-compat.1.7.2: http] [sawja.1.5.3: http]
[extlib-compat.1.7.2] downloaded from https://ygrek.org/p/release/ocaml-extlib/extlib-1.7.2.tar.gz
Processing 11/11: [camlp4.4.06+1: http] [sawja.1.5.3: http]
Processing 11/11: [camlp4.4.06+1: http]
[camlp4.4.06+1] downloaded from https://github.com/ocaml/camlp4/archive/4.06+1.tar.gz
Processing 11/11:
[ERROR] The sources of the following couldn't be obtained, aborting:
          - javalib.2.3.4:
            https://gforge.inria.fr/frs/download.php/file/37154/javalib-2.3.4.tar.bz2 (curl: code 403 while downloading https://gforge.inria.fr/frs/download.php/file/37154/javalib-2.3.4.tar.bz2)
          - sawja.1.5.3:
            https://gforge.inria.fr/frs/download.php/file/37403/sawja-1.5.3.tar.bz2 (curl: code 403 while downloading https://gforge.inria.fr/frs/download.php/file/37403/sawja-1.5.3.tar.bz2)

'opam install --verbose --yes sawja.1.5.3 base-bytes.base camlp4.4.06+1 camlzip.1.10 conf-perl.1 conf-pkg-config.2 conf-zlib.1 cppo.1.6.7 dune.2.0.1 extlib-compat.1.7.2 javalib.2.3.4 ocamlbuild.0.14.0 ocamlfind.1.9.1' failed.