Debian Stable（Buster）でDDDデバッガを正常にインストールできません。

Debian Stable（Buster）でDDDデバッガを正常にインストールできません。

dddをインストールしようとすると、次のエラーでインストールが失敗します。

robert@pip2:/tmp$ sudo -l
[sudo] password for robert: 
Matching Defaults entries for robert on pip2:
    env_reset, mail_badpass, secure_path=/usr/local/sbin\:/usr/local/bin\:    /usr/sbin\:/usr/bin\:/sbin\:/bin

User robert may run the following commands on pip2:
(ALL : ALL) ALL

robert@pip2:/tmp$ sudo aptitude install ddd
The following NEW packages will be installed:
  ddd gdb{a} libbabeltrace1{a} libc6-dbg{a} libipt2{a} libmotif-common{a}     libxm4{a} 
0 packages upgraded, 7 newly installed, 0 to remove and 0 not upgraded.
Need to get 3,456 kB/24.4 MB of archives. After unpacking 44.1 MB will be     used.
Do you want to continue? [Y/n/?] 
Err http://deb.debian.org/debian buster/main i386 libbabeltrace1 i386 1.5.6-2
404  Not Found [IP: 2a04:4e42:2d::204 80]
Err http://deb.debian.org/debian buster/main i386 gdb i386 8.2.1-2
404  Not Found [IP: 2a04:4e42:2d::204 80]
86% [Working]E: Failed to fetch http://deb.debian.org/debian/pool/main/b/babeltrace/libbabeltrace1_1.5.6-2_i386.deb: 404  Not Found [IP:        2a04:4e42:2d::204 80]
E: Unable to fetch some packages; try '-o APT::Get::Fix-Missing=true' to     continue with missing packages

robert@pip2:/tmp$ 

カスタマイズせずにnetinstを介してデフォルトのデスクトップインストールのみをインストールしました。

パッケージのインストールに問題が発生したのは今回が初めてなので、resources.listをどのように調整するのかわかりません。

私の/etc/apt/sources.listファイル：

robert@pip2:/etc/apt$ cat ./sources.list
# 

# deb cdrom:[Debian GNU/Linux 10.0.0 _Buster_ - Official i386 NETINST 20190706-11:30]/ buster main

#deb cdrom:[Debian GNU/Linux 10.0.0 _Buster_ - Official i386 NETINST 20190706-11:30]/ buster main

deb http://deb.debian.org/debian/ buster main contrib
deb-src http://deb.debian.org/debian/ buster main contrib

deb http://security.debian.org/debian-security buster/updates main contrib
deb-src http://security.debian.org/debian-security buster/updates main contrib

# buster-updates, previously known as 'volatile'
deb http://deb.debian.org/debian/ buster-updates main contrib
deb-src http://deb.debian.org/debian/ buster-updates main contrib

# This system was installed using small removable media
# (e.g. netinst, live or single CD). The matching "deb cdrom"
# entries were disabled at the end of the installation process.
# For information about how to configure apt package sources,
# see the sources.list(5) manual.
robert@pip2:/etc/apt$ 

2019-10-13 編集

コメントが要求されました

「この結果をapt-get update質問に追加します。」

ここにいる：

robert@pip2:/tmp$ sudo apt-get update
Hit:1 http://deb.debian.org/debian buster InRelease
Get:2 http://deb.debian.org/debian buster-updates InRelease [49.3 kB]
Hit:3 http://security.debian.org/debian-security buster/updates InRelease      
Fetched 49.3 kB in 2s (29.8 kB/s)
Reading package lists... Done
robert@pip2:/tmp$ 

2019-10-14 編集

別のコメントは、md5sum値について尋ねました。ここにいる：

robert@pip2:/tmp$ sudo md5sum /var/lib/apt/lists/deb.debian.org_debian_dists_buster_InRelease
9c0457c7c76f7eca24842cfb62de7f77  /var/lib/apt/lists/deb.debian.org_debian_dists_buster_InRelease

2019-10-19 編集 libbabeltrace1 インストールを試みる

robert@pip2:/tmp$ sudo aptitude install libbabeltrace1
[sudo] password for robert: 
The following NEW packages will be installed:
    libbabeltrace1 
0 packages upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 191 kB of archives. After unpacking 612 kB will be used.
Err http://deb.debian.org/debian buster/main i386 libbabeltrace1 i386 1.5.6-2
    404  Not Found [IP: 151.101.188.204 80]
0% [Working]E: Failed to fetch http://deb.debian.org/debian/pool/main/b/babeltrace/libbabeltrace1_1.5.6-2_i386.deb: 404  Not Found [IP: 151.101.188.204 80]
E: Unable to fetch some packages; try '-o APT::Get::Fix-Missing=true' to                 continue with missing packages

robert@pip2:/tmp$