I'm skeptical of the git bisect results:

$ git checkout cde5b485c9cdf0bfd5b6ea8e4973abe378270e60^
Previous HEAD position was cde5b48... fail instead of segfault on unreadable 
config files
HEAD is now at 235347e... Release 1.2.12
$ make fast
Compiling cachefile.cc to ../build/obj/apt-pkg/cachefile.opic
Compiling policy.cc to ../build/obj/apt-pkg/policy.opic
Building shared library ../build/bin/libapt-pkg.so.5.0.0
Compiling contrib/arfile.cc to ../build/obj/apt-inst/arfile.opic
Compiling contrib/extracttar.cc to ../build/obj/apt-inst/extracttar.opic
Compiling deb/debfile.cc to ../build/obj/apt-inst/debfile.opic
Compiling dirstream.cc to ../build/obj/apt-inst/dirstream.opic
Compiling extract.cc to ../build/obj/apt-inst/extract.opic
Compiling filelist.cc to ../build/obj/apt-inst/filelist.opic
Building shared library ../build/bin/libapt-inst.so.2.0.0
Compiling private-cacheset.cc to ../build/obj/apt-private/private-cacheset.opic
Compiling private-list.cc to ../build/obj/apt-private/private-list.opic
Compiling private-depends.cc to ../build/obj/apt-private/private-depends.opic
Compiling private-show.cc to ../build/obj/apt-private/private-show.opic
Building shared library ../build/bin/libapt-private.so.0.0.0
Compiling apt-mark.cc to ../build/obj/cmdline/apt-mark.o
Building program ../build/bin/apt-mark
Must have libdb to build apt-ftparchive
$ sudo rm -rf /var/lib/apt/lists
sarnold@hunt:~/trees/apt$ sudo LD_LIBRARY_PATH=$PWD/build/bin/ 
./build/bin/apt-get update -o Dir::Bin::Methods="$PWD/build/bin/methods/" 2>&1 
| tee update.log
Get:1 http://mirrors.kernel.org/ubuntu xenial InRelease [247 kB]
Get:2 http://mirrors.kernel.org/ubuntu xenial-updates InRelease [95.7 kB]
Get:3 http://security.debian.org jessie/updates InRelease [63.1 kB]
Get:4 http://mirrors.kernel.org/ubuntu xenial-security InRelease [94.5 kB]
Ign:5 http://mirrors.kernel.org/ubuntu precise InRelease
Get:6 http://mirrors.kernel.org/ubuntu precise-updates InRelease [55.7 kB]
Get:7 http://mirrors.kernel.org/ubuntu precise-security InRelease [55.7 kB]
Get:8 http://mirrors.kernel.org/ubuntu precise-proposed InRelease [55.7 kB]
Ign:9 http://mirrors.kernel.org/ubuntu trusty InRelease
Get:10 http://mirrors.kernel.org/ubuntu trusty-updates InRelease [65.9 kB]
Get:11 http://mirrors.kernel.org/ubuntu trusty-security InRelease [65.9 kB]
Get:12 http://mirrors.kernel.org/ubuntu trusty-proposed InRelease [65.9 kB]
Get:13 http://mirrors.kernel.org/ubuntu xenial-proposed InRelease [247 kB]
Get:14 http://mirrors.kernel.org/ubuntu yakkety InRelease [247 kB]
Get:15 http://security.debian.org wheezy/updates InRelease [40.6 kB]
Get:16 http://mirrors.kernel.org/ubuntu yakkety-updates InRelease [94.5 kB]
Get:17 http://mirrors.kernel.org/ubuntu yakkety-security InRelease [93.3 kB]
Get:18 http://mirrors.kernel.org/ubuntu yakkety-proposed InRelease [95.7 kB]
Get:19 http://mirrors.kernel.org/ubuntu zesty InRelease [247 kB]
Ign:1 http://mirrors.kernel.org/ubuntu xenial InRelease
Get:20 http://mirrors.kernel.org/ubuntu zesty-updates InRelease [92.1 kB]
Get:21 http://mirrors.kernel.org/ubuntu zesty-security InRelease [92.2 kB]
Get:22 http://mirrors.kernel.org/ubuntu zesty-proposed InRelease [95.6 kB]
Get:23 http://mirrors.kernel.org/ubuntu precise Release [49.6 kB]
Get:24 http://mirrors.kernel.org/ubuntu trusty Release [58.5 kB]
Get:25 http://mirrors.kernel.org/ubuntu xenial/main Sources [868 kB]
Get:26 http://security.ubuntu.com/ubuntu xenial-security InRelease [94.5 kB]
Get:27 http://mirrors.kernel.org/ubuntu xenial/restricted Sources [4,808 B]
Get:28 http://mirrors.kernel.org/ubuntu xenial/universe Sources [7,728 kB]
Ign:2 http://mirrors.kernel.org/ubuntu xenial-updates InRelease
Ign:4 http://mirrors.kernel.org/ubuntu xenial-security InRelease
Ign:29 http://archive.canonical.com/ubuntu precise InRelease
Get:30 
http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu vivid 
InRelease [20.9 kB]
Get:31 http://ftp.debian.org/debian unstable InRelease [219 kB]
Get:32 http://mirrors.kernel.org/ubuntu xenial/multiverse Sources [179 kB]
Get:33 http://mirrors.kernel.org/ubuntu xenial/main amd64 Packages [1,201 kB]
Ign:6 http://mirrors.kernel.org/ubuntu precise-updates InRelease
Get:34 http://mirrors.kernel.org/ubuntu xenial/main i386 Packages [1,196 kB]
Get:35 http://mirrors.kernel.org/ubuntu xenial/main Translation-en [568 kB]
Get:36 http://mirrors.kernel.org/ubuntu xenial/restricted amd64 Packages [8,344 
B]
Get:37 http://mirrors.kernel.org/ubuntu xenial/restricted i386 Packages [8,684 
B]
Get:38 http://mirrors.kernel.org/ubuntu xenial/restricted Translation-en [2,908 
B]
Get:39 http://mirrors.kernel.org/ubuntu xenial/universe amd64 Packages [7,532 
kB]
Ign:7 http://mirrors.kernel.org/ubuntu precise-security InRelease
Ign:40 http://archive.canonical.com/ubuntu trusty InRelease
Ign:8 http://mirrors.kernel.org/ubuntu precise-proposed InRelease
Get:41 http://mirrors.kernel.org/ubuntu xenial/universe i386 Packages [7,512 kB]
Ign:10 http://mirrors.kernel.org/ubuntu trusty-updates InRelease
Get:42 http://archive.canonical.com/ubuntu xenial InRelease [11.5 kB]
Get:43 http://ppa.launchpad.net/snappy-dev/image/ubuntu vivid InRelease [16.0 
kB]
Ign:3 http://security.debian.org jessie/updates InRelease
Get:44 http://security.debian.org jessie/updates/main Sources [168 kB]
Get:45 http://mirrors.kernel.org/ubuntu xenial/universe Translation-en [4,354 
kB]
Ign:11 http://mirrors.kernel.org/ubuntu trusty-security InRelease
Get:46 http://security.debian.org jessie/updates/contrib Sources [1,439 B]
Get:47 http://mirrors.kernel.org/ubuntu xenial/multiverse amd64 Packages [144 
kB]
Get:48 http://mirrors.kernel.org/ubuntu xenial/multiverse i386 Packages [140 kB]
Get:49 http://archive.canonical.com/ubuntu yakkety InRelease [11.5 kB]
Get:50 http://mirrors.kernel.org/ubuntu xenial/multiverse Translation-en [106 
kB]
Ign:12 http://mirrors.kernel.org/ubuntu trusty-proposed InRelease
Get:51 http://mirrors.kernel.org/ubuntu precise Release.gpg [198 B]
Get:52 http://mirrors.kernel.org/ubuntu trusty Release.gpg [933 B]
Get:53 http://mirrors.kernel.org/ubuntu xenial-updates/main Sources [203 kB]
Get:54 
http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu 
xenial InRelease [23.9 kB]
Get:55 http://mirrors.kernel.org/ubuntu xenial-updates/restricted Sources 
[1,804 B]
Get:56 http://mirrors.kernel.org/ubuntu xenial-updates/universe Sources [109 kB]
Get:57 http://mirrors.kernel.org/ubuntu xenial-updates/multiverse Sources 
[3,224 B]
Get:58 http://mirrors.kernel.org/ubuntu xenial-updates/main amd64 Packages [419 
kB]
Get:59 http://mirrors.kernel.org/ubuntu xenial-updates/main i386 Packages [414 
kB]
Get:60 http://mirrors.kernel.org/ubuntu xenial-updates/main Translation-en [161 
kB]
Get:61 http://mirrors.kernel.org/ubuntu xenial-updates/restricted amd64 
Packages [6,576 B]
Get:62 http://mirrors.kernel.org/ubuntu xenial-updates/restricted i386 Packages 
[6,528 B]
Get:63 http://mirrors.kernel.org/ubuntu xenial-updates/restricted 
Translation-en [2,016 B]
Get:64 http://mirrors.kernel.org/ubuntu xenial-updates/universe amd64 Packages 
[359 kB]
Get:65 http://mirrors.kernel.org/ubuntu xenial-updates/universe i386 Packages 
[355 kB]
Get:66 http://mirrors.kernel.org/ubuntu xenial-updates/universe Translation-en 
[130 kB]
Get:67 http://mirrors.kernel.org/ubuntu xenial-updates/multiverse amd64 
Packages [7,048 B]
Get:68 http://mirrors.kernel.org/ubuntu xenial-updates/multiverse i386 Packages 
[5,852 B]
Get:69 http://mirrors.kernel.org/ubuntu xenial-updates/multiverse 
Translation-en [2,868 B]
Get:70 http://mirrors.kernel.org/ubuntu xenial-security/main Sources [45.5 kB]
Get:71 http://mirrors.kernel.org/ubuntu xenial-security/restricted Sources 
[1,804 B]
Get:72 http://mirrors.kernel.org/ubuntu xenial-security/universe Sources [12.7 
kB]
Get:73 http://mirrors.kernel.org/ubuntu xenial-security/multiverse Sources [728 
B]
Get:74 http://mirrors.kernel.org/ubuntu xenial-security/main amd64 Packages 
[163 kB]
Get:75 http://mirrors.kernel.org/ubuntu xenial-security/main i386 Packages [159 
kB]
Get:76 http://mirrors.kernel.org/ubuntu xenial-security/main Translation-en 
[67.8 kB]
Get:77 http://mirrors.kernel.org/ubuntu xenial-security/restricted amd64 
Packages [6,576 B]
Get:78 http://mirrors.kernel.org/ubuntu xenial-security/restricted i386 
Packages [6,528 B]
Get:79 http://mirrors.kernel.org/ubuntu xenial-security/restricted 
Translation-en [2,016 B]
Get:80 http://mirrors.kernel.org/ubuntu xenial-security/universe amd64 Packages 
[52.8 kB]
Get:81 http://mirrors.kernel.org/ubuntu xenial-security/universe i386 Packages 
[52.7 kB]
Get:82 http://mirrors.kernel.org/ubuntu xenial-security/universe Translation-en 
[32.6 kB]
Get:83 http://mirrors.kernel.org/ubuntu xenial-security/multiverse amd64 
Packages [2,764 B]
Get:84 http://mirrors.kernel.org/ubuntu xenial-security/multiverse i386 
Packages [2,928 B]
Get:85 http://mirrors.kernel.org/ubuntu xenial-security/multiverse 
Translation-en [1,124 B]
Get:86 http://mirrors.kernel.org/ubuntu precise-updates/main Sources [499 kB]
Get:87 http://mirrors.kernel.org/ubuntu precise-updates/restricted Sources 
[8,840 B]
Get:88 http://mirrors.kernel.org/ubuntu precise-updates/universe Sources [132 
kB]
Get:89 http://mirrors.kernel.org/ubuntu precise-updates/multiverse Sources 
[10.5 kB]
Get:90 http://mirrors.kernel.org/ubuntu precise-security/main Sources [144 kB]
Get:91 http://mirrors.kernel.org/ubuntu precise-security/restricted Sources 
[4,623 B]
Get:92 http://mirrors.kernel.org/ubuntu precise-security/universe Sources [53.7 
kB]
Get:93 http://mirrors.kernel.org/ubuntu precise-security/multiverse Sources 
[3,044 B]
Get:94 http://mirrors.kernel.org/ubuntu precise-proposed/main Sources [6,747 B]
Get:95 http://mirrors.kernel.org/ubuntu precise-proposed/restricted Sources 
[774 B]
Get:96 http://mirrors.kernel.org/ubuntu trusty-updates/main Sources [384 kB]
Ign:13 http://mirrors.kernel.org/ubuntu xenial-proposed InRelease
Get:97 http://mirrors.kernel.org/ubuntu trusty-updates/restricted Sources 
[5,888 B]
Get:98 http://mirrors.kernel.org/ubuntu trusty-updates/universe Sources [169 kB]
Get:99 http://mirrors.kernel.org/ubuntu trusty-updates/multiverse Sources 
[7,522 B]
Get:100 http://mirrors.kernel.org/ubuntu trusty-security/main Sources [120 kB]
Get:101 http://mirrors.kernel.org/ubuntu trusty-security/restricted Sources 
[4,613 B]
Get:102 http://mirrors.kernel.org/ubuntu trusty-security/universe Sources [45.1 
kB]
Get:103 http://mirrors.kernel.org/ubuntu trusty-security/multiverse Sources 
[3,207 B]
Get:104 http://mirrors.kernel.org/ubuntu trusty-proposed/main Sources [122 kB]
Get:105 http://mirrors.kernel.org/ubuntu trusty-proposed/universe Sources [16.6 
kB]
Get:106 http://mirrors.kernel.org/ubuntu xenial-proposed/main Sources [90.6 kB]
Get:107 http://mirrors.kernel.org/ubuntu xenial-proposed/universe Sources [35.2 
kB]
Get:108 http://mirrors.kernel.org/ubuntu xenial-proposed/multiverse Sources 
[900 B]
Get:109 http://archive.canonical.com/ubuntu zesty InRelease [11.4 kB]
Ign:15 http://security.debian.org wheezy/updates InRelease
Get:110 http://security.debian.org wheezy/updates/main Sources [293 kB]
Get:111 http://archive.canonical.com/ubuntu precise Release [8,180 B]
Ign:14 http://mirrors.kernel.org/ubuntu yakkety InRelease
Get:112 http://mirrors.kernel.org/ubuntu yakkety/main Sources [903 kB]
Get:113 http://mirrors.kernel.org/ubuntu yakkety/restricted Sources [5,376 B]
Get:114 http://mirrors.kernel.org/ubuntu yakkety/universe Sources [8,044 kB]
Ign:16 http://mirrors.kernel.org/ubuntu yakkety-updates InRelease
Get:115 http://archive.canonical.com/ubuntu trusty Release [9,359 B]
Ign:17 http://mirrors.kernel.org/ubuntu yakkety-security InRelease
Get:116 http://ftp.debian.org/debian testing InRelease [172 kB]
Get:117 http://mirrors.kernel.org/ubuntu yakkety/multiverse Sources [181 kB]
Get:118 http://mirrors.kernel.org/ubuntu yakkety-updates/main Sources [27.3 kB]
Get:119 http://mirrors.kernel.org/ubuntu yakkety-updates/universe Sources [11.4 
kB]
Get:120 http://mirrors.kernel.org/ubuntu yakkety-updates/multiverse Sources 
[724 B]
Ign:18 http://mirrors.kernel.org/ubuntu yakkety-proposed InRelease
Get:121 http://mirrors.kernel.org/ubuntu yakkety-security/main Sources [13.7 kB]
Get:122 http://mirrors.kernel.org/ubuntu yakkety-security/universe Sources 
[3,404 B]
Get:123 http://archive.canonical.com/ubuntu precise Release.gpg [198 B]
Get:124 http://mirrors.kernel.org/ubuntu yakkety-security/multiverse Sources 
[724 B]
Get:125 http://mirrors.kernel.org/ubuntu yakkety-proposed/main Sources [21.4 kB]
Get:126 http://mirrors.kernel.org/ubuntu yakkety-proposed/universe Sources 
[8,324 B]
Ign:19 http://mirrors.kernel.org/ubuntu zesty InRelease
Get:127 http://mirrors.kernel.org/ubuntu zesty/main Sources [909 kB]
Get:128 http://mirrors.kernel.org/ubuntu zesty/restricted Sources [5,380 B]
Get:129 http://mirrors.kernel.org/ubuntu zesty/universe Sources [8,248 kB]
Ign:20 http://mirrors.kernel.org/ubuntu zesty-updates InRelease
Get:130 http://archive.canonical.com/ubuntu trusty Release.gpg [933 B]
Ign:21 http://mirrors.kernel.org/ubuntu zesty-security InRelease
Ign:22 http://mirrors.kernel.org/ubuntu zesty-proposed InRelease
Get:131 http://mirrors.kernel.org/ubuntu zesty/multiverse Sources [185 kB]
Get:132 http://mirrors.kernel.org/ubuntu zesty-proposed/main Sources [44.9 kB]
Get:133 http://mirrors.kernel.org/ubuntu zesty-proposed/universe Sources [317 
kB]
Get:134 http://mirrors.kernel.org/ubuntu zesty-proposed/multiverse Sources 
[6,136 B]
Ign:26 http://security.ubuntu.com/ubuntu xenial-security InRelease
Ign:30 
http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu vivid 
InRelease
Get:135 http://security.ubuntu.com/ubuntu xenial-security/main Sources [45.5 kB]
Ign:42 http://archive.canonical.com/ubuntu xenial InRelease
Ign:43 http://ppa.launchpad.net/snappy-dev/image/ubuntu vivid InRelease
Ign:136 http://ftp.debian.org/debian jessie InRelease
Get:137 
http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu 
vivid/main Sources [110 kB]
Get:138 http://security.ubuntu.com/ubuntu xenial-security/restricted Sources 
[1,804 B]
Get:139 http://security.ubuntu.com/ubuntu xenial-security/universe Sources 
[12.7 kB]
Get:140 http://security.ubuntu.com/ubuntu xenial-security/multiverse Sources 
[728 B]
Get:141 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages 
[163 kB]
Ign:49 http://archive.canonical.com/ubuntu yakkety InRelease
Get:142 http://archive.canonical.com/ubuntu xenial/partner Sources [2,236 B]
Get:143 http://security.ubuntu.com/ubuntu xenial-security/main i386 Packages 
[159 kB]
Ign:51 http://mirrors.kernel.org/ubuntu precise Release.gpg
Get:144 http://mirrors.kernel.org/ubuntu precise/main Sources [934 kB]
Get:145 http://ftp.debian.org/debian jessie-updates InRelease [145 kB]
Get:146 http://mirrors.kernel.org/ubuntu precise/restricted Sources [5,470 B]
Get:147 http://mirrors.kernel.org/ubuntu precise/universe Sources [5,019 kB]
Get:148 http://security.ubuntu.com/ubuntu xenial-security/main Translation-en 
[67.8 kB]
Get:149 http://archive.canonical.com/ubuntu yakkety/partner Sources [2,252 B]
Ign:52 http://mirrors.kernel.org/ubuntu trusty Release.gpg
Get:150 http://mirrors.kernel.org/ubuntu precise/multiverse Sources [155 kB]
Get:151 http://mirrors.kernel.org/ubuntu trusty/main Sources [1,064 kB]
Get:152 http://security.ubuntu.com/ubuntu xenial-security/restricted amd64 
Packages [6,576 B]
Get:153 http://security.ubuntu.com/ubuntu xenial-security/restricted i386 
Packages [6,528 B]
Get:154 http://security.ubuntu.com/ubuntu xenial-security/restricted 
Translation-en [2,016 B]
Get:155 http://security.ubuntu.com/ubuntu xenial-security/universe amd64 
Packages [52.8 kB]
Get:156 http://security.ubuntu.com/ubuntu xenial-security/universe i386 
Packages [52.7 kB]
Get:157 http://security.ubuntu.com/ubuntu xenial-security/universe 
Translation-en [32.6 kB]
Get:158 http://security.ubuntu.com/ubuntu xenial-security/multiverse amd64 
Packages [2,764 B]
Get:159 http://security.ubuntu.com/ubuntu xenial-security/multiverse i386 
Packages [2,928 B]
Get:160 http://mirrors.kernel.org/ubuntu trusty/restricted Sources [5,433 B]
Get:161 http://mirrors.kernel.org/ubuntu trusty/universe Sources [6,399 kB]
Ign:162 http://ftp.debian.org/debian wheezy InRelease
Get:163 http://security.ubuntu.com/ubuntu xenial-security/multiverse 
Translation-en [1,124 B]
Ign:109 http://archive.canonical.com/ubuntu zesty InRelease
Ign:54 
http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu 
xenial InRelease
Get:164 http://mirrors.kernel.org/ubuntu trusty/multiverse Sources [174 kB]
Get:165 http://ftp.debian.org/debian wheezy-updates InRelease [157 kB]
Ign:31 http://ftp.debian.org/debian unstable InRelease
Get:166 http://archive.canonical.com/ubuntu zesty/partner Sources [1,772 B]
Ign:123 http://archive.canonical.com/ubuntu precise Release.gpg
Ign:130 http://archive.canonical.com/ubuntu trusty Release.gpg
Get:167 http://ftp.debian.org/debian jessie Release [148 kB]
Ign:116 http://ftp.debian.org/debian testing InRelease
Get:168 http://archive.canonical.com/ubuntu precise/partner Sources [5,733 B]
Ign:145 http://ftp.debian.org/debian jessie-updates InRelease
Ign:165 http://ftp.debian.org/debian wheezy-updates InRelease
Get:169 http://ftp.debian.org/debian wheezy Release [191 kB]
Get:170 http://ppa.launchpad.net/snappy-dev/image/ubuntu vivid/main Sources 
[13.3 kB]
Get:171 
http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu 
xenial/main Sources [92.0 kB]
Get:172 http://archive.canonical.com/ubuntu trusty/partner Sources [10.0 kB]
Get:173 http://ftp.debian.org/debian unstable/main Sources [7,214 kB]
Get:174 http://ftp.debian.org/debian unstable/non-free Sources [85.4 kB]
Get:175 http://ftp.debian.org/debian jessie Release.gpg [2,373 B]
Ign:175 http://ftp.debian.org/debian jessie Release.gpg
Get:176 http://ftp.debian.org/debian testing/main Sources [6,571 kB]
Get:177 http://ftp.debian.org/debian testing/non-free Sources [80.2 kB]
Get:178 http://ftp.debian.org/debian jessie-updates/main Sources [15.4 kB]
Get:179 http://ftp.debian.org/debian jessie-updates/non-free Sources [920 B]
Get:180 http://ftp.debian.org/debian wheezy-updates/main Sources [5,505 B]
Get:181 http://ftp.debian.org/debian wheezy-updates/non-free Sources [929 B]
Get:182 http://ftp.debian.org/debian wheezy Release.gpg [2,373 B]
Ign:182 http://ftp.debian.org/debian wheezy Release.gpg
Get:183 http://ftp.debian.org/debian jessie/main Sources [7,059 kB]
Get:184 http://ftp.debian.org/debian jessie/contrib Sources [50.8 kB]
Get:185 http://ftp.debian.org/debian jessie/non-free Sources [99.0 kB]
Get:186 http://ftp.debian.org/debian wheezy/main Sources [5,993 kB]
Get:187 http://ftp.debian.org/debian wheezy/contrib Sources [47.7 kB]
Get:188 http://ftp.debian.org/debian wheezy/non-free Sources [93.4 kB]
Fetched 101 MB in 13s (7,337 kB/s)
Reading package lists...
W: GPG error: http://mirrors.kernel.org/ubuntu xenial InRelease: At least one 
invalid signature was encountered.
W: The repository 'http://mirrors.kernel.org/ubuntu xenial InRelease' is not 
signed.
W: GPG error: http://mirrors.kernel.org/ubuntu xenial-updates InRelease: At 
least one invalid signature was encountered.
W: The repository 'http://mirrors.kernel.org/ubuntu xenial-updates InRelease' 
is not signed.
W: GPG error: http://mirrors.kernel.org/ubuntu xenial-security InRelease: At 
least one invalid signature was encountered.
W: The repository 'http://mirrors.kernel.org/ubuntu xenial-security InRelease' 
is not signed.
W: GPG error: http://mirrors.kernel.org/ubuntu precise-updates InRelease: At 
least one invalid signature was encountered.
W: The repository 'http://mirrors.kernel.org/ubuntu precise-updates InRelease' 
is not signed.
W: GPG error: http://mirrors.kernel.org/ubuntu precise-security InRelease: At 
least one invalid signature was encountered.
W: The repository 'http://mirrors.kernel.org/ubuntu precise-security InRelease' 
is not signed.
W: GPG error: http://mirrors.kernel.org/ubuntu precise-proposed InRelease: At 
least one invalid signature was encountered.
W: The repository 'http://mirrors.kernel.org/ubuntu precise-proposed InRelease' 
is not signed.
W: GPG error: http://mirrors.kernel.org/ubuntu trusty-updates InRelease: At 
least one invalid signature was encountered.
W: The repository 'http://mirrors.kernel.org/ubuntu trusty-updates InRelease' 
is not signed.
W: GPG error: http://security.debian.org jessie/updates InRelease: At least one 
invalid signature was encountered.
W: The repository 'http://security.debian.org jessie/updates InRelease' is not 
signed.
W: GPG error: http://mirrors.kernel.org/ubuntu trusty-security InRelease: At 
least one invalid signature was encountered.
W: The repository 'http://mirrors.kernel.org/ubuntu trusty-security InRelease' 
is not signed.
W: GPG error: http://mirrors.kernel.org/ubuntu trusty-proposed InRelease: At 
least one invalid signature was encountered.
W: The repository 'http://mirrors.kernel.org/ubuntu trusty-proposed InRelease' 
is not signed.
W: GPG error: http://mirrors.kernel.org/ubuntu xenial-proposed InRelease: At 
least one invalid signature was encountered.
W: The repository 'http://mirrors.kernel.org/ubuntu xenial-proposed InRelease' 
is not signed.
W: GPG error: http://security.debian.org wheezy/updates InRelease: At least one 
invalid signature was encountered.
W: The repository 'http://security.debian.org wheezy/updates InRelease' is not 
signed.
W: GPG error: http://mirrors.kernel.org/ubuntu yakkety InRelease: At least one 
invalid signature was encountered.
W: The repository 'http://mirrors.kernel.org/ubuntu yakkety InRelease' is not 
signed.
W: GPG error: http://mirrors.kernel.org/ubuntu yakkety-updates InRelease: At 
least one invalid signature was encountered.
W: The repository 'http://mirrors.kernel.org/ubuntu yakkety-updates InRelease' 
is not signed.
W: GPG error: http://mirrors.kernel.org/ubuntu yakkety-security InRelease: At 
least one invalid signature was encountered.
W: The repository 'http://mirrors.kernel.org/ubuntu yakkety-security InRelease' 
is not signed.
W: GPG error: http://mirrors.kernel.org/ubuntu yakkety-proposed InRelease: At 
least one invalid signature was encountered.
W: The repository 'http://mirrors.kernel.org/ubuntu yakkety-proposed InRelease' 
is not signed.
W: GPG error: http://mirrors.kernel.org/ubuntu zesty InRelease: At least one 
invalid signature was encountered.
W: The repository 'http://mirrors.kernel.org/ubuntu zesty InRelease' is not 
signed.
W: GPG error: http://mirrors.kernel.org/ubuntu zesty-updates InRelease: At 
least one invalid signature was encountered.
W: The repository 'http://mirrors.kernel.org/ubuntu zesty-updates InRelease' is 
not signed.
W: GPG error: http://mirrors.kernel.org/ubuntu zesty-security InRelease: At 
least one invalid signature was encountered.
W: The repository 'http://mirrors.kernel.org/ubuntu zesty-security InRelease' 
is not signed.
W: GPG error: http://mirrors.kernel.org/ubuntu zesty-proposed InRelease: At 
least one invalid signature was encountered.
W: The repository 'http://mirrors.kernel.org/ubuntu zesty-proposed InRelease' 
is not signed.
W: GPG error: http://security.ubuntu.com/ubuntu xenial-security InRelease: At 
least one invalid signature was encountered.
W: The repository 'http://security.ubuntu.com/ubuntu xenial-security InRelease' 
is not signed.
W: GPG error: 
http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu vivid 
InRelease: At least one invalid signature was encountered.
W: The repository 
'http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu 
vivid InRelease' is not signed.
W: GPG error: http://archive.canonical.com/ubuntu xenial InRelease: At least 
one invalid signature was encountered.
W: The repository 'http://archive.canonical.com/ubuntu xenial InRelease' is not 
signed.
W: GPG error: http://ppa.launchpad.net/snappy-dev/image/ubuntu vivid InRelease: 
At least one invalid signature was encountered.
W: The repository 'http://ppa.launchpad.net/snappy-dev/image/ubuntu vivid 
InRelease' is not signed.
W: GPG error: http://archive.canonical.com/ubuntu yakkety InRelease: At least 
one invalid signature was encountered.
W: The repository 'http://archive.canonical.com/ubuntu yakkety InRelease' is 
not signed.
W: GPG error: http://mirrors.kernel.org/ubuntu precise Release: At least one 
invalid signature was encountered.
W: The repository 'http://mirrors.kernel.org/ubuntu precise Release' is not 
signed.
W: GPG error: http://mirrors.kernel.org/ubuntu trusty Release: At least one 
invalid signature was encountered.
W: The repository 'http://mirrors.kernel.org/ubuntu trusty Release' is not 
signed.
W: GPG error: http://archive.canonical.com/ubuntu zesty InRelease: At least one 
invalid signature was encountered.
W: The repository 'http://archive.canonical.com/ubuntu zesty InRelease' is not 
signed.
W: GPG error: 
http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu 
xenial InRelease: At least one invalid signature was encountered.
W: The repository 
'http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu 
xenial InRelease' is not signed.
W: GPG error: http://ftp.debian.org/debian unstable InRelease: At least one 
invalid signature was encountered.
W: The repository 'http://ftp.debian.org/debian unstable InRelease' is not 
signed.
W: GPG error: http://archive.canonical.com/ubuntu precise Release: At least one 
invalid signature was encountered.
W: The repository 'http://archive.canonical.com/ubuntu precise Release' is not 
signed.
W: GPG error: http://archive.canonical.com/ubuntu trusty Release: At least one 
invalid signature was encountered.
W: The repository 'http://archive.canonical.com/ubuntu trusty Release' is not 
signed.
W: GPG error: http://ftp.debian.org/debian testing InRelease: At least one 
invalid signature was encountered.
W: The repository 'http://ftp.debian.org/debian testing InRelease' is not 
signed.
W: GPG error: http://ftp.debian.org/debian jessie-updates InRelease: At least 
one invalid signature was encountered.
W: The repository 'http://ftp.debian.org/debian jessie-updates InRelease' is 
not signed.
W: GPG error: http://ftp.debian.org/debian wheezy-updates InRelease: At least 
one invalid signature was encountered.
W: The repository 'http://ftp.debian.org/debian wheezy-updates InRelease' is 
not signed.
W: GPG error: http://ftp.debian.org/debian jessie Release: At least one invalid 
signature was encountered.
W: The repository 'http://ftp.debian.org/debian jessie Release' is not signed.
W: GPG error: http://ftp.debian.org/debian wheezy Release: At least one invalid 
signature was encountered.
W: The repository 'http://ftp.debian.org/debian wheezy Release' is not signed.


** Changed in: apt (Ubuntu)
       Status: Incomplete => New

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https://bugs.launchpad.net/bugs/1642386

Title:
  At least one invalid signature was encountered.

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