[buildd-tools-devel] Bug#869923: sbuild --extra-package causes fatal "permission denied" error during "apt-get update"

[Tianon Gravi]

Package: sbuild
Version: 0.73.0-4
Severity: normal

While attempting to use sbuild to test the reverse-dependencies of a
package before uploading a new upstream revision, I ran into the
following error using "--extra-package":

| $ sbuild --arch-all --dist=unstable --nolog golang-gopkg-pg.v5_5.3.3-2 --extra-package=golang-github-jinzhu-inflection-dev_0.0~git20170102.0.1c35d90-1_all.deb
|
| ...
|
| +------------------------------------------------------------------------------+
| | Update chroot                                                                |
| +------------------------------------------------------------------------------+
| 
| Get:1 file:/build/golang-gopkg-pg.v5-8YE5po/resolver-71vQn3/apt_archive ./ InRelease
| Ign:1 file:/build/golang-gopkg-pg.v5-8YE5po/resolver-71vQn3/apt_archive ./ InRelease
| Get:2 file:/build/golang-gopkg-pg.v5-8YE5po/resolver-71vQn3/apt_archive ./ Release [948 B]
| Get:2 file:/build/golang-gopkg-pg.v5-8YE5po/resolver-71vQn3/apt_archive ./ Release [948 B]
| Get:4 file:/build/golang-gopkg-pg.v5-8YE5po/resolver-71vQn3/apt_archive ./ Release.gpg
| Ign:4 file:/build/golang-gopkg-pg.v5-8YE5po/resolver-71vQn3/apt_archive ./ Release.gpg
| Get:5 file:/build/golang-gopkg-pg.v5-8YE5po/resolver-71vQn3/apt_archive ./ Packages [493 B]
| Get:3 http://cdn-fastly.deb.debian.org/debian unstable InRelease [229 kB]
| Ign:5 file:/build/golang-gopkg-pg.v5-8YE5po/resolver-71vQn3/apt_archive ./ Packages
| Get:5 file:/build/golang-gopkg-pg.v5-8YE5po/resolver-71vQn3/apt_archive ./ Packages [777 B]
| Err:5 file:/build/golang-gopkg-pg.v5-8YE5po/resolver-71vQn3/apt_archive ./ Packages
|   Could not open file /var/lib/apt/lists/partial/_build_golang-gopkg-pg.v5-8YE5po_resolver-71vQn3_apt%5farchive_._Packages - open (13: Permission denied)
| Get:6 http://cdn-fastly.deb.debian.org/debian unstable/main Sources [9913 kB]
| Get:7 http://cdn-fastly.deb.debian.org/debian unstable/main amd64 Packages [10.2 MB]
| Fetched 20.3 MB in 1s (11.2 MB/s)
| Reading package lists...
| E: Failed to fetch store:/var/lib/apt/lists/partial/_build_golang-gopkg-pg.v5-8YE5po_resolver-71vQn3_apt%5farchive_._Packages  Could not open file /var/lib/apt/lists/partial/_build_golang-gopkg-pg.v5-8YE5po_resolver-71vQn3_apt%5farchive_._Packages - open (13: Permission denied)
| E: Some index files failed to download. They have been ignored, or old ones used instead.
| E: apt-get update failed

The ".deb" file I'm attempting to include was created by a previous
sbuild run (without "--extra-package").

Things I've tried (with no success):

- reordering flags so "--extra-package" is before the package name to
  build
- "sbuild" from unstable (currently using "stretch")
- "--dist=stretch"
- doing "sbuild-update -udcar unstable" first
- using "dget" to download the DSC of the target package directly before
  building
- creating a fresh new schroot

Eventually I just had someone else run the command for me to verify that
there's no breakage, but that is less than ideal. :)

If I remove the "--extra-package" flag, everything builds successfully
(but without my updated package, which is what I'm really testing, so
not horribly useful).

Also, thanks for your work maintaining "sbuild" -- I really enjoy it! :)

♥,
- Tianon
  4096R / B42F 6819 007F 00F8 8E36  4FD4 036A 9C25 BF35 7DD4

-- System Information:
Debian Release: 9.1
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-3-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8), LANGUAGE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages sbuild depends on:
ii  adduser         3.115
ii  libsbuild-perl  0.73.0-4
ii  perl            5.24.1-3+deb9u1

Versions of packages sbuild recommends:
ii  autopkgtest  4.4
ii  debootstrap  1.0.89
ii  schroot      1.6.10-3+b1

Versions of packages sbuild suggests:
pn  deborphan  <none>
ii  kmod       23-2
ii  wget       1.18-5

-- no debconf information