Comment 23 for bug 1920640

I tested this again in the Ubuntu Error Tracker using ubuntu-dbgsym-keyring version 2018.09.18.1~18.04.2 and retracing started working again.

2021-03-30 19:11:42,253:21370:140207348864832:INFO:root:64b7ba98-918a-11eb-8a05-fa163e7a7275:swift:Processing.
2021-03-30 19:11:42,389:21370:140207348864832:INFO:root:64b7ba98-918a-11eb-8a05-fa163e7a7275:swift:Decompressing to /tmp/tmpWpOfew-swift.64b
7ba98-918a-11eb-8a05-fa163e7a7275.oopsid.core
2021-03-30 19:11:42,527:21370:140207348864832:INFO:root:64b7ba98-918a-11eb-8a05-fa163e7a7275:swift:Retracing 64b7ba98-918a-11eb-8a05-fa163e7
a7275:swift with sandbox-dir /srv/daisy.staging.ubuntu.com/devel/cache/Ubuntu 21.04/cache-bryjaH/sandbox with cache /srv/daisy.staging.ubunt
u.com/devel/cache/Ubuntu 21.04/cache-bryjaH/cache
2021-03-30 19:11:46,738:21370:140207348864832:INFO:root:64b7ba98-918a-11eb-8a05-fa163e7a7275:swift:Apport's return code was 1.
2021-03-30 19:11:46,738:21370:140207348864832:INFO:root:64b7ba98-918a-11eb-8a05-fa163e7a7275:swift:ERROR: W:Download is performed unsandboxe
d as root as file '/srv/daisy.staging.ubuntu.com/devel/cache/Ubuntu 21.04/cache-bryjaH/cache/Ubuntu 21.04/apt/var/lib/apt/lists/partial/arch
ive.ubuntu.com_ubuntu_dists_hirsute_InRelease' couldn't be accessed by user '_apt'. - pkgAcquire::Run (13: Permission denied), W:GPG error:
http://ddebs.ubuntu.com hirsute Release: The following signatures were invalid: EXPKEYSIG C8CAB6595FDFF622 Ubuntu Debug Symbol Archive Autom
atic Signing Key (2016) <email address hidden>, E:The repository 'http://ddebs.ubuntu.com hirsute Release' is not signed., W:Upda
ting from such a repository can't be done securely, and is therefore disabled by default., W:See apt-secure(8) manpage for repository creati
on and user configuration details., W:GPG error: http://ddebs.ubuntu.com hirsute-updates Release: The following signatures were invalid: EXP
KEYSIG C8CAB6595FDFF622 Ubuntu Debug Symbol Archive Automatic Signing Key (2016) <email address hidden>, E:The repository 'http:/
/ddebs.ubuntu.com hirsute-updates Release' is not signed.
2021-03-30 19:11:46,738:21370:140207348864832:INFO:root:64b7ba98-918a-11eb-8a05-fa163e7a7275:swift:Will retry (64b7ba98-918a-11eb-8a05-fa163
e7a7275) due to a transient error.
2021-03-30 19:11:46,740:21370:140207348864832:INFO:root:64b7ba98-918a-11eb-8a05-fa163e7a7275:swift:Processing.
2021-03-30 19:11:46,931:21370:140207348864832:INFO:root:64b7ba98-918a-11eb-8a05-fa163e7a7275:swift:Decompressing to /tmp/tmpn7RBHi-swift.64b
7ba98-918a-11eb-8a05-fa163e7a7275.oopsid.core
2021-03-30 19:11:47,078:21370:140207348864832:INFO:root:64b7ba98-918a-11eb-8a05-fa163e7a7275:swift:Retracing 64b7ba98-918a-11eb-8a05-fa163e7
a7275:swift with sandbox-dir /srv/daisy.staging.ubuntu.com/devel/cache/Ubuntu 21.04/cache-bryjaH/sandbox with cache /srv/daisy.staging.ubunt
u.com/devel/cache/Ubuntu 21.04/cache-bryjaH/cache
2021-03-30 19:12:48,786:21370:140207348864832:INFO:root:64b7ba98-918a-11eb-8a05-fa163e7a7275:swift:Writing back to Cassandra
2021-03-30 19:12:48,888:21370:140207348864832:INFO:root:64b7ba98-918a-11eb-8a05-fa163e7a7275:swift:Successfully retraced.