prepare_keychain fails silently

[ghost]

I'm trying to create a subkey for one of our servers which has gpg2, and when I get to the point of trying to decrypt the files, I get stuck with a failing prepare_keyring. Looks like the command gpg2 --keyring /home/user/project/keyrings/live/pubring.kbx --export returns an error even though the output looks good. I'm not sure if the problem is with my keys or with blackbox.

user@host:~/project$ GPG=gpg2 bash -x `which blackbox_postdeploy`
+ export PATH=/usr/bin:/bin:/home/user/bin:/home/user/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
+ PATH=/usr/bin:/bin:/home/user/bin:/home/user/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
+ set -e
+ source /usr/local/bin/_blackbox_common.sh
++ source /usr/local/bin/_stack_lib.sh
+++ cd /usr/local/bin
+++ pwd
++ : /usr/local/bin
++ declare -a BLACKBOXDATA_CANDIDATES
++ BLACKBOXDATA_CANDIDATES=('.blackbox' 'keyrings/live')
++ : vi
++ : gpg2
++ which git
++ git rev-parse --show-toplevel
++ VCS_TYPE=git
+++ git rev-parse --show-toplevel
++ REPOBASE=/home/user/project
++ export VCS_TYPE
+++ physical_directory_of /home/user/project
++++ dirname /home/user/project
+++ local d=/home/user
++++ basename /home/user/project
+++ local f=project
+++ cd /home/user
++++ pwd -P
++++ sed 's/\/$//'
+++ echo /home/user/project
++ export REPOBASE=/home/user/project
++ REPOBASE=/home/user/project
++ [[ -n '' ]]
++ '[' -z '' ']'
++ BLACKBOXDATA=.blackbox
++ for candidate in '${BLACKBOXDATA_CANDIDATES[@]}'
++ '[' -d /home/user/project/.blackbox ']'
++ for candidate in '${BLACKBOXDATA_CANDIDATES[@]}'
++ '[' -d /home/user/project/keyrings/live ']'
++ BLACKBOXDATA=keyrings/live
++ break
++ KEYRINGDIR=/home/user/project/keyrings/live
++ BB_ADMINS_FILE=blackbox-admins.txt
++ BB_ADMINS=/home/user/project/keyrings/live/blackbox-admins.txt
++ BB_FILES_FILE=blackbox-files.txt
++ BB_FILES=/home/user/project/keyrings/live/blackbox-files.txt
++ SECRING=/home/user/project/keyrings/live/secring.gpg
++ : 0022
+ [[ '' == '' ]]
+ FILE_GROUP=
+ change_to_vcs_root
+ local rbase=/home/user/project
+ cd /home/user/project
+ prepare_keychain
+ local keyringasc
+ echo '========== Importing keychain: START'
========== Importing keychain: START
+ make_self_deleting_tempfile keyringasc
+ local __resultvar=keyringasc
+ local name
+ case $(uname -s) in
++ uname -s
++ mktemp
+ name=/tmp/tmp.daEPkMZLbX
+ add_on_exit rm -f /tmp/tmp.daEPkMZLbX
+ local n=0
+ on_exit_items[$n]='rm -f /tmp/tmp.daEPkMZLbX'
+ [[ 0 -eq 0 ]]
+ trap on_exit EXIT
+ eval keyringasc=/tmp/tmp.daEPkMZLbX
++ keyringasc=/tmp/tmp.daEPkMZLbX
+ export LANG=C.UTF-8
+ LANG=C.UTF-8
+ [[ gpg2 != \g\p\g\2 ]]
+ gpg2 --import
++ get_pubring_path
++ [[ -f /home/user/project/keyrings/live/pubring.gpg ]]
++ echo /home/user/project/keyrings/live/pubring.kbx
+ gpg2 --keyring /home/user/project/keyrings/live/pubring.kbx --export
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: key 0FABA1E6: "user@staging.flashnode.io <user@host.domain.com>" not changed
gpg: key 79C263EC: "user2 <developers@domain.com>" not changed
gpg: key E5CA7402: "user3 <user3@domain.com>" not changed
gpg: key D7D027C4: "user@host2.domain.com <user@host2.domain.com>" not changed
gpg: key 79C263EC: "user2 <developers@domain.com>" not changed
gpg: key E5CA7402: "user3 <user3@domain.com>" not changed
gpg: key D7D027C4: "user@host2.domain.com <user@host2.domain.com>" not changed
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: skipped packet of type 12 in keybox
gpg: key 0FABA1E6: "user@host.domain.com <user@host.domain.com>" not changed
gpg: Total number processed: 8
gpg:              unchanged: 8
+ on_exit
+ for i in '"${on_exit_items[@]}"'
+ eval rm -f /tmp/tmp.daEPkMZLbX
++ rm -f /tmp/tmp.daEPkMZLbX