Failed to hash passwords

[jetbug123]

I have upgraded from NC13 to NC14 from docker and with 2 accounts I can't login anymore.
Because the password field only contains "2|" after the password was rehashed.
Happens also when I change the user password.

Steps to reproduce

Upgrade from NC 13 to NC 14

Expected behaviour

Passwords will be rehashed in Argon2

Actual behaviour

On 2 Users the password field only contains "2|" and the users are unable to login.

Server configuration detail

Operating system: Linux 4.4.0-134-generic

Webserver: Apache/2.4.25 (Debian) (apache2handler)

Database: mysql 5.7.23

PHP version:

7.2.9

Nextcloud version: 14.0.0 - 14.0.0.19

Updated from an older Nextcloud/ownCloud or fresh install: NC 13

Where did you install Nextcloud from: Docker

List of activated apps

Enabled:
 - accessibility: 1.0.1
 - activity: 2.7.0
 - cloud_federation_api: 0.0.1
 - comments: 1.4.0
 - dav: 1.6.0
 - encryption: 2.2.0
 - federatedfilesharing: 1.4.0
 - federation: 1.4.0
 - files: 1.9.0
 - files_pdfviewer: 1.3.2
 - files_sharing: 1.6.2
 - files_texteditor: 2.6.0
 - files_trashbin: 1.4.1
 - files_versions: 1.7.1
 - files_videoplayer: 1.3.0
 - firstrunwizard: 2.3.0
 - gallery: 18.1.0
 - issuetemplate: 0.4.0
 - logreader: 2.0.0
 - lookup_server_connector: 1.2.0
 - nextcloud_announcements: 1.3.0
 - notifications: 2.2.1
 - oauth2: 1.2.1
 - password_policy: 1.4.0
 - provisioning_api: 1.4.0
 - serverinfo: 1.4.0
 - sharebymail: 1.4.0
 - support: 1.0.0
 - survey_client: 1.2.0
 - systemtags: 1.4.0
 - theming: 1.5.0
 - twofactor_backupcodes: 1.3.1
 - updatenotification: 1.4.1
 - workflowengine: 1.4.0
Disabled:
 - admin_audit
 - files_external
 - user_external
 - user_ldap

Configuration (config/config.php)

{
    "memcache.local": "\\OC\\Memcache\\APCu",
    "memcache.locking": "\\OC\\Memcache\\Redis",
    "filelocking.enabled": "true",
    "redis": {
        "host": "***REMOVED SENSITIVE VALUE***",
        "port": 6379
    },
    "apps_paths": [
        {
            "path": "\/var\/www\/html\/apps",
            "url": "\/apps",
            "writable": false
        },
        {
            "path": "\/var\/www\/html\/custom_apps",
            "url": "\/custom_apps",
            "writable": true
        }
    ],
    "instanceid": "***REMOVED SENSITIVE VALUE***",
    "passwordsalt": "***REMOVED SENSITIVE VALUE***",
    "secret": "***REMOVED SENSITIVE VALUE***",
    "trusted_domains": [
        "xxx"
    ],
    "datadirectory": "***REMOVED SENSITIVE VALUE***",
    "overwrite.cli.url": "xxxx",
    "dbtype": "mysql",
    "version": "14.0.0.19",
    "dbname": "***REMOVED SENSITIVE VALUE***",
    "dbhost": "***REMOVED SENSITIVE VALUE***",
    "dbport": "",
    "dbtableprefix": "oc_",
    "mysql.utf8mb4": true,
    "dbuser": "***REMOVED SENSITIVE VALUE***",
    "dbpassword": "***REMOVED SENSITIVE VALUE***",
    "installed": true,
    "mail_smtpmode": "smtp",
    "mail_smtpauthtype": "LOGIN",
    "mail_smtpauth": 1,
    "mail_from_address": "***REMOVED SENSITIVE VALUE***",
    "mail_domain": "***REMOVED SENSITIVE VALUE***",
    "mail_smtpsecure": "ssl",
    "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
    "mail_smtpport": "465",
    "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
    "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
    "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
    "forwarded_for_headers": [
        "HTTP_X_FORWARDED_FOR"
    ],
    "maintenance": false,
    "theme": "",
    "loglevel": 1
}

Are you using encryption: 1

Client configuration

Browser: Mozilla/5.0 (X11; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0

Operating system: Arch

Logs

Nextcloud log

{"reqId":"xqX6drMcYtsySwzNi9P9","level":3,"time":"2018-09-10T16:48:19+00:00","remoteAddr":"xxxxx","user":"xxxxx","app":"PHP","method":"POST","url":"\/index.php\/login","message":"password_hash(): Threading failure at \/var\/www\/html\/lib\/private\/Security\/Hasher.php#80","userAgent":"Mozilla\/5.0 (X11; Linux x86_64; rv:62.0) Gecko\/20100101 Firefox\/62.0","version":"14.0.0.19"}

[nextcloud-bot]

GitMate.io thinks possibly related issues are #5746 (Create user failed / password policy crash), #7218 (No feedback after password (re)set), #3826 (Password confirmation fails on some settings), #8785 (Password expiration), and #3847 (No error message displayed when create new user fails due to weak password).