Electrum format missing from latest build

[a49q258k2]

Steps to reproduce

1. Cloned repository from latest bleeding-jumbo. Git commit: 472e179c270b5390e61c233e2299306a0151b8f8
2. Followed required and recommended steps indoc/INSTALL-UBUNTU to the letter. All success.
3. Ran ./john --list=formats. There is no electrum. Electrum hashes are unable to be cracked.

It looks like sometime since electrum was introduced last year, a bug was introduced so that the format is no longer valid / no longer appears. Here are the formats I do have:

root@elec2:~/john/run# ./john --list=formats
descrypt, bsdicrypt, md5crypt, bcrypt, scrypt, LM, AFS, tripcode, 
AndroidBackup, adxcrypt, agilekeychain, aix-ssha1, aix-ssha256, aix-ssha512, 
andOTP, ansible, argon2, as400-des, as400-ssha1, asa-md5, AxCrypt, AzureAD, 
BestCrypt, bfegg, Bitcoin, BitLocker, bitshares, Bitwarden, BKS, 
Blackberry-ES10, WoWSRP, Blockchain, chap, Clipperz, cloudkeychain, 
dynamic_n, cq, CRC32, sha1crypt, sha256crypt, sha512crypt, Citrix_NS10, 
dahua, Django, django-scrypt, dmd5, dmg, dominosec, dominosec8, DPAPImk, 
dragonfly3-32, dragonfly3-64, dragonfly4-32, dragonfly4-64, Drupal7, 
eCryptfs, eigrp, EncFS, enpass, EPI, EPiServer, ethereum, fde, Fortigate256, 
Fortigate, FormSpring, FVDE, geli, gost, gpg, HAVAL-128-4, HAVAL-256-3, hdaa, 
hMailServer, hsrp, IKE, ipb2, itunes-backup, iwork, KeePass, keychain, 
keyring, keystore, known_hosts, krb4, krb5, krb5asrep, krb5pa-sha1, krb5tgs, 
krb5-17, krb5-18, krb5-3, kwallet, lp, lpcli, leet, lotus5, lotus85, LUKS, 
MD2, mdc2, MediaWiki, monero, money, MongoDB, scram, Mozilla, mscash, 
mscash2, MSCHAPv2, mschapv2-naive, krb5pa-md5, mssql, mssql05, mssql12, 
multibit, mysqlna, mysql-sha1, mysql, net-ah, nethalflm, netlm, netlmv2, 
net-md5, netntlmv2, netntlm, netntlm-naive, net-sha1, nk, notes, md5ns, 
nsec3, NT, o10glogon, o3logon, o5logon, ODF, Office, oldoffice, 
OpenBSD-SoftRAID, openssl-enc, oracle, oracle11, Oracle12C, osc, ospf, 
Padlock, Palshop, Panama, PBKDF2-HMAC-MD4, PBKDF2-HMAC-MD5, PBKDF2-HMAC-SHA1, 
PBKDF2-HMAC-SHA256, PBKDF2-HMAC-SHA512, PDF, PEM, pfx, pgpdisk, pgpsda, 
pgpwde, phpass, PHPS, PHPS2, pix-md5, po, pomelo, postgres, PST, PuTTY, 
pwsafe, qnx, RACF, radius, RAdmin, RAKP, rar, RAR5, Raw-SHA512, Raw-Blake2, 
Raw-Keccak, Raw-Keccak-256, Raw-MD4, Raw-MD5, Raw-MD5u, Raw-SHA1, 
Raw-SHA1-AxCrypt, Raw-SHA1-Linkedin, Raw-SHA224, Raw-SHA256, Raw-SHA256-ng, 
Raw-SHA3, Raw-SHA384, Raw-SHA512-ng, ripemd-128, ripemd-160, rsvp, 
Siemens-S7, Salted-SHA1, SSHA512, sapb, sapg, saph, sappse, securezip, 7z, 
Raw-SHA1-ng, Signal, SIP, skein-256, skein-512, skey, SL3, aix-smd5, 
Snefru-128, Snefru-256, LastPass, SNMP, solarwinds, SSH, sspr, Stribog-256, 
Stribog-512, STRIP, SunMD5, SybaseASE, Sybase-PROP, tacacs-plus, tcp-md5, 
telegram, tezos, Tiger, tc_aes_xts, tc_ripemd160, tc_ripemd160boot, 
tc_sha512, tc_whirlpool, vdi, OpenVMS, VNC, vtp, wbb3, whirlpool, whirlpool0, 
whirlpool1, wpapsk, wpapsk-pmk, xmpp-scram, xsha, xsha512, ZIP, ZipMonster, 
plaintext, has-160, HMAC-MD5, HMAC-SHA1, HMAC-SHA224, HMAC-SHA256, 
HMAC-SHA384, HMAC-SHA512, NT-old, dummy, crypt

System configuration

Attach details about your OS and about JtR, including:

• $ ./john --list=build-info.
• $ ./john --list=opencl-devices (if applicable).

root@elec2:~/john/run# ./john --list=build-info
Version: 1.8.0.13-jumbo-1-bleeding-472e179c2 2018-11-09 07:10:42 +0530
Build: linux-gnu 64-bit x86_64 AVX512BW AC OMP
SIMD: AVX512BW, interleaving: MD4:3 MD5:3 SHA1:1 SHA256:1 SHA512:1
CPU tests: AVX512BW
$JOHN is ./
Format interface version: 14
Max. number of reported tunable costs: 4
Rec file version: REC4
Charset file version: CHR3
CHARSET_MIN: 1 (0x01)
CHARSET_MAX: 255 (0xff)
CHARSET_LENGTH: 24
SALT_HASH_SIZE: 1048576
Max. Markov mode level: 400
Max. Markov mode password length: 30
gcc version: 8.2.0
GNU libc version: 2.28 (loaded: 2.28)
Crypto library: OpenSSL
OpenSSL library version: 01010100f
OpenSSL 1.1.1  11 Sep 2018
GMP library version: 6.1.2
File locking: fcntl()
fseek(): fseek
ftell(): ftell
fopen(): fopen
memmem(): System's

[magnumripper]

I presume zlib-dev was missing. Perhaps we should add a warning when building, like some other formats have when requirements are not met.

[a49q258k2]

Thank you!