One of my nodes using `onlynet=tor` nodes is completely broken with current master as of 97a35f3ae5bff7f4a25d37d8961191fdbc8c5b67.

Tor is manually configured. Relevant `bitcoin.conf`:
```
onlynet=onion
proxy=127.0.0.1:9050
onion=127.0.0.1:9050
```

It does not manage to make any outgoing connections. The log has an endless stream of:
```
2021-03-03T13:42:13Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:13Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:14Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:14Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:15Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:15Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:16Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:16Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:17Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:17Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:18Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:18Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:19Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:19Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:20Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:20Z Socks5() connect to […].onion:8333 failed: general failure
…
```
(multiple messages per second, all `[…]` are short v2 onion addresses)

```
$ systemctl status tor
● tor.service - Anonymizing overlay network for TCP
     Loaded: loaded (/etc/systemd/system/tor.service; enabled; vendor preset: enabled)
     Active: active (running) since Wed 2021-03-03 14:45:24 CET; 3min 0s ago
    Process: 158931 ExecStartPre=/opt/tor/bin/tor -f /opt/tor/etc/tor/torrc --verify-config (code=exited, status=0/SUCCESS)
   Main PID: 158962 (tor)
      Tasks: 1 (limit: 9367)
     Memory: 38.4M
     CGroup: /system.slice/tor.service
             └─158962 /opt/tor/bin/tor -f /opt/tor/etc/tor/torrc

Mar 03 14:48:20 tor[158962]: Mar 03 14:48:20.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:20 tor[158962]: Mar 03 14:48:20.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:21 tor[158962]: Mar 03 14:48:21.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:21 tor[158962]: Mar 03 14:48:21.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:22 tor[158962]: Mar 03 14:48:22.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:22 tor[158962]: Mar 03 14:48:22.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:23 tor[158962]: Mar 03 14:48:23.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:23 tor[158962]: Mar 03 14:48:23.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:24 tor[158962]: Mar 03 14:48:24.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:24 tor[158962]: Mar 03 14:48:24.000 [warn] Invalid hostname [scrubbed]; rejecting
```

I'll try to see if I can figure out what it's sending. Tor (current master) is otherwise successfully able to connect to hidden services, at least v3 ones.

Did Tor completely remove v2 support?

```
$ /opt/tor/bin/tor --version
Tor version 0.4.6.0-alpha-dev (git-8020ae02abb105db).
Tor is running on Linux with Libevent 2.1.11-stable, OpenSSL 1.1.1f, Zlib 1.2.11, Liblzma 5.2.4, Libzstd N/A and Glibc 2.31 as libc.
Tor compiled with GCC version 9.3.0
```
{{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x18,0xdf,0x33,0xe9,0x96,0x9e,0xe3,0x2a,0xb9,0xc6}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x19,0x63,0x6c,0x83,0xe5,0x11,0x04,0xa6,0xb5,0x92}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x1a,0x6c,0x74,0x95,0x3c,0x89,0xf6,0xec,0xef,0x09}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x1a,0x95,0xd6,0x31,0xe4,0xea,0x66,0x97,0x0d,0x5d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x1b,0x93,0xbc,0x99,0x92,0x0e,0x69,0x16,0x40,0xcf}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x1b,0xc4,0x4e,0x17,0x71,0x14,0x06,0x3c,0x86,0xfd}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x1c,0x6c,0xed,0xd5,0xb7,0x11,0xfa,0xec,0x94,0x2e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x1d,0x10,0xa5,0x20,0x77,0x43,0xf6,0xbc,0x12,0xed}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x1d,0x20,0x35,0xa1,0xf3,0x16,0xb4,0x8f,0x1c,0xbd}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x1d,0x30,0xfe,0x09,0xc7,0xe8,0xfe,0xd3,0xee,0x83}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x1d,0x33,0xd9,0xd9,0xdb,0xcf,0xc5,0xde,0xae,0xe9}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x1d,0x69,0xe1,0xac,0x11,0xf1,0x32,0x2f,0x5c,0x8d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x1e,0x3d,0x98,0x4b,0x9e,0xc0,0x96,0x40,0x63,0x0f}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x1e,0x75,0x81,0xb1,0x3b,0xc4,0x22,0x26,0x72,0x3f}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x26,0x83,0xa0,0x76,0x54,0xa8,0xc1,0x6c,0xde,0x83}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x26,0xf6,0x7e,0xfd,0x3a,0x25,0x94,0xa8,0x49,0xbd}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x27,0x54,0x94,0x03,0x1f,0x7e,0x53,0xd8,0x3f,0x35}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x27,0xd0,0xa7,0x73,0x43,0xd5,0xb2,0x26,0x57,0x1c}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x20,0x3c,0x17,0x1f,0x8a,0x74,0xe1,0xdf,0x5a,0x5d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x21,0x47,0x7f,0x18,0x5c,0x97,0x49,0x9c,0x40,0x86}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x21,0x62,0xfa,0x51,0x02,0xf5,0x14,0x4c,0x40,0x52}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x21,0xa3,0x41,0x6c,0x28,0xda,0x27,0x1a,0x78,0xd0}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x24,0x45,0xe9,0xa6,0x5a,0xa0,0xb0,0x01,0xaf,0x5b}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x25,0x09,0xa6,0xf6,0x4a,0xec,0xd5,0x33,0x74,0x35}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x26,0x55,0x1f,0xca,0x70,0xe5,0xbe,0xe3,0xa6,0x33}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x2e,0xdb,0x8c,0x24,0x20,0xf2,0x9f,0x7c,0xb4,0xea}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x28,0x21,0xfd,0xd5,0x3c,0x78,0xa5,0xfd,0xcc,0xf4}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x28,0xeb,0x35,0xa7,0x6f,0x90,0x83,0x7a,0x1f,0xfd}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x29,0x86,0xfb,0xba,0xbc,0x6e,0x6f,0x53,0x89,0xf5}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x2a,0x25,0x08,0x7a,0xb9,0x56,0xd9,0xe9,0xeb,0x5d}, 8333},