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
```
{{0x2a,0x01,0x07,0xa7,0x00,0x02,0x14,0x67,0x0e,0xc4,0x7a,0xff,0xfe,0xe2,0x56,0x90}, 8333},
    {{0x2a,0x01,0x07,0xc8,0xd0,0x02,0x01,0x0f,0x50,0x54,0x00,0xff,0xfe,0x5c,0xda,0xc7}, 8333},
    {{0x2a,0x01,0x07,0xc8,0xd0,0x02,0x03,0x18,0x50,0x54,0x00,0xff,0xfe,0xbe,0xcb,0xb1}, 8333},
    {{0x2a,0x01,0x87,0x40,0x00,0x01,0xff,0xc5,0x00,0x00,0x00,0x00,0x00,0x00,0x8c,0x6a}, 8333},
    {{0x2a,0x01,0xcb,0x00,0x0f,0x98,0xca,0x00,0x50,0x54,0x00,0xff,0xfe,0xd4,0x76,0x3d}, 8333},
    {{0x2a,0x01,0xcb,0x14,0x0c,0xf6,0xbc,0x00,0x21,0xe5,0xf1,0x2e,0x32,0xc8,0x01,0x45}, 8333},
    {{0x2a,0x01,0x00,0xd0,0x00,0x00,0x00,0x1c,0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x45}, 8333},
    {{0x2a,0x01,0x00,0xd0,0xbe,0xf2,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x12}, 8333},
    {{0x2a,0x01,0x0e,0x35,0x2e,0x40,0x68,0x30,0x02,0x11,0x32,0xff,0xfe,0xa6,0xde,0x3d}, 8333},
    {{0x2a,0x02,0x12,0x05,0xc6,0xaa,0x60,0xc0,0x70,0xd8,0xaa,0xee,0xa8,0x2d,0x99,0x3c}, 8333},
    {{0x2a,0x02,0x01,0x69,0x05,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x06,0x14}, 8333},
    {{0x2a,0x02,0x01,0x80,0x00,0x01,0x00,0x01,0x00,0x00,0x00,0x00,0x5b,0x8f,0x53,0x8c}, 8333},
    {{0x2a,0x02,0x03,0x48,0x00,0x62,0x5e,0xf7,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01}, 8333},
    {{0x2a,0x02,0x03,0x90,0x90,0x00,0x00,0x00,0x02,0x18,0x7d,0xff,0xfe,0x10,0xbe,0x33}, 8333},
    {{0x2a,0x02,0x7a,0xa0,0x16,0x19,0x00,0x00,0x00,0x00,0x00,0x00,0x0a,0xdc,0x8d,0xe0}, 8333},
    {{0x2a,0x02,0x7b,0x40,0xb0,0xdf,0x89,0x25,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01}, 8333},
    {{0x2a,0x02,0x7b,0x40,0xb9,0x05,0x37,0xdb,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01}, 8333},
    {{0x2a,0x02,0x81,0x0d,0x8c,0xbf,0xf3,0xa8,0x96,0xc6,0x91,0xff,0xfe,0x17,0xae,0x1d}, 8333},
    {{0x2a,0x02,0x83,0x89,0x01,0xc0,0x96,0x80,0x02,0x01,0x2e,0xff,0xfe,0x82,0xb3,0xcc}, 8333},
    {{0x2a,0x02,0xa4,0x54,0xa5,0x16,0x00,0x01,0x05,0x17,0x09,0x28,0x7e,0x0d,0x95,0x7c}, 8333},
    {{0x2a,0x02,0x0a,0xf8,0xfa,0xb0,0x08,0x04,0x01,0x51,0x02,0x36,0x00,0x34,0x01,0x61}, 8333},
    {{0x2a,0x02,0x0a,0xf8,0xfa,0xb0,0x08,0x08,0x00,0x85,0x02,0x34,0x01,0x45,0x01,0x32}, 8333},
    {{0x2a,0x02,0x0e,0x00,0xff,0xf0,0x01,0xe2,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0a}, 8333},
    {{0x2a,0x03,0x22,0x60,0x30,0x06,0x00,0x0d,0xd3,0x07,0x5d,0x1d,0x32,0xca,0x1f,0xe8}, 8333},
    {{0x2a,0x03,0x60,0x00,0x08,0x70,0x00,0x00,0x00,0x46,0x00,0x23,0x00,0x87,0x02,0x18}, 8333},
    {{0x2a,0x03,0x9d,0xa0,0x00,0xf6,0x00,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02}, 8333},
    {{0x2a,0x03,0xc9,0x80,0x00,0xdb,0x00,0x47,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}, 8333},
    {{0x2a,0x03,0xe2,0xc0,0x01,0xce,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02}, 8333},
    {{0x2a,0x04,0x35,0x44,0x10,0x00,0x15,0x10,0x70,0x6c,0xab,0xff,0xfe,0x6c,0x50,0x1c}, 8333},
    {{0x2a,0x04,0x52,0xc0,0x01,0x01,0x03,0x83,0x00,0x00,0x00,0x00,0x00,0x00,0x2a,0x87}, 8333},