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,0x04,0x52,0xc0,0x01,0x01,0x03,0xfb,0x00,0x00,0x00,0x00,0x00,0x00,0x4c,0x27}, 8333},
    {{0x2a,0x04,0xee,0x41,0x00,0x83,0x50,0xdf,0xd9,0x08,0xf7,0x1d,0x2a,0x86,0xb3,0x37}, 8333},
    {{0x2a,0x05,0x6d,0x40,0xb9,0x4e,0xd1,0x00,0x02,0x25,0x90,0xff,0xfe,0x0d,0xcf,0xc2}, 8333},
    {{0x2a,0x05,0xe5,0xc0,0x00,0x00,0x01,0x00,0x02,0x50,0x56,0xff,0xfe,0xb9,0xd6,0xcb}, 8333},
    {{0x2a,0x05,0xfc,0x87,0x00,0x01,0x00,0x06,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02}, 8333},
    {{0x2a,0x05,0xfc,0x87,0x00,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x08}, 8333},
    {{0x2a,0x07,0x57,0x41,0x00,0x00,0x11,0x5d,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01}, 8333},
    {{0x2a,0x07,0xa8,0x80,0x46,0x01,0x10,0x62,0xb4,0xb4,0xbd,0x2a,0x39,0xd4,0x7a,0xcf}, 51401},
    {{0x2a,0x07,0xab,0xc4,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x09,0x46}, 8333},
    {{0x2a,0x07,0xb4,0x00,0x00,0x01,0x03,0x4c,0x00,0x00,0x00,0x00,0x00,0x02,0x10,0x02}, 8333},
    {{0x2a,0x0a,0x8c,0x41,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xb4}, 8333},
    {{0x2a,0x0a,0xc8,0x01,0x00,0x01,0x00,0x07,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x83}, 8333},
    {{0x2a,0x0b,0xae,0x40,0x00,0x03,0x4a,0x0a,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x15}, 8333},
    {{0x2a,0x0f,0xdf,0x00,0x00,0x00,0x02,0x54,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x46}, 8333},
    {{0x2c,0x0f,0xf5,0x98,0x00,0x05,0x00,0x01,0x10,0x01,0x00,0x00,0x00,0x00,0x00,0x01}, 8333},
    {{0x2c,0x0f,0xfc,0xe8,0x00,0x00,0x04,0x00,0x0b,0x7c,0x00,0x00,0x00,0x00,0x00,0x01}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xd6,0xbc,0x4a,0x3c,0x6d,0x03,0xa9,0x4e,0x1f,0x55}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xd6,0x8f,0xf0,0xf8,0xbb,0x10,0x00,0x18,0x42,0x54}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xd6,0xec,0x32,0xc1,0x59,0x9c,0xd8,0x46,0xd5,0x48}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xd6,0xf0,0x8d,0x96,0x37,0xc3,0x27,0x61,0x9a,0x24}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xd0,0x12,0xe6,0xed,0x8e,0xc1,0x78,0x8d,0x1c,0x21}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xd0,0x4a,0xc5,0xbd,0x5d,0xe9,0xca,0x57,0xaf,0xc4}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xd0,0x94,0xc0,0x97,0xd2,0x32,0xed,0x81,0x92,0x67}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xd1,0xd5,0x49,0x23,0xa6,0x10,0x01,0x49,0xda,0x05}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xd2,0x2a,0x76,0x2c,0x37,0x09,0x9a,0xa1,0x61,0x4b}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xd3,0x19,0x77,0x50,0xf5,0xf3,0x48,0x17,0x59,0x50}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xd4,0x24,0xda,0xf8,0x97,0x6d,0x28,0x80,0x47,0xf9}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xd4,0x28,0x30,0x9d,0x6d,0xac,0x1e,0xb4,0x6e,0x59}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xd5,0x13,0x71,0x95,0xd5,0x2e,0x12,0xf6,0x0e,0x6e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xd5,0xc6,0x62,0x50,0xb1,0x22,0xb6,0x4a,0x31,0x56}, 8333},