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,0x43,0x4c,0x98,0xf3,0x99,0x40,0xc7,0xd0,0x83,0x85,0x51}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x4c,0xd5,0x26,0xb9,0x54,0x90,0x72,0xc9,0x7e,0xcb}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x4d,0x3a,0x3a,0x3b,0x71,0xf3,0xfc,0x34,0x65,0xa2}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x4d,0xbd,0x9c,0x32,0xe2,0x69,0x02,0x03,0xd2,0x89}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x4d,0xc0,0xba,0x9c,0xbf,0xb7,0xec,0x4a,0xc3,0x36}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x4e,0x32,0x72,0x6d,0x06,0xe7,0x10,0x25,0x62,0x41}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x4e,0x49,0xea,0x29,0xbc,0x40,0xe2,0x7e,0x70,0x8e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x57,0x0c,0xb7,0x4d,0x77,0x6b,0x27,0x30,0xf8,0x53}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x57,0xe9,0x8d,0xa2,0xcc,0xa9,0xa9,0x9c,0x18,0x7a}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x52,0xf5,0xb7,0x14,0x06,0xdd,0x14,0x1f,0x1e,0xeb}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x53,0x95,0x3d,0x42,0x3e,0x1f,0x1e,0xcc,0x07,0x43}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x53,0xc0,0xba,0x6c,0xfd,0xc0,0xd4,0xe0,0x22,0xb2}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x54,0x46,0xf0,0x8e,0xb3,0x85,0xba,0x2e,0xac,0x84}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x54,0x51,0x6f,0x2b,0x29,0xc8,0x23,0x93,0x07,0x66}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x54,0x5f,0xa9,0x9c,0x4c,0xb4,0x5f,0x27,0x50,0x9e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x55,0x71,0x51,0xd9,0x36,0x98,0x09,0xd6,0x3b,0xff}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x56,0x23,0x78,0xa3,0xb1,0x0c,0x7c,0x87,0xd2,0x32}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x56,0x76,0xeb,0x9b,0xff,0xe7,0x47,0x79,0xfb,0x50}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x5e,0xed,0xd2,0x89,0x48,0xd5,0x83,0x17,0x6a,0x01}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x5f,0x38,0x14,0x4a,0x97,0x39,0xff,0x12,0x07,0xb0}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x5f,0x7d,0xd3,0x77,0x5b,0x23,0x12,0x40,0xd2,0x49}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x5f,0xad,0xd5,0x0c,0x88,0x35,0xa4,0x66,0x97,0xb3}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x5f,0xc1,0xc2,0x32,0x38,0x2d,0xd4,0x93,0x31,0x81}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x5f,0xe4,0xb7,0x48,0x49,0x84,0x02,0x82,0x8a,0x56}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x58,0x00,0x54,0xc2,0xb3,0x71,0xbe,0x34,0x95,0x7a}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x58,0x0f,0xef,0xf9,0x57,0x09,0x82,0x6b,0x6e,0x9a}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x58,0x61,0xa0,0x7d,0xed,0x7b,0x2a,0x8b,0x6a,0x0e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x58,0xb9,0x66,0xbe,0x0b,0xd7,0xeb,0x86,0x23,0x7d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x58,0xdc,0x52,0x84,0xaf,0x56,0xd3,0xe1,0x7f,0x1f}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x59,0x0e,0xf6,0x19,0x6a,0x45,0x5c,0x18,0x6a,0x0e}, 8333},