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,0x43,0xc6,0x47,0x01,0xca,0x17,0xe1,0x47,0x46,0x9b,0xd6}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xce,0xf6,0xda,0x2a,0x7f,0x69,0x90,0xad,0x89,0xe4}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xce,0xf1,0x60,0x80,0x76,0xe7,0x9a,0x36,0xdc,0xc7}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xcf,0x98,0x18,0x43,0xeb,0x5d,0xd7,0x16,0xf1,0x50}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc8,0x76,0xb8,0x89,0x52,0x6f,0x23,0x93,0xe5,0x24}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc9,0x3e,0xe1,0xbf,0xef,0xc8,0x22,0x97,0xae,0x51}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc9,0x82,0xc3,0xcc,0x29,0x07,0x0b,0x8d,0x6f,0xfb}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc9,0xfe,0x7a,0x81,0x62,0x35,0x52,0xf7,0x02,0x0c}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xca,0x33,0x3a,0xdc,0x87,0x62,0x7a,0xc2,0x1d,0xe6}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xca,0x50,0x8d,0xe0,0x82,0x1c,0x59,0x0f,0xef,0x1b}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xca,0xa3,0x66,0x19,0x34,0xac,0xb2,0x0f,0x60,0x9a}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xcb,0xb3,0xa0,0x39,0xf6,0x46,0xec,0x5a,0x42,0xc6}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xcc,0xc6,0x22,0xb4,0xfc,0xf7,0xff,0xb0,0xa2,0xb4}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xcd,0x2e,0x71,0x78,0x7b,0x6d,0x9e,0x61,0x70,0x05}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xcd,0x31,0x38,0x94,0x95,0xca,0x44,0xf4,0x65,0x68}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xcd,0x61,0xe1,0xbe,0x7b,0x46,0x9c,0x51,0xbf,0x66}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xcd,0xac,0xcf,0x18,0x1f,0xa6,0x8f,0x02,0x6a,0x43}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xce,0x20,0x1e,0x2c,0x8d,0x2c,0x9e,0xd9,0xa7,0xac}, 8333}
};
static SeedSpec6 pnSeed6_test[] = {
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x99,0xcb,0x26,0x31,0xba,0x48,0x51,0x31,0x39,0x0d}, 18333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x44,0xf4,0xf4,0xf0,0xbf,0xf7,0x7e,0x6d,0xc4,0xe8}, 18333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x6a,0x8b,0xd2,0x78,0x3f,0x7a,0xf8,0x92,0x8f,0x80}, 18333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe6,0x4e,0xa4,0x47,0x4e,0x2a,0xfe,0xe8,0x95,0xcc}, 18333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x9f,0xae,0x9f,0x59,0x0b,0x3f,0x31,0x3a,0x8a,0x5f}, 18333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x47,0xb1,0xe4,0x55,0xd1,0xb0,0x14,0x3f,0xb6,0xdb}, 18333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xa0,0x60,0x9e,0x46,0x54,0xdb,0x61,0x3b,0xb2,0x6f}, 18333}
};
#endif