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,0x43,0xf4,0x94,0x66,0x97,0x9b,0x7b,0xce,0x3a,0xa6,0x80}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xf4,0xa7,0x70,0x38,0x74,0xb2,0x24,0x6e,0xca,0x07}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xf5,0xe1,0x8e,0x4e,0x5e,0x0b,0xbd,0x4e,0x8c,0xcc}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xf8,0x2a,0xd5,0xec,0x70,0x79,0xa9,0xad,0xa6,0xa0}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xf9,0x4b,0xcb,0x2b,0x5e,0xf3,0x5d,0xad,0xce,0xed}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xf9,0xd0,0xf0,0xd3,0x25,0x18,0xb1,0x98,0x29,0x46}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xfc,0x92,0xc5,0xe6,0x33,0x3a,0x56,0xf2,0xe0,0x6a}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xfc,0xe9,0x3d,0xe6,0x7a,0x02,0xad,0x16,0x5b,0xd7}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xfd,0x0f,0x24,0xe5,0x3e,0x6d,0xf6,0x32,0xb6,0xf3}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xfd,0x99,0xcb,0x49,0xdb,0xb5,0x41,0x3b,0xb4,0x33}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xfe,0x14,0xcc,0xd3,0x01,0xb0,0xf4,0xf9,0xe4,0xdc}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x06,0xbe,0x1a,0x9d,0x0d,0x07,0x31,0xad,0xa6,0xee}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x07,0x77,0x59,0x8d,0x9f,0xa2,0x09,0x3e,0xd4,0x6b}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x07,0x7d,0xdf,0xea,0xe9,0xa3,0x8a,0xd9,0xe8,0x6f}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x00,0x5f,0xae,0xa9,0xa8,0x28,0xe4,0xd1,0x6a,0x35}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x01,0x0b,0x7f,0xd0,0x39,0x78,0x17,0xf1,0x2c,0x0a}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x02,0x3b,0x1d,0x0d,0x0e,0xcb,0x89,0xf8,0xc4,0x79}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x02,0x1f,0x47,0xbc,0xe8,0x9e,0xc8,0xd3,0x19,0xe9}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x02,0xcc,0xf4,0xa7,0x06,0x1e,0xcd,0x36,0xb1,0xef}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x02,0xd0,0x7a,0x03,0xf1,0x3e,0x05,0xce,0xe8,0xf1}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x03,0x36,0x6c,0x60,0xb8,0x6d,0xf3,0x6c,0x5c,0xf7}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x03,0x54,0xec,0xe4,0xa7,0x5e,0xa3,0xba,0x0b,0xd4}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x04,0xf7,0x3b,0x25,0x61,0x98,0xb4,0xb8,0x36,0x1d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x05,0x60,0xe0,0xaf,0xfa,0x7b,0x05,0xee,0x0f,0x08}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x05,0x98,0x3c,0xe8,0xb2,0xd8,0x7a,0x7e,0xd2,0x7d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x06,0x31,0x67,0xa3,0x1f,0xf8,0x69,0x31,0xa6,0x29}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x0e,0x91,0xb7,0xa7,0xe2,0xd7,0x05,0x57,0xc6,0x5f}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x0f,0x10,0xb2,0x07,0x17,0x15,0x3c,0xd9,0xcd,0x0e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x0f,0x2b,0x55,0x06,0x08,0x78,0x98,0xab,0x3f,0x95}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x08,0xc6,0x58,0x5d,0xf2,0xea,0x02,0x3d,0x96,0x76}, 8333},