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,0x43,0x7c,0xec,0xf0,0xdb,0x09,0xea,0xdb,0x82,0x5b,0x45}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x7d,0x3f,0x6d,0xa4,0xb8,0x8e,0x5f,0xf9,0x5e,0x48}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x7d,0xb0,0xb0,0xe2,0xa5,0xa0,0xbd,0xa3,0x9e,0xb7}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x86,0x8a,0x76,0xb7,0x13,0xe8,0x74,0x0c,0x54,0x44}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x86,0xd1,0xb0,0x3e,0x88,0x73,0x42,0x0c,0xb0,0xa4}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x80,0xfc,0x51,0x3e,0x9b,0x7d,0x42,0x5d,0x63,0x77}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x81,0x49,0x6a,0xef,0x1f,0x06,0xdf,0xc4,0x6c,0x23}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x81,0xf1,0x31,0xce,0x65,0x59,0xc2,0x2e,0x46,0x47}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x82,0x9b,0xbe,0xc4,0x3b,0xbe,0x8d,0x70,0xda,0x1c}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x82,0xea,0xb2,0x5e,0x5f,0x7d,0x80,0x2d,0x17,0x81}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x83,0x8c,0x28,0x22,0x33,0xa4,0xc1,0xe8,0xae,0xe6}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x84,0x73,0x02,0xdd,0x47,0x8b,0x29,0xda,0xf6,0x2e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x84,0xb0,0x90,0x4a,0x1c,0xf0,0x75,0x2c,0x23,0x12}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x85,0x29,0xc0,0xeb,0x29,0x0b,0x63,0xaa,0x13,0x98}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x85,0x30,0x22,0xa7,0x56,0x23,0x73,0xe0,0x97,0x03}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x85,0x47,0x8d,0x89,0x8e,0x13,0x57,0x5e,0xd7,0xe2}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x85,0x6c,0x77,0xc3,0x06,0x03,0x75,0x75,0x63,0xa7}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x86,0x29,0x3b,0x0b,0x5e,0xa2,0xd7,0x44,0x80,0xa1}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x8f,0x3b,0x03,0x68,0x7e,0x45,0x8a,0x33,0xc2,0xcb}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x8f,0x2f,0x41,0xc7,0xd4,0xe4,0x7a,0xdc,0x18,0x1c}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x8f,0x80,0xf0,0x76,0x52,0xa2,0x6e,0x1b,0x0f,0x7c}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x8f,0xb3,0xa3,0x0a,0x54,0xdf,0xd5,0xb3,0x00,0x07}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x88,0x62,0x93,0x14,0x42,0x07,0xab,0xd0,0xff,0x0e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x88,0x90,0x5b,0xa0,0x20,0xb4,0x27,0xe8,0xdf,0x39}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x88,0xdd,0xbb,0x8a,0x6a,0xde,0x55,0x94,0xd5,0x6d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x88,0xea,0xb2,0x3f,0x1e,0x31,0xcc,0xf0,0x3f,0x2e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x89,0x05,0x2d,0x83,0x5f,0x11,0xeb,0xa5,0x9b,0xdd}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x89,0x58,0x14,0x63,0xb5,0xcc,0xea,0xdf,0x1f,0x0d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x8a,0xd1,0xd5,0x85,0x24,0xe2,0xbf,0xf4,0x37,0x36}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x8b,0xa1,0x66,0xb0,0x8f,0x12,0x79,0xdd,0xd4,0xa7}, 8333},