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,0x43,0xd5,0xc7,0x99,0x46,0x87,0x91,0x13,0xc9,0xc9,0x16}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xdf,0x22,0x06,0xea,0xce,0x87,0x08,0x09,0x32,0x52}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xdf,0xa1,0xf5,0x1c,0xe4,0x4e,0x97,0x71,0xee,0xc5}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xdf,0xf7,0x64,0x8e,0x4f,0xa3,0xbb,0xaa,0x4f,0x30}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xdf,0xfc,0xa5,0x92,0x7d,0xbc,0x03,0x13,0x69,0x35}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xdf,0xd5,0x61,0xfc,0xb7,0x73,0xff,0xef,0x2f,0xaa}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xd9,0x3b,0x3f,0x9e,0x1c,0x02,0xe7,0xd9,0xba,0xb7}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xd9,0x83,0x73,0x90,0x25,0x3b,0xa9,0x4b,0x18,0x5b}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xd9,0xcc,0x14,0xe4,0x9a,0x68,0x6d,0x8a,0x12,0xc5}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xda,0x29,0x4a,0xc4,0x7a,0xb0,0x0e,0x0d,0x0a,0xee}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xda,0x67,0x7a,0x24,0x60,0x45,0x8f,0xe4,0x2e,0x74}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xda,0xfa,0x48,0x68,0x74,0xfb,0x2b,0x21,0x27,0x80}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xdb,0x5c,0x56,0x99,0xb0,0x5c,0x08,0x43,0xb7,0xee}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xdc,0x79,0xc1,0x8f,0x29,0x44,0xf2,0xdc,0x00,0xf6}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xdd,0x66,0x1a,0x59,0x93,0x73,0x7f,0x58,0x76,0x19}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe7,0x9c,0x7c,0xce,0x79,0xe3,0xc8,0xa4,0x73,0x66}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe7,0xca,0xbd,0xa2,0xab,0xe5,0x7b,0xe4,0xca,0x71}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe7,0xd1,0xe8,0x45,0x7a,0x42,0x60,0x2b,0x2c,0xde}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe7,0xe9,0x47,0x9b,0x22,0x6c,0x6c,0x03,0xba,0x6e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe0,0xba,0x25,0x23,0x7f,0x25,0x5c,0x51,0xcb,0xc3}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe1,0x21,0xbf,0x26,0x37,0xfd,0xe9,0x89,0x95,0xe2}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe1,0x2c,0xa1,0xde,0xa2,0x37,0x7e,0x01,0xc5,0xa8}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe1,0x57,0x53,0x20,0x2d,0x66,0x9a,0xb1,0xed,0xa0}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe2,0x00,0xe6,0xcf,0x0c,0xe7,0xd0,0xc0,0x58,0x9c}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe2,0x6f,0x9d,0xfd,0xce,0xa7,0x40,0x6f,0xfb,0x62}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe3,0x1a,0xaa,0xa7,0xc7,0x07,0xf6,0x48,0x34,0x2a}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe3,0x5b,0x4c,0x5d,0x9d,0x57,0x66,0xbc,0x26,0x1b}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe3,0x73,0xac,0x1b,0x82,0x6b,0xa6,0x4d,0x91,0x3f}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe3,0xdd,0x9b,0x1f,0xdd,0xf7,0x30,0x6c,0x8c,0x6a}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe4,0x0c,0x50,0xf7,0xd1,0xab,0xc2,0xc2,0x4a,0xff}, 8333},