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,0x43,0x2a,0x8c,0xfd,0xc2,0xc4,0x30,0x05,0x11,0xe8,0x29}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x2b,0xb7,0x31,0x96,0xd7,0xd7,0xe6,0x05,0x42,0x1d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x2c,0x15,0x79,0x88,0xf6,0xc3,0xd1,0x27,0xa9,0xf5}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x2c,0x28,0xda,0x1d,0x76,0xa8,0xff,0x18,0x78,0x7d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x2c,0x6d,0x3e,0xb2,0x42,0x7e,0x0e,0x8a,0x59,0xe4}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x2c,0xc1,0xc3,0x15,0x28,0xa5,0x7c,0x5d,0x2c,0x9a}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x2d,0x1d,0x8d,0x21,0xf4,0x84,0x61,0x62,0x74,0x45}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x2e,0x7c,0xd9,0x21,0x3e,0x4a,0x31,0x4b,0x2e,0x42}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x36,0xea,0xb6,0x80,0x00,0x71,0xbb,0x23,0x51,0x1d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x37,0x38,0x8f,0x26,0xd2,0xa4,0xd5,0x66,0x49,0xf9}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x37,0x7b,0x3f,0x74,0x7d,0x12,0x92,0x8b,0x89,0xb6}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x30,0x12,0x3f,0x13,0x11,0x5e,0xa1,0x65,0x15,0x86}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x30,0x57,0x42,0x6c,0xf1,0xee,0xdf,0xc3,0x46,0xff}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x30,0x5f,0x17,0x76,0x79,0x1d,0x11,0x42,0x97,0x95}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x30,0xb8,0xbd,0xce,0x0b,0xde,0xa0,0x72,0x99,0x88}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x30,0x9a,0xb7,0x46,0xb3,0x7e,0x05,0x40,0x24,0x5e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x30,0xe4,0x80,0xe9,0xaa,0xd1,0x08,0xe4,0x0c,0xc2}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x31,0x3a,0x66,0x7c,0x5e,0xb7,0xf0,0x03,0xbf,0x3f}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x31,0x0c,0x29,0x90,0x84,0x7f,0x05,0x62,0xcd,0x7d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x31,0x5d,0x88,0x82,0x83,0x35,0x7b,0x04,0x8d,0x54}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x31,0x9e,0x1a,0x61,0xec,0xb9,0x91,0xaf,0x2c,0x5e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x31,0xe0,0x8a,0xe0,0x9f,0x11,0x44,0xa4,0x49,0xb3}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x32,0x22,0x05,0x5d,0xcc,0x69,0x3a,0x50,0xe3,0xdc}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x32,0xf3,0xd3,0x15,0x5b,0xdc,0xe9,0x43,0x75,0xa4}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x33,0xd6,0x09,0xdd,0xd8,0x37,0x5b,0x75,0xf6,0x29}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x34,0x50,0xf5,0xf6,0xe9,0xb6,0x34,0x31,0x47,0xc2}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x34,0xce,0x7c,0xad,0x90,0x12,0x35,0xa6,0xde,0x34}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x34,0xdd,0xa1,0xfb,0x92,0xb3,0xa4,0x56,0x2b,0xc2}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x35,0x00,0x24,0x34,0x98,0xee,0x98,0x61,0x05,0xfa}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x35,0x95,0x33,0x45,0x93,0xb2,0xbc,0xda,0xf6,0x42}, 8333},