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,0x43,0xe4,0x64,0x0b,0xeb,0x73,0x04,0x33,0x66,0x21,0x89}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe5,0x3a,0x9e,0x83,0x1e,0x88,0x24,0xeb,0x4f,0x8c}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe5,0x5d,0x1a,0xcd,0xd8,0x21,0x8f,0xcc,0x86,0xb1}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xee,0xa5,0xc4,0xf5,0xeb,0x1d,0x96,0xfc,0x9e,0x76}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe8,0x02,0xf4,0x22,0x05,0xa9,0x14,0xe2,0x26,0x2e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe8,0x30,0x3c,0xde,0xfe,0x4e,0x1d,0x9d,0xb4,0x99}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe8,0xaf,0x91,0xca,0x33,0x72,0xba,0x33,0x3b,0x80}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe9,0x07,0x44,0x29,0xf4,0x1a,0x09,0xb4,0xe2,0x25}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe9,0x1e,0x40,0x15,0x4c,0xc0,0x38,0x5a,0xf4,0x7d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe9,0x71,0x75,0xe6,0x68,0x16,0xe7,0xe6,0xba,0x79}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xe9,0xc7,0xe2,0x60,0x96,0xee,0x02,0xd8,0x78,0xc1}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xea,0x70,0x5c,0x9e,0xca,0x90,0x7d,0x48,0xc5,0xfa}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xeb,0x5c,0xe8,0x18,0x53,0xef,0xbe,0x83,0x77,0xf5}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xeb,0x64,0x56,0x71,0xb0,0x86,0x72,0xf8,0xa6,0x2f}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xeb,0xa1,0x29,0xde,0x4f,0xc9,0xd6,0x64,0x90,0xbe}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xeb,0xf3,0x96,0x0f,0x93,0x2b,0x9b,0x18,0x64,0x3a}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xec,0x84,0xa6,0x5f,0x98,0xa0,0x82,0xd7,0xf1,0x0e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xed,0x09,0xfb,0x3a,0x39,0x0b,0x7c,0x77,0x37,0x64}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xed,0xae,0x7b,0xea,0x6e,0xcb,0xdd,0x52,0xfb,0x3b}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xed,0xd5,0xbc,0x51,0xbb,0xf1,0x37,0xa2,0x6f,0x88}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xee,0x4c,0x79,0xe8,0xdf,0xa8,0xa4,0x07,0xa3,0xdd}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xf6,0x86,0x21,0xbe,0xa3,0x72,0xcb,0x95,0x0f,0x2b}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xf6,0xc2,0xa7,0x69,0x87,0x45,0xda,0xdd,0x07,0xe3}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xf7,0xce,0x9a,0x96,0xbe,0xb2,0x05,0x30,0x2d,0x9d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xf1,0xbc,0xa7,0x71,0x4b,0x51,0x7a,0x09,0xac,0x68}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xf2,0xbb,0x98,0x90,0x97,0xb7,0x04,0x01,0xdd,0x1d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xf2,0x8b,0xd0,0x60,0xeb,0x79,0x1b,0x8b,0x18,0x12}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xf3,0x00,0x83,0x5d,0x35,0x11,0x27,0xc7,0xa2,0x64}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xf4,0x49,0x29,0x57,0x83,0xab,0xd6,0x1e,0xa0,0xe7}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xf4,0x52,0x4b,0xf8,0xd8,0xa0,0x28,0x8d,0x8b,0xa4}, 8333},