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,0x43,0x98,0x2b,0xfa,0x4d,0xf6,0xe3,0xcb,0x8f,0xa7,0xca}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x98,0x2e,0x6e,0xe7,0x52,0xb9,0x59,0xd1,0x70,0x7e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x99,0x15,0x6a,0xb4,0x2e,0x18,0x73,0x15,0xd0,0xb2}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x99,0xb9,0x4b,0x45,0x2c,0x9c,0x74,0x95,0x85,0x38}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x99,0xf8,0x24,0xd4,0xa5,0x4c,0xed,0xea,0xb9,0x94}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x99,0xfc,0x5b,0xe1,0x93,0xb3,0x4a,0x82,0xc0,0x94}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x99,0xe6,0x23,0x9d,0x7a,0xed,0x35,0xe6,0x99,0x70}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x9a,0x10,0x03,0xfc,0x52,0xa3,0x94,0xb1,0x55,0x1e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x9a,0xbd,0xbb,0xf4,0xaa,0xde,0xf7,0xfc,0xee,0x83}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x9a,0x8c,0xe7,0x4c,0x13,0xf0,0xa0,0xdf,0xd7,0x18}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x9b,0x53,0xdf,0x76,0xd6,0x86,0x7b,0x67,0xa6,0xb2}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x9c,0xbd,0x0b,0xef,0xec,0x63,0xe9,0xe6,0xa7,0xb8}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x9c,0xd2,0x89,0x56,0xf8,0x19,0x83,0x37,0xf7,0xc5}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x9d,0x9b,0xde,0x57,0xf1,0x06,0xae,0x93,0x0f,0xbd}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x9d,0xc8,0xce,0xb0,0x94,0x36,0xb8,0x6d,0x13,0x23}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x9e,0x11,0x46,0xb7,0x7e,0x5b,0x0a,0x28,0x75,0x71}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x9e,0x2b,0xdf,0x5e,0x5e,0x37,0x9a,0x3c,0xc2,0x97}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xa7,0x3e,0x5d,0x9e,0xf6,0x87,0xbb,0x23,0x4b,0x8e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xa7,0x23,0xf2,0xb4,0xee,0x5c,0x47,0x6b,0x2d,0xa8}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xa7,0x7b,0xe7,0x14,0x3b,0x66,0x01,0x10,0x16,0xcd}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xa7,0x61,0xb3,0x07,0x3c,0x83,0xf3,0xcb,0x55,0x71}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xa0,0x14,0xbc,0x6f,0x03,0x89,0x2b,0x57,0xde,0xc8}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xa1,0xbc,0x70,0x3d,0x1c,0x84,0xc8,0xac,0x8b,0xf5}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xa2,0x3b,0xdd,0xc1,0xd3,0x1f,0xa2,0xe6,0xee,0x25}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xa2,0x23,0xf2,0xee,0xcb,0x9b,0x94,0x0f,0x04,0x21}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xa2,0xa2,0x94,0x9e,0xce,0x1a,0xf9,0xcb,0x31,0xc5}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xa2,0xfa,0x66,0x69,0x17,0xc7,0xd5,0x01,0x96,0xc6}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xa3,0x46,0x3f,0xc6,0x49,0xe3,0xc8,0xdd,0xd9,0xdc}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xa3,0xa3,0x67,0xe4,0xa4,0x3c,0xf0,0xa8,0x9b,0x9b}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xa3,0xab,0x27,0xeb,0x0b,0x9b,0x40,0xe4,0xc3,0xcb}, 8333},