macOS: The ETA in f3write 10.0 is incorrect.

Since updating to f3 10.0, running f3write on a 16GB micro SD plugged into an SD card reader via a USB hub throws up a ridiculous ETA like the one below.

```
f3write /Volumes/Big\ Download
F3 write 10.0
Copyright (C) 2010 Digirati Internet LTDA.
This is free software; see the source for copying conditions.

Free space: 14.25 GB
Creating file 1.h2w ... 0.01% -- 52.31 KB/s -- 3 weeks 2 days 2:21:43
```

When I rolled back to f3 9.0, it showed this ETA instead.

```
f3write /Volumes/Big\ Download
F3 write 9.0
Copyright (C) 2010 Digirati Internet LTDA.
This is free software; see the source for copying conditions.

Removing old file 1.h2w ...
Free space: 14.25 GB
Creating file 1.h2w ... 0.02% -- 97.17 KB/s -- 45:52:11
```

Seems like a bug with the f3write ETA, at the very least. Has anyone else seen this?

Homebrew 5.1.14-189-gc6a08de
macOS Tahoe.5
MacBook Air Late 2020

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This post was translated from Japanese to English using Kagi Translate.