Local time error: IndeterminateOffset

[incker]

Trying to do
UtcOffset::current_local_offset().unwrap();

Cause panic

thread 'main' panicked at 'called Result::unwrap() on an Err value: IndeterminateOffset', src/main.rs:264:58

How can I fix it?

[jhpratt]

You're calling .unwrap() which is causing a panic. That's 100% on you.

Without other information, all I can do is guess as to why the Err value is being returned. Most likely you're on a Unix-based OS, which has soundness issues. The method is fallible for a reason.

[incker]

linux mint, if this helps
hour offset +02:00

[avl]

You probably need to enable the 'unsound_local_offset' feature. The reason is that it has (relatively recently) been discovered that obtaining the local time zone offset on linux cannot be done without creating a security risk.

More reading:
CVE-2020-26235
https://www.reddit.com/r/rust/comments/qamgyh/is_the_chrono_crate_unmaintained/

[jhpratt]

See #293. Obtaining the local offset on Linux is unsound and so the call returns an Err.

[emabee]

Interestingly, maybe, chrono::Local::now() in contrast works as expected.

[jhpratt]

Yes, but its call is unsound and could crash your program without notice.