Chapter 9.2 - missing Ferris the Crab to show non-compile

[karipov]

Chapter 9.2 on Recoverable Errors contains two code blocks that do not compile; however, Ferris the Crab is absent from them, and doesn't highlight the blocks in red.

• Example 1, Example 2

Simply marking the blocks with additional does_not_compile should suffice.

Also, some parts contain code that is later shown to panic, but only under a condition. Should those also be specified with the panics tag alongside?

CC: @u32i64 (committed extensively regarding Ferris)

[awaitlink]

Also, some parts contain code that is later shown to panic, but only under a condition. Should those also be specified with the panics tag alongside?

I don't think so.

The panics tag is (in my opinion) intended for examples when the code always panics and the fact that it panics is incorrect (e.g. ch03-02#invalid-array-element-access).

The parts you are referring to are, on the other hand, possibly correct (depending on your specific case it might be more idiomatic to use Result and friends, but that is the topic of ch09-03-to-panic-or-not-to-panic), e.g. they panic only when the file in question is not found.

[L0uisc]

The parts you are referring to are, on the other hand, possibly correct (depending on your specific case it might be more idiomatic to use Result and friends, but that is the topic of ch09-03-to-panic-or-not-to-panic), e.g. they panic only when the file in question is not found.

See also #1903 in this regard