serde_json requires that either `std` (default) or `alloc` feature is enabled

[andygrove]

Describe the bug
I have recently been running into the error serde_json requires that either ``std`` (default) or ``alloc`` feature is enabled in CLion when working on DataFusion, or on projects that depend on DataFusion. This happens when attempting to run unit tests.

To Reproduce
I don't know if this is something specific to my environment or a more general issue.

Expected behavior
Should not get this error.

Additional context
None.

[jdye64]

I am also experiencing this issue. I'm using VSCode and trying to run an individual test. Running cargo test from the CLI also gives me the same error.

[andygrove]

I think the root cause may be that arrow-rs imports serde-json with no default features, which means no std feature. Not sure why we are only just now seeing these errors though.

[andygrove]

My workaround locally is to add serde_json = "1.0.82" to datafusion/common/Cargo.toml

[andygrove]

@alamb fyi

[alamb]

Weird... I don't see this but then I don't use CLion / VSCode (I use emacs and tend to run the tests via cargo run)

Do we know what cargo command CLion is running underneath (aka can we reproduce this error outside of those IDEs?)

[tustvold]

This was caused for a while by a particular version of serde_json, running cargo update or deleting the lockfile should make it go away