cargo check fails, cargo build fails, cargo build --release works

[uggwar]

Problem

cargo check on a project using serde fails the final linking, with a rather huge amount of undefine references. The same goes for debug build, but release works as expected.

Steps

1. cargo build
2. Output with error messages attached

Possible Solution(s)

Build with --release creates a working binary, but is slow and doesn't work as well with 'cargo watch -c' (my workflow...)

cargo +nightly check
cargo 1.37.0-nightly (545f354 2019-05-23)

Notes

cargo 1.35.0 (6f3e9c3 2019-04-04)
rustc 1.35.0 (3c235d560 2019-05-20)
stable-x86_64-unknown-linux-gnu (default)
Debian GNU/Linux 10 testing amd64

cargo_check_serde_output.txt

[ehuss]

Can you post a project or Cargo.toml that reproduces the problem?

[uggwar]

lompe.tar.gz

[ehuss]

Hm, I can't seem to find a way to reproduce it. Have you tried running cargo clean?

[uggwar]

Yes, sure. Same error in the project I posted earlier.

[ehuss]

Sorry, I'm not able to reproduce your issue, and I don't really see any clues which could explain it. You might get more help on one of the forums like URLO.

[ehuss]

Oh, another thing you might try is disabling incremental compilation to see if that is the culprit. Set the environment variable CARGO_INCREMENTAL=0. There are a number of people reporting similar issues with undefined symbols related to incremental.

[uggwar]

CARGO_INCREMENTAL=0 builds correctly! Thanks!

[Eh2406]

Move to close?

[ehuss]

Yep, hopefully the compiler team can wrangle it. People may follow rust-lang/rust#59535 for updates.