Comments (2)
Thanks for trying Rerast and sorry it's giving such an unhelpful error message. When you say "occasionally" - does it succeed if you rerun the same command on the same source, or is it consistent until you've edited the source? When it happens, can you confirm that "cargo check" succeeds?
I'm assuming the project is one that you can't share? If that's the case, I might need to do an overhaul of the error reporting to try to get the message to be more helpful. Although I should probably do that anyway. I can't find 'Unexpected character' in either the rerast source, nor the rustc source, so I'm not sure where it's coming from.
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Woohoo, I just reproduced this and then was able to figure out what was happening. Rerast calls "cargo check" in order to get the rustc command lines needed in order to build the local targets, when doing this, rerast acts as a wrapper around the compiler and prints out the command line as a JSON string which is then picked up and read by the parent rerast process. However if there are multiple build targets - e.g. if there are integration tests - cargo will run the "compiler" (rerast) multiple times in parallel. The outputs were getting interleaved resulting in corrupted JSON. The fix is simple - add -j 0 to the cargo check command line in order to not run things in parallel. I'll also improve the error reporting if/when we do get JSON parse errors. Fix should be in the next release. Sorry for the delay and thanks again for the report.
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Related Issues (20)
- Build errors on installation HOT 2
- Rewrite discards expression for variable HOT 2
- build failure with rustc 1.32.0-nightly (f4a421ee3 2018-12-13) HOT 1
- Documentation examples of the replace_type and replace_trait_ref. HOT 1
- replace_type macro fails on rust edition 2018. HOT 1
- Build fails on 1.35-nightly HOT 2
- dot async example HOT 2
- Rerast requires `rustup` HOT 4
- try! example panics when fixing docs.rs HOT 5
- How can I use a type from the crate I'm fixing? HOT 7
- Better error messages HOT 1
- Allow running when not in root directory HOT 2
- Build failure with latest nightly: ExprKind::AddrOf variant changed HOT 5
- Example of modifying a function definition? HOT 1
- Specifying type () in placeholders generates bad syntax HOT 2
- Replacing try macro in 2018 edition HOT 3
- Running cargo rerast in workspaces fails HOT 5
- can't compile on latest nightly HOT 2
- Matching of string literals HOT 2
- Transform attribute values
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