cargo-bisect-rustc
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rust-lang
Bisects rustc, either nightlies or CI artifacts
This was my first time using cargo-bisect-rustc and I immediately jumped to `--script` because I was looking for a codegen regression and needed to inspect the generated asm. I'm ashamed...
From a conversation that began in https://github.com/rust-lang/cargo-bisect-rustc/pull/53#issuecomment-590008841 It would be helpful to support stack overflow errors as the regression definition. This can be hard coded with the current `--regress=` definition...
Some more complicated situations do not allow one to find an example that cleanly succeeds/fails depending on rustc version. Especially when hacking on rustc is eg find an example that...
Currently, if their are no ci builds, a report isn't printed as here an error is returned https://github.com/rust-lang/cargo-bisect-rustc/blob/37e4366023669df1c9e68d0cf74cce1fa577c42a/src/main.rs#L1146-L1152 so this function exits early https://github.com/rust-lang/cargo-bisect-rustc/blob/37e4366023669df1c9e68d0cf74cce1fa577c42a/src/main.rs#L615-L619 It would be nice to show...
While troubleshooting rust-lang/rust#81221 I ran into a panic in `cargo-bisect-rust` where it encountered a `UnexpectedVersionFormat` error while installing `nightly-2020-10-23`. ```console $ cargo bisect-rustc --preserve --start 2020-07-27 --verbose -- build installing...
If `cargo-bisect-rustc` is run with `--preserve` and without `--with-src`, and then at a later point is run with `--with-src`, it does not install the `rust-src` component for any versions which...
Infrastructure for testing the command line tool. Note: generates tests into fresh temp dir, which is deleted after testing is done (regardless of success or failure). You can change the...
``` $ cargo-bisect-rustc --end=2020-05-09 installing nightly-2020-05-09 RESULT: nightly-2020-05-09, ===> Yes uninstalling nightly-2020-05-09 installing nightly-2020-05-07 RESULT: nightly-2020-05-07, ===> Yes uninstalling nightly-2020-05-07 installing nightly-2020-05-05 RESULT: nightly-2020-05-05, ===> Yes uninstalling nightly-2020-05-05 installing nightly-2020-05-03...
I think this would make bisecting faster. The only downside I see is that it would be more difficult to have progress bars for each of the components. Perhaps we...
`cargo-bisect-rustc` is unable to find the commit range for a nightly toolchain, if the [git commit hash file](https://static.rust-lang.org/dist/2020-09-02/channel-rust-nightly-git-commit-hash.txt) of the previous nightly returns 404. If `cargo-bisect-rustc` is trying to find...
