"unknown feature `proc_macro_span_shrink`" when trying to run demos

[mccartney]

I am new to the project. Just trying to follow the [contributing.md] instructions. bleep run demo@jvm213 fails with

📗 Launching Bleep version 0.0.1-M27 as requested in /private/tmp/tui-scala/bleep.yaml
📗 bootstrapped in 19 ms
📗 Running source generator `tui.scripts.GenJniLibrary` for project crossterm because output didn't exist
📕 BSP: Picked up _JAVA_OPTIONS: -Djava.awt.headless=true
📗 BSP / [script GenJniLibrary]: bootstrapped in 684 ms
📗 BSP / [script GenJniLibrary]: Building library with native build tool Cargo
📙 BSP / [script GenJniLibrary] / [subprocess: cargo build]:    Compiling proc-macro2 v1.0.47
📙 BSP / [script GenJniLibrary] / [subprocess: cargo build]:    Compiling signal-hook-mio v0.2.3
📙 BSP / [script GenJniLibrary] / [subprocess: cargo build]:    Compiling crossterm v0.25.0
📙 BSP / [script GenJniLibrary] / [subprocess: cargo build]: error[E0635]: unknown feature `proc_macro_span_shrink`
📙 BSP / [script GenJniLibrary] / [subprocess: cargo build]:   --> /Users/mccartney/.cargo/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.47/src/lib.rs:92:30
📙 BSP / [script GenJniLibrary] / [subprocess: cargo build]:    |
📙 BSP / [script GenJniLibrary] / [subprocess: cargo build]: 92 |     feature(proc_macro_span, proc_macro_span_shrink)
📙 BSP / [script GenJniLibrary] / [subprocess: cargo build]:    |                              ^^^^^^^^^^^^^^^^^^^^^^
📙 BSP / [script GenJniLibrary] / [subprocess: cargo build]: 
📙 BSP / [script GenJniLibrary] / [subprocess: cargo build]: For more information about this error, try `rustc --explain E0635`.
📙 BSP / [script GenJniLibrary] / [subprocess: cargo build]: error: could not compile `proc-macro2` (lib) due to 1 previous error
📙 BSP / [script GenJniLibrary] / [subprocess: cargo build]: warning: build failed, waiting for other jobs to finish...
📕 BSP / [script GenJniLibrary]: Failed to run script: `GenJniLibrary`.: Failed external command 'cargo build' with exit code 101. See log file for exact command
📕 command failed: Run scripts failed status code ERROR

I can see the same failure in CI, so I guess it's not specific to my local setup.

[mccartney]

Bumping https://github.com/oyvindberg/tui-scala/blob/master/crossterm/cargo/Cargo.lock#L166 to 1.0.70 seems to fix the issue.

[oyvindberg]

Interesting. I thought the rust code would be quite "frozen", but not quite apparently. Can you PR the change so we can see if passes CI as well?

[mccartney]

we can see if passes CI as well?

It seems like it does.