add rust-toolchain, current nightly breaks compile so force stable.

[JustASpeedrunner]

Was having an issue compiling since I had cargo on nightly, this forces stable so those issues don't come up on other peoples' machines.

Output if built with nightly:

spotify-adblock $ make
# cargo build --profile release
cargo build --release
   Compiling proc-macro2 v1.0.55
   Compiling unicode-ident v1.0.8
   Compiling quote v1.0.26
   Compiling serde_derive v1.0.159
   Compiling serde v1.0.159
   Compiling memchr v2.5.0
   Compiling autocfg v1.1.0
   Compiling hashbrown v0.12.3
   Compiling regex-syntax v0.6.29
   Compiling winnow v0.4.1
   Compiling libc v0.2.140
   Compiling lazy_static v1.4.0
   Compiling indexmap v1.9.3
error[E0635]: unknown feature `proc_macro_span_shrink`
  --> /home/jas/.cargo/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.55/src/lib.rs:92:30
   |
92 |     feature(proc_macro_span, proc_macro_span_shrink)
   |                              ^^^^^^^^^^^^^^^^^^^^^^

For more information about this error, try `rustc --explain E0635`.
error: could not compile `proc-macro2` (lib) due to previous error
warning: build failed, waiting for other jobs to finish...
make: *** [Makefile:14: target/release/libspotifyadblock.so] Error 101

[abba23]

I just updated the dependencies in Cargo.lock (proc-macro2 in particular), which should make it possible to build the project with nightly Rust again.

[JustASpeedrunner]

Yep it works now, I would add the toolchain just for stability's sake but it's up to you. Regardless I appreciate the fix.

[abba23]

it works now

Great! Thank you for pointing out the problem.

I would add the toolchain just for stability's sake but it's up to you.

I think some potential instability should be expected when using nightly. But since there's no fundamental incompatibility here, I don't believe the restriction is necessary in this case.