`c-scape` fails to compile on nightly

[LGFae]

The VaList struct has changed on Rust nightly, causing printf-compat 0.2.1 to fail to compile:

cargo c                                                                                                                        17:02:39
    Checking printf-compat v0.2.1
    Checking origin v0.26.2
error[E0107]: struct takes 1 lifetime argument but 2 lifetime arguments were supplied
   --> /home/horus/.local/share/cargo/registry/src/index.crates.io-1949cf8c6b5b557f/printf-compat-0.2.1/src/output.rs:338:14
    |
338 |     va_list: VaList<'a, 'b>,
    |              ^^^^^^   ---- help: remove the lifetime argument
    |              |
    |              expected 1 lifetime argument
    |
note: struct defined here, with 1 lifetime parameter: `'a`
   --> /home/horus/.local/share/rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ffi/va_list.rs:170:12
    |
170 | pub struct VaList<'a> {
    |            ^^^^^^ --

error[E0107]: struct takes 1 lifetime argument but 2 lifetime arguments were supplied
   --> /home/horus/.local/share/cargo/registry/src/index.crates.io-1949cf8c6b5b557f/printf-compat-0.2.1/src/output.rs:311:14
    |
311 |     va_list: VaList<'a, 'b>,
    |              ^^^^^^   ---- help: remove the lifetime argument
    |              |
    |              expected 1 lifetime argument
    |
note: struct defined here, with 1 lifetime parameter: `'a`
   --> /home/horus/.local/share/rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ffi/va_list.rs:170:12
    |
170 | pub struct VaList<'a> {
    |            ^^^^^^ --

error[E0581]: return type references lifetime `'b`, which is not constrained by the fn input types
   --> /home/horus/.local/share/cargo/registry/src/index.crates.io-1949cf8c6b5b557f/printf-compat-0.2.1/src/output.rs:312:6
    |
312 | ) -> VaListDisplay<'a, 'b> {
    |      ^^^^^^^^^^^^^^^^^^^^^

Some errors have detailed explanations: E0107, E0581.
For more information about an error, try `rustc --explain E0107`.
error: could not compile `printf-compat` (lib) due to 3 previous errors
warning: build failed, waiting for other jobs to finish...

From the printf-compat Changelog, it seems their latest release addresses this, so the fix could be as simple as bumping the printf-compat version.