rust v1.42 needed

[knarrff]

I just tried to build current master on a Debian-stable machine, which has Rust 1.41 installed. According to the Readme, this should be sufficient. However, Cargo.lock specifies name = "rusqlite" version = "0.24.2" as dependency, which uses the 'matches' macro, which was only "stablized" with Rust 1.42, so with Rust 1.41 I see errors like:

Compiling rusqlite v0.24.2
error[E0658]: use of unstable library feature 'matches_macro'
--> /home/username/.cargo/registry/src/github.com-1ecc6299db9ec823/rusqlite-0.24.2/src/types/from_sql.rs:146:44
|
146 | i64::column_result(value).map(|i| !matches!(i, 0))
| ^^^^^^^
|
= note: for more information, see rust-lang/rust#65721