This declares the minimum supported Rust version, independently of the
`rust-toolchain.toml` file, which specifies the Rust version and
toolchain components the crate/workspace should be built with. The
MSRV affects other crates that depend on anything in this workspace,
but the toolchain file does not seem to affect them. This means the
MSRV is useful for those who build or develop dependents.
Signed-off-by: Lars Wirzenius <liw@liw.fi>
Lars Wirzenius
cloudhead
Lorenz Leutgeb