edition: migrate to Rust 2018

This was long overdue, but I had been busy with other things.

This also bumps the MSRV to Rust 1.41, which is what is currently in
Debian stable.

.github/workflows/ci.yml

@@ -31,7 +31,7 @@ jobs:
         include:
         - build: pinned
           os: ubuntu-18.04
-          rust: 1.28.0
+          rust: 1.41.1
         - build: stable
           os: ubuntu-18.04
           rust: stable

Cargo.toml

@@ -10,6 +10,10 @@ readme = "README.md"
 keywords = ["memchr", "char", "scan", "strchr", "string"]
 license = "Unlicense/MIT"
 exclude = ["/ci/*", "/.travis.yml", "/Makefile", "/appveyor.yml"]
+edition = "2018"
+
+[workspace]
+members = ["bench"]
 
 [lib]
 name = "memchr"
@@ -31,7 +35,10 @@ use_std = ["std"]
 libc = { version = "0.2.18", default-features = false, optional = true }
 
 [dev-dependencies]
-quickcheck = { version = "0.9", default-features = false }
+quickcheck = { version = "1.0.3", default-features = false }
+
+[profile.bench]
+debug = true
 
 [profile.test]
 opt-level = 3

README.md

@@ -67,7 +67,7 @@ on Linux. On Linux, `memrchr` is used in precisely the same scenario as
 
 ### Minimum Rust version policy
 
-This crate's minimum supported `rustc` version is `1.28.0`.
+This crate's minimum supported `rustc` version is `1.41.1`.
 
 The current policy is that the minimum Rust version required to use this crate
 can be increased in minor version updates. For example, if `crate 1.0` requires