Merge pull request #149 from eminence/msrv

Update docs and CI for MSRV

.github/workflows/rust.yml

@@ -26,6 +26,7 @@ jobs:
         cargo +${{ matrix.toolchain }} update --manifest-path procfs-tests/Cargo.toml
         cargo +${{ matrix.toolchain }} update -p hex --precise 0.4.2
         cargo +${{ matrix.toolchain }} update -p bitflags --precise 1.2.1
+        cargo +${{ matrix.toolchain }} update -p flate2 --precise 1.0.21
         cargo +${{ matrix.toolchain }} update --manifest-path procfs-tests/Cargo.toml -p bitflags --precise 1.2.1
 
     - name: Build

README.md

@@ -72,11 +72,12 @@ The following cargo features are available:
 ## Minimum Rust Version
 
 This crate requires a minimum rust version of 1.34.0 (2019-04-11), though if you use the optional `backtrace` feature,
-rust 1.42.0 is required (2020-03-12).  However, two dependencies of this crate (`hex` and `bitflags`) require a newer
+rust 1.42.0 is required (2020-03-12).  However, three dependencies of this crate (`hex`, `bitflags`, and `flate2`) require a newer
 version of rust, and must be manually pinned to an older version in order to use rust 1.34.  You can do this by running:
 
     cargo update -p hex --precise 0.4.2
     cargo update -p bitflags --precise 1.2.1
+    cargo update -p flate2 --precise 1.0.21
 
 ## License