Add Rust 1.42 compatibility

.travis.yml

@@ -1,6 +1,7 @@
 language: rust
 
 rust:
+    - "1.42.0"
     - "1.43.1"
     - "1.44.1"
     - "1.45.2"

CHANGELOG.md

@@ -15,9 +15,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-### Changed
-- The minimal required Rust version is 1.43.
-
 
 ## [0.14.0] - 2020-10-27
 

README.md

@@ -80,7 +80,7 @@ man =(curl -sSf "https://raw.githubusercontent.com/breard-r/acmed/master/man/en/
 
 ## Build from source
 
-In order to compile ACMEd, you will need the [Rust](https://www.rust-lang.org/) compiler and its package manager, Cargo. The minimal required Rust version is 1.43, although it is recommended to use the latest stable one.
+In order to compile ACMEd, you will need the [Rust](https://www.rust-lang.org/) compiler and its package manager, Cargo. The minimal required Rust version is 1.42, although it is recommended to use the latest stable one.
 
 ACMEd depends OpenSSL 1.1.0 or higher.
 

acmed/Cargo.toml

@@ -27,7 +27,7 @@ clap = "2.32"
 glob = "0.3"
 handlebars = "3.0"
 log = "0.4"
-nom = "6.0"
+nom = { version = "6.0", default-features = false, features = [] }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 toml = "0.5"