Merge #1085

1085: Minimal versions r=asomers a=asomers

Build test with -Zminimal-versions in CI.

Co-authored-by: Alan Somers <[email protected]>

Author: bors[bot]

.travis.yml

@@ -88,6 +88,14 @@ matrix:
     - env: TARGET=x86_64-unknown-linux-gnu
       rust: stable
 
+    # Test that we can build with the lowest version of all dependencies.
+    # "cargo test" doesn't work because some of our dev-dependencies, like
+    # rand, can't build with thier own minimal dependencies.
+    - rust: nightly
+      script:
+        - cargo update -Zminimal-versions
+        - cargo build
+
 before_install: set -e
 
 install:

Cargo.toml

@@ -18,7 +18,7 @@ exclude     = [
 [dependencies]
 libc = { git = "https://github.com/rust-lang/libc", features = [ "extra_traits" ] }
 bitflags = "1.0"
-cfg-if = "0.1.0"
+cfg-if = "0.1.2"
 void = "1.0.2"
 
 [target.'cfg(target_os = "dragonfly")'.build-dependencies]