CI: Remove all references to cargo-xbuild

Also, make sure that the debug build also works.

Signed-off-by: Joe Richey <[email protected]>

.travis.yml

@@ -14,15 +14,15 @@ install:
   - rustup component add clippy
   - rustup component add rustfmt
   - rustup component add rust-src
-  - cargo install cargo-xbuild
   - sudo apt-get install -y mtools
   - wget https://download.clearlinux.org/releases/28660/clear/clear-28660-kvm.img.xz
   - unxz clear-28660-kvm.img.xz
   - ./make-test-disks.sh
 
 script:
-  - cargo xbuild --release --target target.json
-  - cargo xclippy --target target.json
+  - cargo build --target target.json -Zbuild-std=core -Zbuild-std-features=compiler-builtins-mem
+  - cargo build --release --target target.json -Zbuild-std=core -Zbuild-std-features=compiler-builtins-mem
+  - cargo clippy --target target.json -Zbuild-std=core
   - cargo clippy --all-targets --all-features
   - cargo fmt --all -- --check
   - cargo test

README.md

@@ -24,7 +24,7 @@ all the way into the OS.
 
 To compile:
 
-cargo xbuild --release --target target.json
+cargo build --release --target target.json -Zbuild-std=core -Zbuild-std-features=compiler-builtins-mem
 
 The result will be in:
 

run_integration_tests.sh

@@ -3,11 +3,8 @@ set -xeuf
 
 source "${CARGO_HOME:-$HOME/.cargo}/env"
 
-XBUILD_VERSION="0.6.2"
-cargo install cargo-xbuild --version $XBUILD_VERSION
-
 rustup component add rust-src
-cargo xbuild --release --target target.json
+cargo build --release --target target.json -Zbuild-std=core -Zbuild-std-features=compiler-builtins-mem
 
 CH_VERSION="v0.8.0"
 CH_URL="https://github.com/cloud-hypervisor/cloud-hypervisor/releases/download/$CH_VERSION/cloud-hypervisor"