Disable MIPS in CI. (#793)

* Disable MIPS in CI.

Enable check-only testing.

* Unpin nightly.

* Disable MIPS check tests too.

* Mention `rusl` as another similar crate.

* Fix a test on illumos.

Author: sunfishcode

.github/workflows/main.yml

@@ -32,7 +32,7 @@ jobs:
             rust: stable
           - build: nightly
             os: ubuntu-latest
-            rust: nightly-2023-07-03
+            rust: nightly
           - build: 1.48
             os: ubuntu-latest
             rust: 1.48
@@ -66,8 +66,6 @@ jobs:
         aarch64-unknown-linux-gnu
         aarch64-unknown-linux-musl
         powerpc64le-unknown-linux-gnu
-        mipsel-unknown-linux-gnu
-        mips64el-unknown-linux-gnuabi64
         armv5te-unknown-linux-gnueabi
         s390x-unknown-linux-gnu
         arm-linux-androideabi
@@ -126,8 +124,6 @@ jobs:
     - run: cargo check --workspace --release -vv --target=aarch64-unknown-linux-musl --features=all-apis --all-targets
     - run: cargo check --workspace --release -vv --target=aarch64-unknown-linux-musl --features=use-libc,all-apis --all-targets
     - run: cargo check --workspace --release -vv --target=powerpc64le-unknown-linux-gnu --features=all-apis --all-targets
-    - run: cargo check --workspace --release -vv --target=mipsel-unknown-linux-gnu --features=all-apis --all-targets
-    - run: cargo check --workspace --release -vv --target=mips64el-unknown-linux-gnuabi64 --features=all-apis --all-targets
     - run: cargo check --workspace --release -vv --target=armv5te-unknown-linux-gnueabi --features=all-apis --all-targets
     - run: cargo check --workspace --release -vv --target=s390x-unknown-linux-gnu --features=all-apis --all-targets
     - run: cargo check --workspace --release -vv --target=arm-linux-androideabi --features=all-apis --all-targets
@@ -149,7 +145,7 @@ jobs:
         include:
           - build: nightly
             os: ubuntu-latest
-            rust: nightly-2023-07-03
+            rust: nightly
 
     env:
       # -D warnings is commented out in our install-rust action; re-add it here.
@@ -173,7 +169,7 @@ jobs:
         include:
           - build: nightly
             os: ubuntu-latest
-            rust: nightly-2023-07-03
+            rust: nightly
 
     steps:
     - uses: actions/checkout@v3
@@ -200,7 +196,7 @@ jobs:
         include:
           - build: nightly
             os: ubuntu-latest
-            rust: nightly-2023-07-03
+            rust: nightly
 
     steps:
     - uses: actions/checkout@v3
@@ -232,24 +228,24 @@ jobs:
       QEMU_BUILD_VERSION: 7.0.0
     strategy:
       matrix:
-        build: [ubuntu, ubuntu-20.04, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, s390x-linux, arm-linux, ubuntu-stable, ubuntu-1.48, i686-linux-stable, aarch64-linux-stable, riscv64-linux-stable, s390x-linux-stable, mipsel-linux-stable, mips64el-linux-stable, powerpc64le-linux-stable, arm-linux-stable, ubuntu-1.48, i686-linux-1.48, aarch64-linux-1.48, riscv64-linux-1.48, s390x-linux-1.48, mipsel-linux-1.48, mips64el-linux-1.48, powerpc64le-linux-1.48, arm-linux-1.48, macos-latest, macos-11, windows, windows-2019]
+        build: [ubuntu, ubuntu-20.04, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, s390x-linux, arm-linux, ubuntu-stable, ubuntu-1.48, i686-linux-stable, aarch64-linux-stable, riscv64-linux-stable, s390x-linux-stable, powerpc64le-linux-stable, arm-linux-stable, ubuntu-1.48, i686-linux-1.48, aarch64-linux-1.48, riscv64-linux-1.48, s390x-linux-1.48, powerpc64le-linux-1.48, arm-linux-1.48, macos-latest, macos-11, windows, windows-2019]
         include:
           - build: ubuntu
             os: ubuntu-20.04 # TODO: remove pin when fixed (#483)
-            rust: nightly-2023-07-03
+            rust: nightly
           - build: ubuntu-20.04
             os: ubuntu-20.04
-            rust: nightly-2023-07-03
+            rust: nightly
           - build: i686-linux
             os: ubuntu-20.04 # TODO: remove pin when fixed (#483)
-            rust: nightly-2023-07-03
+            rust: nightly
             target: i686-unknown-linux-gnu
             gcc_package: gcc-i686-linux-gnu
             gcc: i686-linux-gnu-gcc
             libc_package: libc-dev-i386-cross
           - build: aarch64-linux
             os: ubuntu-20.04 # TODO: remove pin when fixed (#483)
-            rust: nightly-2023-07-03
+            rust: nightly
             target: aarch64-unknown-linux-gnu
             gcc_package: gcc-aarch64-linux-gnu
             gcc: aarch64-linux-gnu-gcc
@@ -258,34 +254,16 @@ jobs:
             qemu_target: aarch64-linux-user
           - build: powerpc64le-linux
             os: ubuntu-20.04 # TODO: remove pin when fixed (#483)
-            rust: nightly-2023-07-03
+            rust: nightly
             target: powerpc64le-unknown-linux-gnu
             gcc_package: gcc-powerpc64le-linux-gnu
             gcc: powerpc64le-linux-gnu-gcc
             qemu: qemu-ppc64le
             qemu_args: -L /usr/powerpc64le-linux-gnu
             qemu_target: ppc64le-linux-user
-          - build: mips64el-linux
-            os: ubuntu-20.04 # TODO: remove pin when fixed (#483)
-            rust: nightly-2023-07-03
-            target: mips64el-unknown-linux-gnuabi64
-            gcc_package: gcc-mips64el-linux-gnuabi64
-            gcc: mips64el-linux-gnuabi64-gcc
-            qemu: qemu-mips64el
-            qemu_args: -L /usr/mips64el-linux-gnuabi64
-            qemu_target: mips64el-linux-user
-          - build: mipsel-linux
-            os: ubuntu-20.04 # TODO: remove pin when fixed (#483)
-            rust: nightly-2023-07-03
-            target: mipsel-unknown-linux-gnu
-            gcc_package: gcc-mipsel-linux-gnu
-            gcc: mipsel-linux-gnu-gcc
-            qemu: qemu-mipsel
-            qemu_args: -L /usr/mipsel-linux-gnu
-            qemu_target: mipsel-linux-user
           - build: riscv64-linux
             os: ubuntu-20.04 # TODO: remove pin when fixed (#483)
-            rust: nightly-2023-07-03
+            rust: nightly
             target: riscv64gc-unknown-linux-gnu
             gcc_package: gcc-riscv64-linux-gnu
             gcc: riscv64-linux-gnu-gcc
@@ -294,7 +272,7 @@ jobs:
             qemu_target: riscv64-linux-user
           - build: s390x-linux
             os: ubuntu-20.04 # TODO: remove pin when fixed (#483)
-            rust: nightly-2023-07-03
+            rust: nightly
             target: s390x-unknown-linux-gnu
             gcc_package: gcc-s390x-linux-gnu
             gcc: s390x-linux-gnu-gcc
@@ -303,7 +281,7 @@ jobs:
             qemu_target: s390x-linux-user
           - build: arm-linux
             os: ubuntu-20.04 # TODO: remove pin when fixed (#483)
-            rust: nightly-2023-07-03
+            rust: nightly
             target: armv5te-unknown-linux-gnueabi
             gcc_package: gcc-arm-linux-gnueabi
             gcc: arm-linux-gnueabi-gcc
@@ -356,24 +334,6 @@ jobs:
             qemu: qemu-ppc64le
             qemu_args: -L /usr/powerpc64le-linux-gnu
             qemu_target: ppc64le-linux-user
-          - build: mips64el-linux-stable
-            os: ubuntu-20.04 # TODO: remove pin when fixed (#483)
-            rust: stable
-            target: mips64el-unknown-linux-gnuabi64
-            gcc_package: gcc-mips64el-linux-gnuabi64
-            gcc: mips64el-linux-gnuabi64-gcc
-            qemu: qemu-mips64el
-            qemu_args: -L /usr/mips64el-linux-gnuabi64
-            qemu_target: mips64el-linux-user
-          - build: mipsel-linux-stable
-            os: ubuntu-20.04 # TODO: remove pin when fixed (#483)
-            rust: stable
-            target: mipsel-unknown-linux-gnu
-            gcc_package: gcc-mipsel-linux-gnu
-            gcc: mipsel-linux-gnu-gcc
-            qemu: qemu-mipsel
-            qemu_args: -L /usr/mipsel-linux-gnu
-            qemu_target: mipsel-linux-user
           - build: arm-linux-stable
             os: ubuntu-20.04 # TODO: remove pin when fixed (#483)
             rust: stable
@@ -429,24 +389,6 @@ jobs:
             qemu: qemu-ppc64le
             qemu_args: -L /usr/powerpc64le-linux-gnu
             qemu_target: ppc64le-linux-user
-          - build: mips64el-linux-1.48
-            os: ubuntu-20.04 # TODO: remove pin when fixed (#483)
-            rust: 1.48
-            target: mips64el-unknown-linux-gnuabi64
-            gcc_package: gcc-mips64el-linux-gnuabi64
-            gcc: mips64el-linux-gnuabi64-gcc
-            qemu: qemu-mips64el
-            qemu_args: -L /usr/mips64el-linux-gnuabi64
-            qemu_target: mips64el-linux-user
-          - build: mipsel-linux-1.48
-            os: ubuntu-20.04 # TODO: remove pin when fixed (#483)
-            rust: 1.48
-            target: mipsel-unknown-linux-gnu
-            gcc_package: gcc-mipsel-linux-gnu
-            gcc: mipsel-linux-gnu-gcc
-            qemu: qemu-mipsel
-            qemu_args: -L /usr/mipsel-linux-gnu
-            qemu_target: mipsel-linux-user
           - build: arm-linux-1.48
             os: ubuntu-20.04 # TODO: remove pin when fixed (#483)
             rust: 1.48
@@ -464,10 +406,10 @@ jobs:
             rust: stable
           - build: windows
             os: windows-latest
-            rust: nightly-2023-07-03
+            rust: nightly
           - build: windows-2019
             os: windows-2019
-            rust: nightly-2023-07-03
+            rust: nightly
     steps:
     - uses: actions/checkout@v3
       with:
@@ -575,7 +517,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, mips64el-linux, mipsel-linux, riscv64-linux, arm-linux]
+        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, arm-linux]
         include:
           - build: ubuntu
             os: ubuntu-latest
@@ -605,24 +547,6 @@ jobs:
             qemu: qemu-ppc64le
             qemu_args: -L /usr/powerpc64le-linux-gnu
             qemu_target: ppc64le-linux-user
-          - build: mips64el-linux
-            os: ubuntu-latest
-            rust: stable
-            target: mips64el-unknown-linux-gnuabi64
-            gcc_package: gcc-mips64el-linux-gnuabi64
-            gcc: mips64el-linux-gnuabi64-gcc
-            qemu: qemu-mips64el
-            qemu_args: -L /usr/mips64el-linux-gnuabi64
-            qemu_target: mips64el-linux-user
-          - build: mipsel-linux
-            os: ubuntu-latest
-            rust: stable
-            target: mipsel-unknown-linux-gnu
-            gcc_package: gcc-mipsel-linux-gnu
-            gcc: mipsel-linux-gnu-gcc
-            qemu: qemu-mipsel
-            qemu_args: -L /usr/mipsel-linux-gnu
-            qemu_target: mipsel-linux-user
           - build: riscv64-linux
             os: ubuntu-latest
             rust: stable
@@ -712,42 +636,22 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        build: [powerpc64le-linux, mipsel-linux, mips64el-linux]
+        build: [powerpc64le-linux]
         include:
           - build: powerpc64le-linux
             os: ubuntu-latest
-            rust: nightly-2023-07-03
+            rust: nightly
             target: powerpc64le-unknown-linux-gnu
             gcc_package: gcc-powerpc64le-linux-gnu
             gcc: powerpc64le-linux-gnu-gcc
             qemu: qemu-ppc64le
             qemu_args: -L /usr/powerpc64le-linux-gnu
             qemu_target: ppc64le-linux-user
-          - build: mips64el-linux
-            os: ubuntu-latest
-            rust: nightly-2023-07-03
-            target: mips64el-unknown-linux-gnuabi64
-            gcc_package: gcc-mips64el-linux-gnuabi64
-            gcc: mips64el-linux-gnuabi64-gcc
-            qemu: qemu-mips64el
-            qemu_args: -L /usr/mips64el-linux-gnuabi64
-            qemu_target: mips64el-linux-user
-          - build: mipsel-linux
-            os: ubuntu-latest
-            rust: nightly-2023-07-03
-            target: mipsel-unknown-linux-gnu
-            gcc_package: gcc-mipsel-linux-gnu
-            gcc: mipsel-linux-gnu-gcc
-            qemu: qemu-mipsel
-            qemu_args: -L /usr/mipsel-linux-gnu
-            qemu_target: mipsel-linux-user
     env:
       # -D warnings is commented out in our install-rust action; re-add it here.
       RUSTFLAGS: --cfg rustix_use_experimental_asm -D warnings
       RUSTDOCFLAGS: --cfg rustix_use_experimental_asm
       CARGO_TARGET_POWERPC64LE_UNKNOWN_LINUX_GNU_RUSTFLAGS: --cfg rustix_use_experimental_asm
-      CARGO_TARGET_MIPSEL_UNKNOWN_LINUX_GNU_RUSTFLAGS: --cfg rustix_use_experimental_asm
-      CARGO_TARGET_MIPS64EL_UNKNOWN_LINUX_GNUABI64_RUSTFLAGS: --cfg rustix_use_experimental_asm
       QEMU_BUILD_VERSION: 7.0.0
     steps:
     - uses: actions/checkout@v3

README.md

@@ -87,8 +87,8 @@ by default. The rest of the API is conditional with cargo feature flags:
 
 ## Similar crates
 
-`rustix` is similar to [`nix`], [`simple_libc`], [`unix`], [`nc`], and
-[`uapi`]. `rustix` is architected for [I/O safety] with most APIs using
+`rustix` is similar to [`nix`], [`simple_libc`], [`unix`], [`nc`], [`uapi`],
+and [`rusl`]. `rustix` is architected for [I/O safety] with most APIs using
 [`OwnedFd`] and [`AsFd`] to manipulate file descriptors rather than `File` or
 even `c_int`, and supporting multiple backends so that it can use direct
 syscalls while still being usable on all platforms `libc` supports. Like `nix`,
@@ -136,6 +136,7 @@ version of this crate.
 [`nc`]: https://crates.io/crates/nc
 [`simple_libc`]: https://crates.io/crates/simple_libc
 [`uapi`]: https://crates.io/crates/uapi
+[`rusl`]: https://lib.rs/crates/rusl
 [`relibc`]: https://github.com/redox-os/relibc
 [`syscall`]: https://crates.io/crates/syscall
 [`sc`]: https://crates.io/crates/sc