Added CI for minimum supported Rust version

[UebelAndre]

This change adds jobs to CI that test a minimum supported Rust version. This job is intended to inform contributors when a change is being made that would force users to upgrade their Rust version.

closes #828

[UebelAndre]

Rust Versiosn and associated repository errors

1.58.0

(17:15:55) ERROR: /var/lib/buildkite-agent/.cache/bazel/_bazel_buildkite-agent/ec321eb2cc2d0f8f91b676b6d4c66c29/external/cui__rustix-0.36.4/BUILD.bazel:27:13: Compiling Rust rlib rustix v0.36.4 (214 files) failed: (Exit 1): process_wrapper failed: error executing command (from target @cui__rustix-0.36.4//:rustix)
  (cd /var/lib/buildkite-agent/.cache/bazel/_bazel_buildkite-agent/ec321eb2cc2d0f8f91b676b6d4c66c29/sandbox/linux-sandbox/1064/execroot/rules_rust && \
  exec env - \
    CARGO_CFG_TARGET_ARCH=x86_64 \
    CARGO_CFG_TARGET_OS=linux \
    CARGO_CRATE_NAME=rustix \
    CARGO_MANIFEST_DIR='${pwd}/external/cui__rustix-0.36.4' \
    CARGO_PKG_AUTHORS='' \
    CARGO_PKG_DESCRIPTION='' \
    CARGO_PKG_HOMEPAGE='' \
    CARGO_PKG_NAME=rustix \
    CARGO_PKG_VERSION=0.36.4 \
    CARGO_PKG_VERSION_MAJOR=0 \
    CARGO_PKG_VERSION_MINOR=36 \
    CARGO_PKG_VERSION_PATCH=4 \
    CARGO_PKG_VERSION_PRE='' \
    OUT_DIR='${pwd}/bazel-out/k8-fastbuild/bin/external/cui__rustix-0.36.4/rustix_build_script.out_dir' \
    SYSROOT=bazel-out/k8-fastbuild/bin/external/rust_linux_x86_64__x86_64-unknown-linux-gnu__stable_tools/rust_toolchain \
  bazel-out/k8-opt-exec-2B5CBBC6/bin/util/process_wrapper/process_wrapper --env-file bazel-out/k8-fastbuild/bin/external/cui__rustix-0.36.4/rustix_build_script.env --arg-file bazel-out/k8-fastbuild/bin/external/cui__io-lifetimes-1.0.3/io-lifetimes_build_script.linksearchpaths --arg-file bazel-out/k8-fastbuild/bin/external/cui__libc-0.2.137/libc_build_script.linksearchpaths --arg-file bazel-out/k8-fastbuild/bin/external/cui__rustix-0.36.4/rustix_build_script.linksearchpaths --arg-file bazel-out/k8-fastbuild/bin/external/cui__rustix-0.36.4/rustix_build_script.flags --arg-file bazel-out/k8-fastbuild/bin/external/cui__rustix-0.36.4/rustix_build_script.linkflags --subst 'pwd=${pwd}' -- bazel-out/k8-fastbuild/bin/external/rust_linux_x86_64__x86_64-unknown-linux-gnu__stable_tools/rust_toolchain/bin/rustc external/cui__rustix-0.36.4/src/lib.rs '--crate-name=rustix' '--crate-type=rlib' '--error-format=human' '--codegen=metadata=-2586150994' '--codegen=extra-filename=-2586150994' '--out-dir=bazel-out/k8-fastbuild/bin/external/cui__rustix-0.36.4' '--codegen=opt-level=0' '--codegen=debuginfo=0' '--remap-path-prefix=${pwd}=' '--emit=dep-info,link' '--color=always' '--target=x86_64-unknown-linux-gnu' --cfg 'feature="default"' --cfg 'feature="io-lifetimes"' --cfg 'feature="libc"' --cfg 'feature="std"' --cfg 'feature="termios"' --cfg 'feature="use-libc-auxv"' -L bazel-out/k8-fastbuild/bin/external/rust_linux_x86_64__x86_64-unknown-linux-gnu__stable_tools/rust_toolchain/lib/rustlib/x86_64-unknown-linux-gnu/lib '--cap-lints=allow' '--edition=2018' '--extern=bitflags=bazel-out/k8-fastbuild/bin/external/cui__bitflags-1.3.2/libbitflags-2379027655.rlib' '--extern=io_lifetimes=bazel-out/k8-fastbuild/bin/external/cui__io-lifetimes-1.0.3/libio_lifetimes-818953534.rlib' '--extern=libc=bazel-out/k8-fastbuild/bin/external/cui__libc-0.2.137/liblibc-3499670893.rlib' '--extern=linux_raw_sys=bazel-out/k8-fastbuild/bin/external/cui__linux-raw-sys-0.1.3/liblinux_raw_sys-2074836458.rlib' '-Ldependency=bazel-out/k8-fastbuild/bin/external/cui__bitflags-1.3.2' '-Ldependency=bazel-out/k8-fastbuild/bin/external/cui__libc-0.2.137' '-Ldependency=bazel-out/k8-fastbuild/bin/external/cui__io-lifetimes-1.0.3' '-Ldependency=bazel-out/k8-fastbuild/bin/external/cui__linux-raw-sys-0.1.3')
# Configuration: ed4ae5ad847fcbdaf993fa00757c44deec9db819739f2edc305790ffca6d10be
# Execution platform: @local_config_platform//:host
 
Use --sandbox_debug to see verbose messages from the sandbox and retain the sandbox build root for debugging
error: could not find native static library `rustix_outline_x86_64`, perhaps an -L flag is missing?
 
error: aborting due to previous error

[UebelAndre]

While I think we should be testing the rules all together, there might be value in having more granular testing for this since the current failure on 1.58.0 is a failure in a transitive crate_universe dependency. Open to suggestions on how this should be structured.

[UebelAndre]

@scentini @krasimirgg any thoughts here?

[UebelAndre]

Gonna merge for now. The jobs can be updated in a separate change.