diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index 4537f668..5bcca714 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -18,7 +18,7 @@ jobs:
         config:
           - {os: windows-latest, r: 'release', rust-version: 'stable-msvc', rust-target: 'x86_64-pc-windows-gnu' }
           - {os: windows-latest, r: 'devel',   rust-version: 'stable-msvc', rust-target: 'x86_64-pc-windows-gnu' }
-          - {os: windows-latest, r: 'oldrel',  rust-version: 'stable-msvc', rust-target: 'x86_64-pc-windows-gnu', rtools-version: '42' }
+          - {os: windows-latest, r: 'oldrel',  rust-version: 'stable-msvc', rust-target: 'x86_64-pc-windows-gnu', rtools-version: '43' }
 
           - {os: macOS-latest,   r: 'release', rust-version: 'stable' }
 
@@ -29,6 +29,7 @@ jobs:
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
       R_KEEP_PKG_SOURCE: yes
+      REXTENDR_SKIP_DEV_TESTS: TRUE # TODO: Remove this when extendr/libR-sys issue is resolved
 
     steps:
       - uses: actions/checkout@v3
diff --git a/.github/workflows/test-coverage.yaml b/.github/workflows/test-coverage.yaml
index 2c5bb502..44c75e97 100644
--- a/.github/workflows/test-coverage.yaml
+++ b/.github/workflows/test-coverage.yaml
@@ -13,6 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+      REXTENDR_SKIP_DEV_TESTS: TRUE # TODO: Remove this when extendr/libR-sys issue is resolved
 
     steps:
       - uses: actions/checkout@v3
diff --git a/.github/workflows/test_pkg_gen.yaml b/.github/workflows/test_pkg_gen.yaml
index f2d7e9fd..c55af1df 100644
--- a/.github/workflows/test_pkg_gen.yaml
+++ b/.github/workflows/test_pkg_gen.yaml
@@ -22,7 +22,7 @@ jobs:
         config:
           - {os: windows-latest, r: 'release', rust-version: 'stable-msvc', rust-target: 'x86_64-pc-windows-gnu'}
           - {os: windows-latest, r: 'devel',   rust-version: 'stable-msvc', rust-target: 'x86_64-pc-windows-gnu'}
-          - {os: windows-latest, r: 'oldrel',  rust-version: 'stable-msvc', rust-target: 'x86_64-pc-windows-gnu', rtools-version: '42'}
+          - {os: windows-latest, r: 'oldrel',  rust-version: 'stable-msvc', rust-target: 'x86_64-pc-windows-gnu', rtools-version: '43'}
 
           - {os: macOS-latest,   r: 'release', rust-version: 'stable'}
 
diff --git a/R/create_extendr_package.R b/R/create_extendr_package.R
index abee654a..e970b9ce 100644
--- a/R/create_extendr_package.R
+++ b/R/create_extendr_package.R
@@ -1,4 +1,3 @@
-
 #' Create package that uses Rust
 #'
 #' @description
@@ -14,7 +13,6 @@
 #'
 #' @noRd
 create_extendr_package <- function(path, ...) {
-
   # error if usethis is not installed
   rlang::check_installed("usethis")
 
@@ -51,5 +49,4 @@ create_extendr_package <- function(path, ...) {
   )
 
   invisible(path)
-
 }
diff --git a/tests/testthat/helper.R b/tests/testthat/helper.R
index 4b70ee72..d5f58ee6 100644
--- a/tests/testthat/helper.R
+++ b/tests/testthat/helper.R
@@ -83,7 +83,7 @@ cat_file <- function(...) {
 
 #' Helper function for skipping tests when cargo subcommand is unavailable
 #' @param args Character vector, arguments to the `cargo` command. Pass to [processx::run()]'s args param.
-skip_if_cargo_bin <- function(args = "--help") {
+skip_if_cargo_unavailable <- function(args = "--help") {
   tryCatch(
     {
       processx::run("cargo", args, error_on_status = TRUE)
diff --git a/tests/testthat/test-clean.R b/tests/testthat/test-clean.R
index 7aa1d687..3ee022ee 100644
--- a/tests/testthat/test-clean.R
+++ b/tests/testthat/test-clean.R
@@ -2,7 +2,7 @@ test_that("rextendr::clean() removes cargo target directory & binaries", {
   skip_if_not_installed("usethis")
   skip_if_not_installed("devtools")
   skip_on_cran()
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
   skip_on_R42_win()
 
   path <- local_package("testpkg")
diff --git a/tests/testthat/test-document.R b/tests/testthat/test-document.R
index 34c33439..6aaa24df 100644
--- a/tests/testthat/test-document.R
+++ b/tests/testthat/test-document.R
@@ -2,7 +2,7 @@ test_that("Running `document` after adding multiple files", {
   skip_if_not_installed("usethis")
   skip_if_not_installed("devtools")
   skip_on_cran()
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   path <- local_package("testPackage")
   use_extendr()
@@ -18,7 +18,7 @@ test_that("Warn if using older rextendr", {
   skip_if_not_installed("usethis")
   skip_if_not_installed("devtools")
   skip_on_cran()
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   path <- local_package("futurepkg")
   use_extendr()
@@ -31,7 +31,7 @@ test_that("Update the Config/rextendr/version field in DESCRIPTION file", {
   skip_if_not_installed("usethis")
   skip_if_not_installed("devtools")
   skip_on_cran()
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   path <- local_package("oldpkg")
   use_extendr()
@@ -47,7 +47,7 @@ test_that("document() warns if NAMESPACE file is malformed", {
   skip_if_not_installed("usethis")
   skip_if_not_installed("devtools")
   skip_on_cran()
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   path <- local_package("testPackage")
   r"(exportPattern("^[[:alpha:]]+"))" |> brio::write_lines("NAMESPACE")
diff --git a/tests/testthat/test-eval.R b/tests/testthat/test-eval.R
index 5fd41927..bb9dcb20 100644
--- a/tests/testthat/test-eval.R
+++ b/tests/testthat/test-eval.R
@@ -1,5 +1,5 @@
 test_that("`rust_eval()` works", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   expect_equal(rust_eval("2 + 2"), 4)
   expect_visible(rust_eval("2 + 2"))
@@ -17,7 +17,7 @@ test_that("`rust_eval()` works", {
 # the order of compilation.
 # Returned integer values should be identical to the input sequence.
 test_that("multiple `rust_eval_deferred()` work correctly", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   provided_values <- seq_len(5)
   deferred_handles <- purrr::map(
@@ -44,7 +44,7 @@ test_that("multiple `rust_eval_deferred()` work correctly", {
 # the reverse order.
 # Returned integer values should be identical to the reversed input sequence.
 test_that("multiple `rust_eval_deferred()` work correctly in reverse order", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   provided_values <- seq_len(5)
 
@@ -72,7 +72,7 @@ test_that("multiple `rust_eval_deferred()` work correctly in reverse order", {
 # Third, attempt to execute the same compiled piece of code and
 # observe an error.
 test_that("`rust_eval_deferred()` disallows multiple executions of the same chunk", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   handle <- rust_eval_deferred("5i32 + 6i32")
 
@@ -92,7 +92,7 @@ test_that("`rust_eval_deferred()` disallows multiple executions of the same chun
 # Execute code chunk and verify result.
 # Test if the wrapper has been removed and dll unloaded.
 test_that("`rust_eval_deferred()` environment cleanup", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   handle <- rust_eval_deferred("42i32")
   fn_name <- attr(handle, "function_name")
@@ -116,7 +116,7 @@ test_that("`rust_eval_deferred()` environment cleanup", {
 # Compare wrapper function names and dll paths (should be unequal).
 # Execute both chunks and test results (should be equal).
 test_that("`rust_eval_deferred()` generates unique function names", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   rust_code <- "42f64"
 
diff --git a/tests/testthat/test-extendr_function_options.R b/tests/testthat/test-extendr_function_options.R
index e1cc1ae1..09161830 100644
--- a/tests/testthat/test-extendr_function_options.R
+++ b/tests/testthat/test-extendr_function_options.R
@@ -1,6 +1,5 @@
 test_that("`extendr` code is compiled with `either` feature and `use_try_from` enabled", {
-  skip_if_cargo_bin()
-  skip_if_opted_out_of_dev_tests()
+  skip_if_cargo_unavailable()
 
   rust_function(
     "fn type_aware_sum(input : Either<Integers, Doubles>) -> Either<Rint, Rfloat> {
@@ -11,8 +10,6 @@ test_that("`extendr` code is compiled with `either` feature and `use_try_from` e
     }",
     extendr_fn_options = list("use_try_from" = TRUE),
     features = "either",
-    use_dev_extendr = TRUE,
-    quiet = TRUE # Suppresses warnings while the feature is still experimental
   )
 
   int_sum <- type_aware_sum(1:5)
@@ -27,7 +24,7 @@ test_that("`extendr` code is compiled with `either` feature and `use_try_from` e
 })
 
 test_that("`r_name` option renames R function", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   rust_function(
     "fn func() -> &'static str {\"Modified Name\"}",
@@ -42,7 +39,7 @@ test_that("`rust_source()` errors if `extendr_fn_options` contains `NULL` value"
 })
 
 test_that("`rust_source()` errors if `extendr_fn_options` contains value of the wrong type", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   # due to the use of purrr here, the error that is emitted is on of class `mutate_error`
   # we cannot expect `rextendr_error` from this function.
@@ -50,13 +47,13 @@ test_that("`rust_source()` errors if `extendr_fn_options` contains value of the
 })
 
 test_that("`rust_source()` errors if `extendr_fn_options` contains option with an invalid name", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   expect_rextendr_error(rust_function("fn func() {}", extendr_fn_options = list("use try from" = TRUE)))
 })
 
 test_that("`rust_source()` errors if `extendr_fn_options` contains two invalid options", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   expect_rextendr_error(
     rust_function("fn func() {}", extendr_fn_options = list("use try from" = TRUE, "r_name" = NULL))
@@ -64,7 +61,7 @@ test_that("`rust_source()` errors if `extendr_fn_options` contains two invalid o
 })
 
 test_that("`rust_source()` warns if `extendr_fn_options` contains an unknown option", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   expect_warning( # Unknown option
     expect_rextendr_error( # Failed compilation because of the unknonw option
@@ -76,7 +73,7 @@ test_that("`rust_source()` warns if `extendr_fn_options` contains an unknown opt
 test_that(
   "`rust_source()` does not warn if `extendr_fn_options` contains an unknown option and `use_dev_extendr` is `TRUE`",
   {
-    skip_if_cargo_bin()
+    skip_if_cargo_unavailable()
     skip_if_opted_out_of_dev_tests()
 
     expect_rextendr_error( # Failed compilation because of the unknonw option
@@ -93,7 +90,7 @@ test_that(
 test_that(
   "`rust_function()` does not emit any messages when `quiet = TRUE`",
   {
-    skip_if_cargo_bin()
+    skip_if_cargo_unavailable()
 
     expect_no_message(rust_function(code = "fn func() {}", quiet = TRUE))
   }
diff --git a/tests/testthat/test-knitr-engine.R b/tests/testthat/test-knitr-engine.R
index fcffb4d8..2df4ee56 100644
--- a/tests/testthat/test-knitr-engine.R
+++ b/tests/testthat/test-knitr-engine.R
@@ -1,5 +1,5 @@
 test_that("knitr-engine works", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
   skip_if_not_installed("knitr")
 
   options <- knitr::opts_chunk$merge(list(
@@ -23,7 +23,7 @@ test_that("knitr-engine works", {
 
 
 test_that("Snapshot test of knitr-engine", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
   skip_if_not_installed("knitr")
 
   input <- file.path("../data/test-knitr-engine-source-01.Rmd")
diff --git a/tests/testthat/test-license_note.R b/tests/testthat/test-license_note.R
index 9e4a6465..280cb870 100644
--- a/tests/testthat/test-license_note.R
+++ b/tests/testthat/test-license_note.R
@@ -1,6 +1,6 @@
 test_that("LICENSE.note is generated properly", {
   skip_if_not_installed("usethis")
-  skip_if_cargo_bin(c("license", "--help"))
+  skip_if_cargo_unavailable(c("license", "--help"))
 
   local_package("testPackage")
   use_extendr()
diff --git a/tests/testthat/test-make-module-macro.R b/tests/testthat/test-make-module-macro.R
index ad7280ee..240b16ae 100644
--- a/tests/testthat/test-make-module-macro.R
+++ b/tests/testthat/test-make-module-macro.R
@@ -1,5 +1,5 @@
 test_that("Module macro generation", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   rust_src <- r"(
 #[extendr]
@@ -62,7 +62,7 @@ impl Counter {
 })
 
 test_that("Macro generation fails on invalid rust code", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   expect_rextendr_error(
     make_module_macro("#[extendr]\nlet invalid_var = ();"),
@@ -72,7 +72,7 @@ test_that("Macro generation fails on invalid rust code", {
 
 
 test_that("Macro generation fails on invalid comments in code", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   expect_rextendr_error(
     make_module_macro("/*/*/**/"),
@@ -99,7 +99,7 @@ test_that("Macro generation fails on invalid comments in code", {
 
 
 test_that("Rust code cleaning", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   expect_equal(
     fill_block_comments(c(
@@ -129,7 +129,7 @@ test_that("Rust code cleaning", {
 })
 
 test_that("Rust metadata capturing", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   expect_equal(
     find_extendr_attrs_ids(c(
diff --git a/tests/testthat/test-name-override.R b/tests/testthat/test-name-override.R
index a12ce53e..502e2ec9 100644
--- a/tests/testthat/test-name-override.R
+++ b/tests/testthat/test-name-override.R
@@ -1,5 +1,5 @@
 test_that("Multiple rust functions with the same name", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   rust_src_1 <- "
   #[extendr]
diff --git a/tests/testthat/test-optional-features.R b/tests/testthat/test-optional-features.R
index 318ead3e..797ff324 100644
--- a/tests/testthat/test-optional-features.R
+++ b/tests/testthat/test-optional-features.R
@@ -1,5 +1,5 @@
 test_that("Feature 'ndarray' is enabled when no extra dependencies are specified", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
   skip_on_R42_win()
 
   input <- file.path("../data/ndarray_example.rs")
@@ -16,7 +16,7 @@ test_that("Feature 'ndarray' is enabled when no extra dependencies are specified
 })
 
 test_that("Feature 'ndarray' is enabled when 'extendr-api' has features enabled", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
   skip_on_R42_win()
 
   input <- file.path("../data/ndarray_example.rs")
@@ -34,20 +34,20 @@ test_that("Feature 'ndarray' is enabled when 'extendr-api' has features enabled"
 })
 
 test_that("Enable multiple features simultaneously", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   rust_function("fn test_multiple_features() {}", features = c("ndarray", "serde", "graphics"))
   expect_no_error(test_multiple_features())
 })
 
 test_that("Passing integers to `features` results in error", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   expect_rextendr_error(rust_function("fn test() {}", features = 1:10))
 })
 
 test_that("Passing list to `features` results in error", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   expect_rextendr_error(rust_function("fn test() {}", features = list()))
 })
diff --git a/tests/testthat/test-source.R b/tests/testthat/test-source.R
index 311aa9f6..1eaaa975 100644
--- a/tests/testthat/test-source.R
+++ b/tests/testthat/test-source.R
@@ -1,5 +1,5 @@
 test_that("`rust_source()` works", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   rust_src <- "
     #[extendr]
@@ -44,14 +44,14 @@ test_that("`rust_source()` works", {
 
 
 test_that("`options` override `toolchain` value in `rust_source`", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   withr::local_options(rextendr.toolchain = "Non-existent-toolchain")
   expect_rextendr_error(rust_function("fn rust_test() {}"), "Rust code could not be compiled successfully. Aborting.")
 })
 
 test_that("`options` override `patch.crates_io` value in `rust_source`", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   withr::local_options(rextendr.patch.crates_io = list(`extendr-api` = "-1"))
   expect_rextendr_error(rust_function("fn rust_test() {}"), "Rust code could not be compiled successfully. Aborting.")
@@ -59,7 +59,7 @@ test_that("`options` override `patch.crates_io` value in `rust_source`", {
 
 
 test_that("`options` override `rextendr.extendr_deps` value in `rust_source`", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   withr::local_options(rextendr.extendr_deps = list(`extendr-api` = "-1"))
   expect_rextendr_error(rust_function("fn rust_test() {}"), "Rust code could not be compiled successfully. Aborting.")
@@ -69,7 +69,7 @@ test_that("`rust_source` works even when the PATH is not set correctly, which ma
   skip_on_os("windows") # On Windows, we have no concern as the only installation method is the official installer
   skip_on_os("linux") # On Linux, `cargo` might be on somewhere like `/usr/bin`, which is hard to eliminate
   skip_on_cran()
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   # Construct PATH without ~/.cargo/bin
   local_path <- Sys.getenv("PATH")
@@ -92,7 +92,7 @@ test_that("`rust_source` works even when the PATH is not set correctly, which ma
 
 # https://github.com/extendr/rextendr/issues/234
 test_that("`rust_code()` can compile code from rust file", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   input <- file.path("../data/rust_source.rs")
   expect_no_error(rust_source(input, module_name = "test_module"))
@@ -101,7 +101,7 @@ test_that("`rust_code()` can compile code from rust file", {
 
 # https://github.com/extendr/rextendr/issues/234
 test_that("`rust_code()` can compile code from rust file multiple times", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   input <- file.path("../data/rust_source.rs")
   expect_no_error(rust_source(input, module_name = "test_module"))
@@ -112,7 +112,7 @@ test_that("`rust_code()` can compile code from rust file multiple times", {
 
 # https://github.com/extendr/rextendr/issues/234
 test_that("`rust_code()` can compile code from rust files with identical names", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   input_1 <- file.path("../data/inner_1/rust_source.rs")
   input_2 <- file.path("../data/inner_2/rust_source.rs")
@@ -126,7 +126,7 @@ test_that("`rust_code()` can compile code from rust files with identical names",
 
 # https://github.com/extendr/rextendr/issues/264
 test_that("`rust_source()` should not raise internal error for code without extendr attrs", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   expect_no_error(rust_source(code = "fn test() {}"))
 })
diff --git a/tests/testthat/test-use_dev_extendr.R b/tests/testthat/test-use_dev_extendr.R
index 8a096daf..5823f5df 100644
--- a/tests/testthat/test-use_dev_extendr.R
+++ b/tests/testthat/test-use_dev_extendr.R
@@ -1,5 +1,5 @@
 test_that("`use_dev_extendr = TRUE` works together with `features`", {
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
   skip_if_opted_out_of_dev_tests()
 
   rust_function(
diff --git a/tests/testthat/test-use_extendr.R b/tests/testthat/test-use_extendr.R
index f64c5221..124cea6a 100644
--- a/tests/testthat/test-use_extendr.R
+++ b/tests/testthat/test-use_extendr.R
@@ -113,7 +113,7 @@ test_that("use_extendr() handles R packages with dots in the name", {
   skip_if_not_installed("usethis")
   skip_if_not_installed("devtools")
   skip_on_cran()
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   path <- local_package("a.b.c")
   use_extendr()
@@ -127,7 +127,7 @@ test_that("use_extendr() handles R package name, crate name and library name sep
   skip_if_not_installed("usethis")
   skip_if_not_installed("devtools")
   skip_on_cran()
-  skip_if_cargo_bin()
+  skip_if_cargo_unavailable()
 
   path <- local_package("testPackage")
   use_extendr(crate_name = "crate_name", lib_name = "lib_name")