Fix installing rust on Alpine 3.10- (#1045)

* Fix detecting if rust is already installed

* Improve stability of rust uninstallation

* Fix installing rust on Alpine 3.10-

* Test installing datadog_trace

Test: ddtrace

install-php-extensions

@@ -2617,6 +2617,8 @@ installCargo() {
 	if command -v cargo >/dev/null; then
 		return
 	fi
+	installCargo_cargoversion=
+	if ! test -f "$HOME/.cargo/env"; then
 		printf '# Installing cargo\n'
 		case "$DISTRO" in
 			alpine)
@@ -2625,7 +2627,21 @@ installCargo() {
 				;;
 		esac
 		curl https://sh.rustup.rs -sSf | sh -s -- -y -q
+		case "$DISTRO" in
+			alpine)
+				if test $DISTRO_MAJMIN_VERSION -le 310; then
+					# With version 1.84.0 we have this error:
+					# Error relocating /root/.rustup/toolchains/stable-x86_64-unknown-linux-musl/bin/cargo: posix_spawn_file_actions_addchdir_np: symbol not found
+					# See https://github.com/rust-lang/rust/pull/131851#issue-2595663507
+					installCargo_cargoversion=1.83.0
+				fi
+				;;
+		esac
+	fi
 	. "$HOME/.cargo/env"
+	if test -n "$installCargo_cargoversion"; then
+		rustup default -- "$installCargo_cargoversion"
+	fi
 	if test -z "${IPE_UNINSTALL_CARGO:-}"; then
 		IPE_UNINSTALL_CARGO=y
 	fi
@@ -4961,9 +4977,13 @@ fixLetsEncrypt() {
 # Cleanup everything at the end of the execution
 cleanup() {
 	if test "${IPE_UNINSTALL_CARGO:-}" = y; then
+		if test -f "$HOME/.cargo/env"; then
 			. "$HOME/.cargo/env"
+		fi
+		if command -v rustup >/dev/null; then
 			rustup self uninstall -y
 		fi
+	fi
 	if test -n "$UNNEEDED_PACKAGE_LINKS"; then
 		printf '### REMOVING UNNEEDED PACKAGE LINKS ###\n'
 		for cleanup_link in $UNNEEDED_PACKAGE_LINKS; do