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

@@ -2617,15 +2617,31 @@ installCargo() {
 	if command -v cargo >/dev/null; then
 		return
 	fi
-	printf '# Installing cargo\n'
-	case "$DISTRO" in
-		alpine)
-			# see https://github.com/hyperledger/indy-vdr/issues/69#issuecomment-998104850
-			export RUSTFLAGS='-C target-feature=-crt-static'
-			;;
-	esac
-	curl https://sh.rustup.rs -sSf | sh -s -- -y -q
+	installCargo_cargoversion=
+	if ! test -f "$HOME/.cargo/env"; then
+		printf '# Installing cargo\n'
+		case "$DISTRO" in
+			alpine)
+				# see https://github.com/hyperledger/indy-vdr/issues/69#issuecomment-998104850
+				export RUSTFLAGS='-C target-feature=-crt-static'
+				;;
+		esac
+		curl https://sh.rustup.rs -sSf | sh -s -- -y -q
+		case "$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 "${IPE_UNINSTALL_CARGO:-}"; then
 		IPE_UNINSTALL_CARGO=y
 	fi
@@ -4961,8 +4977,12 @@ fixLetsEncrypt() {
 # Cleanup everything at the end of the execution
 cleanup() {
 	if test "${IPE_UNINSTALL_CARGO:-}" = y; then
-		. "$HOME/.cargo/env"
-		rustup self uninstall -y
+		if test -f "$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'