fix shellcheck error of SC2148

compiler/rustc_codegen_cranelift/scripts/config.sh

@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 set -e
 
 unamestr=`uname`

src/ci/docker/host-x86_64/dist-powerpc64-linux/shared.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 hide_output() {
   set +x
   on_err="

src/ci/docker/host-x86_64/dist-powerpc64le-linux/shared.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 hide_output() {
   set +x
   on_err="

src/ci/docker/host-x86_64/dist-riscv64-linux/crosstool-ng.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 set -ex
 
 # Mirrored from https://github.com/crosstool-ng/crosstool-ng/archive/crosstool-ng-1.24.0.tar.gz

src/ci/docker/host-x86_64/dist-various-1/install-mips-musl.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 set -ex
 
 mkdir /usr/local/mips-linux-musl

src/ci/docker/host-x86_64/dist-various-1/install-mipsel-musl.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 set -ex
 
 mkdir /usr/local/mipsel-linux-musl

src/ci/docker/host-x86_64/dist-various-2/shared.sh

@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 hide_output() {
   { set +x; } 2>/dev/null
   on_err="

src/ci/docker/host-x86_64/dist-x86_64-linux/shared.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 hide_output() {
   set +x
   on_err="

src/ci/docker/scripts/android-base-apt-get.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 set -ex
 
 apt-get update

src/ci/docker/scripts/android-ndk.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 set -ex
 
 URL=https://dl.google.com/android/repository

src/ci/docker/scripts/android-sdk.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 set -ex
 
 export ANDROID_HOME=/android/sdk

src/ci/docker/scripts/cross-apt-packages.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 apt-get update && apt-get install -y --no-install-recommends \
   automake \
   bison \

src/ci/docker/scripts/crosstool-ng-1.24.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 set -ex
 
 # Mirrored from https://github.com/crosstool-ng/crosstool-ng/archive/crosstool-ng-1.24.0.tar.gz

src/ci/docker/scripts/crosstool-ng.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 set -ex
 
 url="https://github.com/crosstool-ng/crosstool-ng/archive/crosstool-ng-1.22.0.tar.gz"

src/ci/docker/scripts/emscripten.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 set -ex
 
 hide_output() {

src/ci/docker/scripts/make3.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 set -ex
 
 curl -f https://ftp.gnu.org/gnu/make/make-3.81.tar.gz | tar xzf -

src/ci/docker/scripts/musl-toolchain.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 # This script runs `musl-cross-make` to prepare C toolchain (Binutils, GCC, musl itself)
 # and builds static libunwind that we distribute for static target.
 #

src/ci/docker/scripts/musl.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 set -ex
 
 hide_output() {

src/ci/docker/scripts/rustbuild-setup.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 set -ex
 
 groupadd -r rustbuild && useradd -m -r -g rustbuild rustbuild

src/ci/docker/scripts/sccache.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 set -ex
 
 case "$(uname -m)" in

src/test/run-make/thumb-none-qemu/script.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 set -exuo pipefail
 
 CRATE=example

src/test/run-make/x86_64-fortanix-unknown-sgx-lvi/script.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 set -exuo pipefail
 
 function build {