scraper.sh: Stop using Mutt for email reports

Mutt is having an issue when being run from cron. It hangs and consumes
mass quantities of CPU, this stacks as subsequent calls by cron (every
ten minutes in my case) also hang. I don't feel like spending hours upon
hours trying to debug mutt, so I have disabled it's usage for the
scraper.sh script since it is trivial to setup cronie to use msmtp.

lib.sh

@@ -14,17 +14,17 @@ readonly ALL_OFF BOLD BLUE GREEN RED YELLOW
 
 plain() {
 	local mesg=$1; shift
-	printf "${BOLD}    ${mesg}${ALL_OFF}\n" "$@" >&2
+	printf "${BOLD}    ${mesg}${ALL_OFF}\n" "$@"
 }
 
 msg() {
 	local mesg=$1; shift
-	printf "${GREEN}####${ALL_OFF}${BOLD} ${mesg}${ALL_OFF}\n" "$@" >&2
+	printf "${GREEN}####${ALL_OFF}${BOLD} ${mesg}${ALL_OFF}\n" "$@"
 }
 
 msg2() {
 	local mesg=$1; shift
-	printf "${BLUE}  ##${ALL_OFF}${BOLD} ${mesg}${ALL_OFF}\n" "$@" >&2
+	printf "${BLUE}  ##${ALL_OFF}${BOLD} ${mesg}${ALL_OFF}\n" "$@"
 }
 
 warning() {

scraper.sh

@@ -16,7 +16,7 @@ usage() {
     echo "Options:"
     echo
     echo "    -h:    Show help information."
-    echo "    -n:    Don't send email."
+    echo "    -n:    Dry run."
     echo "    -d:    Show debug info."
     echo
 	echo "Examples:"
@@ -41,7 +41,6 @@ check_webpage() {
     # $1: The url to scrape
     # $2: The Perl regex to match with
     # $3: Expect match
-    # Sends a message on mismatch. Only the first match is checked.
     debug "Checking webpage: $1"
     debug "Using regex: `printf "%q" "$2"`"
     debug "Expecting: $3"
@@ -58,6 +57,8 @@ check_webpage() {
     fi
 }
 
+HAS_ERROR=0
+
 msg "scraper.sh started..."
 
 #
@@ -68,8 +69,8 @@ msg "Checking archiso download page for linux kernel version changes..."
 check_webpage "https://www.archlinux.org/download/" "(?<=Included Kernel:</strong> )[\d\.]+" "$AZB_KERNEL_ARCHISO_VERSION"
 
 if [[ $? != 0 ]]; then
-    msg2 "Sending notification..."
-    send_email "Push the required packages to the archiso repo!" "The archiso has been changed!"
+    error "The archiso has been changed!"
+    HAS_ERROR=1
 else
     msg2 "The archiso kernel version is current."
 fi
@@ -82,8 +83,8 @@ msg "Checking the online package database for i686 linux kernel version changes.
 check_webpage "https://www.archlinux.org/packages/core/i686/linux/" "(?<=<h2>linux )[\d\.-]+(?=</h2>)" "$AZB_GIT_KERNEL_X32_VERSION"
 
 if [[ $? != 0 ]]; then
-    msg2 "Sending notification..."
-    send_email "Update the archzfs repository!" "The i686 linux package has been changed!"
+    error "linux i686 is out-of-date!"
+    HAS_ERROR=1
 else
     msg2 "The i686 linux kernel package is current."
 fi
@@ -96,8 +97,8 @@ msg "Checking the online package database for x86_64 linux kernel version change
 check_webpage "https://www.archlinux.org/packages/core/x86_64/linux/" "(?<=<h2>linux )[\d\.-]+(?=</h2>)" "$AZB_GIT_KERNEL_X64_VERSION"
 
 if [[ $? != 0 ]]; then
-    msg2 "Sending notification..."
-    send_email "Update the archzfs repository!" "The x86_64 linux package has been changed!"
+    error "linux x86_64 is out-of-date!"
+    HAS_ERROR=1
 else
     msg2 "The x86_64 linux kernel package is current."
 fi
@@ -110,8 +111,8 @@ msg "Checking the online package database for i686 linux-lts kernel version chan
 check_webpage "https://www.archlinux.org/packages/core/i686/linux-lts/" "(?<=<h2>linux-lts )[\d\.-]+(?=</h2>)" "$AZB_LTS_KERNEL_X32_VERSION"
 
 if [[ $? != 0 ]]; then
-    msg2 "Sending notification..."
-    send_email "Update the archzfs repository!" "The i686 linux-lts package has been changed!"
+    error "linux-lts i686 is out-of-date!"
+    HAS_ERROR=1
 else
     msg2 "The i686 linux-lts kernel package is current."
 fi
@@ -124,8 +125,8 @@ msg "Checking the online package database for x86_64 linux-lts kernel version ch
 check_webpage "https://www.archlinux.org/packages/core/x86_64/linux-lts/" "(?<=<h2>linux-lts )[\d\.-]+(?=</h2>)" "$AZB_LTS_KERNEL_X64_VERSION"
 
 if [[ $? != 0 ]]; then
-    msg2 "Sending notification..."
-    send_email "Update the archzfs repository!" "The x86_64 linux-lts package has been changed!"
+    error "linux-lts x86_64 is out-of-date!"
+    HAS_ERROR=1
 else
     msg2 "The x86_64 linux-lts kernel package is current."
 fi
@@ -139,7 +140,12 @@ check_webpage "http://zfsonlinux.org/" "(?<=downloads/zfsonlinux/spl/spl-)[\d\.]
 
 if [[ $? != 0 ]]; then
     msg2 "Sending notification..."
-    send_email "Update the archzfs repository!" "The upstream ZOL packages have been changed!"
+    error "ZOL version has changed!"
+    HAS_ERROR=1
 else
     msg2 "The ZOL sources are current."
 fi
+
+if [[ $HAS_ERROR -eq 1 ]]; then
+    exit 1;
+fi