Upgrade python to 3.6 in order for f-strings to work

Attempt #2 at fixing gitlab

Attempt at fixing gitlab build #3: damn symlinks

.gitlab-ci.yml

@@ -51,7 +51,7 @@ cppcheck-misra:
   before_script:
   # install cppcheck from the sid repos in order to get the latest version
     - echo deb http://deb.debian.org/debian sid main > /etc/apt/sources.list  
-    - apt-get update -qq && apt-get -t sid install -y -qq cppcheck
+    - apt-get update -qq && apt-get -t sid install -y -qq cppcheck && apt-get -t sid install -y python3.6
     - cppcheck --version
   script:
     - ci/cppcheck-misra.sh

ci/cppcheck-misra.sh

@@ -26,5 +26,4 @@ sed -i -r 's/(.*Script.*)|(.*Checking.*)|(.*MISRA.*)//gm; /(^$)/d; s/(\s\(.*\)\s
 
 # run the summarizer for a nice, clean summary of errors
 echo -e "\u001b[34;1mSummarizing results...\u001b[0m"
-python3 --version
-python3 ci/summarizer.py ci/report.msr
+python3.6 ci/summarizer.py ci/report.msr

ci/summarizer.py

@@ -61,7 +61,7 @@ class Summarizer(object):
                 name_string = f"{self.bold}{self.red}File {self.yellow}{key}{self.red}"
                 rule_violated_string = f"violates rule {self.yellow}#{error[1]}{self.red} of the MISRA C 2012 standard"
                 line_number_string = f"at line {self.yellow}{error[0]}{self.end}"
-
+                
                 print(f"{name_string.ljust(75)} {rule_violated_string} {line_number_string}")
 
         print("")