remove all the hacks, add some improvements

Author: mark-i-m

.travis.yml

@@ -4,15 +4,15 @@ rust:
 cache:
 - cargo
 - directories:
-  - $HOME/linkcheck/
+  - book/linkcheck/
 before_install:
 - shopt -s globstar
 - MAX_LINE_LENGTH=100 bash ci/check_line_lengths.sh src/**/*.md
 install:
 - source ~/.cargo/env || true
 - bash -x ci/install.sh
 script:
-- bash -x ci/build.sh
+- mdbook build
 - mdbook test
 notifications:
   email:

book.toml

@@ -11,6 +11,7 @@ create-missing = false
 [output.html.search]
 
 [output.linkcheck]
-command = "sed 's/.*//'" # tell mdbook not to run, since we want to run it manually
 follow-web-links = true
 exclude = [ "crates\\.io", "gcc\\.godbolt\\.org", "youtube\\.com", "dl\\.acm\\.org" ]
+cache-timeout = 172800
+warning-policy = "error"

ci/build.sh

@@ -20,5 +20,5 @@ function cargo_install() {
   fi
 }
 
-cargo_install mdbook 0.3.1
-cargo_install mdbook-linkcheck 0.4.0
+cargo_install mdbook 0.3.4
+cargo_install mdbook-linkcheck 0.5.0