Fail on failure

Dependencies

• [2] NDJ6PZB7 * Fix symbol to look for.
• [3] NIQ2WDFP keep build directory
• [4] YQWH4POV * Simplify.
• [5] T4LLYESZ * Nix expression for building Hydra.
• [6] UQ6K57MS * Include nix-prefetch-svn in the Hydra binary distribution.
• [7] Y2BFYLLK * Install the SQL schemata in $out/share/hydra/sql.

Change contents

• edit in release.nix at line 88
  [3.1839]→[2.213:214](∅→∅),[2.214]→[3.0:64](∅→∅),[3.1839]→[3.0:64](∅→∅)
  −

  − succeedOnFailure = true;

  − keepBuildDirectory = true;