e862bc93

By: Tom Sydney Kerckhove <syd@cs-syd.eu>

Let an unreadable sqitch.plan bubble up, and trim the changelogs

Catching the IOException only to fall back to an unscaled timeout bought
little: a plan the tests cannot read fails either way, and swallowing it
here meant the failure arrived later and further from its cause.
forwardCompatibilitymutation-dead-disablemutation-manifest-examplemutation-sydtest-mutation-examplemutation-sydtest-mutation-example-crosspre-commitreleaseshellconfiguredevShelldefaultmutation-sydtest-mutation-example-diffrelease-to-hackagex86_64-linux