fix for Julia 1.0

src/GitHubActions.jl

@@ -226,7 +226,13 @@ struct GitHubActionsLogger <: AbstractLogger
 end
 
 function get_gha_level()
-    is_debug = something(tryparse(Bool, get(ENV, "RUNNER_DEBUG", "false")), false)
+    env_str = get(ENV, "RUNNER_DEBUG", "false")
+    # `tryparse(Bool, "1")` does not work on Julia 1.0, so we special-case that value
+    # (which is the only documented value for `RUNNER_DEBUG`, so any other case should be
+    # due to the user setting it manually somehow).
+    env_str == "1" && return DEBUG
+    # Fallback for all other values:
+    is_debug = something(tryparse(Bool, env_str), false)
     return is_debug ? Debug : Info
 end