Add repair flag to build.

src/nix_util/high_level.rs

@@ -43,6 +43,7 @@ where
         "--show-trace",
         "--max-jobs",
         "1",
+        "--repair",
         "--log-format",
         "internal-json",
         "-vvvvvvvvvvv",

src/nix_util/running_build.rs

@@ -3,7 +3,6 @@ use std::borrow::Cow;
 use sqlx::Row;
 use tokio::process::Child;
 use tracing::error;
-use tracing::info;
 
 use crate::Result;
 use crate::database::db_handle::DbHandle;