Remove scopeguard

The scopeguard crate was being used for its `defer_on_unwind` macro.
The problem was that it runs even if the runtime was already panicking.
There aren't any changes to the macro which could have fixed this.
I instead wrote my own function to check for a specific panicking closure.

1 files changed, 0 insertions, 1 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 19eecb7..06ed70e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,7 +15,6 @@ categories = ["concurrency"]
 [dependencies]
 thread_local = "1"
 once_cell = "1"
-scopeguard = "1"
 lock_api = "0.4"
 parking_lot = { version = "0.12", optional = true }
 spin = { version = "0.9", optional = true }