tokio unstable flag

.cargo/config.toml

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+[env]
+# set coin name for diem dependencies
+RUST_DIEM_COIN_MODULE="libra_coin"
+RUST_DIEM_COIN_NAME="LibraCoin"
+
+[target.'cfg(target_os = "linux")']
+# Dramatically increases the link performance for the eventbus
+rustflags = ["-C", "link-arg=-fuse-ld=lld"] # sudo apt -y install lld
+# Uncomment following lines for faster link times (see brew cmd to install zld)
+# [target.'cfg(target_os = "macos")']
+# rustflags = ["-C", "link-arg=-fuse-ld=/usr/local/bin/zld"] # brew install michaeleisel/zld/zld
+
+[build]
+rustflags = ["--cfg", "tokio_unstable", "-C", "force-frame-pointers=yes", "-C", "force-unwind-tables=yes"]
+
+# TODO(grao): Figure out whether we should enable other cpu features, and whether we should use a different way to configure them rather than list every single one here.
+[target.x86_64-unknown-linux-gnu]
+rustflags = [
+  "--cfg",
+  "tokio_unstable",
+  "-C",
+  "link-arg=-fuse-ld=lld",
+  "-C",
+  "force-frame-pointers=yes",
+  "-C",
+  "force-unwind-tables=yes",
+  "-C",
+  "target-feature=+sse4.2",
+]
+
+# 64 bit MSVC
+[target.x86_64-pc-windows-msvc]
+rustflags = [
+  "--cfg",
+  "tokio_unstable",
+  "-C",
+  "force-frame-pointers=yes",
+  "-C",
+  "force-unwind-tables=yes",
+  "-C",
+  "link-arg=/STACK:8000000", # Set stack to 8 MB
+]
+
+[target.aarch64-apple-darwin]
+rustflags = [
+  "-C",
+  "link-arg=-L/opt/homebrew/opt/gmp",
+]

.cargo/rustfmt.toml

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+reorder_imports = true
+imports_granularity = "Crate"