From e62e7165f48b274f833856b5279a2a25db5d3114 Mon Sep 17 00:00:00 2001
From: Eliza Weisman <eliza@buoyant.io>
Date: Fri, 19 Nov 2021 16:21:19 -0800
Subject: [PATCH] chore: add MSRV cargo metadata (#1730)

This branch adds the `[package.rust]` metadata to `Cargo.toml` for all
crates. See https://rust-lang.github.io/rfcs/2495-min-rust-version.html
for details.
---
 examples/Cargo.toml              | 1 +
 tracing-appender/Cargo.toml      | 1 +
 tracing-attributes/Cargo.toml    | 1 +
 tracing-core/Cargo.toml          | 1 +
 tracing-error/Cargo.toml         | 1 +
 tracing-flame/Cargo.toml         | 1 +
 tracing-futures/Cargo.toml       | 1 +
 tracing-journald/Cargo.toml      | 1 +
 tracing-log/Cargo.toml           | 1 +
 tracing-macros/Cargo.toml        | 1 +
 tracing-opentelemetry/Cargo.toml | 1 +
 tracing-serde/Cargo.toml         | 1 +
 tracing-subscriber/Cargo.toml    | 1 +
 tracing-tower/Cargo.toml         | 1 +
 tracing/Cargo.toml               | 1 +
 15 files changed, 15 insertions(+)

diff --git a/examples/Cargo.toml b/examples/Cargo.toml
index 1ecc7bf221..c8bc237345 100644
--- a/examples/Cargo.toml
+++ b/examples/Cargo.toml
@@ -3,6 +3,7 @@ name = "tracing-examples"
 version = "0.0.0"
 publish = false
 edition = "2018"
+rust = "1.42.0"
 
 [features]
 default = []
diff --git a/tracing-appender/Cargo.toml b/tracing-appender/Cargo.toml
index c47711eefa..60dda02d10 100644
--- a/tracing-appender/Cargo.toml
+++ b/tracing-appender/Cargo.toml
@@ -18,6 +18,7 @@ categories = [
 ]
 keywords = ["logging", "tracing", "file-appender", "non-blocking-writer"]
 edition = "2018"
+rust = "1.51.0"
 
 [dependencies]
 crossbeam-channel = "0.5.0"
diff --git a/tracing-attributes/Cargo.toml b/tracing-attributes/Cargo.toml
index 9fa17dfae0..5b48606f15 100644
--- a/tracing-attributes/Cargo.toml
+++ b/tracing-attributes/Cargo.toml
@@ -28,6 +28,7 @@ keywords = ["logging", "tracing", "macro", "instrument", "log"]
 license = "MIT"
 readme = "README.md"
 edition = "2018"
+rust = "1.42.0"
 
 [lib]
 proc-macro = true
diff --git a/tracing-core/Cargo.toml b/tracing-core/Cargo.toml
index 4c97523692..04473f5d65 100644
--- a/tracing-core/Cargo.toml
+++ b/tracing-core/Cargo.toml
@@ -24,6 +24,7 @@ categories = [
 ]
 keywords = ["logging", "tracing", "profiling"]
 edition = "2018"
+rust = "1.42.0"
 
 [features]
 default = ["std"]
diff --git a/tracing-error/Cargo.toml b/tracing-error/Cargo.toml
index 21ec0f8b9a..1319ca12a0 100644
--- a/tracing-error/Cargo.toml
+++ b/tracing-error/Cargo.toml
@@ -32,6 +32,7 @@ keywords = [
     "backtrace"
 ]
 edition = "2018"
+rust = "1.42.0"
 
 [features]
 default = ["traced-error"]
diff --git a/tracing-flame/Cargo.toml b/tracing-flame/Cargo.toml
index a55263cebc..8a24865d7e 100644
--- a/tracing-flame/Cargo.toml
+++ b/tracing-flame/Cargo.toml
@@ -19,6 +19,7 @@ categories = [
     "asynchronous",
 ]
 keywords = ["tracing", "subscriber", "flamegraph", "profiling"]
+rust = "1.42.0"
 
 [features]
 default = ["smallvec"]
diff --git a/tracing-futures/Cargo.toml b/tracing-futures/Cargo.toml
index c5275d6bb1..0607245a29 100644
--- a/tracing-futures/Cargo.toml
+++ b/tracing-futures/Cargo.toml
@@ -16,6 +16,7 @@ categories = [
 ]
 keywords = ["logging", "profiling", "tracing", "futures", "async"]
 license = "MIT"
+rust = "1.42.0"
 
 [features]
 default = ["std-future", "std"]
diff --git a/tracing-journald/Cargo.toml b/tracing-journald/Cargo.toml
index 8c733367d7..1cee7fb9f8 100644
--- a/tracing-journald/Cargo.toml
+++ b/tracing-journald/Cargo.toml
@@ -13,6 +13,7 @@ categories = [
     "development-tools::profiling",
 ]
 keywords = ["tracing", "journald"]
+rust = "1.42.0"
 
 [dependencies]
 tracing-core = { path = "../tracing-core", version = "0.1.10" }
diff --git a/tracing-log/Cargo.toml b/tracing-log/Cargo.toml
index c72c302bf5..1ba84784b4 100644
--- a/tracing-log/Cargo.toml
+++ b/tracing-log/Cargo.toml
@@ -15,6 +15,7 @@ categories = [
 keywords = ["logging", "tracing", "log"]
 license = "MIT"
 readme = "README.md"
+rust = "1.42.0"
 
 [features]
 default = ["log-tracer", "trace-logger", "std"]
diff --git a/tracing-macros/Cargo.toml b/tracing-macros/Cargo.toml
index c49adb98c5..4f3418b46f 100644
--- a/tracing-macros/Cargo.toml
+++ b/tracing-macros/Cargo.toml
@@ -15,6 +15,7 @@ categories = [
 ]
 keywords = ["logging", "tracing"]
 license = "MIT"
+rust = "1.42.0"
 
 [dependencies]
 tracing = "0.1.18"
diff --git a/tracing-opentelemetry/Cargo.toml b/tracing-opentelemetry/Cargo.toml
index fb302f4488..9d3c191a08 100644
--- a/tracing-opentelemetry/Cargo.toml
+++ b/tracing-opentelemetry/Cargo.toml
@@ -17,6 +17,7 @@ categories = [
 keywords = ["tracing", "opentelemetry", "jaeger", "zipkin", "async"]
 license = "MIT"
 edition = "2018"
+rust = "1.42.0"
 
 [features]
 default = ["tracing-log"]
diff --git a/tracing-serde/Cargo.toml b/tracing-serde/Cargo.toml
index 8e7d21508b..552580ce46 100644
--- a/tracing-serde/Cargo.toml
+++ b/tracing-serde/Cargo.toml
@@ -16,6 +16,7 @@ categories = [
     "encoding",
 ]
 keywords = ["logging", "tracing", "serialization"]
+rust = "1.42.0"
 
 [dependencies]
 serde = "1"
diff --git a/tracing-subscriber/Cargo.toml b/tracing-subscriber/Cargo.toml
index f1177dfe9a..c29d0f1190 100644
--- a/tracing-subscriber/Cargo.toml
+++ b/tracing-subscriber/Cargo.toml
@@ -20,6 +20,7 @@ categories = [
     "asynchronous",
 ]
 keywords = ["logging", "tracing", "metrics", "subscriber"]
+rust = "1.42.0"
 
 [features]
 
diff --git a/tracing-tower/Cargo.toml b/tracing-tower/Cargo.toml
index f67c0d5d0d..f828a1c8a8 100644
--- a/tracing-tower/Cargo.toml
+++ b/tracing-tower/Cargo.toml
@@ -15,6 +15,7 @@ categories = [
 ]
 keywords = ["logging", "tracing"]
 license = "MIT"
+rust = "1.42.0"
 
 [features]
 default = ["tower-layer", "tower-make"]
diff --git a/tracing/Cargo.toml b/tracing/Cargo.toml
index e8997c7988..a5abc364b1 100644
--- a/tracing/Cargo.toml
+++ b/tracing/Cargo.toml
@@ -25,6 +25,7 @@ categories = [
 ]
 keywords = ["logging", "tracing", "metrics", "async"]
 edition = "2018"
+rust = "1.42.0"
 
 [dependencies]
 tracing-core = { path = "../tracing-core", version = "0.1.21", default-features = false }