diff --git a/src/bin/cargo/commands/tree.rs b/src/bin/cargo/commands/tree.rs
index 53569e8f7f7..e54b8b02078 100644
--- a/src/bin/cargo/commands/tree.rs
+++ b/src/bin/cargo/commands/tree.rs
@@ -1,5 +1,6 @@
 use crate::cli;
 use crate::command_prelude::*;
+use annotate_snippets::Level;
 use anyhow::{bail, format_err};
 use cargo::core::dependency::DepKind;
 use cargo::ops::Packages;
@@ -141,10 +142,16 @@ pub fn exec(gctx: &mut GlobalContext, args: &ArgMatches) -> CliResult {
 
     let no_dedupe = args.flag("no-dedupe") || args.flag("all");
     if args.flag("all") {
-        gctx.shell().warn(
-            "The `cargo tree` --all flag has been changed to --no-dedupe, \
-             and may be removed in a future version.\n\
-             If you are looking to display all workspace members, use the --workspace flag.",
+        gctx.shell().print_report(
+            &[Level::WARNING
+                .secondary_title(
+                    "the `cargo tree` --all flag has been changed to --no-dedupe, \
+                    and may be removed in a future version",
+                )
+                .element(Level::HELP.message(
+                    "if you are looking to display all workspace members, use the --workspace flag",
+                ))],
+            false,
         )?;
     }
 
diff --git a/src/cargo/ops/cargo_compile/mod.rs b/src/cargo/ops/cargo_compile/mod.rs
index f8dc0df07cb..d219322d240 100644
--- a/src/cargo/ops/cargo_compile/mod.rs
+++ b/src/cargo/ops/cargo_compile/mod.rs
@@ -58,6 +58,7 @@ use crate::util::interning::InternedString;
 use crate::util::{CargoResult, StableHasher};
 
 mod compile_filter;
+use annotate_snippets::Level;
 pub use compile_filter::{CompileFilter, FilterRule, LibRule};
 
 pub(super) mod unit_generator;
@@ -230,17 +231,24 @@ pub fn create_bcx<'a, 'gctx>(
     match build_config.intent {
         UserIntent::Test | UserIntent::Build | UserIntent::Check { .. } | UserIntent::Bench => {
             if ws.gctx().get_env("RUST_FLAGS").is_ok() {
-                gctx.shell()
-                    .warn("ignoring environment variable `RUST_FLAGS`")?;
-                gctx.shell().note("rust flags are passed via `RUSTFLAGS`")?;
+                gctx.shell().print_report(
+                    &[Level::WARNING
+                        .secondary_title("ignoring environment variable `RUST_FLAGS`")
+                        .element(Level::HELP.message("rust flags are passed via `RUSTFLAGS`"))],
+                    false,
+                )?;
             }
         }
         UserIntent::Doc { .. } | UserIntent::Doctest => {
             if ws.gctx().get_env("RUSTDOC_FLAGS").is_ok() {
-                gctx.shell()
-                    .warn("ignoring environment variable `RUSTDOC_FLAGS`")?;
-                gctx.shell()
-                    .note("rustdoc flags are passed via `RUSTDOCFLAGS`")?;
+                gctx.shell().print_report(
+                    &[Level::WARNING
+                        .secondary_title("ignoring environment variable `RUSTDOC_FLAGS`")
+                        .element(
+                            Level::HELP.message("rustdoc flags are passed via `RUSTDOCFLAGS`"),
+                        )],
+                    false,
+                )?;
             }
         }
     }
diff --git a/tests/testsuite/cargo_tree/dupe/mod.rs b/tests/testsuite/cargo_tree/dupe/mod.rs
index 165d1f8e938..fb468fb6399 100644
--- a/tests/testsuite/cargo_tree/dupe/mod.rs
+++ b/tests/testsuite/cargo_tree/dupe/mod.rs
@@ -2,6 +2,7 @@ use crate::prelude::*;
 use cargo_test_support::file;
 use cargo_test_support::project;
 use cargo_test_support::registry::Package;
+use cargo_test_support::str;
 
 #[cargo_test]
 fn case() {
@@ -34,3 +35,34 @@ fn case() {
         .stdout_eq(file!["stdout.term.svg"])
         .stderr_eq(file!["stderr.term.svg"]);
 }
+
+#[cargo_test]
+fn all_flag() {
+    Package::new("a", "1.0.0").dep("b", "1.0").publish();
+    Package::new("b", "1.0.0").dep("c", "1.0").publish();
+    Package::new("c", "1.0.0").publish();
+
+    let p = project()
+        .file(
+            "Cargo.toml",
+            r#"
+            [package]
+            name = "foo"
+            version = "0.1.0"
+
+            [dependencies]
+            a = "1.0"
+            b = "1.0"
+            "#,
+        )
+        .file("src/lib.rs", "")
+        .file("build.rs", "fn main() {}")
+        .build();
+
+    p.cargo("tree --all").with_stderr_data(str![[r#"
+[WARNING] the `cargo tree` --all flag has been changed to --no-dedupe, and may be removed in a future version
+  |
+  = [HELP] if you are looking to display all workspace members, use the --workspace flag
+...
+"#]]).run();
+}
diff --git a/tests/testsuite/rustdocflags.rs b/tests/testsuite/rustdocflags.rs
index ade2490a003..588c5aa5f95 100644
--- a/tests/testsuite/rustdocflags.rs
+++ b/tests/testsuite/rustdocflags.rs
@@ -116,7 +116,8 @@ fn rustdocflags_misspelled() {
         .env("RUSTDOC_FLAGS", "foo")
         .with_stderr_data(str![[r#"
 [WARNING] ignoring environment variable `RUSTDOC_FLAGS`
-[NOTE] rustdoc flags are passed via `RUSTDOCFLAGS`
+  |
+  = [HELP] rustdoc flags are passed via `RUSTDOCFLAGS`
 ...
 "#]])
         .run();
diff --git a/tests/testsuite/rustflags.rs b/tests/testsuite/rustflags.rs
index 5f401ba60cc..6d7c68f9e42 100644
--- a/tests/testsuite/rustflags.rs
+++ b/tests/testsuite/rustflags.rs
@@ -1441,13 +1441,12 @@ fn env_rustflags_misspelled() {
     for cmd in &["check", "build", "run", "test", "bench"] {
         p.cargo(cmd)
             .env("RUST_FLAGS", "foo")
-            .with_stderr_data(
-                "\
+            .with_stderr_data(str![[r#"
 [WARNING] ignoring environment variable `RUST_FLAGS`
-[NOTE] rust flags are passed via `RUSTFLAGS`
+  |
+  = [HELP] rust flags are passed via `RUSTFLAGS`
 ...
-",
-            )
+"#]])
             .run();
     }
 }
@@ -1473,7 +1472,8 @@ fn env_rustflags_misspelled_build_script() {
         .env("RUST_FLAGS", "foo")
         .with_stderr_data(str![[r#"
 [WARNING] ignoring environment variable `RUST_FLAGS`
-[NOTE] rust flags are passed via `RUSTFLAGS`
+  |
+  = [HELP] rust flags are passed via `RUSTFLAGS`
 [COMPILING] foo v0.0.1 ([ROOT]/foo)
 [FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [ELAPSED]s