2 files changed, 4 insertions, 59 deletions

diff --git a/crates/base_db/src/fixture.rs b/crates/base_db/src/fixture.rs
index 8d4641355..04e2be390 100644
--- a/crates/base_db/src/fixture.rs
+++ b/crates/base_db/src/fixture.rs
@@ -1,62 +1,4 @@
-//! Fixtures are strings containing rust source code with optional metadata.
-//! A fixture without metadata is parsed into a single source file.
-//! Use this to test functionality local to one file.
-//!
-//! Simple Example:
-//! ```
-//! r#"
-//! fn main() {
-//!     println!("Hello World")
-//! }
-//! "#
-//! ```
-//!
-//! Metadata can be added to a fixture after a `//-` comment.
-//! The basic form is specifying filenames,
-//! which is also how to define multiple files in a single test fixture
-//!
-//! Example using two files in the same crate:
-//! ```
-//! "
-//! //- /main.rs
-//! mod foo;
-//! fn main() {
-//!     foo::bar();
-//! }
-//!
-//! //- /foo.rs
-//! pub fn bar() {}
-//! "
-//! ```
-//!
-//! Example using two crates with one file each, with one crate depending on the other:
-//! ```
-//! r#"
-//! //- /main.rs crate:a deps:b
-//! fn main() {
-//!     b::foo();
-//! }
-//! //- /lib.rs crate:b
-//! pub fn b() {
-//!     println!("Hello World")
-//! }
-//! "#
-//! ```
-//!
-//! Metadata allows specifying all settings and variables
-//! that are available in a real rust project:
-//! - crate names via `crate:cratename`
-//! - dependencies via `deps:dep1,dep2`
-//! - configuration settings via `cfg:dbg=false,opt_level=2`
-//! - environment variables via `env:PATH=/bin,RUST_LOG=debug`
-//!
-//! Example using all available metadata:
-//! ```
-//! "
-//! //- /lib.rs crate:foo deps:bar,baz cfg:foo=a,bar=b env:OUTDIR=path/to,OTHER=foo
-//! fn insert_source_code_here() {}
-//! "
-//! ```
+//! A set of high-level utility fixture methods to use in tests.
 use std::{mem, str::FromStr, sync::Arc};
 
 use cfg::CfgOptions;
diff --git a/crates/base_db/src/lib.rs b/crates/base_db/src/lib.rs
index 5f77a0b1f..980a0ed98 100644
--- a/crates/base_db/src/lib.rs
+++ b/crates/base_db/src/lib.rs
@@ -59,6 +59,8 @@ pub trait CheckCanceled {
         Self: Sized + panic::RefUnwindSafe,
         F: FnOnce(&Self) -> T + panic::UnwindSafe,
     {
+        // Uncomment to debug missing cancellations.
+        // let _span = profile::heartbeat_span();
         panic::catch_unwind(|| f(self)).map_err(|err| match err.downcast::<Canceled>() {
             Ok(canceled) => *canceled,
             Err(payload) => panic::resume_unwind(payload),
@@ -68,6 +70,7 @@ pub trait CheckCanceled {
 
 impl<T: salsa::Database> CheckCanceled for T {
     fn check_canceled(&self) {
+        // profile::heartbeat();
         if self.salsa_runtime().is_current_revision_canceled() {
             Canceled::throw()
         }