Auto merge of #108714 - estebank:ice_dump, r=oli-obk

On nightly, dump ICE backtraces to disk

Implement rust-lang/compiler-team#578.

When an ICE is encountered on nightly releases, the new rustc panic handler will also write the contents of the backtrace to disk. If any `delay_span_bug`s are encountered, their backtrace is also added to the file. The platform and rustc version will also be collected.

<img width="1032" alt="Screenshot 2023-03-03 at 2 13 25 PM" src="https://user-images.githubusercontent.com/1606434/222842420-8e039740-4042-4563-b31d-599677171acf.png">

The current behavior will *always* write to disk on nightly builds, regardless of whether the backtrace is printed to the terminal, unless the environment variable `RUSTC_ICE_DISK_DUMP` is set to `0`. This is a compromise and can be changed.

4 files changed, 7 insertions, 3 deletions

diff --git a/src/tools/clippy/clippy_lints/src/doc.rs b/src/tools/clippy/clippy_lints/src/doc.rs
index e5f39d102cd..8879c529262 100644
--- a/src/tools/clippy/clippy_lints/src/doc.rs
+++ b/src/tools/clippy/clippy_lints/src/doc.rs
@@ -729,7 +729,7 @@ fn check_code(cx: &LateContext<'_>, text: &str, edition: Edition, span: Span) {
                     false,
                     TerminalUrl::No,
                 );
-                let handler = Handler::with_emitter(false, None, Box::new(emitter));
+                let handler = Handler::with_emitter(false, None, Box::new(emitter), None);
                 let sess = ParseSess::with_span_handler(handler, sm);
 
                 let mut parser = match maybe_new_parser_from_source_str(&sess, filename, code) {
diff --git a/src/tools/compiletest/src/header.rs b/src/tools/compiletest/src/header.rs
index d67e9aaaa6e..4ae2249097f 100644
--- a/src/tools/compiletest/src/header.rs
+++ b/src/tools/compiletest/src/header.rs
@@ -232,7 +232,7 @@ impl TestProps {
             aux_builds: vec![],
             aux_crates: vec![],
             revisions: vec![],
-            rustc_env: vec![],
+            rustc_env: vec![("RUSTC_ICE".to_string(), "0".to_string())],
             unset_rustc_env: vec![],
             exec_env: vec![],
             unset_exec_env: vec![],
diff --git a/src/tools/rustfmt/src/parse/session.rs b/src/tools/rustfmt/src/parse/session.rs
index 81b5015dde3..92d2425cd3b 100644
--- a/src/tools/rustfmt/src/parse/session.rs
+++ b/src/tools/rustfmt/src/parse/session.rs
@@ -162,6 +162,7 @@ fn default_handler(
             ignore_path_set,
             can_reset,
         }),
+        None,
     )
 }
 
@@ -233,7 +234,7 @@ impl ParseSess {
     }
 
     pub(crate) fn set_silent_emitter(&mut self) {
-        self.parse_sess.span_diagnostic = Handler::with_emitter(true, None, silent_emitter());
+        self.parse_sess.span_diagnostic = Handler::with_emitter(true, None, silent_emitter(), None);
     }
 
     pub(crate) fn span_to_filename(&self, span: Span) -> FileName {
diff --git a/src/tools/tidy/src/deps.rs b/src/tools/tidy/src/deps.rs
index 9f0f0d86c8b..2be369d2b74 100644
--- a/src/tools/tidy/src/deps.rs
+++ b/src/tools/tidy/src/deps.rs
@@ -253,6 +253,9 @@ const PERMITTED_RUSTC_DEPENDENCIES: &[&str] = &[
     "thiserror-impl",
     "thorin-dwp",
     "thread_local",
+    "time",
+    "time-core",
+    "time-macros",
     "tinystr",
     "tinyvec",
     "tinyvec_macros",