3 files changed, 7 insertions, 7 deletions
diff --git a/library/backtrace/.github/workflows/main.yml b/library/backtrace/.github/workflows/main.yml
index 5f4bd505b..c11b08dfd 100644
--- a/library/backtrace/.github/workflows/main.yml
+++ b/library/backtrace/.github/workflows/main.yml
@@ -33,8 +33,6 @@ jobs:
             rust: stable-i686-msvc
           - os: windows-latest
             rust: stable-x86_64-gnu
-          - os: windows-latest
-            rust: stable-i686-gnu
     steps:
     - uses: actions/checkout@v1
       with:
@@ -244,4 +242,4 @@ jobs:
         rustup toolchain install nightly --component miri
         rustup override set nightly
         cargo miri setup
-    - run: MIRIFLAGS="-Zmiri-disable-isolation -Zmiri-strict-provenance" cargo miri test
+    - run: MIRIFLAGS="-Zmiri-disable-isolation" cargo miri test
diff --git a/library/backtrace/Cargo.toml b/library/backtrace/Cargo.toml
index 2881c8e8f..ef1c5ec00 100644
--- a/library/backtrace/Cargo.toml
+++ b/library/backtrace/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "backtrace"
-version = "0.3.65"
+version = "0.3.66"
 authors = ["The Rust Project Developers"]
 build = "build.rs"
 license = "MIT/Apache-2.0"
@@ -44,7 +44,7 @@ addr2line = { version = "0.17.0", default-features = false }
 miniz_oxide = { version = "0.5.0", default-features = false }
 
 [dependencies.object]
-version = "0.28.0"
+version = "0.29.0"
 default-features = false
 features = ['read_core', 'elf', 'macho', 'pe', 'unaligned', 'archive']
 
diff --git a/library/backtrace/src/backtrace/miri.rs b/library/backtrace/src/backtrace/miri.rs
index 9a5f65b80..f8c496428 100644
--- a/library/backtrace/src/backtrace/miri.rs
+++ b/library/backtrace/src/backtrace/miri.rs
@@ -91,7 +91,7 @@ pub fn resolve_addr(ptr: *mut c_void) -> Frame {
     }
 }
 
-pub unsafe fn trace_unsynchronized<F: FnMut(&super::Frame) -> bool>(mut cb: F) {
+unsafe fn trace_unsynchronized<F: FnMut(&super::Frame) -> bool>(mut cb: F) {
     let len = miri_backtrace_size(0);
 
     let mut frames = Vec::with_capacity(len);
@@ -102,6 +102,8 @@ pub unsafe fn trace_unsynchronized<F: FnMut(&super::Frame) -> bool>(mut cb: F) {
 
     for ptr in frames.iter() {
         let frame = resolve_addr(*ptr as *mut c_void);
-        cb(&super::Frame { inner: frame });
+        if !cb(&super::Frame { inner: frame }) {
+            return;
+        }
     }
 }