Merge branch 'debian/experimental2' into debian/sid

diff --cc debian/changelog
index 63cefad226cb7fc9727c3a04b8da27b4bc3c9cbb,574f1ab8dbd6a4def9f5690a9b3234c04b19dea3..e344eed393837211db198cb333f5528533994a36
--- 1/debian/changelog
--- 2/debian/changelog
+++ b/debian/changelog
@@@ -1,9 -1,29 +1,35 @@@
+ rustc (1.51.0+dfsg1-1~exp4) UNRELEASED; urgency=medium
+ 
+   * Install the rust-llvm-dwp symlink.
+ 
+  -- Ximin Luo <infinity0@debian.org>  Wed, 05 May 2021 22:07:55 +0100
+ 
+ rustc (1.51.0+dfsg1-1~exp3) experimental; urgency=medium
+ 
+   * Restore patch, not actually fixed upstream.
+ 
+  -- Ximin Luo <infinity0@debian.org>  Mon, 26 Apr 2021 16:17:12 +0100
+ 
+ rustc (1.51.0+dfsg1-1~exp2) experimental; urgency=medium
+ 
+   * Drop patch fixed upstream.
+   * Fix bootstrap with self version.
+ 
+  -- Ximin Luo <infinity0@debian.org>  Mon, 26 Apr 2021 12:26:43 +0100
+ 
+ rustc (1.51.0+dfsg1-1~exp1) experimental; urgency=medium
+ 
+   * New upstream release.
+   * Enable 32-bit windows support.
+ 
+  -- Ximin Luo <infinity0@debian.org>  Mon, 12 Apr 2021 11:04:36 +0100
+ 
 +rustc (1.50.0+dfsg1-1) unstable; urgency=medium
 +
 +  * Upload to unstable.
 +
 + -- Ximin Luo <infinity0@debian.org>  Sat, 18 Sep 2021 11:45:21 +0100
 +
  rustc (1.50.0+dfsg1-1~exp4) experimental; urgency=medium
  
    * Fix more tests with a backported upstream PR.

diff --cc debian/patches/series
index f4d9873d24b5a0fdbe12660907111fc312eb5405,bf700779b9680b4a0e2df4a40263fbb7899e3fef..65680596e3fd18e7c8ff76014b766e92c1db0c94
--- 1/debian/patches/series
--- 2/debian/patches/series
+++ b/debian/patches/series
@@@ -1,8 -1,7 +1,8 @@@
  # Patches for upstream
  
  # pending, or forwarded
- 9756838f612da2ef6c359aaea8bf0a69ad76716a.patch
 +u-85807.patch
+ u-fix-self-bootstrap.patch
  0001-Revert-Auto-merge-of-79547.patch
  u-84099.patch
  u-8d504aa90416668d8f6b4cbd449e2e1de20fb937.patch