diff -Nru rust-cargo-0.43.1/debian/changelog rust-cargo-0.43.1/debian/changelog
--- rust-cargo-0.43.1/debian/changelog	2020-12-07 05:19:36.000000000 +0000
+++ rust-cargo-0.43.1/debian/changelog	2021-06-29 15:59:14.000000000 +0000
@@ -1,3 +1,12 @@
+rust-cargo (0.43.1-4) unstable; urgency=medium
+
+  * Team upload.
+  * Package cargo 0.43.1 from crates.io using debcargo 2.4.3
+  * Bump dependency on flate2 to ease buster->bullseye upgrades
+    (Closes: #990436).
+
+ -- Peter Michael Green <plugwash@debian.org>  Tue, 29 Jun 2021 15:59:14 +0000
+
 rust-cargo (0.43.1-3) unstable; urgency=medium
 
   * Team upload.
diff -Nru rust-cargo-0.43.1/debian/control rust-cargo-0.43.1/debian/control
--- rust-cargo-0.43.1/debian/control	2020-12-07 05:19:36.000000000 +0000
+++ rust-cargo-0.43.1/debian/control	2021-06-29 15:59:14.000000000 +0000
@@ -21,8 +21,8 @@
  librust-curl-sys-0.4+default-dev (>= 0.4.22-~~) <!nocheck>,
  librust-env-logger-0.7+default-dev <!nocheck>,
  librust-filetime-0.2+default-dev <!nocheck>,
- librust-flate2-1+default-dev (>= 1.0.3-~~) <!nocheck>,
- librust-flate2-1+zlib-dev (>= 1.0.3-~~) <!nocheck>,
+ librust-flate2-1+default-dev (>= 1.0.13-~~) <!nocheck>,
+ librust-flate2-1+zlib-dev (>= 1.0.13-~~) <!nocheck>,
  librust-fs2-0.4+default-dev <!nocheck>,
  librust-fwdansi-1+default-dev <!nocheck>,
  librust-git2-0.13+default-dev (>= 0.13.11-~~) <!nocheck>,
@@ -109,8 +109,8 @@
  librust-curl-sys-0.4+default-dev (>= 0.4.22-~~),
  librust-env-logger-0.7+default-dev,
  librust-filetime-0.2+default-dev,
- librust-flate2-1+default-dev (>= 1.0.3-~~),
- librust-flate2-1+zlib-dev (>= 1.0.3-~~),
+ librust-flate2-1+default-dev (>= 1.0.13-~~),
+ librust-flate2-1+zlib-dev (>= 1.0.13-~~),
  librust-fs2-0.4+default-dev,
  librust-fwdansi-1+default-dev,
  librust-git2-0.13+default-dev (>= 0.13.11-~~),
diff -Nru rust-cargo-0.43.1/debian/copyright rust-cargo-0.43.1/debian/copyright
--- rust-cargo-0.43.1/debian/copyright	2020-12-07 05:19:36.000000000 +0000
+++ rust-cargo-0.43.1/debian/copyright	2021-06-29 15:59:14.000000000 +0000
@@ -16,7 +16,7 @@
 
 Files: debian/*
 Copyright:
- 2018-2020 Debian Rust Maintainers <pkg-rust-maintainers@alioth-lists.debian.net>
+ 2018-2021 Debian Rust Maintainers <pkg-rust-maintainers@alioth-lists.debian.net>
  2018-2020 Ximin Luo <infinity0@debian.org>
 License: MIT or Apache-2.0
 
diff -Nru rust-cargo-0.43.1/debian/copyright.debcargo.hint rust-cargo-0.43.1/debian/copyright.debcargo.hint
--- rust-cargo-0.43.1/debian/copyright.debcargo.hint	2020-12-07 05:19:36.000000000 +0000
+++ rust-cargo-0.43.1/debian/copyright.debcargo.hint	2021-06-29 15:59:14.000000000 +0000
@@ -46,8 +46,8 @@
 
 Files: debian/*
 Copyright:
- 2018-2020 Debian Rust Maintainers <pkg-rust-maintainers@alioth-lists.debian.net>
- 2018-2020 Ximin Luo <infinity0@debian.org>
+ 2018-2021 Debian Rust Maintainers <pkg-rust-maintainers@alioth-lists.debian.net>
+ 2018-2021 Ximin Luo <infinity0@debian.org>
 License: MIT or Apache-2.0
 
 License: Apache-2.0
diff -Nru rust-cargo-0.43.1/debian/patches/bump-flate2.patch rust-cargo-0.43.1/debian/patches/bump-flate2.patch
--- rust-cargo-0.43.1/debian/patches/bump-flate2.patch	1970-01-01 00:00:00.000000000 +0000
+++ rust-cargo-0.43.1/debian/patches/bump-flate2.patch	2021-06-29 15:59:14.000000000 +0000
@@ -0,0 +1,15 @@
+Bump the flate2 dependency to help apt with updates from
+buster to bullseye (Closes: 990436)
+Index: cargo/Cargo.toml
+===================================================================
+--- cargo.orig/Cargo.toml
++++ cargo/Cargo.toml
+@@ -68,7 +68,7 @@ version = "0.7.0"
+ version = "0.2"
+ 
+ [dependencies.flate2]
+-version = "1.0.3"
++version = "1.0.13"
+ features = ["zlib"]
+ 
+ [dependencies.fs2]
diff -Nru rust-cargo-0.43.1/debian/patches/series rust-cargo-0.43.1/debian/patches/series
--- rust-cargo-0.43.1/debian/patches/series	2020-12-07 05:19:36.000000000 +0000
+++ rust-cargo-0.43.1/debian/patches/series	2021-06-29 15:59:14.000000000 +0000
@@ -1,3 +1,4 @@
 disable-vendor.patch
 disable-pretty-env-logger.patch
 relax-deps.patch
+bump-flate2.patch