diff --git a/Cargo.lock b/Cargo.lock
index be201ef53..59df3ba2f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -486,7 +486,7 @@ dependencies = [
  "r2d2_sqlite 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "reqwest 0.9.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "reqwest 0.9.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "rusqlite 0.19.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustyline 4.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.97 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1841,7 +1841,7 @@ dependencies = [
 
 [[package]]
 name = "reqwest"
-version = "0.9.18"
+version = "0.9.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "base64 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1869,6 +1869,7 @@ dependencies = [
  "tokio-timer 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "uuid 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winreg 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2605,6 +2606,14 @@ dependencies = [
  "winapi-util 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "winreg"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "winutil"
 version = "0.1.1"
@@ -2847,7 +2856,7 @@ dependencies = [
 "checksum remove_dir_all 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "4a83fa3702a688b9359eccba92d153ac33fd2e8462f9e0e3fdf155239ea7792e"
 "checksum rental 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)" = "01916ebd9fc2e81978a5dc9542a2fa47f5bb2ca3402e14c7cc42d6e3c5123e1f"
 "checksum rental-impl 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)" = "82260d54cf2cbe9608df161f7e7c98e81fae702aa13af9e4d5d39dc2ffb25ab6"
-"checksum reqwest 0.9.18 (registry+https://github.com/rust-lang/crates.io-index)" = "00eb63f212df0e358b427f0f40aa13aaea010b470be642ad422bcbca2feff2e4"
+"checksum reqwest 0.9.19 (registry+https://github.com/rust-lang/crates.io-index)" = "1d0777154c2c3eb54f5c480db01de845652d941e47191277cc673634c3853939"
 "checksum ripemd160 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ad5112e0dbbb87577bfbc56c42450235e3012ce336e29c5befd7807bd626da4a"
 "checksum rsa 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "6ad8d3632f6745bb671c8637e2aa44015537c5e384789d2ea3235739301ed1e0"
 "checksum rusqlite 0.19.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6ebca2e7e3deb7241b7fa5929c088548c590728b1b740c479594c23f813eb8a7"
@@ -2937,6 +2946,7 @@ dependencies = [
 "checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 "checksum wincolor 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "eeb06499a3a4d44302791052df005d5232b927ed1a9658146d842165c4de7767"
 "checksum wincolor 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "561ed901ae465d6185fa7864d63fbd5720d0ef718366c9a4dc83cf6170d7e9ba"
+"checksum winreg 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "73f1f3c6c4d3cab118551b96c476a2caab920701e28875b64a458f2ecb96ec9d"
 "checksum winutil 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7daf138b6b14196e3830a588acf1e86966c694d3e8fb026fb105b8b5dca07e6e"
 "checksum ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d59cefebd0c892fa2dd6de581e937301d8552cb44489cdff035c6187cb63fa5e"
 "checksum x25519-dalek 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7ee1585dc1484373cbc1cee7aafda26634665cf449436fd6e24bfd1fad230538"
diff --git a/src/dc_tools.rs b/src/dc_tools.rs
index b11c3b9a7..33393b7f9 100644
--- a/src/dc_tools.rs
+++ b/src/dc_tools.rs
@@ -1561,12 +1561,9 @@ pub fn to_string(s: *const libc::c_char) -> String {
     let cstr = unsafe { CStr::from_ptr(s) };
 
     cstr.to_str().map(|s| s.to_string()).unwrap_or_else(|err| {
-        eprintln!(
-            "Non utf8 string: '{:?}' ({:?})",
-            cstr.to_string_lossy(),
-            err
-        );
-        panic!("Non utf8 string: '{:?}' ({:?})", cstr.to_bytes(), err);
+        let lossy = cstr.to_string_lossy();
+        eprintln!("Non utf8 string: '{:?}' ({:?})", lossy, err);
+        lossy.to_string()
     })
 }