diff --git a/Cargo.lock b/Cargo.lock
index 6bf57e4e13..957190fdb5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -152,6 +152,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "num-integer 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.87 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -521,7 +522,7 @@ dependencies = [
 
 [[package]]
 name = "insta"
-version = "0.5.4"
+version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "chrono 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -536,6 +537,7 @@ dependencies = [
  "serde 1.0.87 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.38 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_yaml 0.8.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "uuid 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -606,6 +608,9 @@ dependencies = [
 name = "lazy_static"
 version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "spin 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
+]
 
 [[package]]
 name = "lazycell"
@@ -874,7 +879,7 @@ dependencies = [
 
 [[package]]
 name = "proptest"
-version = "0.8.7"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bit-set 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -883,7 +888,8 @@ dependencies = [
  "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_xorshift 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex-syntax 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rusty-fork 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempfile 3.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -938,7 +944,7 @@ dependencies = [
  "arrayvec 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "ena 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "flexi_logger 0.10.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "insta 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "insta 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "join_to_string 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -957,7 +963,7 @@ name = "ra_ide_api"
 version = "0.1.0"
 dependencies = [
  "fst 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "insta 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "insta 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "jemalloc-ctl 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "jemallocator 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -980,10 +986,10 @@ dependencies = [
 name = "ra_ide_api_light"
 version = "0.1.0"
 dependencies = [
- "insta 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "insta 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "join_to_string 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "proptest 0.8.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proptest 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "ra_syntax 0.1.0",
  "ra_text_edit 0.1.0",
  "rustc-hash 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1053,7 +1059,7 @@ dependencies = [
 name = "ra_text_edit"
 version = "0.1.0"
 dependencies = [
- "proptest 0.8.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proptest 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "test_utils 0.1.0",
  "text_unit 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1083,18 +1089,6 @@ dependencies = [
  "walkdir 2.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "rand"
-version = "0.5.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "fuchsia-cprng 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "rand"
 version = "0.6.5"
@@ -1456,6 +1450,11 @@ dependencies = [
  "serde 1.0.87 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "spin"
+version = "0.4.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "stable_deref_trait"
 version = "1.1.1"
@@ -1792,6 +1791,15 @@ name = "utf8-ranges"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "uuid"
+version = "0.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.87 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "vec_map"
 version = "0.8.1"
@@ -1945,7 +1953,7 @@ dependencies = [
 "checksum indexmap 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7e81a7c05f79578dbc15793d8b619db9ba32b4577003ef3af1a91c416798c58d"
 "checksum inotify 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "40b54539f3910d6f84fbf9a643efd6e3aa6e4f001426c0329576128255994718"
 "checksum inotify-sys 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e74a1aa87c59aeff6ef2cc2fa62d41bc43f54952f55652656b18a02fd5e356c0"
-"checksum insta 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)" = "d560430a1f99db1ebb256cf85ff4a1aec37ffaac961ed598436580b65a38a177"
+"checksum insta 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bcdfb5ab565a1fc5c397722d5a9503f2095696ef07ef1a222d85a0fd6666c6aa"
 "checksum iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dbe6e417e7d0975db6512b90796e8ce223145ac4e33c377e4a42882a0e88bb08"
 "checksum itertools 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5b8467d9c1cebe26feb08c640139247fac215782d35371ade9a2136ed6085358"
 "checksum itoa 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "1306f3464951f30e30d12373d31c79fbd52d236e5e896fd92f96ec7babbbe60b"
@@ -1985,10 +1993,9 @@ dependencies = [
 "checksum pest_generator 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "63120576c4efd69615b5537d3d052257328a4ca82876771d6944424ccfd9f646"
 "checksum pest_meta 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f5a3492a4ed208ffc247adcdcc7ba2a95be3104f58877d0d02f0df39bf3efb5e"
 "checksum proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)" = "4d317f9caece796be1980837fd5cb3dfec5613ebdb04ad0956deea83ce168915"
-"checksum proptest 0.8.7 (registry+https://github.com/rust-lang/crates.io-index)" = "926d0604475349f463fe44130aae73f2294b5309ab2ca0310b998bd334ef191f"
+"checksum proptest 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2876d7bf780801d278b6886346eff87d91aa307cd790cc1209c789c4acfa1252"
 "checksum quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9274b940887ce9addde99c4eee6b5c44cc494b182b97e73dc8ffdcb3397fd3f0"
 "checksum quote 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)" = "cdd8e04bd9c52e0342b406469d494fcb033be4bdbe5c606016defbb1681411e1"
-"checksum rand 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c618c47cd3ebd209790115ab837de41425723956ad3ce2e6a7f09890947cacb9"
 "checksum rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "6d71dacdc3c88c1fde3885a3be3fbab9f35724e6ce99467f7d9c5026132184ca"
 "checksum rand_chacha 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "556d3a1ca6600bfcbab7c7c91ccb085ac7fbbcd70e008a98742e7847f4f7bcef"
 "checksum rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6fdeb83b075e8266dcc8762c22776f6877a63111121f5f8c7411e5be7eed4b"
@@ -2030,6 +2037,7 @@ dependencies = [
 "checksum slug 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "b3bc762e6a4b6c6fcaade73e77f9ebc6991b676f88bb2358bddb56560f073373"
 "checksum smallvec 0.6.8 (registry+https://github.com/rust-lang/crates.io-index)" = "88aea073965ab29f6edb5493faf96ad662fb18aa9eeb186a3b7057951605ed15"
 "checksum smol_str 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "9af1035bc5d742ab6b7ab16713e41cc2ffe78cb474f6f43cd696b2d16052007e"
+"checksum spin 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "ceac490aa12c567115b40b7b7fceca03a6c9d53d5defea066123debc83c5dc1f"
 "checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
 "checksum strsim 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bb4f380125926a99e52bc279241539c018323fab05ad6368b56f93d9369ff550"
 "checksum superslice 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b50b13d42370e0f5fc62eafdd5c2d20065eaf5458dab215ff3e20e63eea96b30"
@@ -2067,6 +2075,7 @@ dependencies = [
 "checksum url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dd4e7c0d531266369519a4aa4f399d748bd37043b00bde1e4ff1f60a120b355a"
 "checksum url_serde 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "74e7d099f1ee52f823d4bdd60c93c3602043c728f5db3b97bdb548467f7bddea"
 "checksum utf8-ranges 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "796f7e48bef87609f7ade7e06495a87d5cd06c7866e6a5cbfceffc558a243737"
+"checksum uuid 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)" = "0238db0c5b605dd1cf51de0f21766f97fba2645897024461d6a00c036819a768"
 "checksum vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
 "checksum version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "914b1a6776c4c929a602fafd8bc742e06365d4bcbe48c30f9cca5824f70dc9dd"
 "checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
diff --git a/crates/ra_hir/Cargo.toml b/crates/ra_hir/Cargo.toml
index 4309a05d6b..b47ce79526 100644
--- a/crates/ra_hir/Cargo.toml
+++ b/crates/ra_hir/Cargo.toml
@@ -22,4 +22,4 @@ test_utils = { path = "../test_utils" }
 
 [dev-dependencies]
 flexi_logger = "0.10.0"
-insta = "0.5.1"
+insta = "0.6.1"
diff --git a/crates/ra_ide_api/Cargo.toml b/crates/ra_ide_api/Cargo.toml
index 908899129f..54de9b2e3a 100644
--- a/crates/ra_ide_api/Cargo.toml
+++ b/crates/ra_ide_api/Cargo.toml
@@ -26,7 +26,7 @@ hir = { path = "../ra_hir", package = "ra_hir" }
 test_utils = { path = "../test_utils" }
 
 [dev-dependencies]
-insta = "0.5.1"
+insta = "0.6.1"
 
 [features]
 jemalloc = [ "jemallocator", "jemalloc-ctl" ]
diff --git a/crates/ra_ide_api_light/Cargo.toml b/crates/ra_ide_api_light/Cargo.toml
index 922245390c..c1e4314cec 100644
--- a/crates/ra_ide_api_light/Cargo.toml
+++ b/crates/ra_ide_api_light/Cargo.toml
@@ -16,5 +16,5 @@ ra_text_edit = { path = "../ra_text_edit" }
 
 [dev-dependencies]
 test_utils = { path = "../test_utils" }
-proptest = "0.8.7"
-insta = "0.5.1"
+proptest = "0.9.0"
+insta = "0.6.1"
diff --git a/crates/ra_text_edit/Cargo.toml b/crates/ra_text_edit/Cargo.toml
index 71f6ce1adc..7f30251d40 100644
--- a/crates/ra_text_edit/Cargo.toml
+++ b/crates/ra_text_edit/Cargo.toml
@@ -7,7 +7,7 @@ publish = false
 
 [dependencies]
 text_unit = "0.1.6"
-proptest = "0.8.7"
+proptest = "0.9.0"
 
 [dev-dependencies]
 test_utils = { path = "../test_utils" }