diff --git a/Cargo.lock b/Cargo.lock
index 642f1452c37..dc810f97d59 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -847,6 +847,15 @@ dependencies = [
  "regex",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e91b62f79061a0bc2e046024cb7ba44b08419ed238ecbd9adbd787434b9e8c25"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "heck"
 version = "0.3.1"
@@ -964,11 +973,12 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "1.3.2"
+version = "1.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "076f042c5b7b98f31d205f1249267e12a6518c1481e9dae9764af19b707d2292"
+checksum = "4e47a3566dd4fd4eec714ae6ceabdee0caec795be835c223d92c2d40f1e8cf1c"
 dependencies = [
  "autocfg",
+ "hashbrown",
 ]
 
 [[package]]
@@ -1388,15 +1398,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "once_cell"
-version = "1.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0b631f7e854af39a1739f401cf34a8a013dfe09eac4fa4dba91e9768bd28168d"
-dependencies = [
- "parking_lot 0.10.2",
-]
-
 [[package]]
 name = "opaque-debug"
 version = "0.2.3"
@@ -1630,9 +1631,9 @@ dependencies = [
 
 [[package]]
 name = "racer"
-version = "2.1.37"
+version = "2.1.38"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db975752fc2c2430b4159d262585f7e45eb9aa43d733bf02c5f2fde512b00bfb"
+checksum = "51dd5fd4247115b28f3e038eb8cda76a0c6f9cb473f769f41f930af8adff22d0"
 dependencies = [
  "bitflags",
  "clap",
@@ -1904,9 +1905,9 @@ dependencies = [
 
 [[package]]
 name = "rustc-ap-rustc_arena"
-version = "671.0.0"
+version = "677.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4a3941333c39ffa778611a34692244052fc9ba0f6b02dcf019c8d24925707dd6"
+checksum = "2958af0d6e0458434a25cd3a96f6e19f24f71bf50b900add520dec52e212866b"
 dependencies = [
  "rustc-ap-rustc_data_structures",
  "smallvec 1.4.0",
@@ -1914,30 +1915,28 @@ dependencies = [
 
 [[package]]
 name = "rustc-ap-rustc_ast"
-version = "671.0.0"
+version = "677.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "27c579f7d89e6fc971b433e92bb2b8c65b716d7c797b21de8685945be9455610"
+checksum = "0c82c2510460f2133548e62399e5acd30c25ae6ece30245baab3d1e00c2fefac"
 dependencies = [
  "bitflags",
- "log",
  "rustc-ap-rustc_data_structures",
  "rustc-ap-rustc_index",
  "rustc-ap-rustc_lexer",
  "rustc-ap-rustc_macros",
  "rustc-ap-rustc_serialize",
  "rustc-ap-rustc_span",
- "scoped-tls",
  "smallvec 1.4.0",
+ "tracing",
 ]
 
 [[package]]
 name = "rustc-ap-rustc_ast_passes"
-version = "671.0.0"
+version = "677.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f9914fadee461568d19ca2ebaec8699ff898f8ffec9928154659a57ee018e5fd"
+checksum = "83977da57f81c6edd89bad47e49136680eaa33288de4abb702e95358c2a0fc6c"
 dependencies = [
  "itertools 0.8.2",
- "log",
  "rustc-ap-rustc_ast",
  "rustc-ap-rustc_ast_pretty",
  "rustc-ap-rustc_attr",
@@ -1947,31 +1946,33 @@ dependencies = [
  "rustc-ap-rustc_parse",
  "rustc-ap-rustc_session",
  "rustc-ap-rustc_span",
+ "tracing",
 ]
 
 [[package]]
 name = "rustc-ap-rustc_ast_pretty"
-version = "671.0.0"
+version = "677.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2a78c5cc50a2f294d3c4e9131a15676724c9f136d3ed54e9ba419850b6025cb3"
+checksum = "becf4ca1638b214694c71a8752192683048ab8bd47947cc481f57bd48157eeb9"
 dependencies = [
- "log",
  "rustc-ap-rustc_ast",
  "rustc-ap-rustc_span",
  "rustc-ap-rustc_target",
+ "tracing",
 ]
 
 [[package]]
 name = "rustc-ap-rustc_attr"
-version = "671.0.0"
+version = "677.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a78ce08227d146949755175c0cf710280a4b5bf6ee504c0e3f7ccc30d66fbfd9"
+checksum = "0f21ca5dadce8a40d75a2756b77eab75b4c2d827f645c622dd93ee2285599640"
 dependencies = [
  "rustc-ap-rustc_ast",
  "rustc-ap-rustc_ast_pretty",
  "rustc-ap-rustc_data_structures",
  "rustc-ap-rustc_errors",
  "rustc-ap-rustc_feature",
+ "rustc-ap-rustc_lexer",
  "rustc-ap-rustc_macros",
  "rustc-ap-rustc_serialize",
  "rustc-ap-rustc_session",
@@ -1981,9 +1982,9 @@ dependencies = [
 
 [[package]]
 name = "rustc-ap-rustc_data_structures"
-version = "671.0.0"
+version = "677.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9d5ac3735c38d2d0e95991ebcd7eb1618b60e784194a738e0ce2e8d39c39b809"
+checksum = "a4cd204764727fde9abf75333eb661f058bfc7242062d91019440fe1b240688b"
 dependencies = [
  "bitflags",
  "cfg-if",
@@ -1993,12 +1994,11 @@ dependencies = [
  "jobserver",
  "lazy_static",
  "libc",
- "log",
  "measureme",
- "once_cell",
  "parking_lot 0.10.2",
  "rustc-ap-rustc_graphviz",
  "rustc-ap-rustc_index",
+ "rustc-ap-rustc_macros",
  "rustc-ap-rustc_serialize",
  "rustc-hash",
  "rustc-rayon",
@@ -2006,34 +2006,36 @@ dependencies = [
  "smallvec 1.4.0",
  "stable_deref_trait",
  "stacker",
+ "tempfile",
+ "tracing",
  "winapi 0.3.8",
 ]
 
 [[package]]
 name = "rustc-ap-rustc_errors"
-version = "671.0.0"
+version = "677.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5166a95afa6e3b78ccbece4c2f1e163634854297f1147c6fd90e2712ed3fede5"
+checksum = "58116f119e37f14c029f99077b347069621118e048a69df74695b98204e7c136"
 dependencies = [
  "annotate-snippets 0.8.0",
  "atty",
- "log",
  "rustc-ap-rustc_data_structures",
+ "rustc-ap-rustc_macros",
  "rustc-ap-rustc_serialize",
  "rustc-ap-rustc_span",
  "termcolor",
  "termize",
+ "tracing",
  "unicode-width",
  "winapi 0.3.8",
 ]
 
 [[package]]
 name = "rustc-ap-rustc_expand"
-version = "671.0.0"
+version = "677.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a0586e83bdfe70eda8393429a8a38ecb529525dd252d787e479af075d3cab08"
+checksum = "48e3c4bda9b64b92805bebe7431fdb8e24fd112b35a8c6d2174827441f10a6b2"
 dependencies = [
- "log",
  "rustc-ap-rustc_ast",
  "rustc-ap-rustc_ast_passes",
  "rustc-ap-rustc_ast_pretty",
@@ -2042,18 +2044,20 @@ dependencies = [
  "rustc-ap-rustc_errors",
  "rustc-ap-rustc_feature",
  "rustc-ap-rustc_lexer",
+ "rustc-ap-rustc_macros",
  "rustc-ap-rustc_parse",
  "rustc-ap-rustc_serialize",
  "rustc-ap-rustc_session",
  "rustc-ap-rustc_span",
  "smallvec 1.4.0",
+ "tracing",
 ]
 
 [[package]]
 name = "rustc-ap-rustc_feature"
-version = "671.0.0"
+version = "677.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "48fc3aa8de0737a8c5a4353e6948548f469150d2b5d3eac391843de32c6c6ca2"
+checksum = "4b612bb67d3fc49f395b03fc4ea4384a0145b05afbadab725803074ec827632b"
 dependencies = [
  "lazy_static",
  "rustc-ap-rustc_data_structures",
@@ -2062,40 +2066,41 @@ dependencies = [
 
 [[package]]
 name = "rustc-ap-rustc_fs_util"
-version = "671.0.0"
+version = "677.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "59fd3380f4029020b693bbfd5a14ec8c893ec33c5c0063ad2e68e46d3fbd6a1f"
+checksum = "7630ad1a73a8434ee920676148cb5440ac57509bd20e94ec41087fb0b1d11c28"
 
 [[package]]
 name = "rustc-ap-rustc_graphviz"
-version = "671.0.0"
+version = "677.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b54bd98f70e04291bf611151d1fcd4d7770b35f7ec603d301c4aee0d1979cca4"
+checksum = "a603fca4817062eb4fb23ff129d475bd66a69fb32f34ed4362ae950cf814b49d"
 
 [[package]]
 name = "rustc-ap-rustc_index"
-version = "671.0.0"
+version = "677.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "335bfb187a2489a59ee8c67fcf5d1760e9dcdbe0f02025c199a74caa05096b15"
+checksum = "9850c4a5d7c341513e10802bca9588bf8f452ceea2d5cfa87b934246a52622bc"
 dependencies = [
  "arrayvec",
+ "rustc-ap-rustc_macros",
  "rustc-ap-rustc_serialize",
 ]
 
 [[package]]
 name = "rustc-ap-rustc_lexer"
-version = "671.0.0"
+version = "677.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22e1221f3bfa2943c942cf8da319ab2346887f8757778c29c7f1822cd27b521f"
+checksum = "6d86722e5a1a615b198327d0d794cd9cbc8b9db4542276fc51fe078924de68ea"
 dependencies = [
  "unicode-xid",
 ]
 
 [[package]]
 name = "rustc-ap-rustc_macros"
-version = "671.0.0"
+version = "677.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8b774df26c4ef513555b3a303cb209f44cf68a9e6a5481b41ac832301c6487cb"
+checksum = "b3fc8482e44cabdda7ac9a8e224aef62ebdf95274d629dac8db3b42321025fea"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2105,12 +2110,11 @@ dependencies = [
 
 [[package]]
 name = "rustc-ap-rustc_parse"
-version = "671.0.0"
+version = "677.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "065e632101bdd57a271f38ee7a4d72b5a3d0467ec845104346c284b2c6c69960"
+checksum = "3716cdcd978a91dbd4a2788400e90e809527f841426fbeb92f882f9b8582f3ab"
 dependencies = [
  "bitflags",
- "log",
  "rustc-ap-rustc_ast",
  "rustc-ap-rustc_ast_pretty",
  "rustc-ap-rustc_data_structures",
@@ -2119,14 +2123,16 @@ dependencies = [
  "rustc-ap-rustc_lexer",
  "rustc-ap-rustc_session",
  "rustc-ap-rustc_span",
+ "smallvec 1.4.0",
+ "tracing",
  "unicode-normalization",
 ]
 
 [[package]]
 name = "rustc-ap-rustc_serialize"
-version = "671.0.0"
+version = "677.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e8c0b704e3dedb97cbb1ac566bbc0ab397ec4a4743098326a8f2230463fd9f9"
+checksum = "c68046d07988b349b2e1c8bc1c9664a1d06519354aa677b9df358c5c5c058da0"
 dependencies = [
  "indexmap",
  "smallvec 1.4.0",
@@ -2134,32 +2140,32 @@ dependencies = [
 
 [[package]]
 name = "rustc-ap-rustc_session"
-version = "671.0.0"
+version = "677.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dda99ede4e6e260712754f8548b0a175b615686ad393653a3bd11f6c5e41a04e"
+checksum = "85735553501a4de0c8904e37b7ccef79cc1c585a7d7f2cfa02cc38e0d149f982"
 dependencies = [
  "bitflags",
  "getopts",
- "log",
  "num_cpus",
  "rustc-ap-rustc_ast",
  "rustc-ap-rustc_data_structures",
  "rustc-ap-rustc_errors",
  "rustc-ap-rustc_feature",
  "rustc-ap-rustc_fs_util",
+ "rustc-ap-rustc_macros",
  "rustc-ap-rustc_serialize",
  "rustc-ap-rustc_span",
  "rustc-ap-rustc_target",
+ "tracing",
 ]
 
 [[package]]
 name = "rustc-ap-rustc_span"
-version = "671.0.0"
+version = "677.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53453791c2c0b501a921927ce8e305a801eef130920873f8da92d83dad595236"
+checksum = "1c49ae8a0d3b9e27c6ffe8febeaa30f899294fff012de70625f9ee81c54fda85"
 dependencies = [
  "cfg-if",
- "log",
  "md-5",
  "rustc-ap-rustc_arena",
  "rustc-ap-rustc_data_structures",
@@ -2168,22 +2174,23 @@ dependencies = [
  "rustc-ap-rustc_serialize",
  "scoped-tls",
  "sha-1",
+ "tracing",
  "unicode-width",
 ]
 
 [[package]]
 name = "rustc-ap-rustc_target"
-version = "671.0.0"
+version = "677.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac82006fdb31ef44e24e1623f8b72ac2b404ef15ba20b7ebec0df35e5d20bbef"
+checksum = "1765f447594740c501c7b666b87639aa7c1dae2bf8c3166d5d2dca16646fd034"
 dependencies = [
  "bitflags",
- "log",
  "rustc-ap-rustc_data_structures",
  "rustc-ap-rustc_index",
  "rustc-ap-rustc_macros",
  "rustc-ap-rustc_serialize",
  "rustc-ap-rustc_span",
+ "tracing",
 ]
 
 [[package]]
@@ -2258,7 +2265,7 @@ dependencies = [
 [[package]]
 name = "rustfmt-config_proc_macro"
 version = "0.2.0"
-source = "git+https://github.com/rust-lang/rustfmt?branch=rustfmt-1.4.20#48f6c32ec1dd370f3157a27b48a000fd8c1185af"
+source = "git+https://github.com/rust-lang/rustfmt?branch=rustfmt-1.4.21#01f2eadccc74cf70eb11e6300ffa7e02b18b0027"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2267,8 +2274,8 @@ dependencies = [
 
 [[package]]
 name = "rustfmt-nightly"
-version = "1.4.20"
-source = "git+https://github.com/rust-lang/rustfmt?branch=rustfmt-1.4.20#48f6c32ec1dd370f3157a27b48a000fd8c1185af"
+version = "1.4.21"
+source = "git+https://github.com/rust-lang/rustfmt?branch=rustfmt-1.4.21#01f2eadccc74cf70eb11e6300ffa7e02b18b0027"
 dependencies = [
  "annotate-snippets 0.6.1",
  "anyhow",
@@ -2499,9 +2506,9 @@ checksum = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
 
 [[package]]
 name = "stacker"
-version = "0.1.9"
+version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72dd941b456e1c006d6b9f27c526d5b69281288aeea8cba82c19d3843d8ccdd2"
+checksum = "a92bc346006ae78c539d6ab2cf1a1532bc657b8339c464877a990ec82073c66f"
 dependencies = [
  "cc",
  "cfg-if",
@@ -2924,6 +2931,37 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "tracing"
+version = "0.1.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6d79ca061b032d6ce30c660fded31189ca0b9922bf483cd70759f13a2d86786c"
+dependencies = [
+ "cfg-if",
+ "tracing-attributes",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-attributes"
+version = "0.1.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "80e0ccfc3378da0cce270c946b676a376943f5cd16aeba64568e7939806f4ada"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "tracing-core"
+version = "0.1.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4f0e00789804e99b20f12bc7003ca416309d28a6f495d6af58d1e2c2842461b5"
+dependencies = [
+ "lazy_static",
+]
+
 [[package]]
 name = "typenum"
 version = "1.12.0"
diff --git a/Cargo.toml b/Cargo.toml
index ad15d69ca85..fac5b7c9da9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -42,11 +42,11 @@ lsp-types = { version = "0.60", features = ["proposed"] }
 lazy_static = "1"
 log = "0.4"
 num_cpus = "1"
-racer = { version = "2.1.37", default-features = false }
+racer = { version = "2.1.38", default-features = false }
 rand = "0.7"
 rayon = "1"
 rustc_tools_util = "0.2"
-rustfmt-nightly = { version = "1.4.20", git = "https://github.com/rust-lang/rustfmt", branch = "rustfmt-1.4.20" }
+rustfmt-nightly = { version = "1.4.21", git = "https://github.com/rust-lang/rustfmt", branch = "rustfmt-1.4.21" }
 serde = "1.0"
 serde_json = "1.0"
 serde_derive = "1.0"
diff --git a/ci/azure-install-rust.yml b/ci/azure-install-rust.yml
index 02176592a6f..3939ba37747 100644
--- a/ci/azure-install-rust.yml
+++ b/ci/azure-install-rust.yml
@@ -4,7 +4,7 @@ steps:
       set -e
       curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain none
       export PATH=$PATH:$HOME/.cargo/bin
-      rustup toolchain install $RUSTUP_TOOLCHAIN
+      rustup toolchain install $RUSTUP_TOOLCHAIN --force
       rustup default $RUSTUP_TOOLCHAIN
       echo "##vso[task.setvariable variable=PATH;]$PATH:$HOME/.cargo/bin"
     env:
@@ -17,7 +17,7 @@ steps:
       curl -sSf -o rustup-init.exe https://win.rustup.rs
       rustup-init.exe -y --default-toolchain none
       set PATH=%PATH%;%USERPROFILE%\.cargo\bin
-      rustup toolchain install %RUSTUP_TOOLCHAIN%
+      rustup toolchain install %RUSTUP_TOOLCHAIN% --force
       rustup default %RUSTUP_TOOLCHAIN%
       echo "##vso[task.setvariable variable=PATH;]%PATH%;%USERPROFILE%\.cargo\bin"
     env:
diff --git a/tests/fixtures/hover/save_data/test_tooltip_mod_use_external.rs.0004_012.json b/tests/fixtures/hover/save_data/test_tooltip_mod_use_external.rs.0004_012.json
index ece90b14303..653e5fabf51 100644
--- a/tests/fixtures/hover/save_data/test_tooltip_mod_use_external.rs.0004_012.json
+++ b/tests/fixtures/hover/save_data/test_tooltip_mod_use_external.rs.0004_012.json
@@ -7,9 +7,9 @@
   "data": {
     "Ok": [{
         "language": "rust",
-        "value": "libstd/sync/mod.rs"
+        "value": "std/src/sync/mod.rs"
       },
-      "Useful synchronization primitives.\n\n## The need for synchronization\n\nConceptually, a Rust program is a series of operations which will\nbe executed on a computer. The timeline of events happening in the\nprogram is consistent with the order of the operations in the code."
+      "Useful synchronization primitives.\n\n## The need for synchronization\n\nConceptually, a Rust program is a series of operations which will\nbe executed on a computer. The timeline of events happening in the\nprogram is consistent with the order of the operations in the code.\n\nConsider the following code, operating on some global static variables:\n\n```rust\nstatic mut A: u32 = 0;"
     ]
   }
 }
diff --git a/tests/fixtures/hover/save_data/test_tooltip_mod_use_external.rs.0005_012.json b/tests/fixtures/hover/save_data/test_tooltip_mod_use_external.rs.0005_012.json
index 8269d9637b6..6d5971bd94e 100644
--- a/tests/fixtures/hover/save_data/test_tooltip_mod_use_external.rs.0005_012.json
+++ b/tests/fixtures/hover/save_data/test_tooltip_mod_use_external.rs.0005_012.json
@@ -7,9 +7,9 @@
   "data": {
     "Ok": [{
         "language": "rust",
-        "value": "libstd/sync/mod.rs"
+        "value": "std/src/sync/mod.rs"
       },
-      "Useful synchronization primitives.\n\n## The need for synchronization\n\nConceptually, a Rust program is a series of operations which will\nbe executed on a computer. The timeline of events happening in the\nprogram is consistent with the order of the operations in the code."
+      "Useful synchronization primitives.\n\n## The need for synchronization\n\nConceptually, a Rust program is a series of operations which will\nbe executed on a computer. The timeline of events happening in the\nprogram is consistent with the order of the operations in the code.\n\nConsider the following code, operating on some global static variables:\n\n```rust\nstatic mut A: u32 = 0;"
     ]
   }
 }
diff --git a/tests/fixtures/hover/save_data/test_tooltip_std.rs.0009_012.json b/tests/fixtures/hover/save_data/test_tooltip_std.rs.0009_012.json
index 2a2e4033b39..bb805b69b37 100644
--- a/tests/fixtures/hover/save_data/test_tooltip_std.rs.0009_012.json
+++ b/tests/fixtures/hover/save_data/test_tooltip_std.rs.0009_012.json
@@ -10,7 +10,7 @@
         "language": "rust",
         "value": "pub fn push(&mut self, value: T)"
       },
-      "Appends an element to the back of a collection.\n\n# Panics\n\nPanics if the number of elements in the vector overflows a `usize`.\n\n# Examples\n\n```rust\nlet mut vec = vec![1, 2];\nvec.push(3);\nassert_eq!(vec, [1, 2, 3]);\n```"
+      "Appends an element to the back of a collection.\n\n# Panics\n\nPanics if the new capacity exceeds `isize::MAX` bytes.\n\n# Examples\n\n```rust\nlet mut vec = vec![1, 2];\nvec.push(3);\nassert_eq!(vec, [1, 2, 3]);\n```"
     ]
   }
 }
\ No newline at end of file
diff --git a/tests/fixtures/hover/save_data/test_tooltip_std.rs.0015_017.json b/tests/fixtures/hover/save_data/test_tooltip_std.rs.0015_017.json
index b786296489d..5fd627d906d 100644
--- a/tests/fixtures/hover/save_data/test_tooltip_std.rs.0015_017.json
+++ b/tests/fixtures/hover/save_data/test_tooltip_std.rs.0015_017.json
@@ -8,10 +8,10 @@
     "Ok": [
       {
         "language": "rust",
-        "value": "src/liballoc/string.rs"
+        "value": "library/alloc/src/string.rs"
       },
       "https://doc.rust-lang.org/nightly/alloc/string/",
-      "A UTF-8 encoded, growable string.\n\nThis module contains the [`String`] type, a trait for converting\n[`ToString`]s, and several error types that may result from working with\n[`String`]s.\n\n[`ToString`]: trait.ToString.html\n\n# Examples\n\nThere are multiple ways to create a new [`String`] from a string literal:\n\n```rust\nlet s = \"Hello\".to_string();\n\nlet s = String::from(\"world\");\nlet s: String = \"also this\".into();\n```\n\nYou can create a new [`String`] from an existing one by concatenating with\n`+`:\n\n[`String`]: struct.String.html\n\n```rust\nlet s = \"Hello\".to_string();\n\nlet message = s + \" world!\";\n```\n\nIf you have a vector of valid UTF-8 bytes, you can make a [`String`] out of\nit. You can do the reverse too.\n\n```rust\nlet sparkle_heart = vec![240, 159, 146, 150];\n\n// We know these bytes are valid, so we'll use `unwrap()`.\nlet sparkle_heart = String::from_utf8(sparkle_heart).unwrap();\n\nassert_eq!(\"💖\", sparkle_heart);\n\nlet bytes = sparkle_heart.into_bytes();\n\nassert_eq!(bytes, [240, 159, 146, 150]);\n```"
+      "A UTF-8 encoded, growable string.\n\nThis module contains the [`String`] type, a trait for converting\n[`ToString`]s, and several error types that may result from working with\n[`String`]s.\n\n# Examples\n\nThere are multiple ways to create a new [`String`] from a string literal:\n\n```rust\nlet s = \"Hello\".to_string();\n\nlet s = String::from(\"world\");\nlet s: String = \"also this\".into();\n```\n\nYou can create a new [`String`] from an existing one by concatenating with\n`+`:\n\n```rust\nlet s = \"Hello\".to_string();\n\nlet message = s + \" world!\";\n```\n\nIf you have a vector of valid UTF-8 bytes, you can make a [`String`] out of\nit. You can do the reverse too.\n\n```rust\nlet sparkle_heart = vec![240, 159, 146, 150];\n\n// We know these bytes are valid, so we'll use `unwrap()`.\nlet sparkle_heart = String::from_utf8(sparkle_heart).unwrap();\n\nassert_eq!(\"💖\", sparkle_heart);\n\nlet bytes = sparkle_heart.into_bytes();\n\nassert_eq!(bytes, [240, 159, 146, 150]);\n```"
     ]
   }
 }
\ No newline at end of file
diff --git a/tests/fixtures/hover/save_data/test_tooltip_std.rs.0015_025.json b/tests/fixtures/hover/save_data/test_tooltip_std.rs.0015_025.json
index c77b8a6811c..d535ad9099b 100644
--- a/tests/fixtures/hover/save_data/test_tooltip_std.rs.0015_025.json
+++ b/tests/fixtures/hover/save_data/test_tooltip_std.rs.0015_025.json
@@ -11,7 +11,7 @@
         "value": "pub trait ToString"
       },
       "https://doc.rust-lang.org/nightly/alloc/string/ToString.t.html",
-      "A trait for converting a value to a `String`.\n\nThis trait is automatically implemented for any type which implements the\n[`Display`] trait. As such, `ToString` shouldn't be implemented directly:\n[`Display`] should be implemented instead, and you get the `ToString`\nimplementation for free.\n\n[`Display`]: ../../std/fmt/trait.Display.html"
+      "A trait for converting a value to a `String`.\n\nThis trait is automatically implemented for any type which implements the\n[`Display`] trait. As such, `ToString` shouldn't be implemented directly:\n[`Display`] should be implemented instead, and you get the `ToString`\nimplementation for free.\n\n[`Display`]: fmt::Display"
     ]
   }
 }
\ No newline at end of file