Revert "Bump indexmap from 1.9.3 to 2.0.1"

This reverts commit 81a69f845e.

Cargo.lock

@@ -421,7 +421,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "907076dfda823b0b36d2a1bb5f90c96660a5bbcd7729e10727f07858f22c4edc"
 dependencies = [
  "cfg-if",
- "hashbrown 0.12.3",
+ "hashbrown",
  "lock_api",
  "once_cell",
  "parking_lot_core",
@@ -479,12 +479,6 @@ dependencies = [
  "termcolor",
 ]
 
-[[package]]
-name = "equivalent"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
-
 [[package]]
 name = "errno"
 version = "0.2.8"
@@ -779,12 +773,6 @@ version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
 
-[[package]]
-name = "hashbrown"
-version = "0.14.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2c6201b9ff9fd90a5a3bac2e56a830d0caa509576f0e503818ee82c181b3437a"
-
 [[package]]
 name = "hermit-abi"
 version = "0.3.2"
@@ -833,12 +821,12 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "2.0.1"
+version = "1.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ad227c3af19d4914570ad36d30409928b75967c298feb9ea1969db3a610bb14e"
+checksum = "bd070e393353796e801d209ad339e89596eb4c8d430d18ede6a1cced8fafbd99"
 dependencies = [
- "equivalent",
- "hashbrown 0.14.0",
+ "autocfg",
+ "hashbrown",
 ]
 
 [[package]]

Cargo.toml

@@ -30,7 +30,7 @@ easy-cast = "0.5"
 filetreelist = { path = "./filetreelist", version = "0.5" }
 fuzzy-matcher = "0.3"
 gh-emoji = { version = "1.0", optional = true }
-indexmap = "2.0"
+indexmap = "1.9"
 itertools = "0.11"
 log = "0.4"
 notify = "5.1"