note why fallible-iterator is a dependency

`fallible-iterator` doesn't need to be a dependency, it is pulled in by
`gimli/std` which can't be fixed without rust-lang/cargo#8832.

Signed-off-by: David Wood <[email protected]>

Author: davidtwco

thorin-bin/Cargo.toml

@@ -11,14 +11,18 @@ edition = "2021"
 thorin = { path = "../thorin" }
 
 memmap2 = "0.5.0"
-object = { version  = "0.27.1", features = [ "archive", "read", "write", "compression" ] }
 structopt = "0.3.25"
 thiserror = "1.0.30"
 tracing = "0.1.29"
 tracing-subscriber = { version = "0.2.25", features = [ "env-filter" ] }
 tracing-tree = "0.1.10"
 typed-arena = "2.0.1"
 
+[dependencies.object]
+version  = "0.27.1"
+default-features = false
+features = [ "archive", "read", "write", "compression" ]
+
 [[bin]]
 name = "thorin"
 path = "src/main.rs"

thorin/Cargo.toml

@@ -8,7 +8,17 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-gimli = "0.26.1"
 indexmap = "1.7.0"
-object = { version  = "0.27.1", features = [ "archive", "read", "write", "compression" ] }
 tracing = "0.1.29"
+
+[dependencies.gimli]
+version  = "0.26.1"
+default-features = false
+# `gimli/std` pulls in `fallible-iterator` which we don't use, but can't opt out of, because of
+# cargo#8832.
+features = [ "read", "write", "std" ]
+
+[dependencies.object]
+version  = "0.27.1"
+default-features = false
+features = [ "archive", "read", "write", "compression" ]