Skip serializing the dirty flag if false.

src/cargo/ops/cargo_package.rs

@@ -81,6 +81,7 @@ struct VcsInfo {
 struct GitVcsInfo {
     sha1: String,
     /// Indicate whether or not the Git worktree is dirty.
+    #[serde(skip_serializing_if = "std::ops::Not::not")]
     dirty: bool,
 }
 

src/doc/man/cargo-package.md

@@ -31,7 +31,7 @@ steps:
       executable binary or example target. {{man "cargo-install" 1}} will use the
       packaged lock file if the `--locked` flag is used.
     - A `.cargo_vcs_info.json` file is included that contains information
-      about the current VCS checkout hash if available, and whether or not the
+      about the current VCS checkout hash if available, as well as a flag if the
       worktree is dirty.
 3. Extract the `.crate` file and build it to verify it can build.
     - This will rebuild your package from scratch to ensure that it can be
@@ -59,7 +59,7 @@ Will generate a `.cargo_vcs_info.json` in the following format
 }
 ```
 
-`dirty` indicates whether or not the Git worktree was dirty when the package
+`dirty` indicates that the Git worktree was dirty when the package
 was built.
 
 `path_in_vcs` will be set to a repo-relative path for packages

src/doc/man/generated_txt/cargo-package.txt

@@ -29,8 +29,8 @@ DESCRIPTION
              packaged lock file if the --locked flag is used.
 
           o  A .cargo_vcs_info.json file is included that contains information
-             about the current VCS checkout hash if available, and whether or
-             not the worktree is dirty.
+             about the current VCS checkout hash if available, as well as a
+             flag if the worktree is dirty.
 
        3. Extract the .crate file and build it to verify it can build.
           o  This will rebuild your package from scratch to ensure that it can
@@ -57,8 +57,8 @@ DESCRIPTION
             "path_in_vcs": ""
            }
 
-       dirty indicates whether or not the Git worktree was dirty when the
-       package was built.
+       dirty indicates that the Git worktree was dirty when the package was
+       built.
 
        path_in_vcs will be set to a repo-relative path for packages in
        subdirectories of the version control repository.

src/doc/src/commands/cargo-package.md

@@ -26,7 +26,7 @@ steps:
       executable binary or example target. [cargo-install(1)](cargo-install.html) will use the
       packaged lock file if the `--locked` flag is used.
     - A `.cargo_vcs_info.json` file is included that contains information
-      about the current VCS checkout hash if available, and whether or not the
+      about the current VCS checkout hash if available, as well as a flag if the
       worktree is dirty.
 3. Extract the `.crate` file and build it to verify it can build.
     - This will rebuild your package from scratch to ensure that it can be
@@ -54,7 +54,7 @@ Will generate a `.cargo_vcs_info.json` in the following format
 }
 ```
 
-`dirty` indicates whether or not the Git worktree was dirty when the package
+`dirty` indicates that the Git worktree was dirty when the package
 was built.
 
 `path_in_vcs` will be set to a repo-relative path for packages

src/etc/man/cargo-package.1

@@ -43,7 +43,7 @@ packaged lock file if the \fB\-\-locked\fR flag is used.
 .sp
 .RS 4
 \h'-04'\(bu\h'+02'A \fB\&.cargo_vcs_info.json\fR file is included that contains information
-about the current VCS checkout hash if available, and whether or not the
+about the current VCS checkout hash if available, as well as a flag if the
 worktree is dirty.
 .RE
 .RE
@@ -82,7 +82,7 @@ Will generate a \fB\&.cargo_vcs_info.json\fR in the following format
 .fi
 .RE
 .sp
-\fBdirty\fR indicates whether or not the Git worktree was dirty when the package
+\fBdirty\fR indicates that the Git worktree was dirty when the package
 was built.
 .sp
 \fBpath_in_vcs\fR will be set to a repo\-relative path for packages

tests/testsuite/package.rs

@@ -189,8 +189,7 @@ See https://doc.rust-lang.org/cargo/reference/manifest.html#package-metadata for
     let vcs_contents = format!(
         r#"{{
   "git": {{
-    "sha1": "{}",
-    "dirty": false
+    "sha1": "{}"
   }},
   "path_in_vcs": ""
 }}
@@ -231,8 +230,7 @@ See https://doc.rust-lang.org/cargo/reference/manifest.html#package-metadata for
     let vcs_contents = format!(
         r#"{{
   "git": {{
-    "sha1": "{}",
-    "dirty": false
+    "sha1": "{}"
   }},
   "path_in_vcs": "a/a"
 }}
@@ -1272,8 +1270,7 @@ fn issue_13695_allowing_dirty_vcs_info_but_clean() {
             ".cargo_vcs_info.json",
             r#"{
   "git": {
-    "sha1": "[..]",
-    "dirty": false
+    "sha1": "[..]"
   },
   "path_in_vcs": ""
 }"#,