Auto merge of #12733 - tompscanlan:11616-document-timeout-behavior, r=epage

docs: warn about upload timeout

### What does this PR try to resolve?

Adds documentation missing from #11062 as noticed in #11616

### How should we test and review this PR?

editor review

Author: bors

src/doc/man/cargo-publish.md

@@ -22,8 +22,11 @@ following steps:
    - Checks the `package.publish` key in the manifest for restrictions on
      which registries you are allowed to publish to.
 2. Create a `.crate` file by following the steps in {{man "cargo-package" 1}}.
-3. Upload the crate to the registry. Note that the server will perform
-   additional checks on the crate.
+3. Upload the crate to the registry. The server will perform additional
+   checks on the crate. 
+4. The client will poll waiting for the package to appear in the index,
+   and may timeout. In that case, you will need to check for completion
+   manually. This timeout does not affect the upload.
 
 This command requires you to be authenticated with either the `--token` option
 or using {{man "cargo-login" 1}}.

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

@@ -18,8 +18,12 @@ DESCRIPTION
 
        2. Create a .crate file by following the steps in cargo-package(1).
 
-       3. Upload the crate to the registry. Note that the server will perform
-          additional checks on the crate.
+       3. Upload the crate to the registry. The server will perform additional
+          checks on the crate.
+
+       4. The client will poll waiting for the package to appear in the index,
+          and may timeout. In that case, you will need to check for completion
+          manually. This timeout does not affect the upload.
 
        This command requires you to be authenticated with either the --token
        option or using cargo-login(1).

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

@@ -19,8 +19,11 @@ following steps:
    - Checks the `package.publish` key in the manifest for restrictions on
      which registries you are allowed to publish to.
 2. Create a `.crate` file by following the steps in [cargo-package(1)](cargo-package.html).
-3. Upload the crate to the registry. Note that the server will perform
-   additional checks on the crate.
+3. Upload the crate to the registry. The server will perform additional
+   checks on the crate. 
+4. The client will poll waiting for the package to appear in the index,
+   and may timeout. In that case, you will need to check for completion
+   manually. This timeout does not affect the upload.
 
 This command requires you to be authenticated with either the `--token` option
 or using [cargo-login(1)](cargo-login.html).

src/etc/man/cargo-publish.1

@@ -27,8 +27,14 @@ which registries you are allowed to publish to.
 .RE
 .sp
 .RS 4
-\h'-04' 3.\h'+01'Upload the crate to the registry. Note that the server will perform
-additional checks on the crate.
+\h'-04' 3.\h'+01'Upload the crate to the registry. The server will perform additional
+checks on the crate. 
+.RE
+.sp
+.RS 4
+\h'-04' 4.\h'+01'The client will poll waiting for the package to appear in the index,
+and may timeout. In that case, you will need to check for completion
+manually. This timeout does not affect the upload.
 .RE
 .sp
 This command requires you to be authenticated with either the \fB\-\-token\fR option