Use crate_name() on the library target, update tests.

src/cargo/ops/tree/format/mod.rs

@@ -108,7 +108,7 @@ impl<'a> fmt::Display for Display<'a> {
                                 .iter()
                                 .find(|target| target.is_lib())
                             {
-                                write!(fmt, "{}", target.name())?;
+                                write!(fmt, "{}", target.crate_name())?;
                             }
                         }
                     }

src/doc/man/cargo-tree.md

@@ -145,7 +145,7 @@ strings will be replaced with the corresponding value:
 - `{l}` — The package license.
 - `{r}` — The package repository URL.
 - `{f}` — Comma-separated list of package features that are enabled.
-- `{lib}` — The name of the package's library.
+- `{lib}` — The name, as used in a `use` statement, of the package's library.
 {{/option}}
 
 {{#option "`--prefix` _prefix_" }}

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

@@ -138,7 +138,8 @@ OPTIONS
            o  {f} — Comma-separated list of package features that are
               enabled.
 
-           o  {lib} — The name of the package's library.
+           o  {lib} — The name, as used in a use statement, of the package's
+              library.
 
        --prefix prefix
            Sets how each line is displayed. The prefix value can be one of:

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

@@ -145,7 +145,7 @@ strings will be replaced with the corresponding value:</p>
 <li><code>{l}</code> — The package license.</li>
 <li><code>{r}</code> — The package repository URL.</li>
 <li><code>{f}</code> — Comma-separated list of package features that are enabled.</li>
-<li><code>{lib}</code> — The name of the package's library.</li>
+<li><code>{lib}</code> — The name, as used in a <code>use</code> statement, of the package's library.</li>
 </ul></dd>
 
 

src/etc/man/cargo-tree.1

@@ -188,7 +188,7 @@ strings will be replaced with the corresponding value:
 .RE
 .sp
 .RS 4
-\h'-04'\(bu\h'+02'\fB{lib}\fR \[em] The name of the package's library.
+\h'-04'\(bu\h'+02'\fB{lib}\fR \[em] The name, as used in a \fBuse\fR statement, of the package's library.
 .RE
 .RE
 .sp

tests/testsuite/tree.rs

@@ -1009,6 +1009,7 @@ foo v0.1.0 ([..]/foo)
 #[cargo_test]
 fn format() {
     Package::new("dep", "1.0.0").publish();
+    Package::new("other-dep", "1.0.0").publish();
 
     Package::new("dep_that_is_awesome", "1.0.0")
         .file(
@@ -1037,15 +1038,17 @@ fn format() {
 
             [dependencies]
             dep = {version="1.0", optional=true}
+            other-dep = {version="1.0", optional=true}
             dep_that_is_awesome = {version="1.0", optional=true}
 
+
             [features]
             default = ["foo"]
             foo = ["bar"]
             bar = []
             "#,
         )
-        .file("src/lib.rs", "")
+        .file("src/main.rs", "")
         .build();
 
     p.cargo("tree --format <<<{p}>>>")
@@ -1082,20 +1085,21 @@ Caused by:
         .arg("{p} [{f}]")
         .with_stdout(
             "\
-foo v0.1.0 ([..]/foo) [bar,default,dep,dep_that_is_awesome,foo]
+foo v0.1.0 ([..]/foo) [bar,default,dep,dep_that_is_awesome,foo,other-dep]
 ├── dep v1.0.0 []
-└── dep_that_is_awesome v1.0.0 []
+├── dep_that_is_awesome v1.0.0 []
+└── other-dep v1.0.0 []
 ",
         )
         .run();
 
     p.cargo("tree")
-        .arg("--features=dep_that_is_awesome")
+        .arg("--features=other-dep,dep_that_is_awesome")
         .arg("--format={lib}")
         .with_stdout(
-            "\
-foo
-└── awesome_dep
+            "
+├── awesome_dep
+└── other_dep
 ",
         )
         .run();