diff --git a/src/testlib.rs b/src/testlib.rs
index 819bae3..a790b10 100644
--- a/src/testlib.rs
+++ b/src/testlib.rs
@@ -13,7 +13,7 @@ macro_rules! collection {
                         },
                         tracks: vec![
                             Track {
-                                id: TrackId{
+                                id: TrackId {
                                     number: 1,
                                     title: "track a.a.1".to_string(),
                                 },
@@ -24,7 +24,7 @@ macro_rules! collection {
                                 },
                             },
                             Track {
-                                id: TrackId{
+                                id: TrackId {
                                     number: 2,
                                     title: "track a.a.2".to_string(),
                                 },
@@ -38,7 +38,7 @@ macro_rules! collection {
                                 },
                             },
                             Track {
-                                id: TrackId{
+                                id: TrackId {
                                     number: 3,
                                     title: "track a.a.3".to_string(),
                                 },
@@ -57,7 +57,7 @@ macro_rules! collection {
                         },
                         tracks: vec![
                             Track {
-                                id: TrackId{
+                                id: TrackId {
                                     number: 1,
                                     title: "track a.b.1".to_string(),
                                 },
@@ -68,7 +68,7 @@ macro_rules! collection {
                                 },
                             },
                             Track {
-                                id: TrackId{
+                                id: TrackId {
                                     number: 2,
                                     title: "track a.b.2".to_string(),
                                 },
@@ -94,7 +94,7 @@ macro_rules! collection {
                         },
                         tracks: vec![
                             Track {
-                                id: TrackId{
+                                id: TrackId {
                                     number: 1,
                                     title: "track b.a.1".to_string(),
                                 },
@@ -105,7 +105,7 @@ macro_rules! collection {
                                 },
                             },
                             Track {
-                                id: TrackId{
+                                id: TrackId {
                                     number: 2,
                                     title: "track b.a.2".to_string(),
                                 },
@@ -127,7 +127,7 @@ macro_rules! collection {
                         },
                         tracks: vec![
                             Track {
-                                id: TrackId{
+                                id: TrackId {
                                     number: 1,
                                     title: "track b.b.1".to_string(),
                                 },
@@ -138,7 +138,7 @@ macro_rules! collection {
                                 },
                             },
                             Track {
-                                id: TrackId{
+                                id: TrackId {
                                     number: 2,
                                     title: "track b.b.2".to_string(),
                                 },
@@ -167,7 +167,7 @@ macro_rules! collection {
                         },
                         tracks: vec![
                             Track {
-                                id: TrackId{
+                                id: TrackId {
                                     number: 1,
                                     title: "track c.a.1".to_string(),
                                 },
@@ -178,7 +178,7 @@ macro_rules! collection {
                                 },
                             },
                             Track {
-                                id: TrackId{
+                                id: TrackId {
                                     number: 2,
                                     title: "track c.a.2".to_string(),
                                 },
@@ -200,7 +200,7 @@ macro_rules! collection {
                         },
                         tracks: vec![
                             Track {
-                                id: TrackId{
+                                id: TrackId {
                                     number: 1,
                                     title: "track c.b.1".to_string(),
                                 },
@@ -211,7 +211,7 @@ macro_rules! collection {
                                 },
                             },
                             Track {
-                                id: TrackId{
+                                id: TrackId {
                                     number: 2,
                                     title: "track c.b.2".to_string(),
                                 },
diff --git a/tests/lib.rs b/tests/lib.rs
index de4c371..4291501 100644
--- a/tests/lib.rs
+++ b/tests/lib.rs
@@ -50,7 +50,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 04,
                             title: String::from("Leshiy"),
                         },
@@ -61,7 +61,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 05,
                             title: String::from("Zakliatie"),
                         },
@@ -72,7 +72,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 06,
                             title: String::from("Predok"),
                         },
@@ -83,7 +83,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 07,
                             title: String::from("Nikogda"),
                         },
@@ -94,7 +94,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 08,
                             title: String::from("Tam za tumanami"),
                         },
@@ -105,7 +105,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 09,
                             title: String::from("Potomok"),
                         },
@@ -116,7 +116,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 10,
                             title: String::from("Slovo"),
                         },
@@ -127,7 +127,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 11,
                             title: String::from("Odna"),
                         },
@@ -138,7 +138,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 12,
                             title: String::from("Vo moiom sadochke…"),
                         },
@@ -149,7 +149,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 13,
                             title: String::from("Stenka na stenku"),
                         },
@@ -160,7 +160,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 14,
                             title: String::from("Zimushka"),
                         },
@@ -185,7 +185,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                     },
                     tracks: vec![
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 01,
                                 title: String::from("Samon"),
                             },
@@ -196,7 +196,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 02,
                                 title: String::from("Primordial Breath"),
                             },
@@ -207,7 +207,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 03,
                                 title: String::from("Inis Mona"),
                             },
@@ -218,7 +218,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 04,
                                 title: String::from("Gray Sublime Archon"),
                             },
@@ -229,7 +229,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 05,
                                 title: String::from("Anagantios"),
                             },
@@ -240,7 +240,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 06,
                                 title: String::from("Bloodstained Ground"),
                             },
@@ -251,7 +251,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 07,
                                 title: String::from("The Somber Lay"),
                             },
@@ -262,7 +262,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 08,
                                 title: String::from("Slanias Song"),
                             },
@@ -273,7 +273,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 09,
                                 title: String::from("Giamonios"),
                             },
@@ -284,7 +284,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 10,
                                 title: String::from("Tarvos"),
                             },
@@ -295,7 +295,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 11,
                                 title: String::from("Calling the Rain"),
                             },
@@ -306,7 +306,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 12,
                                 title: String::from("Elembivos"),
                             },
@@ -325,7 +325,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                     },
                     tracks: vec![
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 01,
                                 title: String::from("Verja Urit an Bitus"),
                             },
@@ -336,7 +336,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 02,
                                 title: String::from("Uis Elveti"),
                             },
@@ -347,7 +347,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 03,
                                 title: String::from("Ôrô"),
                             },
@@ -358,7 +358,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 04,
                                 title: String::from("Lament"),
                             },
@@ -369,7 +369,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 05,
                                 title: String::from("Druid"),
                             },
@@ -380,7 +380,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 06,
                                 title: String::from("Jêzaïg"),
                             },
@@ -405,7 +405,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                 },
                 tracks: vec![
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 01,
                             title: String::from("Intro = Chaos"),
                         },
@@ -416,7 +416,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 02,
                             title: String::from("Modlitwa"),
                         },
@@ -427,7 +427,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 03,
                             title: String::from("Długa droga z piekła"),
                         },
@@ -438,7 +438,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 04,
                             title: String::from("Synowie ognia"),
                         },
@@ -449,7 +449,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 05,
                             title: String::from("1902"),
                         },
@@ -460,7 +460,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 06,
                             title: String::from("Krew za krew"),
                         },
@@ -471,7 +471,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 07,
                             title: String::from("Kulminacja"),
                         },
@@ -482,7 +482,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 08,
                             title: String::from("Judasz"),
                         },
@@ -493,7 +493,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 09,
                             title: String::from("Więzy"),
                         },
@@ -504,7 +504,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 10,
                             title: String::from("Zagubione dusze"),
                         },
@@ -515,7 +515,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 11,
                             title: String::from("Linia życia"),
                         },
@@ -539,7 +539,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                 },
                 tracks: vec![
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 01,
                             title: String::from("Unbreakable"),
                         },
@@ -550,7 +550,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 02,
                             title: String::from("Guilt Trips and Sins"),
                         },
@@ -561,7 +561,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 03,
                             title: String::from("The Long Goodbye"),
                         },
@@ -572,7 +572,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 04,
                             title: String::from("Close Encounters"),
                         },
@@ -583,7 +583,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 05,
                             title: String::from("Paranoia"),
                         },
@@ -594,7 +594,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 06,
                             title: String::from("Let Me Out of Here"),
                         },
@@ -605,7 +605,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                         },
                     },
                     Track {
-                        id: TrackId{
+                        id: TrackId {
                             number: 07,
                             title: String::from("Leeches"),
                         },
@@ -630,7 +630,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                     },
                     tracks: vec![
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 01,
                                 title: String::from("Fight Fire with Fire"),
                             },
@@ -641,7 +641,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 02,
                                 title: String::from("Ride the Lightning"),
                             },
@@ -652,7 +652,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 03,
                                 title: String::from("For Whom the Bell Tolls"),
                             },
@@ -663,7 +663,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 04,
                                 title: String::from("Fade to Black"),
                             },
@@ -674,7 +674,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 05,
                                 title: String::from("Trapped under Ice"),
                             },
@@ -685,7 +685,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 06,
                                 title: String::from("Escape"),
                             },
@@ -696,7 +696,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 07,
                                 title: String::from("Creeping Death"),
                             },
@@ -707,7 +707,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 08,
                                 title: String::from("The Call of Ktulu"),
                             },
@@ -726,7 +726,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                     },
                     tracks: vec![
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 01,
                                 title: String::from("The Ecstasy of Gold"),
                             },
@@ -737,7 +737,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 02,
                                 title: String::from("The Call of Ktulu"),
                             },
@@ -748,7 +748,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 03,
                                 title: String::from("Master of Puppets"),
                             },
@@ -759,7 +759,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 04,
                                 title: String::from("Of Wolf and Man"),
                             },
@@ -770,7 +770,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 05,
                                 title: String::from("The Thing That Should Not Be"),
                             },
@@ -781,7 +781,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 06,
                                 title: String::from("Fuel"),
                             },
@@ -792,7 +792,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 07,
                                 title: String::from("The Memory Remains"),
                             },
@@ -803,7 +803,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 08,
                                 title: String::from("No Leaf Clover"),
                             },
@@ -814,7 +814,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 09,
                                 title: String::from("Hero of the Day"),
                             },
@@ -825,7 +825,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 10,
                                 title: String::from("Devil’s Dance"),
                             },
@@ -836,7 +836,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 11,
                                 title: String::from("Bleeding Me"),
                             },
@@ -847,7 +847,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 12,
                                 title: String::from("Nothing Else Matters"),
                             },
@@ -858,7 +858,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 13,
                                 title: String::from("Until It Sleeps"),
                             },
@@ -869,7 +869,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 14,
                                 title: String::from("For Whom the Bell Tolls"),
                             },
@@ -880,7 +880,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 15,
                                 title: String::from("−Human"),
                             },
@@ -891,7 +891,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 16,
                                 title: String::from("Wherever I May Roam"),
                             },
@@ -902,7 +902,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 17,
                                 title: String::from("Outlaw Torn"),
                             },
@@ -913,7 +913,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 18,
                                 title: String::from("Sad but True"),
                             },
@@ -924,7 +924,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 19,
                                 title: String::from("One"),
                             },
@@ -935,7 +935,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 20,
                                 title: String::from("Enter Sandman"),
                             },
@@ -946,7 +946,7 @@ static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| {
                             },
                         },
                         Track {
-                            id: TrackId{
+                            id: TrackId {
                                 number: 21,
                                 title: String::from("Battery"),
                             },