This happens when those files are not made yet (whitelist.txt banned-players.txt etc.. etc..):

[18:16:57] [Server thread/INFO]: Starting minecraft server version 14w10b
[18:16:57] [Server thread/INFO]: Loading properties
[18:16:57] [Server thread/WARN]: server.properties does not exist
[18:16:57] [Server thread/INFO]: Generating new properties file
[18:16:57] [Server thread/INFO]: Default game type: SURVIVAL
[18:16:57] [Server thread/INFO]: Generating keypair
[18:16:58] [Server thread/INFO]: Starting Minecraft server on *:25565
[18:16:58] [Server thread/WARN]: Failed to load user banlist:
java.io.FileNotFoundException: banned-players.json (The system cannot find the file specified)
at java.io.FileInputStream.open(Native Method) ~[?:1.7.0_60-ea]
at java.io.FileInputStream.<init>(Unknown Source) ~[?:1.7.0_60-ea]
at com.google.common.io.Files.newReader(Files.java:86) ~[minecraft_server.14w10b.jar:?]
at pq.g(SourceFile:124) ~[minecraft_server.14w10b.jar:?]
at mx.z(SourceFile:99) [minecraft_server.14w10b.jar:?]
at mx.<init>(SourceFile:25) [minecraft_server.14w10b.jar:?]
at my.g(SourceFile:152) [minecraft_server.14w10b.jar:?]
at net.minecraft.server.MinecraftServer.run(SourceFile:367) [minecraft_server.14w10b.jar:?]
at mp.run(SourceFile:667) [minecraft_server.14w10b.jar:?]
[18:16:58] [Server thread/WARN]: Failed to load ip banlist:
java.io.FileNotFoundException: banned-ips.json (The system cannot find the file specified)
at java.io.FileInputStream.open(Native Method) ~[?:1.7.0_60-ea]
at java.io.FileInputStream.<init>(Unknown Source) ~[?:1.7.0_60-ea]
at com.google.common.io.Files.newReader(Files.java:86) ~[minecraft_server.14w10b.jar:?]
at pq.g(SourceFile:124) ~[minecraft_server.14w10b.jar:?]
at mx.y(SourceFile:91) [minecraft_server.14w10b.jar:?]
at mx.<init>(SourceFile:27) [minecraft_server.14w10b.jar:?]
at my.g(SourceFile:152) [minecraft_server.14w10b.jar:?]
at net.minecraft.server.MinecraftServer.run(SourceFile:367) [minecraft_server.14w10b.jar:?]
at mp.run(SourceFile:667) [minecraft_server.14w10b.jar:?]
[18:16:58] [Server thread/WARN]: Failed to load operators list:
java.io.FileNotFoundException: ops.json (The system cannot find the file specified)
at java.io.FileInputStream.open(Native Method) ~[?:1.7.0_60-ea]
at java.io.FileInputStream.<init>(Unknown Source) ~[?:1.7.0_60-ea]
at com.google.common.io.Files.newReader(Files.java:86) ~[minecraft_server.14w10b.jar:?]
at pq.g(SourceFile:124) ~[minecraft_server.14w10b.jar:?]
at mx.A(SourceFile:107) [minecraft_server.14w10b.jar:?]
at mx.<init>(SourceFile:29) [minecraft_server.14w10b.jar:?]
at my.g(SourceFile:152) [minecraft_server.14w10b.jar:?]
at net.minecraft.server.MinecraftServer.run(SourceFile:367) [minecraft_server.14w10b.jar:?]
at mp.run(SourceFile:667) [minecraft_server.14w10b.jar:?]
[18:16:58] [Server thread/WARN]: Failed to load white-list:
java.io.FileNotFoundException: whitelist.json (The system cannot find the file specified)
at java.io.FileInputStream.open(Native Method) ~[?:1.7.0_60-ea]
at java.io.FileInputStream.<init>(Unknown Source) ~[?:1.7.0_60-ea]
at com.google.common.io.Files.newReader(Files.java:86) ~[minecraft_server.14w10b.jar:?]
at pq.g(SourceFile:124) ~[minecraft_server.14w10b.jar:?]
at mx.C(SourceFile:123) [minecraft_server.14w10b.jar:?]
at mx.<init>(SourceFile:30) [minecraft_server.14w10b.jar:?]
at my.g(SourceFile:152) [minecraft_server.14w10b.jar:?]
at net.minecraft.server.MinecraftServer.run(SourceFile:367) [minecraft_server.14w10b.jar:?]
at mp.run(SourceFile:667) [minecraft_server.14w10b.jar:?]
[18:16:58] [Server thread/INFO]: Preparing level "world"
[18:16:58] [Server thread/INFO]: Preparing start region for level 0
[18:16:59] [Server thread/INFO]: Preparing spawn area: 8%
[18:17:00] [Server thread/INFO]: Preparing spawn area: 17%
[18:17:01] [Server thread/INFO]: Preparing spawn area: 30%
[18:17:02] [Server thread/INFO]: Preparing spawn area: 42%
[18:17:03] [Server thread/INFO]: Preparing spawn area: 56%
[18:17:04] [Server thread/INFO]: Preparing spawn area: 67%
[18:17:05] [Server thread/INFO]: Preparing spawn area: 80%
[18:17:06] [Server thread/INFO]: Preparing spawn area: 93%
[18:17:07] [Server thread/INFO]: Done (8.870s)! For help, type "help" or "?"