range start index 1 out of range for slice of length 0

[wyylg]

I found a crash during my trial of "globs", and repeated the last operation and it kept crashing.

---

• Report

name = "rustic-rs"
operating_system = "Windows 10.0.19045 (Windows 10 Pro) [64-bit]"
crate_version = "0.9.1"
explanation = '''
Panic occurred in file 'C:\Users\runneradmin\.cargo\registry\src\index.crates.io-6f17d22bba15001f\rustic_core-0.5.1\src\repofile\snapshotfile.rs' at line 1199
'''
cause = "range start index 1 out of range for slice of length 0"
method = "Panic"
backtrace = """

   0: 0x7ff70b27e2de - <unresolved>
   1: 0x7ff70ad0ebef - <unresolved>
   2: 0x7ff70a3d7609 - <unresolved>
   3: 0x7ff70a3d7609 - <unresolved>
   4: 0x7ff70b0398c9 - <unresolved>
   5: 0x7ff70b0374b9 - <unresolved>
   6: 0x7ff70b10518d - <unresolved>
   7: 0x7ff70ad47958 - <unresolved>
   8: 0x7ff70b01b625 - <unresolved>
   9: 0x7ff70b01b32c - <unresolved>
  10: 0x7ff70a2eca99 - <unresolved>
  11: 0x7ff70a2ef7ca - <unresolved>
  12: 0x7ff70a2f5189 - <unresolved>
  13: 0x7ff70a2f03a6 - <unresolved>
  14: 0x7ff70a2f5201 - <unresolved>
  15: 0x7ff70b278784 - <unresolved>
  16: 0x7ffcd56e7374 - BaseThreadInitThunk
  17: 0x7ffcd5efcc91 - RtlUserThreadStart"""

• Final operation

  PS D:\XX\rustic> rustic backup
  [00:00:00] reading index...               ████████████████████████████████████████          3/3
      Well, this is embarrassing.
  

• Configuration
  Part of the configuration file (Some characters are anonymous).

  [global]
  log-file = 'D:\XX\XX\XX\rustic.log'
  
  [repository]
  repository = 'F:\XX\rustic-repo'
  password-file = 'F:\XX\XX\XX.XX'
  no-cache = true
  
  [backup]
  one-file-system = true
  
  [[backup.snapshots]]
  sources = [
    # 'X:\XX-X\XX\XX',
    # 'X:\XX-X\XX\XX',
    ]
  tags = ['X', 'XXX-XXXX', 'XX']
  
  [[backup.snapshots]]
  sources = [
    'D:\XX\XX\XX\XX',
    # 'X:\XX\XX\XX-XX\XX\XX',
    # '%APPDATA%\XX-XX',
    ]
  globs = [
    '.XX', '.XX',
    '!/XX/XX/XX/XX/XX', '!D/XX/XX/XX/XX/XX',
    # '!C:\Users\X\AppData\Roaming\XX\XX\XX\XX.XX-XX\XX-XX','!C:\Users\X\AppData\Roaming\XX\XX\XX\XX.XX-XX\XX',
    # '!C:\Users\X\AppData\Roaming\XX',
    ]
  tags = ['X', 'XXX-XXXXXX', 'XX']