[src/03-setup] Failed to flash (Microbit 1.5)

[callmephilip]

Host machine: MacOS Big Sur 11.3 Target: Microbit v 1.5

Running cargo embed --target thumbv6m-none-eabi produces the following:

Compiling semver-parser v0.7.0
   Compiling proc-macro2 v1.0.36
   Compiling unicode-xid v0.2.2
   Compiling nb v1.0.0
   Compiling cortex-m v0.7.4
   Compiling vcell v0.1.3
   Compiling void v1.0.2
   Compiling syn v1.0.85
   Compiling cortex-m-rt v0.7.1
   Compiling bitfield v0.13.2
   Compiling ufmt-write v0.1.0
   Compiling rtt-check v0.1.0 (/Users/philip/projects/discovery/microbit/src/03-setup)
   Compiling volatile-register v0.2.1
   Compiling nb v0.1.3
   Compiling semver v0.9.0
   Compiling embedded-hal v0.2.6
   Compiling rustc_version v0.2.3
   Compiling bare-metal v0.2.5
   Compiling quote v1.0.14
   Compiling rtt-target v0.3.1
   Compiling panic-rtt-target v0.1.2
   Compiling cortex-m-rt-macros v0.7.0
    Finished dev [unoptimized + debuginfo] target(s) in 12.07s
      Config default
      Target /Users/philip/projects/discovery/microbit/target/thumbv6m-none-eabi/debug/rtt-check
     Erasing sectors ✔ [00:00:00] [#################################################################################################################] 13.00KiB/13.00KiB @ 11.28KiB/s (eta 0s )
 Programming pages   ✔ [00:00:00] [##################-----------------------------------------------------------------------------------------------]  2.00KiB/13.00KiB @  1.91KiB/s (eta 0s )
       Error failed to flash /Users/philip/projects/discovery/microbit/target/thumbv6m-none-eabi/debug/rtt-check
             
             Caused by:
                 0: Error while flashing
                 1: The execution of 'program_page' failed with code 1. This might indicate a problem with the flash algorithm.