Use of older toolchain versions is highly problematic if workspace default is set to nightly

[vrurg]

Describe The Bug

If a workspace is defaults to nightly (rustup override set nightly) then cargo creates v4 Cargo.lock. But when a task has its toolchain set to some older version and it's executing cargo then the following happens:

[cargo-make] INFO - makers 0.37.23
[cargo-make] INFO -
[cargo-make] INFO - Build File: Makefile.toml
[cargo-make] INFO - Task: bugtest
[cargo-make] INFO - Profile: development
[cargo-make] INFO - Execute Command: "rustup" "run" "1.77" "cargo" "test"
error: failed to parse lock file at: /[...]/Cargo.lock

Caused by:
  lock file version `4` was found, but this version of Cargo does not understand this lock file, perhaps Cargo needs to be updated?
Error while executing command, exit code: 101

To Reproduce

[tasks.bugtest]
    args      = ["test"]
    command   = "cargo"
    toolchain = "1.77"