substrate-node-template: first time install failed, error[E0282]: type annotations needed

Description

I did manage to install the node and run it together with the web front-end maybe 5 days ago. But when I started all over again I can’t get it compiled. I did to reinstall rust and de-brew dependency modules but all in vain. Also tried with rustc 1.46, restarted mac, reinstalled cmake, openssl… Attached is the log with the whole installation procedure. subrtrate-install.log

Steps to Reproduce

following step by step Create Your First Substrate Chain

Environment

• Operating system: MacOS, Kernel Version: Darwin 18.2.0
• Template version/tag: v2.0.0
• Rust version (run rustup show):

Default host: x86_64-apple-darwin
rustup home:  /Users/mario/.rustup

installed toolchains

stable-x86_64-apple-darwin (default)
nightly-x86_64-apple-darwin

active toolchain

stable-x86_64-apple-darwin (default)
rustc 1.47.0 (18bf6b4f0 2020-10-07)

Logs, Errors or Screenshots

...
   Compiling frame-support-procedural v2.0.0
   Compiling libp2p-core v0.22.1
error: failed to run custom build command for `node-template-runtime v2.0.0 (/Users/mario/projects/substrate-node-template/runtime)`

Caused by:
  process didn't exit successfully: `/Users/mario/projects/substrate-node-template/target/release/build/node-template-runtime-cae9ad6029c9f681/build-script-build` (exit code: 1)
  --- stdout
  Executing build command: "rustup" "run" "nightly" "cargo" "rustc" "--target=wasm32-unknown-unknown" "--manifest-path=/Users/mario/projects/substrate-node-template/target/release/wbuild/node-template-runtime/Cargo.toml" "--color=always" "--release"

  --- stderr
      Updating crates.io index
   Downloading crates ...
    Downloaded getrandom v0.1.15
    Downloaded substrate-wasm-builder v2.0.0

This error comes after random file and doesn’t look connected with libp2p-core v0.22.1 in this case. After continuing with compile it always breaks with following error:

...     
     Compiling sp-wasm-interface v2.0.0
     Compiling sp-arithmetic v2.0.0
     Compiling finality-grandpa v0.12.3
  error[E0282]: type annotations needed
      --> /Users/mario/.cargo/registry/src/github.com-1ecc6299db9ec823/sp-arithmetic-2.0.0/src/fixed_point.rs:541:9
       |
  541  |                   let accuracy = P::ACCURACY.saturated_into();
       |                       ^^^^^^^^ consider giving `accuracy` a type
  ...
  1595 | / implement_fixed!(
  1596 | |     FixedI64,
  1597 | |     test_fixed_i64,
  1598 | |     i64,
  ...    |
  1601 | |     "_Fixed Point 64 bits signed, range = [-9223372036.854775808, 9223372036.854775807]_",
  1602 | | );
       | |__- in this macro invocation
       |
       = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

Additional Information