[Bug] Failing rbpf-tests about move HOT 4 CLOSED

It's a strange error. This is happening while rbpf-tests is running cargo (from the sbf toolchain) to build the move-native crate. move-native is a no_std crate, which means all its dependencies should be configured not to use the standard library, but this error from inside serde seems to be related to compiling support for the std Error trait. So something here is confused about the configuration probably.

I haven't seen this yet, but it could have happened after a dependency changed in the lockfile, in this case probably language/move-native/Cargo.lock, or it could be related to being on a different version of SBF tools, which I see has had a new release since I last ran these tests.

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It could be that after an upgrade of something cargo is confused by its own metadata. The build artifacts for this particular build are in language/tools/move-mv-llvm-compiler/tests/cargo-target-dir. Deleting that dir may solve the problem.

from move.

Removing language/tools/move-mv-llvm-compiler/tests/cargo-target-dir did not fix it.

Attached is the full error log for the following command:

$ export LLVM_SYS_150_PREFIX=$HOME/sbf-tools/llvm-project/build
$ export SBF_TOOLS_ROOT=$HOME/sbf-tools/releases/v1.32
$ cargo test
error.txt

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In the log output you posted the first error is:

building move-native runtime for sbf
   Compiling generic-array v0.14.6
   Compiling typenum v1.16.0
   Compiling keccak v0.1.3
   Compiling cfg-if v1.0.0
   Compiling serde v1.0.152
error[E0463]: can't find crate for `core`
  |
  = note: the `sbf-solana-solana` target may not be installed
  = help: consider downloading the target with `rustup target add sbf-solana-solana`
  = help: consider building the standard library from source with `cargo build -Zbuild-std`

The build is failing because rustc can't find the core library for the sbf-solana-solana target. This probably indicates something broken in the sbf tools installation. the sbf tools should have a rust/lib/rustlib/sbf-solana-solana/lib directory, and that directory should contain a file like libcore-0d7011e845091c1c.rlib

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