GeezerVison

# Check the current imports at lines 20-23
sed -n '15,30p' crates/vm/src/stdlib/thread.rs

# Search for Clippy lint allow/deny configuration
rg -n 'allow|deny|warn' crates/vm/src/stdlib/thread.rs | head -20

# Check if there's a clippy.toml or Cargo.toml with lint configuration
find . -name "clippy.toml" -o -name "Cargo.toml" | grep -E "(^./Cargo.toml|clippy)" | head -5

# Check for Clippy lint configuration in the workspace Cargo.toml
rg -A 20 '\[lints\]' crates/vm/Cargo.toml

# Check the workspace Cargo.toml for lint configuration
rg -A 50 '\[lints\]' Cargo.toml

# Check for alloc_instead_of_core and std_instead_of_alloc lint settings
rg 'alloc_instead_of_core|std_instead_of_alloc' Cargo.toml

# Examine what fmt is actually used for in the file
rg -n 'fmt::' crates/vm/src/stdlib/thread.rs | head -20

# Double-check the full [lints] section to understand the context
sed -n '/\[lints\]/,/^\[/p' Cargo.toml | head -50

# Verify this is the workspace lints
head -20 Cargo.toml

# Find the workspace Cargo.toml and check the [lints] section
find . -name "Cargo.toml" -type f | xargs grep -l "workspace = true" | head -1

# Look for [lints] in the root Cargo.toml
rg -B 5 -A 20 'alloc_instead_of_core' .

# Also check if alloc::fmt is re-exported from core::fmt
python3 <<'EOF'
# Verify that alloc::fmt re-exports from core::fmt
# This is Rust standard library fact-checking
print("In Rust standard library:")
print("- alloc::fmt re-exports core::fmt and adds format! macro")
print("- core::fmt contains: Debug, Formatter, Result, etc.")
print("- alloc_instead_of_core lint warns when using alloc for types from core")
print("- std_instead_of_alloc lint warns when using std for types from alloc")
print("\nFor fmt::Debug, fmt::Formatter, fmt::Result -> these are core::fmt types")
print("Using alloc::fmt for these would trigger alloc_instead_of_core lint")
EOF

-use alloc::{
-    fmt,
-    sync::{Arc, Weak},
-};
+use alloc::sync::{Arc, Weak};
+use core::fmt;

In `@crates/vm/src/stdlib/thread.rs` around lines 20 - 23, The import is pulling
fmt from alloc which triggers the alloc_instead_of_core lint; change the use to
import fmt from core (so types like fmt::Debug, fmt::Formatter, fmt::Result come
from core::fmt) while keeping sync::{Arc, Weak} from alloc; update the use
statement that currently reads use alloc::{ fmt, sync::{Arc, Weak}, }; to import
core::fmt instead and leave Arc and Weak unchanged, and ensure any references to
fmt types (Debug, Formatter, Result) remain correct.