Something is going wrong with miri in nightly-2026-02-12.
# Cargo.toml
[package]
name = "repro"
edition = "2024"
publish = false
// src/main.rs
fn main() {}$ cargo clean && cargo +nightly-2026-02-12 miri run
Compiling repro v0.0.0
error: failed to run custom build command for `repro v0.0.0`
Caused by:
process didn't exit successfully: `$RUSTUP_HOME/toolchains/nightly-2026-02-12-x86_64-unknown-linux-gnu/bin/cargo-miri runner target/miri/debug/build/repro-e8018e58e4b6ef17/build-script-build` (exit status: 1)
--- stderr
fatal error: file "target/miri/debug/build/repro-e8018e58e4b6ef17/build-script-build" contains outdated or invalid JSON; try `cargo clean`
Something is going wrong with miri in nightly-2026-02-12.