[INFO] fetching crate lead_lang_interpreter 2025.6.0...
[INFO] testing lead_lang_interpreter-2025.6.0 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate lead_lang_interpreter 2025.6.0 into /workspace/builds/worker-7-tc1/source
[INFO] removed /workspace/builds/worker-7-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate lead_lang_interpreter 2025.6.0
[INFO] finished tweaking crates.io crate lead_lang_interpreter 2025.6.0
[INFO] tweaked toml for crates.io crate lead_lang_interpreter 2025.6.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate lead_lang_interpreter 2025.6.0 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate lead_lang_interpreter 2025.6.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lealang_chalk_rs v1.2.1
[INFO] [stderr]   Downloaded windows v0.61.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 5b052bcabd2889787cb201df04e8a5a5908bcf6b28907f0674289c028c79a6cb
[INFO] running `Command { std: "docker" "start" "5b052bcabd2889787cb201df04e8a5a5908bcf6b28907f0674289c028c79a6cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b052bcabd2889787cb201df04e8a5a5908bcf6b28907f0674289c028c79a6cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "5b052bcabd2889787cb201df04e8a5a5908bcf6b28907f0674289c028c79a6cb" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b052bcabd2889787cb201df04e8a5a5908bcf6b28907f0674289c028c79a6cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "5b052bcabd2889787cb201df04e8a5a5908bcf6b28907f0674289c028c79a6cb" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling siphasher v1.0.1
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling paste v1.0.15
[INFO] [stderr]    Compiling lealang_chalk_rs v1.2.1
[INFO] [stderr]    Compiling tokio v1.45.1
[INFO] [stderr]    Compiling phf_shared v0.11.3
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling phf_generator v0.11.3
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling phf_macros v0.11.3
[INFO] [stderr]    Compiling phf v0.11.3
[INFO] [stderr]    Compiling lead_lang_interpreter v2025.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(fn_traits)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature `concat_idents` has been removed
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(concat_idents)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in 1.90.0; see <https://github.com/rust-lang/rust/issues/29599#issuecomment-2986866250> for more information
[INFO] [stdout]   = note: Replaced by the macro_metavar_expr_concat feature
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lead_lang_interpreter` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "5b052bcabd2889787cb201df04e8a5a5908bcf6b28907f0674289c028c79a6cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b052bcabd2889787cb201df04e8a5a5908bcf6b28907f0674289c028c79a6cb", kill_on_drop: false }`
[INFO] [stdout] 5b052bcabd2889787cb201df04e8a5a5908bcf6b28907f0674289c028c79a6cb
