[INFO] fetching crate mirl 4.2.0...
[INFO] testing mirl-4.2.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate mirl 4.2.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate mirl 4.2.0
[INFO] finished tweaking crates.io crate mirl 4.2.0
[INFO] tweaked toml for crates.io crate mirl 4.2.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mirl 4.2.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mirl 4.2.0 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-ccc v0.4.0
[INFO] [stderr]   Downloaded core_maths v0.1.1
[INFO] [stderr]   Downloaded unicode-bidi-mirroring v0.4.0
[INFO] [stderr]   Downloaded fontconfig-parser v0.5.8
[INFO] [stderr]   Downloaded image-webp v0.2.3
[INFO] [stderr]   Downloaded macos-accessibility-client v0.0.1
[INFO] [stderr]   Downloaded x11 v2.21.0
[INFO] [stderr]   Downloaded readkey v0.2.2
[INFO] [stderr]   Downloaded minifb v0.28.0
[INFO] [stderr]   Downloaded fontdb v0.23.0
[INFO] [stderr]   Downloaded rustybuzz v0.20.1
[INFO] [stderr]   Downloaded zune-jpeg v0.4.19
[INFO] [stderr]   Downloaded readmouse v0.2.1
[INFO] [stderr]   Downloaded avif-serialize v0.8.5
[INFO] [stderr]   Downloaded memmap2 v0.9.7
[INFO] [stderr]   Downloaded sdl2 v0.35.2
[INFO] [stderr]   Downloaded ico v0.4.0
[INFO] [stderr]   Downloaded fontdue v0.9.3
[INFO] [stderr]   Downloaded sdl2-sys v0.35.2
[INFO] [stderr]   Downloaded device_query v4.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,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" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48a946c3f299dfceb2b72cec66ff77cff861a78aa0d1b5b5bb43bf3496b7fceb
[INFO] running `Command { std: "docker" "start" "-a" "48a946c3f299dfceb2b72cec66ff77cff861a78aa0d1b5b5bb43bf3496b7fceb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48a946c3f299dfceb2b72cec66ff77cff861a78aa0d1b5b5bb43bf3496b7fceb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48a946c3f299dfceb2b72cec66ff77cff861a78aa0d1b5b5bb43bf3496b7fceb", kill_on_drop: false }`
[INFO] [stdout] 48a946c3f299dfceb2b72cec66ff77cff861a78aa0d1b5b5bb43bf3496b7fceb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,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" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9a59410b6401552f29379d1ee5b2701dc6de96df9a3a14eddf22a60e8e22f72
[INFO] running `Command { std: "docker" "start" "-a" "b9a59410b6401552f29379d1ee5b2701dc6de96df9a3a14eddf22a60e8e22f72", kill_on_drop: false }`
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling mirl v4.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | #![feature(const_trait_impl)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | #![feature(const_ops)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mirl` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "b9a59410b6401552f29379d1ee5b2701dc6de96df9a3a14eddf22a60e8e22f72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9a59410b6401552f29379d1ee5b2701dc6de96df9a3a14eddf22a60e8e22f72", kill_on_drop: false }`
[INFO] [stdout] b9a59410b6401552f29379d1ee5b2701dc6de96df9a3a14eddf22a60e8e22f72