[INFO] fetching crate xscan-h2s 0.1.1...
[INFO] testing xscan-h2s-0.1.1 against 1.91.0 for beta-1.92-2
[INFO] extracting crate xscan-h2s 0.1.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate xscan-h2s 0.1.1
[INFO] finished tweaking crates.io crate xscan-h2s 0.1.1
[INFO] tweaked toml for crates.io crate xscan-h2s 0.1.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate xscan-h2s 0.1.1 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate xscan-h2s 0.1.1 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bitflags v2.9.2
[INFO] [stderr]   Downloaded nill v1.1.0
[INFO] [stderr]   Downloaded ptr_meta_derive v0.3.0
[INFO] [stderr]   Downloaded tonic-prost-build v0.14.1
[INFO] [stderr]   Downloaded thiserror v2.0.15
[INFO] [stderr]   Downloaded munge_macro v0.4.6
[INFO] [stderr]   Downloaded tonic-build v0.14.1
[INFO] [stderr]   Downloaded rancor v0.1.0
[INFO] [stderr]   Downloaded uuid v1.18.0
[INFO] [stderr]   Downloaded tonic v0.14.1
[INFO] [stderr]   Downloaded prettyplease v0.2.36
[INFO] [stderr]   Downloaded rkyv_derive v0.8.11
[INFO] [stderr]   Downloaded rkyv v0.8.11
[INFO] [stderr]   Downloaded pulldown-cmark v0.13.0
[INFO] [stderr]   Downloaded pulldown-cmark-to-cmark v21.0.0
[INFO] [stderr]   Downloaded io-uring v0.7.9
[INFO] [stderr]   Downloaded thiserror-impl v2.0.15
[INFO] [stderr]   Downloaded munge v0.4.6
[INFO] [stderr]   Downloaded ptr_meta v0.3.0
[INFO] [stderr]   Downloaded rend v0.5.2
[INFO] [stderr]   Downloaded tonic-web v0.14.1
[INFO] [stderr]   Downloaded xscan-h2c v0.1.1
[INFO] [stderr]   Downloaded xscan-lib v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4c6879b17397f6f83e70af02515f48673a5edeb6f0a68762e399950a27837b21
[INFO] running `Command { std: "docker" "start" "-a" "4c6879b17397f6f83e70af02515f48673a5edeb6f0a68762e399950a27837b21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c6879b17397f6f83e70af02515f48673a5edeb6f0a68762e399950a27837b21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c6879b17397f6f83e70af02515f48673a5edeb6f0a68762e399950a27837b21", kill_on_drop: false }`
[INFO] [stdout] 4c6879b17397f6f83e70af02515f48673a5edeb6f0a68762e399950a27837b21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd07d395539bb308bcc5fa039fb3445bca8822189004299a1f0e0ab118e796cc
[INFO] running `Command { std: "docker" "start" "-a" "cd07d395539bb308bcc5fa039fb3445bca8822189004299a1f0e0ab118e796cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling anyhow v1.0.99
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling bitflags v2.9.2
[INFO] [stderr]    Compiling pulldown-cmark v0.13.0
[INFO] [stderr]    Compiling prettyplease v0.2.36
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling unicase v2.8.1
[INFO] [stderr]    Compiling rustix v1.0.8
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling thiserror v2.0.15
[INFO] [stderr]    Compiling sync_wrapper v1.0.2
[INFO] [stderr]    Compiling http-body-util v0.1.3
[INFO] [stderr]    Compiling rend v0.5.2
[INFO] [stderr]    Compiling nill v1.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/nill-1.1.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_trait_impl)]
[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 `nill` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "cd07d395539bb308bcc5fa039fb3445bca8822189004299a1f0e0ab118e796cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd07d395539bb308bcc5fa039fb3445bca8822189004299a1f0e0ab118e796cc", kill_on_drop: false }`
[INFO] [stdout] cd07d395539bb308bcc5fa039fb3445bca8822189004299a1f0e0ab118e796cc