[INFO] fetching crate xscan-w2c 0.1.1...
[INFO] testing xscan-w2c-0.1.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate xscan-w2c 0.1.1 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate xscan-w2c 0.1.1
[INFO] finished tweaking crates.io crate xscan-w2c 0.1.1
[INFO] tweaked toml for crates.io crate xscan-w2c 0.1.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate xscan-w2c 0.1.1 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 xscan-w2c 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded xscan-lib v0.1.1
[INFO] [stderr]   Downloaded minicov v0.3.7
[INFO] [stderr]   Downloaded wasm-bindgen-test-macro v0.3.50
[INFO] [stderr]   Downloaded tracing-browser-subscriber v0.2.0
[INFO] [stderr]   Downloaded thiserror v2.0.15
[INFO] [stderr]   Downloaded nill v1.1.0
[INFO] [stderr]   Downloaded gloo-utils v0.2.0
[INFO] [stderr]   Downloaded serde_json v1.0.142
[INFO] [stderr]   Downloaded unicase v2.8.1
[INFO] [stderr]   Downloaded tracing-subscriber v0.3.19
[INFO] [stderr]   Downloaded pulldown-cmark-to-cmark v21.0.0
[INFO] [stderr]   Downloaded prost-types v0.14.1
[INFO] [stderr]   Downloaded tempfile v3.20.0
[INFO] [stderr]   Downloaded tonic v0.14.1
[INFO] [stderr]   Downloaded pulldown-cmark v0.13.0
[INFO] [stderr]   Downloaded pin-project-internal v1.1.10
[INFO] [stderr]   Downloaded bitflags v2.9.2
[INFO] [stderr]   Downloaded xscan-h2c v0.1.1
[INFO] [stderr]   Downloaded gloo-net v0.5.0
[INFO] [stderr]   Downloaded wasm-streams v0.4.2
[INFO] [stderr]   Downloaded console_error_panic_hook v0.1.7
[INFO] [stderr]   Downloaded wasi v0.14.2+wasi-0.2.4
[INFO] [stderr]   Downloaded http v0.2.12
[INFO] [stderr]   Downloaded io-uring v0.7.9
[INFO] [stderr]   Downloaded gloo v0.11.0
[INFO] [stderr]   Downloaded rkyv v0.8.11
[INFO] [stderr]   Downloaded rend v0.5.2
[INFO] [stderr]   Downloaded rkyv_derive v0.8.11
[INFO] [stderr]   Downloaded tinyvec v1.9.0
[INFO] [stderr]   Downloaded prost-build v0.14.1
[INFO] [stderr]   Downloaded prost-derive v0.14.1
[INFO] [stderr]   Downloaded errno v0.3.13
[INFO] [stderr]   Downloaded tonic-prost-build v0.14.1
[INFO] [stderr]   Downloaded http-body-util v0.1.3
[INFO] [stderr]   Downloaded munge_macro v0.4.6
[INFO] [stderr]   Downloaded ptr_meta_derive v0.3.0
[INFO] [stderr]   Downloaded ptr_meta v0.3.0
[INFO] [stderr]   Downloaded rancor v0.1.0
[INFO] [stderr]   Downloaded rustix v1.0.8
[INFO] [stderr]   Downloaded prost v0.14.1
[INFO] [stderr]   Downloaded petgraph v0.7.1
[INFO] [stderr]   Downloaded tonic-web v0.14.1
[INFO] [stderr]   Downloaded tonic-build v0.14.1
[INFO] [stderr]   Downloaded async-trait v0.1.89
[INFO] [stderr]   Downloaded pin-project v1.1.10
[INFO] [stderr]   Downloaded tokio-stream v0.1.17
[INFO] [stderr]   Downloaded thiserror-impl v2.0.15
[INFO] [stderr]   Downloaded cc v1.2.33
[INFO] [stderr]   Downloaded munge v0.4.6
[INFO] [stderr]   Downloaded fixedbitset v0.5.7
[INFO] [stderr]   Downloaded wit-bindgen-rt v0.39.0
[INFO] [stderr]   Downloaded wasm-bindgen-test v0.3.50
[INFO] [stderr]   Downloaded linux-raw-sys v0.9.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] c7166b529846ae3e80140a19b123ab00836b61eb21012208dc58d356b1f41a79
[INFO] running `Command { std: "docker" "start" "-a" "c7166b529846ae3e80140a19b123ab00836b61eb21012208dc58d356b1f41a79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7166b529846ae3e80140a19b123ab00836b61eb21012208dc58d356b1f41a79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7166b529846ae3e80140a19b123ab00836b61eb21012208dc58d356b1f41a79", kill_on_drop: false }`
[INFO] [stdout] c7166b529846ae3e80140a19b123ab00836b61eb21012208dc58d356b1f41a79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 0628e463954d6429580956fcf8b3120c95345cce634e2ff569931afd80929011
[INFO] running `Command { std: "docker" "start" "-a" "0628e463954d6429580956fcf8b3120c95345cce634e2ff569931afd80929011", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling cfg-if v1.0.1
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.100
[INFO] [stderr]    Compiling wasm-bindgen v0.2.100
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling anyhow v1.0.99
[INFO] [stderr]    Compiling bytes v1.10.1
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling bitflags v2.9.2
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling tracing-core v0.1.34
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling prettyplease v0.2.36
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling rustix v1.0.8
[INFO] [stderr]    Compiling pulldown-cmark v0.13.0
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling unicase v2.8.1
[INFO] [stderr]    Compiling linux-raw-sys v0.9.4
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling indexmap v2.10.0
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling fastrand v2.3.0
[INFO] [stderr]    Compiling fixedbitset v0.5.7
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling http v1.3.1
[INFO] [stderr]    Compiling adler2 v2.0.1
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling serde_json v1.0.142
[INFO] [stderr]    Compiling petgraph v0.7.1
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling tempfile v3.20.0
[INFO] [stderr]    Compiling pulldown-cmark-to-cmark v21.0.0
[INFO] [stderr]    Compiling multimap v0.10.1
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.100
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.100
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling tonic-build v0.14.1
[INFO] [stderr]    Compiling tower-layer v0.3.3
[INFO] [stderr]    Compiling thiserror v2.0.15
[INFO] [stderr]    Compiling prost-derive v0.14.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling pin-project-internal v1.1.10
[INFO] [stderr]    Compiling ptr_meta_derive v0.3.0
[INFO] [stderr]    Compiling tower-service v0.3.3
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.100
[INFO] [stderr]    Compiling overload v0.1.1
[INFO] [stderr]    Compiling nu-ansi-term v0.46.0
[INFO] [stderr]    Compiling ptr_meta v0.3.0
[INFO] [stderr]    Compiling sharded-slab v0.1.7
[INFO] [stderr]    Compiling matchers v0.1.0
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling pin-project v1.1.10
[INFO] [stderr]    Compiling thiserror-impl v2.0.15
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling munge_macro v0.4.6
[INFO] [stderr]    Compiling js-sys v0.3.77
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.50
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]    Compiling tokio-stream v0.1.17
[INFO] [stderr]    Compiling prost v0.14.1
[INFO] [stderr]    Compiling flate2 v1.1.2
[INFO] [stderr]    Compiling http-body-util v0.1.3
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling thread_local v1.1.9
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling prost-types v0.14.1
[INFO] [stderr]    Compiling sync_wrapper v1.0.2
[INFO] [stderr]    Compiling base64 v0.22.1
[INFO] [stderr]    Compiling percent-encoding v2.3.1
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling tracing-subscriber v0.3.19
[INFO] [stderr]    Compiling munge v0.4.6
[INFO] [stderr]    Compiling rancor v0.1.0
[INFO] [stderr]    Compiling rkyv_derive v0.8.11
[INFO] [stderr]    Compiling http v0.2.12
[INFO] [stderr]    Compiling rend v0.5.2
[INFO] [stderr]    Compiling tonic v0.14.1
[INFO] [stderr]    Compiling prost-build v0.14.1
[INFO] [stderr]    Compiling tonic-web v0.14.1
[INFO] [stderr]    Compiling nill v1.1.0
[INFO] [stderr]    Compiling tower v0.5.2
[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" "0628e463954d6429580956fcf8b3120c95345cce634e2ff569931afd80929011", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0628e463954d6429580956fcf8b3120c95345cce634e2ff569931afd80929011", kill_on_drop: false }`
[INFO] [stdout] 0628e463954d6429580956fcf8b3120c95345cce634e2ff569931afd80929011