[INFO] fetching crate intellij-demos-external-lib-navigation 0.1.0...
[INFO] testing intellij-demos-external-lib-navigation-0.1.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate intellij-demos-external-lib-navigation 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate intellij-demos-external-lib-navigation 0.1.0
[INFO] finished tweaking crates.io crate intellij-demos-external-lib-navigation 0.1.0
[INFO] tweaked toml for crates.io crate intellij-demos-external-lib-navigation 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate intellij-demos-external-lib-navigation 0.1.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 23 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a187e5ef39cd5398e2617da1fdf0446ddf17ca1ed3494f825db7876abfc2f208
[INFO] running `Command { std: "docker" "start" "-a" "a187e5ef39cd5398e2617da1fdf0446ddf17ca1ed3494f825db7876abfc2f208", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a187e5ef39cd5398e2617da1fdf0446ddf17ca1ed3494f825db7876abfc2f208", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a187e5ef39cd5398e2617da1fdf0446ddf17ca1ed3494f825db7876abfc2f208", kill_on_drop: false }`
[INFO] [stdout] a187e5ef39cd5398e2617da1fdf0446ddf17ca1ed3494f825db7876abfc2f208
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 228305eb88aa662ac13547ed36bafdf2939440b44ec01439fbc1ffc7660d1f35
[INFO] running `Command { std: "docker" "start" "-a" "228305eb88aa662ac13547ed36bafdf2939440b44ec01439fbc1ffc7660d1f35", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling zerocopy v0.8.27
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling anyhow v1.0.100
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling hashbrown v0.13.2
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling borsh-schema-derive-internal v0.10.4
[INFO] [stderr]    Compiling borsh-derive-internal v0.10.4
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling borsh-derive v0.10.4
[INFO] [stderr]    Compiling borsh v0.10.4
[INFO] [stderr]    Compiling intellij-demos-associated-type-defaults v0.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/intellij-demos-associated-type-defaults-0.1.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(associated_type_defaults)]
[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 `intellij-demos-associated-type-defaults` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "228305eb88aa662ac13547ed36bafdf2939440b44ec01439fbc1ffc7660d1f35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "228305eb88aa662ac13547ed36bafdf2939440b44ec01439fbc1ffc7660d1f35", kill_on_drop: false }`
[INFO] [stdout] 228305eb88aa662ac13547ed36bafdf2939440b44ec01439fbc1ffc7660d1f35