[INFO] fetching crate icentral-subgraph 0.1.0...
[INFO] testing icentral-subgraph-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate icentral-subgraph 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate icentral-subgraph 0.1.0
[INFO] finished tweaking crates.io crate icentral-subgraph 0.1.0
[INFO] tweaked toml for crates.io crate icentral-subgraph 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate icentral-subgraph 0.1.0 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 icentral-subgraph 0.1.0 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 icentral-conn-vertex-map v0.1.0
[INFO] [stderr]   Downloaded icentral-sigmas v0.1.0
[INFO] [stderr]   Downloaded icentral-parents-map v0.1.0
[INFO] [stderr]   Downloaded icentral-pair-dependencies v0.1.0
[INFO] [stderr]   Downloaded icentral-scores v0.1.0
[INFO] [stderr]   Downloaded icentral-node-queue v0.1.0
[INFO] [stderr]   Downloaded icentral-path-counts v0.1.0
[INFO] [stderr]   Downloaded icentral-subgraph-map v0.1.0
[INFO] [stderr]   Downloaded icentral-node-stack v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 90bfec9117189fc0f477c0d7eb28e777d44bf84a4cc997171825c03bf490094d
[INFO] running `Command { std: "docker" "start" "-a" "90bfec9117189fc0f477c0d7eb28e777d44bf84a4cc997171825c03bf490094d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90bfec9117189fc0f477c0d7eb28e777d44bf84a4cc997171825c03bf490094d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90bfec9117189fc0f477c0d7eb28e777d44bf84a4cc997171825c03bf490094d", kill_on_drop: false }`
[INFO] [stdout] 90bfec9117189fc0f477c0d7eb28e777d44bf84a4cc997171825c03bf490094d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 23fd3d6cf91e11ff9136e85774b6436a76a9691ff806eeca671c85ebf6dca243
[INFO] running `Command { std: "docker" "start" "-a" "23fd3d6cf91e11ff9136e85774b6436a76a9691ff806eeca671c85ebf6dca243", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling regex v1.10.6
[INFO] [stderr]    Compiling regex-syntax v0.8.4
[INFO] [stderr]    Compiling serde_json v1.0.128
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling delegate v0.10.0
[INFO] [stderr]    Compiling simba v0.7.3
[INFO] [stderr]    Compiling nalgebra-macros v0.1.0
[INFO] [stderr]    Compiling roaring v0.10.6
[INFO] [stderr]    Compiling owned-alloc v0.2.0
[INFO] [stderr]    Compiling float-ord v0.3.2
[INFO] [stderr]    Compiling queue v0.3.1
[INFO] [stderr]    Compiling nanorand v0.7.0
[INFO] [stderr]    Compiling text_io v0.1.12
[INFO] [stderr]    Compiling pbx v0.1.0
[INFO] [stderr]    Compiling renew-traits v0.1.0
[INFO] [stderr]    Compiling lockfree v0.5.1
[INFO] [stderr]    Compiling regex-automata v0.4.7
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling thiserror-impl v1.0.63
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling thiserror v1.0.63
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling nalgebra v0.31.4
[INFO] [stderr]    Compiling tracing-subscriber v0.3.18
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]    Compiling scan-crate-for-typedefs v0.6.0
[INFO] [stderr]    Compiling traced-test v0.3.6
[INFO] [stderr]    Compiling error-tree v0.3.6
[INFO] [stderr]    Compiling icentral-3p v0.1.0
[INFO] [stderr]    Compiling tracing-serde v0.1.3
[INFO] [stderr]    Compiling deranged v0.3.11
[INFO] [stderr]    Compiling language-enum v0.1.0
[INFO] [stderr]    Compiling named-item v0.1.0
[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/named-item-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 `named-item` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "23fd3d6cf91e11ff9136e85774b6436a76a9691ff806eeca671c85ebf6dca243", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23fd3d6cf91e11ff9136e85774b6436a76a9691ff806eeca671c85ebf6dca243", kill_on_drop: false }`
[INFO] [stdout] 23fd3d6cf91e11ff9136e85774b6436a76a9691ff806eeca671c85ebf6dca243