[INFO] fetching crate pbc 0.1.24...
[INFO] testing pbc-0.1.24 against 1.91.0 for beta-1.92-2
[INFO] extracting crate pbc 0.1.24 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate pbc 0.1.24
[INFO] finished tweaking crates.io crate pbc 0.1.24
[INFO] tweaked toml for crates.io crate pbc 0.1.24 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pbc 0.1.24 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 pbc 0.1.24 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 static_init_macro v1.0.4
[INFO] [stderr]   Downloaded loginit v0.1.18
[INFO] [stderr]   Downloaded ifs v0.1.44
[INFO] [stderr]   Downloaded pb-jelly v0.0.17
[INFO] [stderr]   Downloaded aok v0.1.17
[INFO] [stderr]   Downloaded pipe v0.4.0
[INFO] [stderr]   Downloaded compact_str v0.5.2
[INFO] [stderr]   Downloaded xerr v0.1.15
[INFO] [stderr]   Downloaded clap v4.5.32
[INFO] [stderr]   Downloaded pb-jelly-gen v0.0.17
[INFO] [stderr]   Downloaded static_init v1.0.3
[INFO] [stderr]   Downloaded clap_builder v4.5.32
[INFO] [stderr]   Downloaded tokio v1.44.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 4aec7723203812041d35a8c44c4b58db6ce3f36f2c9dbcc49c1ca067654c681e
[INFO] running `Command { std: "docker" "start" "-a" "4aec7723203812041d35a8c44c4b58db6ce3f36f2c9dbcc49c1ca067654c681e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4aec7723203812041d35a8c44c4b58db6ce3f36f2c9dbcc49c1ca067654c681e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4aec7723203812041d35a8c44c4b58db6ce3f36f2c9dbcc49c1ca067654c681e", kill_on_drop: false }`
[INFO] [stdout] 4aec7723203812041d35a8c44c4b58db6ce3f36f2c9dbcc49c1ca067654c681e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 8a2bc684001ce192457a1f343a93822e0e916162ec0b7ab5c704cb078e7e763f
[INFO] running `Command { std: "docker" "start" "-a" "8a2bc684001ce192457a1f343a93822e0e916162ec0b7ab5c704cb078e7e763f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling rustversion v1.0.20
[INFO] [stderr]    Compiling once_cell v1.21.1
[INFO] [stderr]    Compiling anyhow v1.0.97
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]    Compiling getrandom v0.3.2
[INFO] [stderr]    Compiling rustix v1.0.2
[INFO] [stderr]    Compiling colorchoice v1.0.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling anstyle-parse v0.2.6
[INFO] [stderr]    Compiling bitflags v2.9.0
[INFO] [stderr]    Compiling linux-raw-sys v0.9.3
[INFO] [stderr]    Compiling anstyle-query v1.1.2
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling indexmap v2.8.0
[INFO] [stderr]    Compiling anstream v0.6.18
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling clap_builder v4.5.32
[INFO] [stderr]    Compiling aok v0.1.17
[INFO] [stderr]    Compiling crossbeam-channel v0.5.14
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling castaway v0.2.3
[INFO] [stderr]    Compiling compact_str v0.5.2
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling pb-jelly v0.0.17
[INFO] [stderr]    Compiling pipe v0.4.0
[INFO] [stderr]    Compiling tempfile v3.19.0
[INFO] [stderr]    Compiling pb-jelly-gen v0.0.17
[INFO] [stderr]    Compiling tracing-attributes v0.1.28
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling clap_derive v4.5.32
[INFO] [stderr]    Compiling tokio v1.44.1
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling xerr v0.1.15
[INFO] [stderr]    Compiling clap v4.5.32
[INFO] [stderr]    Compiling ifs v0.1.44
[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/ifs-0.1.44/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trait_alias)]
[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 `ifs` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "8a2bc684001ce192457a1f343a93822e0e916162ec0b7ab5c704cb078e7e763f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a2bc684001ce192457a1f343a93822e0e916162ec0b7ab5c704cb078e7e763f", kill_on_drop: false }`
[INFO] [stdout] 8a2bc684001ce192457a1f343a93822e0e916162ec0b7ab5c704cb078e7e763f