[INFO] fetching crate cova-space 0.2.0...
[INFO] testing cova-space-0.2.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate cova-space 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate cova-space 0.2.0
[INFO] finished tweaking crates.io crate cova-space 0.2.0
[INFO] tweaked toml for crates.io crate cova-space 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate cova-space 0.2.0 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 cova-space 0.2.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wit-bindgen-rt v0.39.0
[INFO] [stderr]   Downloaded tempfile v3.20.0
[INFO] [stderr]   Downloaded getrandom v0.3.2
[INFO] [stderr]   Downloaded errno v0.3.11
[INFO] [stderr]   Downloaded autocfg v1.4.0
[INFO] [stderr]   Downloaded either v1.15.0
[INFO] [stderr]   Downloaded crossbeam-deque v0.8.6
[INFO] [stderr]   Downloaded fastrand v2.3.0
[INFO] [stderr]   Downloaded bitflags v2.9.0
[INFO] [stderr]   Downloaded cova-algebra v0.1.2
[INFO] [stderr]   Downloaded rayon-core v1.12.1
[INFO] [stderr]   Downloaded r-efi v5.2.0
[INFO] [stderr]   Downloaded num-traits v0.2.19
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.18
[INFO] [stderr]   Downloaded wasi v0.14.2+wasi-0.2.4
[INFO] [stderr]   Downloaded itertools v0.14.0
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.21
[INFO] [stderr]   Downloaded rayon v1.10.0
[INFO] [stderr]   Downloaded rustix v1.0.7
[INFO] [stderr]   Downloaded libc v0.2.172
[INFO] [stderr]   Downloaded linux-raw-sys v0.9.4
[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] 92dfb4f1cdff89a6e251827ac46af5e2aed028dba2d4b3d16437de41713b4d88
[INFO] running `Command { std: "docker" "start" "-a" "92dfb4f1cdff89a6e251827ac46af5e2aed028dba2d4b3d16437de41713b4d88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92dfb4f1cdff89a6e251827ac46af5e2aed028dba2d4b3d16437de41713b4d88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92dfb4f1cdff89a6e251827ac46af5e2aed028dba2d4b3d16437de41713b4d88", kill_on_drop: false }`
[INFO] [stdout] 92dfb4f1cdff89a6e251827ac46af5e2aed028dba2d4b3d16437de41713b4d88
[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] d9f0259e00e3fb4e3a7618aa9890610676ad20075a10e048fac570ef03416e92
[INFO] running `Command { std: "docker" "start" "-a" "d9f0259e00e3fb4e3a7618aa9890610676ad20075a10e048fac570ef03416e92", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling cova-algebra v0.1.2
[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/cova-algebra-0.1.2/src/lib.rs:43:1
[INFO] [stdout]    |
[INFO] [stdout] 43 | #![feature(generic_const_exprs)]
[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 `cova-algebra` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d9f0259e00e3fb4e3a7618aa9890610676ad20075a10e048fac570ef03416e92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9f0259e00e3fb4e3a7618aa9890610676ad20075a10e048fac570ef03416e92", kill_on_drop: false }`
[INFO] [stdout] d9f0259e00e3fb4e3a7618aa9890610676ad20075a10e048fac570ef03416e92
