[INFO] fetching crate rooc 0.1.20...
[INFO] testing rooc-0.1.20 against 1.90.0 for beta-1.91-3
[INFO] extracting crate rooc 0.1.20 into /workspace/builds/worker-2-tc1/source
[INFO] removed /workspace/builds/worker-2-tc1/source/.cargo/config.toml
[INFO] started tweaking crates.io crate rooc 0.1.20
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate rooc 0.1.20
[INFO] tweaked toml for crates.io crate rooc 0.1.20 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rooc 0.1.20 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 rooc 0.1.20 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 ryu v1.0.19
[INFO] [stderr]   Downloaded serde-wasm-bindgen v0.6.5
[INFO] [stderr]   Downloaded microlp v0.2.11
[INFO] [stderr]   Downloaded darling_macro v0.14.4
[INFO] [stderr]   Downloaded minicov v0.3.7
[INFO] [stderr]   Downloaded derive_builder_macro v0.11.2
[INFO] [stderr]   Downloaded utf8_slice v1.0.0
[INFO] [stderr]   Downloaded dyn-clone v1.0.18
[INFO] [stderr]   Downloaded amd v0.2.2
[INFO] [stderr]   Downloaded derive_builder_core v0.11.2
[INFO] [stderr]   Downloaded derive_builder v0.11.2
[INFO] [stderr]   Downloaded good_lp v1.13.0
[INFO] [stderr]   Downloaded darling_core v0.14.4
[INFO] [stderr]   Downloaded matrixmultiply v0.3.9
[INFO] [stderr]   Downloaded cc v1.2.16
[INFO] [stderr]   Downloaded enum_dispatch v0.3.13
[INFO] [stderr]   Downloaded clarabel v0.10.0
[INFO] [stderr]   Downloaded sprs v0.11.3
[INFO] [stderr]   Downloaded serde_json v1.0.139
[INFO] [stderr]   Downloaded darling v0.14.4
[INFO] [stderr]   Downloaded web-time v0.2.4
[INFO] [stderr]   Downloaded copper v0.1.0
[INFO] [stderr]   Downloaded wasm-bindgen-test v0.3.50
[INFO] [stderr]   Downloaded wasm-bindgen-test-macro v0.3.50
[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] 9a807707311d3f578d1864ad240d81b59a1daa8ac33751f669f6772fa825ade5
[INFO] running `Command { std: "docker" "start" "-a" "9a807707311d3f578d1864ad240d81b59a1daa8ac33751f669f6772fa825ade5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a807707311d3f578d1864ad240d81b59a1daa8ac33751f669f6772fa825ade5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a807707311d3f578d1864ad240d81b59a1daa8ac33751f669f6772fa825ade5", kill_on_drop: false }`
[INFO] [stdout] 9a807707311d3f578d1864ad240d81b59a1daa8ac33751f669f6772fa825ade5
[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] 32b44f0b4db6b634cef2c2692bd6e0dc69026a2d2ea296c2a44f6149a2c97b01
[INFO] running `Command { std: "docker" "start" "-a" "32b44f0b4db6b634cef2c2692bd6e0dc69026a2d2ea296c2a44f6149a2c97b01", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.17
[INFO] [stderr]    Compiling once_cell v1.20.3
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling serde v1.0.218
[INFO] [stderr]    Compiling matrixmultiply v0.3.9
[INFO] [stderr]    Compiling serde_json v1.0.139
[INFO] [stderr]    Compiling ucd-trie v0.1.7
[INFO] [stderr]    Compiling either v1.14.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling clarabel v0.10.0
[INFO] [stderr]    Compiling ryu v1.0.19
[INFO] [stderr]    Compiling itoa v1.0.14
[INFO] [stderr]    Compiling itertools v0.11.0
[INFO] [stderr]    Compiling dyn-clone v1.0.18
[INFO] [stderr]    Compiling hashbrown v0.15.2
[INFO] [stderr]    Compiling log v0.4.26
[INFO] [stderr]    Compiling copper v0.1.0
[INFO] [stderr]    Compiling utf8_slice v1.0.0
[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/copper-0.1.0/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(int_roundings)]
[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 `copper` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "32b44f0b4db6b634cef2c2692bd6e0dc69026a2d2ea296c2a44f6149a2c97b01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32b44f0b4db6b634cef2c2692bd6e0dc69026a2d2ea296c2a44f6149a2c97b01", kill_on_drop: false }`
[INFO] [stdout] 32b44f0b4db6b634cef2c2692bd6e0dc69026a2d2ea296c2a44f6149a2c97b01