[INFO] fetching crate opt_solver 0.1.1...
[INFO] testing opt_solver-0.1.1 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate opt_solver 0.1.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate opt_solver 0.1.1
[INFO] finished tweaking crates.io crate opt_solver 0.1.1
[INFO] tweaked toml for crates.io crate opt_solver 0.1.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate opt_solver 0.1.1 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "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" "+1.99.0-beta.8" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 80 packages to highest compatible versions
[INFO] [stderr]       Adding num-bigint v0.4.8 (available: v0.5.1)
[INFO] [stderr]       Adding pyo3 v0.19.2 (available: v0.30.1)
[INFO] [stderr]       Adding rand v0.8.8 (available: v0.10.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pyo3-macros v0.19.2
[INFO] [stderr]   Downloaded pyo3-build-config v0.19.2
[INFO] [stderr]   Downloaded pyo3-ffi v0.19.2
[INFO] [stderr]   Downloaded pyo3-macros-backend v0.19.2
[INFO] [stderr]   Downloaded pyo3 v0.19.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 29ed14c2df91b2ea3d1b7d0f89fd863af2d24c8b173e7c403326f4fb2ec5e7e3
[INFO] running `Command { std: "docker" "start" "29ed14c2df91b2ea3d1b7d0f89fd863af2d24c8b173e7c403326f4fb2ec5e7e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29ed14c2df91b2ea3d1b7d0f89fd863af2d24c8b173e7c403326f4fb2ec5e7e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "29ed14c2df91b2ea3d1b7d0f89fd863af2d24c8b173e7c403326f4fb2ec5e7e3" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29ed14c2df91b2ea3d1b7d0f89fd863af2d24c8b173e7c403326f4fb2ec5e7e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "29ed14c2df91b2ea3d1b7d0f89fd863af2d24c8b173e7c403326f4fb2ec5e7e3" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling target-lexicon v0.12.16
[INFO] [stderr]    Compiling once_cell v1.21.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.21
[INFO] [stderr]    Compiling serde v1.0.229
[INFO] [stderr]    Compiling crossbeam-deque v0.8.8
[INFO] [stderr]    Compiling memoffset v0.9.1
[INFO] [stderr]    Compiling rust_decimal v1.43.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.107
[INFO] [stderr]    Compiling arrayvec v0.7.8
[INFO] [stderr]    Compiling num-integer v0.1.47
[INFO] [stderr]    Compiling indoc v1.0.9
[INFO] [stderr]    Compiling either v1.19.0
[INFO] [stderr]    Compiling unindent v0.1.11
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling array-init v2.1.0
[INFO] [stderr]    Compiling num-bigint v0.4.8
[INFO] [stderr]    Compiling quote v1.0.47
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling pyo3-build-config v0.19.2
[INFO] [stderr]    Compiling rayon v1.12.0
[INFO] [stderr]    Compiling pyo3-ffi v0.19.2
[INFO] [stderr]    Compiling pyo3 v0.19.2
[INFO] [stderr]    Compiling pyo3-macros-backend v0.19.2
[INFO] [stderr]    Compiling pyo3-macros v0.19.2
[INFO] [stderr]    Compiling opt_solver v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(associated_const_equality)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in 1.94.0
[INFO] [stdout]   = note: merged into `min_generic_const_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `opt_solver` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "29ed14c2df91b2ea3d1b7d0f89fd863af2d24c8b173e7c403326f4fb2ec5e7e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29ed14c2df91b2ea3d1b7d0f89fd863af2d24c8b173e7c403326f4fb2ec5e7e3", kill_on_drop: false }`
[INFO] [stdout] 29ed14c2df91b2ea3d1b7d0f89fd863af2d24c8b173e7c403326f4fb2ec5e7e3
