[INFO] fetching crate memega 0.1.0...
[INFO] testing memega-0.1.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate memega 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate memega 0.1.0
[INFO] finished tweaking crates.io crate memega 0.1.0
[INFO] tweaked toml for crates.io crate memega 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate memega 0.1.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate memega 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" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b9cde52e4993439ee4947d74b3b051e0d9a4b57f70cfdfcaef7180cd04915ce3
[INFO] running `Command { std: "docker" "start" "-a" "b9cde52e4993439ee4947d74b3b051e0d9a4b57f70cfdfcaef7180cd04915ce3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9cde52e4993439ee4947d74b3b051e0d9a4b57f70cfdfcaef7180cd04915ce3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9cde52e4993439ee4947d74b3b051e0d9a4b57f70cfdfcaef7180cd04915ce3", kill_on_drop: false }`
[INFO] [stdout] b9cde52e4993439ee4947d74b3b051e0d9a4b57f70cfdfcaef7180cd04915ce3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec8e5e762681377aa96cccbde3a9da33c64c80498a501d7703d145ef82dd6085
[INFO] running `Command { std: "docker" "start" "-a" "ec8e5e762681377aa96cccbde3a9da33c64c80498a501d7703d145ef82dd6085", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling once_cell v1.10.0
[INFO] [stderr]    Compiling libm v0.2.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling pin-project-lite v0.2.8
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling tracing-core v0.1.23
[INFO] [stderr]    Compiling sharded-slab v0.1.4
[INFO] [stderr]    Compiling thread_local v1.1.4
[INFO] [stderr]    Compiling eyre v0.6.7
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling indenter v0.3.3
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]    Compiling gimli v0.26.1
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling tracing-subscriber v0.3.9
[INFO] [stderr]    Compiling tracing v0.1.32
[INFO] [stderr]    Compiling getrandom v0.2.5
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling tracing-error v0.2.0
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling easy-cast v0.4.4
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling object v0.27.1
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling crossbeam-channel v0.5.4
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling addr2line v0.17.0
[INFO] [stderr]    Compiling owo-colors v3.3.0
[INFO] [stderr]    Compiling float-ord v0.3.2
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling average v0.13.1
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling mathru v0.12.0
[INFO] [stderr]    Compiling color-spantrace v0.2.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling backtrace v0.3.64
[INFO] [stderr]    Compiling pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling rand_distr v0.4.3
[INFO] [stderr]    Compiling approx v0.5.1
[INFO] [stderr]    Compiling concurrent_lru v0.2.0
[INFO] [stderr]    Compiling strum v0.24.0
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling float-pretty-print v0.1.1
[INFO] [stderr]    Compiling color-eyre v0.6.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling strum_macros v0.24.0
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling proc-macro-crate v1.1.3
[INFO] [stderr]    Compiling num_enum_derive v0.5.7
[INFO] [stderr]    Compiling num_enum v0.5.7
[INFO] [stderr]    Compiling memestat v0.1.0
[INFO] [stderr]    Compiling memega v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:37:1
[INFO] [stdout]    |
[INFO] [stdout] 37 | #![feature(array_chunks, is_sorted, trait_alias)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `is_sorted` has been stable since 1.82.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:37:26
[INFO] [stdout]    |
[INFO] [stdout] 37 | #![feature(array_chunks, is_sorted, trait_alias)]
[INFO] [stdout]    |                          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `array_chunks`
[INFO] [stdout]   --> src/lib.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | #![feature(array_chunks, is_sorted, trait_alias)]
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `array_chunks` found for struct `SmallVec<[usize; 4]>` in the current scope
[INFO] [stdout]    --> src/ops/crossover.rs:200:30
[INFO] [stdout]     |
[INFO] [stdout] 200 |     for &[st, en] in xpoints.array_chunks::<2>() {
[INFO] [stdout]     |                              ^^^^^^^^^^^^ `SmallVec<[usize; 4]>` is not an iterator
[INFO] [stdout]     |
[INFO] [stdout] help: call `.into_iter()` first
[INFO] [stdout]     |
[INFO] [stdout] 200 |     for &[st, en] in xpoints.into_iter().array_chunks::<2>() {
[INFO] [stdout]     |                              ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `genome` is never read
[INFO] [stdout]   --> src/eval.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub genome: G,              // Actual genome.
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     unused,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` implied by `#[warn(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `params` is never read
[INFO] [stdout]   --> src/eval.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub params: Params,         // Adaptively evolved parameters
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `selection_fitness` is never read
[INFO] [stdout]   --> src/eval.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub selection_fitness: f64, // Potentially adjusted fitness, for selection.
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `unevaluated` is never read
[INFO] [stdout]   --> src/run/result.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub unevaluated: UnevaluatedGen<G>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `stagnant` is never read
[INFO] [stdout]   --> src/run/result.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub stagnant: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `memega` (lib) due to 3 previous errors; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "ec8e5e762681377aa96cccbde3a9da33c64c80498a501d7703d145ef82dd6085", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec8e5e762681377aa96cccbde3a9da33c64c80498a501d7703d145ef82dd6085", kill_on_drop: false }`
[INFO] [stdout] ec8e5e762681377aa96cccbde3a9da33c64c80498a501d7703d145ef82dd6085