[INFO] fetching crate alass-cli 2.0.0...
[INFO] checking alass-cli-2.0.0 against 67a539cbdf2a0107837ce64f9069509a44da67b7 for pr-164053
[INFO] extracting crate alass-cli 2.0.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate alass-cli 2.0.0
[INFO] finished tweaking crates.io crate alass-cli 2.0.0
[INFO] tweaked toml for crates.io crate alass-cli 2.0.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate alass-cli 2.0.0 on toolchain 67a539cbdf2a0107837ce64f9069509a44da67b7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+67a539cbdf2a0107837ce64f9069509a44da67b7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate alass-cli 2.0.0 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" "+67a539cbdf2a0107837ce64f9069509a44da67b7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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] ca15d195a79f56627a7be02614086ab4e0982a50f1ffecf2e7fe416c20fc92de
[INFO] running `Command { std: "docker" "start" "ca15d195a79f56627a7be02614086ab4e0982a50f1ffecf2e7fe416c20fc92de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca15d195a79f56627a7be02614086ab4e0982a50f1ffecf2e7fe416c20fc92de", 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" "ca15d195a79f56627a7be02614086ab4e0982a50f1ffecf2e7fe416c20fc92de" "/opt/rustwide/cargo-home/bin/cargo" "+67a539cbdf2a0107837ce64f9069509a44da67b7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca15d195a79f56627a7be02614086ab4e0982a50f1ffecf2e7fe416c20fc92de", 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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ca15d195a79f56627a7be02614086ab4e0982a50f1ffecf2e7fe416c20fc92de" "/opt/rustwide/cargo-home/bin/cargo" "+67a539cbdf2a0107837ce64f9069509a44da67b7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling cc v1.0.45
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling bitflags v1.2.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking ucd-util v0.1.5
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]    Compiling encoding_rs v0.8.20
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking ascii v0.7.1
[INFO] [stderr]     Checking nom v2.1.0
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking safemem v0.2.0
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking combine v2.5.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking alass-core v2.0.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stdout] error[E0658]: use of unstable library feature `liballoc_internals`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/alass-core-2.0.0/src/timespan_ops.rs:34:23
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let mut mapping = std::vec::from_elem(0usize, overlapping.len());
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: add `#![feature(liballoc_internals)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-10-09; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling webrtc-vad v0.4.0
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `alass-core` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ca15d195a79f56627a7be02614086ab4e0982a50f1ffecf2e7fe416c20fc92de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca15d195a79f56627a7be02614086ab4e0982a50f1ffecf2e7fe416c20fc92de", kill_on_drop: false }`
[INFO] [stdout] ca15d195a79f56627a7be02614086ab4e0982a50f1ffecf2e7fe416c20fc92de