[INFO] fetching crate ac-library-rs-expander 0.1.0... [INFO] checking ac-library-rs-expander-0.1.0 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1 [INFO] extracting crate ac-library-rs-expander 0.1.0 into /workspace/builds/worker-2-tc1/source [INFO] started tweaking crates.io crate ac-library-rs-expander 0.1.0 [INFO] finished tweaking crates.io crate ac-library-rs-expander 0.1.0 [INFO] tweaked toml for crates.io crate ac-library-rs-expander 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate ac-library-rs-expander 0.1.0 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate ac-library-rs-expander 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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded structopt v0.3.20 [INFO] [stderr] Downloaded hermit-abi v0.1.17 [INFO] [stderr] Downloaded structopt-derive v0.4.13 [INFO] [stderr] Downloaded semver-parser v0.10.1 [INFO] [stderr] Downloaded itoa v0.4.6 [INFO] [stderr] Downloaded cargo_metadata v0.12.0 [INFO] [stderr] Downloaded serde v1.0.117 [INFO] [stderr] Downloaded serde_derive v1.0.117 [INFO] [stderr] Downloaded serde_json v1.0.59 [INFO] [stderr] Downloaded syn v1.0.48 [INFO] [stderr] Downloaded libc v0.2.80 [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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 91819f41433b2e19a2fd0e2f1e39ca40cbbd789fd5170a18fc5662e2ecd5ab77 [INFO] running `Command { std: "docker" "start" "-a" "91819f41433b2e19a2fd0e2f1e39ca40cbbd789fd5170a18fc5662e2ecd5ab77", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "91819f41433b2e19a2fd0e2f1e39ca40cbbd789fd5170a18fc5662e2ecd5ab77", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "91819f41433b2e19a2fd0e2f1e39ca40cbbd789fd5170a18fc5662e2ecd5ab77", kill_on_drop: false }` [INFO] [stdout] 91819f41433b2e19a2fd0e2f1e39ca40cbbd789fd5170a18fc5662e2ecd5ab77 [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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 15c14314af535e51ac580d4a5c20bf35c6d2c0c9aa1f03b7e0e42f2b94f0e167 [INFO] running `Command { std: "docker" "start" "-a" "15c14314af535e51ac580d4a5c20bf35c6d2c0c9aa1f03b7e0e42f2b94f0e167", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.48 [INFO] [stderr] Compiling version_check v0.9.2 [INFO] [stderr] Compiling serde_derive v1.0.117 [INFO] [stderr] Compiling libc v0.2.80 [INFO] [stderr] Compiling serde v1.0.117 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Checking ucd-trie v0.1.3 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Checking pest v2.1.3 [INFO] [stderr] Compiling unicode-segmentation v1.6.0 [INFO] [stderr] Compiling serde_json v1.0.59 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking itoa v0.4.6 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking semver-parser v0.10.1 [INFO] [stdout] error[E0658]: custom inner attributes are unstable [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/semver-parser-0.10.1/src/generated.rs:4:4 [INFO] [stdout] | [INFO] [stdout] 4 | #![rustfmt::skip] [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #54726 for more information [INFO] [stdout] = help: add `#![feature(custom_inner_attributes)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking clap v2.33.3 [INFO] [stdout] For more information about this error, try `rustc --explain E0658`. [INFO] [stdout] [INFO] [stderr] error: could not compile `semver-parser` (lib) due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "15c14314af535e51ac580d4a5c20bf35c6d2c0c9aa1f03b7e0e42f2b94f0e167", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "15c14314af535e51ac580d4a5c20bf35c6d2c0c9aa1f03b7e0e42f2b94f0e167", kill_on_drop: false }` [INFO] [stdout] 15c14314af535e51ac580d4a5c20bf35c6d2c0c9aa1f03b7e0e42f2b94f0e167