[INFO] fetching crate rustfmt_lib 2.0.0-rc.2... [INFO] testing rustfmt_lib-2.0.0-rc.2 against beta-2025-09-21 for beta-1.91-3 [INFO] extracting crate rustfmt_lib 2.0.0-rc.2 into /workspace/builds/worker-1-tc2/source [INFO] started tweaking crates.io crate rustfmt_lib 2.0.0-rc.2 [INFO] finished tweaking crates.io crate rustfmt_lib 2.0.0-rc.2 [INFO] tweaked toml for crates.io crate rustfmt_lib 2.0.0-rc.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate rustfmt_lib 2.0.0-rc.2 on toolchain beta-2025-09-21 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 154 packages to latest compatible versions [INFO] [stderr] Adding annotate-snippets v0.8.0 (available: v0.12.4) [INFO] [stderr] Adding dirs v2.0.2 (available: v6.0.0) [INFO] [stderr] Adding env_logger v0.7.1 (available: v0.11.8) [INFO] [stderr] Adding itertools v0.8.2 (available: v0.14.0) [INFO] [stderr] Adding rustc-ap-rustc_ast v659.0.0 (available: v727.0.0) [INFO] [stderr] Adding rustc-ap-rustc_ast_pretty v659.0.0 (available: v727.0.0) [INFO] [stderr] Adding rustc-ap-rustc_data_structures v659.0.0 (available: v727.0.0) [INFO] [stderr] Adding rustc-ap-rustc_errors v659.0.0 (available: v727.0.0) [INFO] [stderr] Adding rustc-ap-rustc_expand v659.0.0 (available: v727.0.0) [INFO] [stderr] Adding rustc-ap-rustc_parse v659.0.0 (available: v727.0.0) [INFO] [stderr] Adding rustc-ap-rustc_session v659.0.0 (available: v727.0.0) [INFO] [stderr] Adding rustc-ap-rustc_span v659.0.0 (available: v727.0.0) [INFO] [stderr] Adding term v0.6.1 (available: v1.2.0) [INFO] [stderr] Adding thiserror v1.0.69 (available: v2.0.17) [INFO] [stderr] Adding toml v0.5.11 (available: v0.9.7) [INFO] [stderr] Adding unicode-width v0.1.14 (available: v0.2.1) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 37e2c306429c8725d783113e3fbafbc5d5340cd1bc7eca233f2130d9ab8f75fc [INFO] running `Command { std: "docker" "start" "-a" "37e2c306429c8725d783113e3fbafbc5d5340cd1bc7eca233f2130d9ab8f75fc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "37e2c306429c8725d783113e3fbafbc5d5340cd1bc7eca233f2130d9ab8f75fc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "37e2c306429c8725d783113e3fbafbc5d5340cd1bc7eca233f2130d9ab8f75fc", kill_on_drop: false }` [INFO] [stdout] 37e2c306429c8725d783113e3fbafbc5d5340cd1bc7eca233f2130d9ab8f75fc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c4a909cb795fe0ac70eba177cceed9297160d52847b6b0a41fb6d23dd9e6dfca [INFO] running `Command { std: "docker" "start" "-a" "c4a909cb795fe0ac70eba177cceed9297160d52847b6b0a41fb6d23dd9e6dfca", kill_on_drop: false }` [INFO] [stderr] Compiling smallvec v1.15.1 [INFO] [stderr] Compiling lock_api v0.3.4 [INFO] [stderr] Compiling psm v0.1.26 [INFO] [stderr] Compiling rustc-rayon-core v0.3.2 [INFO] [stderr] Compiling generic-array v0.12.4 [INFO] [stderr] Compiling stacker v0.1.21 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling byte-tools v0.3.1 [INFO] [stderr] Compiling block-padding v0.1.5 [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/smallvec-1.15.1/src/lib.rs:96:37 [INFO] [stdout] | [INFO] [stdout] 96 | #![cfg_attr(feature = "may_dangle", feature(dropck_eyepatch))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lock_api-0.3.4/src/lib.rs:91:42 [INFO] [stdout] | [INFO] [stdout] 91 | #![cfg_attr(feature = "nightly", feature(const_fn))] [INFO] [stdout] | ^^^^^^^^ feature has been removed [INFO] [stdout] | [INFO] [stdout] = note: removed in 1.54.0; see for more information [INFO] [stdout] = note: split into finer-grained feature gates [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling memmap v0.7.0 [INFO] [stderr] Compiling unicode-xid v0.2.6 [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not compile `smallvec` (lib) due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] For more information about this error, try `rustc --explain E0557`. [INFO] [stdout] [INFO] [stderr] error: could not compile `lock_api` (lib) due to 1 previous error [INFO] running `Command { std: "docker" "inspect" "c4a909cb795fe0ac70eba177cceed9297160d52847b6b0a41fb6d23dd9e6dfca", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c4a909cb795fe0ac70eba177cceed9297160d52847b6b0a41fb6d23dd9e6dfca", kill_on_drop: false }` [INFO] [stdout] c4a909cb795fe0ac70eba177cceed9297160d52847b6b0a41fb6d23dd9e6dfca