[INFO] fetching crate xsynth-core 0.3.4... [INFO] testing xsynth-core-0.3.4 against beta-2025-09-21 for beta-1.91-3 [INFO] extracting crate xsynth-core 0.3.4 into /workspace/builds/worker-4-tc2/source [INFO] started tweaking crates.io crate xsynth-core 0.3.4 [INFO] removed 0 missing examples [INFO] finished tweaking crates.io crate xsynth-core 0.3.4 [INFO] tweaked toml for crates.io crate xsynth-core 0.3.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate xsynth-core 0.3.4 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] crate crates.io crate xsynth-core 0.3.4 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-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 16d264eb293d6664059a9c4dc666e2a702187898239e78a86a6afe119651294d [INFO] running `Command { std: "docker" "start" "-a" "16d264eb293d6664059a9c4dc666e2a702187898239e78a86a6afe119651294d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "16d264eb293d6664059a9c4dc666e2a702187898239e78a86a6afe119651294d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "16d264eb293d6664059a9c4dc666e2a702187898239e78a86a6afe119651294d", kill_on_drop: false }` [INFO] [stdout] 16d264eb293d6664059a9c4dc666e2a702187898239e78a86a6afe119651294d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 31f747489aa7c0abdc11d3448ef1cf3780d112b4fd672b642fa3cab5f7744317 [INFO] running `Command { std: "docker" "start" "-a" "31f747489aa7c0abdc11d3448ef1cf3780d112b4fd672b642fa3cab5f7744317", kill_on_drop: false }` [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling log v0.4.17 [INFO] [stderr] Compiling proc-macro2 v1.0.86 [INFO] [stderr] Compiling lazy_static v1.5.0 [INFO] [stderr] Compiling autocfg v1.1.0 [INFO] [stderr] Compiling unicode-ident v1.0.8 [INFO] [stderr] Compiling bytemuck v1.16.3 [INFO] [stderr] Compiling bitflags v1.3.2 [INFO] [stderr] Compiling arrayvec v0.7.2 [INFO] [stderr] Compiling crossbeam-utils v0.8.20 [INFO] [stderr] Compiling memchr v2.6.4 [INFO] [stderr] Compiling regex-syntax v0.8.2 [INFO] [stderr] Compiling version_check v0.9.4 [INFO] [stderr] Compiling strength_reduce v0.2.4 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling thiserror v1.0.63 [INFO] [stderr] Compiling paste v1.0.12 [INFO] [stderr] Compiling libm v0.1.4 [INFO] [stderr] Compiling encoding_rs v0.8.34 [INFO] [stderr] Compiling rayon-core v1.12.1 [INFO] [stderr] Compiling once_cell v1.17.1 [INFO] [stderr] Compiling extended v0.1.0 [INFO] [stderr] Compiling symphonia-core v0.5.4 [INFO] [stderr] Compiling either v1.8.1 [INFO] [stderr] Compiling soundfont v0.1.0 [INFO] [stderr] Compiling rustfft v6.2.0 [INFO] [stderr] Compiling spin_sleep v1.2.1 [INFO] [stderr] Compiling to_vec v0.1.0 [INFO] [stderr] Compiling atomic_refcell v0.1.13 [INFO] [stderr] Compiling num-traits v0.2.15 [INFO] [stderr] Compiling simdeez v2.0.0-dev3 [INFO] [stderr] Compiling aho-corasick v1.0.1 [INFO] [stderr] Compiling quote v1.0.36 [INFO] [stderr] Compiling crossbeam-epoch v0.9.18 [INFO] [stderr] Compiling crossbeam-channel v0.5.13 [INFO] [stderr] Compiling biquad v0.4.2 [INFO] [stderr] Compiling syn v2.0.72 [INFO] [stderr] Compiling encoding_rs_io v0.1.7 [INFO] [stderr] Compiling crossbeam-deque v0.8.5 [INFO] [stderr] Compiling num-integer v0.1.46 [INFO] [stderr] Compiling num-complex v0.4.5 [INFO] [stderr] Compiling symphonia-metadata v0.5.4 [INFO] [stderr] Compiling symphonia-codec-pcm v0.5.4 [INFO] [stderr] Compiling symphonia-codec-adpcm v0.5.4 [INFO] [stderr] Compiling primal-check v0.3.3 [INFO] [stderr] Compiling transpose v0.2.3 [INFO] [stderr] Compiling symphonia-utils-xiph v0.5.4 [INFO] [stderr] Compiling symphonia-format-riff v0.5.4 [INFO] [stderr] Compiling symphonia-format-ogg v0.5.4 [INFO] [stderr] Compiling symphonia-codec-vorbis v0.5.4 [INFO] [stderr] Compiling symphonia-bundle-flac v0.5.4 [INFO] [stderr] Compiling symphonia-format-mkv v0.5.4 [INFO] [stderr] Compiling rayon v1.10.0 [INFO] [stderr] Compiling regex-automata v0.4.3 [INFO] [stderr] Compiling symphonia v0.5.4 [INFO] [stderr] Compiling regex-bnf-macro v0.1.1 [INFO] [stderr] Compiling thiserror-impl v1.0.63 [INFO] [stderr] Compiling regex v1.10.2 [INFO] [stderr] Compiling regex-bnf v0.1.2 [INFO] [stderr] Compiling lazy-regex-proc_macros v3.2.0 [INFO] [stderr] Compiling realfft v3.3.0 [INFO] [stderr] Compiling rubato v0.15.0 [INFO] [stderr] Compiling lazy-regex v3.2.0 [INFO] [stderr] Compiling xsynth-soundfonts v0.3.4 [INFO] [stderr] Compiling xsynth-core v0.3.4 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.12s [INFO] running `Command { std: "docker" "inspect" "31f747489aa7c0abdc11d3448ef1cf3780d112b4fd672b642fa3cab5f7744317", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "31f747489aa7c0abdc11d3448ef1cf3780d112b4fd672b642fa3cab5f7744317", kill_on_drop: false }` [INFO] [stdout] 31f747489aa7c0abdc11d3448ef1cf3780d112b4fd672b642fa3cab5f7744317 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6c2e67708df60bb384ccdf6c77f73a8b56e283e35ba423a5485db9722f02028c [INFO] running `Command { std: "docker" "start" "-a" "6c2e67708df60bb384ccdf6c77f73a8b56e283e35ba423a5485db9722f02028c", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.149 [INFO] [stderr] Compiling either v1.8.1 [INFO] [stderr] Compiling serde v1.0.209 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling num-traits v0.2.15 [INFO] [stderr] Compiling serde_json v1.0.127 [INFO] [stderr] Compiling serde_derive v1.0.209 [INFO] [stderr] Compiling half v1.8.2 [INFO] [stderr] Compiling plotters-backend v0.3.4 [INFO] [stderr] Compiling itoa v1.0.6 [INFO] [stderr] Compiling ciborium-io v0.2.0 [INFO] [stderr] Compiling clap_lex v0.7.2 [INFO] [stderr] Compiling ryu v1.0.13 [INFO] [stderr] Compiling anstyle v1.0.8 [INFO] [stderr] Compiling convert_case v0.4.0 [INFO] [stderr] Compiling cast v0.3.0 [INFO] [stderr] Compiling rayon v1.10.0 [INFO] [stderr] Compiling itertools v0.10.5 [INFO] [stderr] Compiling ppv-lite86 v0.2.17 [INFO] [stderr] Compiling clap_builder v4.5.15 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling oorandom v11.1.3 [INFO] [stderr] Compiling ciborium-ll v0.2.0 [INFO] [stderr] Compiling walkdir v2.3.3 [INFO] [stderr] Compiling anes v0.1.6 [INFO] [stderr] Compiling plotters-svg v0.3.3 [INFO] [stderr] Compiling plotters v0.3.4 [INFO] [stderr] Compiling getrandom v0.2.9 [INFO] [stderr] Compiling is-terminal v0.4.12 [INFO] [stderr] Compiling rand_core v0.6.4 [INFO] [stderr] Compiling midi-toolkit-rs-derive v0.1.0 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling rand v0.8.5 [INFO] [stderr] Compiling criterion-plot v0.5.0 [INFO] [stderr] Compiling midi-toolkit-rs v0.1.0 [INFO] [stderr] Compiling xsynth-core v0.3.4 (/opt/rustwide/workdir) [INFO] [stderr] Compiling clap v4.5.16 [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/midi-toolkit-rs-0.1.0/src/lib.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(coroutines)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [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/midi-toolkit-rs-0.1.0/src/lib.rs:2:1 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(coroutine_trait)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [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/midi-toolkit-rs-0.1.0/src/lib.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | #![feature(associated_type_defaults)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [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/midi-toolkit-rs-0.1.0/src/lib.rs:4:1 [INFO] [stdout] | [INFO] [stdout] 4 | #![feature(type_alias_impl_trait)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [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/midi-toolkit-rs-0.1.0/src/lib.rs:5:1 [INFO] [stdout] | [INFO] [stdout] 5 | #![feature(impl_trait_in_assoc_type)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not compile `midi-toolkit-rs` (lib) due to 5 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "6c2e67708df60bb384ccdf6c77f73a8b56e283e35ba423a5485db9722f02028c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6c2e67708df60bb384ccdf6c77f73a8b56e283e35ba423a5485db9722f02028c", kill_on_drop: false }` [INFO] [stdout] 6c2e67708df60bb384ccdf6c77f73a8b56e283e35ba423a5485db9722f02028c