[INFO] fetching crate xsynth-realtime 0.4.0...
[INFO] testing xsynth-realtime-0.4.0 against 1.95.0 for beta-1.96-2
[INFO] extracting crate xsynth-realtime 0.4.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate xsynth-realtime 0.4.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate xsynth-realtime 0.4.0
[INFO] tweaked toml for crates.io crate xsynth-realtime 0.4.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate xsynth-realtime 0.4.0 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate xsynth-realtime 0.4.0 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded primal-check v0.3.4
[INFO] [stderr]   Downloaded realfft v3.5.0
[INFO] [stderr]   Downloaded regex-bnf v0.1.2
[INFO] [stderr]   Downloaded xsynth-soundfonts v0.4.0
[INFO] [stderr]   Downloaded coreaudio-sys v0.2.17
[INFO] [stderr]   Downloaded midi-toolkit-rs-derive v0.1.0
[INFO] [stderr]   Downloaded alsa-sys v0.3.1
[INFO] [stderr]   Downloaded toml v0.5.11
[INFO] [stderr]   Downloaded midi-toolkit-rs v0.1.0
[INFO] [stderr]   Downloaded alsa v0.9.1
[INFO] [stderr]   Downloaded toml_edit v0.25.10+spec-1.1.0
[INFO] [stderr]   Downloaded libm v0.1.4
[INFO] [stderr]   Downloaded ndk v0.8.0
[INFO] [stderr]   Downloaded oboe-sys v0.6.1
[INFO] [stderr]   Downloaded cpal v0.15.3
[INFO] [stderr]   Downloaded cbindgen v0.26.0
[INFO] [stderr]   Downloaded simdeez v3.0.1
[INFO] [stderr]   Downloaded coreaudio-rs v0.11.3
[INFO] [stderr]   Downloaded bindgen v0.72.1
[INFO] [stderr]   Downloaded windows-core v0.54.0
[INFO] [stderr]   Downloaded encoding_rs_io v0.1.7
[INFO] [stderr]   Downloaded ndk-sys v0.5.0+25.2.9519653
[INFO] [stderr]   Downloaded rustfft v6.4.1
[INFO] [stderr]   Downloaded mach2 v0.4.3
[INFO] [stderr]   Downloaded oboe v0.6.1
[INFO] [stderr]   Downloaded biquad v0.4.2
[INFO] [stderr]   Downloaded lazy-regex v3.6.0
[INFO] [stderr]   Downloaded soundfont v0.1.0
[INFO] [stderr]   Downloaded xsynth-core v0.4.0
[INFO] [stderr]   Downloaded riff v1.0.1
[INFO] [stderr]   Downloaded atomic_refcell v0.1.13
[INFO] [stderr]   Downloaded lazy-regex-proc_macros v3.6.0
[INFO] [stderr]   Downloaded regex-bnf-macro v0.1.1
[INFO] [stderr]   Downloaded rubato v0.15.0
[INFO] [stderr]   Downloaded wav v1.0.1
[INFO] [stderr]   Downloaded dasp_sample v0.11.0
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.67
[INFO] [stderr]   Downloaded spin_sleep v1.3.3
[INFO] [stderr]   Downloaded to_vec v0.1.0
[INFO] [stderr]   Downloaded web-sys v0.3.94
[INFO] [stderr]   Downloaded windows v0.54.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1071d4fe4fa4e4608936f468ff0264260692c4ca934268e7aaf7b6ca4593198c
[INFO] running `Command { std: "docker" "start" "-a" "1071d4fe4fa4e4608936f468ff0264260692c4ca934268e7aaf7b6ca4593198c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1071d4fe4fa4e4608936f468ff0264260692c4ca934268e7aaf7b6ca4593198c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1071d4fe4fa4e4608936f468ff0264260692c4ca934268e7aaf7b6ca4593198c", kill_on_drop: false }`
[INFO] [stdout] 1071d4fe4fa4e4608936f468ff0264260692c4ca934268e7aaf7b6ca4593198c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04dc83ef21ba3db15a565c2b7a2393ece5d1ac681b9c3ec6a66754a170d9a5a0
[INFO] running `Command { std: "docker" "start" "-a" "04dc83ef21ba3db15a565c2b7a2393ece5d1ac681b9c3ec6a66754a170d9a5a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex-syntax v0.8.10
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling strength_reduce v0.2.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling symphonia-core v0.5.5
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling libm v0.1.4
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling encoding_rs_io v0.1.7
[INFO] [stderr]    Compiling soundfont v0.1.0
[INFO] [stderr]    Compiling cpal v0.15.3
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling simdeez v3.0.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling riff v1.0.1
[INFO] [stderr]    Compiling to_vec v0.1.0
[INFO] [stderr]    Compiling spin_sleep v1.3.3
[INFO] [stderr]    Compiling dasp_sample v0.11.0
[INFO] [stderr]    Compiling atomic_refcell v0.1.13
[INFO] [stderr]    Compiling wav v1.0.1
[INFO] [stderr]    Compiling primal-check v0.3.4
[INFO] [stderr]    Compiling transpose v0.2.3
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling biquad v0.4.2
[INFO] [stderr]    Compiling alsa v0.9.1
[INFO] [stderr]    Compiling rustfft v6.4.1
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling symphonia-metadata v0.5.5
[INFO] [stderr]    Compiling symphonia-codec-pcm v0.5.5
[INFO] [stderr]    Compiling symphonia-codec-adpcm v0.5.5
[INFO] [stderr]    Compiling symphonia-utils-xiph v0.5.5
[INFO] [stderr]    Compiling symphonia-format-riff v0.5.5
[INFO] [stderr]    Compiling symphonia-format-mkv v0.5.5
[INFO] [stderr]    Compiling symphonia-format-ogg v0.5.5
[INFO] [stderr]    Compiling symphonia-codec-vorbis v0.5.5
[INFO] [stderr]    Compiling symphonia-bundle-flac v0.5.5
[INFO] [stderr]    Compiling symphonia v0.5.5
[INFO] [stderr]    Compiling regex v1.12.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling lazy-regex-proc_macros v3.6.0
[INFO] [stderr]    Compiling realfft v3.5.0
[INFO] [stderr]    Compiling rubato v0.15.0
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling lazy-regex v3.6.0
[INFO] [stderr]    Compiling regex-bnf-macro v0.1.1
[INFO] [stderr]    Compiling regex-bnf v0.1.2
[INFO] [stderr]    Compiling xsynth-soundfonts v0.4.0
[INFO] [stderr]    Compiling xsynth-core v0.4.0
[INFO] [stderr]    Compiling xsynth-realtime v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 29.58s
[INFO] running `Command { std: "docker" "inspect" "04dc83ef21ba3db15a565c2b7a2393ece5d1ac681b9c3ec6a66754a170d9a5a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04dc83ef21ba3db15a565c2b7a2393ece5d1ac681b9c3ec6a66754a170d9a5a0", kill_on_drop: false }`
[INFO] [stdout] 04dc83ef21ba3db15a565c2b7a2393ece5d1ac681b9c3ec6a66754a170d9a5a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3927db49619cb3ecf586424ba70a79be5ca4ac77303b6104e7e82845fd233ead
[INFO] running `Command { std: "docker" "start" "-a" "3927db49619cb3ecf586424ba70a79be5ca4ac77303b6104e7e82845fd233ead", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling midi-toolkit-rs-derive v0.1.0
[INFO] [stderr]    Compiling midi-toolkit-rs v0.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable 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] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `midi-toolkit-rs` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "3927db49619cb3ecf586424ba70a79be5ca4ac77303b6104e7e82845fd233ead", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3927db49619cb3ecf586424ba70a79be5ca4ac77303b6104e7e82845fd233ead", kill_on_drop: false }`
[INFO] [stdout] 3927db49619cb3ecf586424ba70a79be5ca4ac77303b6104e7e82845fd233ead
