[INFO] fetching crate notation_midi 0.5.0...
[INFO] testing notation_midi-0.5.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate notation_midi 0.5.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate notation_midi 0.5.0
[INFO] finished tweaking crates.io crate notation_midi 0.5.0
[INFO] tweaked toml for crates.io crate notation_midi 0.5.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate notation_midi 0.5.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "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" "+1.91.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]     Updating crates.io index
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[INFO] [stderr]       Adding helgoboss-midi v0.2.0 (available: v0.4.0)
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[INFO] [stderr]       Adding midir v0.7.0 (available: v0.10.3)
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[INFO] [stderr]       Adding notation_model v0.5.0 (available: v0.6.0)
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8eab98acb25ebe2c952259118bf2a417239186b3700945b4635c4aac7a186a6b
[INFO] running `Command { std: "docker" "start" "-a" "8eab98acb25ebe2c952259118bf2a417239186b3700945b4635c4aac7a186a6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8eab98acb25ebe2c952259118bf2a417239186b3700945b4635c4aac7a186a6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8eab98acb25ebe2c952259118bf2a417239186b3700945b4635c4aac7a186a6b", kill_on_drop: false }`
[INFO] [stdout] 8eab98acb25ebe2c952259118bf2a417239186b3700945b4635c4aac7a186a6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23d404cecb55729ad00591ede015cc55c72127d79f2787b376de48677d557b4d
[INFO] running `Command { std: "docker" "start" "-a" "23d404cecb55729ad00591ede015cc55c72127d79f2787b376de48677d557b4d", kill_on_drop: false }`
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[INFO] [stderr]    Compiling serde_arrays v0.1.0
[INFO] [stderr]    Compiling notation_core v0.5.0
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[INFO] [stderr]    Compiling notation_fretted v0.5.0
[INFO] [stderr]    Compiling kira v0.5.3
[INFO] [stderr]    Compiling bevy_derive v0.6.0
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[INFO] [stderr]    Compiling notation_guitar v0.5.0
[INFO] [stderr]    Compiling notation_proto v0.5.0
[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/notation_proto-0.5.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(arc_new_cyclic)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `notation_proto` (lib) due to 1 previous error
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "23d404cecb55729ad00591ede015cc55c72127d79f2787b376de48677d557b4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23d404cecb55729ad00591ede015cc55c72127d79f2787b376de48677d557b4d", kill_on_drop: false }`
[INFO] [stdout] 23d404cecb55729ad00591ede015cc55c72127d79f2787b376de48677d557b4d
