[INFO] fetching crate motus 0.2.0...
[INFO] testing motus-0.2.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate motus 0.2.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate motus 0.2.0
[INFO] finished tweaking crates.io crate motus 0.2.0
[INFO] tweaked toml for crates.io crate motus 0.2.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate motus 0.2.0 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] crate crates.io crate motus 0.2.0 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" "+1.91.0" "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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] c2e61b60d49dd3e19f6cb5c9e5dd50c44799a88a54b160f729a3d1f5b22d4050
[INFO] running `Command { std: "docker" "start" "-a" "c2e61b60d49dd3e19f6cb5c9e5dd50c44799a88a54b160f729a3d1f5b22d4050", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2e61b60d49dd3e19f6cb5c9e5dd50c44799a88a54b160f729a3d1f5b22d4050", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2e61b60d49dd3e19f6cb5c9e5dd50c44799a88a54b160f729a3d1f5b22d4050", kill_on_drop: false }`
[INFO] [stdout] c2e61b60d49dd3e19f6cb5c9e5dd50c44799a88a54b160f729a3d1f5b22d4050
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 0f119d0f6aacba5565318d6bf507ead59785a53f48259d5a2b9533d3248e92a3
[INFO] running `Command { std: "docker" "start" "-a" "0f119d0f6aacba5565318d6bf507ead59785a53f48259d5a2b9533d3248e92a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
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[INFO] [stderr]    Compiling bitflags v1.3.2
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[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[INFO] [stderr]    Compiling ident_case v1.0.1
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[INFO] [stderr]    Compiling simd-adler32 v0.3.5
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[INFO] [stderr]    Compiling num-traits v0.2.15
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[INFO] [stderr]    Compiling addr2line v0.19.0
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[INFO] [stderr]    Compiling ryu v1.0.13
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[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling clap_builder v4.2.7
[INFO] [stderr]    Compiling fancy-regex v0.11.0
[INFO] [stderr]    Compiling term-table v1.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.163
[INFO] [stderr]    Compiling clap_derive v4.2.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]    Compiling x11rb-protocol v0.10.0
[INFO] [stderr]    Compiling darling_core v0.14.4
[INFO] [stderr]    Compiling clap v4.2.7
[INFO] [stderr]    Compiling clap_complete v4.2.3
[INFO] [stderr]    Compiling darling_macro v0.14.4
[INFO] [stderr]    Compiling darling v0.14.4
[INFO] [stderr]    Compiling derive_builder_core v0.12.0
[INFO] [stderr]    Compiling derive_builder_macro v0.12.0
[INFO] [stderr]    Compiling derive_builder v0.12.0
[INFO] [stderr]    Compiling zxcvbn v2.2.2
[INFO] [stderr]    Compiling x11rb v0.10.1
[INFO] [stderr]    Compiling arboard v3.2.0
[INFO] [stderr]    Compiling serde_spanned v0.6.1
[INFO] [stderr]    Compiling toml_datetime v0.6.1
[INFO] [stderr]    Compiling os_info v3.7.0
[INFO] [stderr]    Compiling toml_edit v0.19.8
[INFO] [stderr]    Compiling toml v0.7.3
[INFO] [stderr]    Compiling human-panic v1.1.4
[INFO] [stderr]    Compiling motus v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iter_intersperse)]
[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 `motus` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "0f119d0f6aacba5565318d6bf507ead59785a53f48259d5a2b9533d3248e92a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f119d0f6aacba5565318d6bf507ead59785a53f48259d5a2b9533d3248e92a3", kill_on_drop: false }`
[INFO] [stdout] 0f119d0f6aacba5565318d6bf507ead59785a53f48259d5a2b9533d3248e92a3