[INFO] fetching crate tanuki-common 0.0.1...
[INFO] testing tanuki-common-0.0.1 against 1.95.0 for beta-1.96-2
[INFO] extracting crate tanuki-common 0.0.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate tanuki-common 0.0.1
[INFO] finished tweaking crates.io crate tanuki-common 0.0.1
[INFO] tweaked toml for crates.io crate tanuki-common 0.0.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tanuki-common 0.0.1 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 tanuki-common 0.0.1 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 ryu v1.0.21
[INFO] [stderr]   Downloaded itoa v1.0.16
[INFO] [stderr]   Downloaded delegate v0.13.5
[INFO] [stderr]   Downloaded mqtt-protocol-core v0.7.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] dc43499d17a26b8c8e1f6d78795c7bbb0422b4148bcfad69ab84074acf37044b
[INFO] running `Command { std: "docker" "start" "-a" "dc43499d17a26b8c8e1f6d78795c7bbb0422b4148bcfad69ab84074acf37044b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc43499d17a26b8c8e1f6d78795c7bbb0422b4148bcfad69ab84074acf37044b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc43499d17a26b8c8e1f6d78795c7bbb0422b4148bcfad69ab84074acf37044b", kill_on_drop: false }`
[INFO] [stdout] dc43499d17a26b8c8e1f6d78795c7bbb0422b4148bcfad69ab84074acf37044b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b030bf026e408a2832b15736787df72c28c8dbb6f591fdc09aae38157a5e8d9a
[INFO] running `Command { std: "docker" "start" "-a" "b030bf026e408a2832b15736787df72c28c8dbb6f591fdc09aae38157a5e8d9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling itoa v1.0.16
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling indexmap v2.12.1
[INFO] [stderr]    Compiling castaway v0.2.4
[INFO] [stderr]    Compiling foldhash v0.2.0
[INFO] [stderr]    Compiling ryu v1.0.21
[INFO] [stderr]    Compiling strum v0.27.2
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr]    Compiling proc-macro-error-attr2 v2.0.0
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling proc-macro-error2 v2.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling thiserror-impl v2.0.18
[INFO] [stderr]    Compiling num_enum_derive v0.7.5
[INFO] [stderr]    Compiling enum_dispatch v0.3.13
[INFO] [stderr]    Compiling strum_macros v0.27.2
[INFO] [stderr]    Compiling delegate v0.13.5
[INFO] [stderr]    Compiling getset v0.1.6
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling num_enum v0.7.5
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]    Compiling darling v0.20.11
[INFO] [stderr]    Compiling derive_builder_core v0.20.2
[INFO] [stderr]    Compiling derive_builder_macro v0.20.2
[INFO] [stderr]    Compiling derive_builder v0.20.2
[INFO] [stderr]    Compiling chrono v0.4.42
[INFO] [stderr]    Compiling mqtt-protocol-core v0.7.5
[INFO] [stderr]    Compiling compact_str v0.9.0
[INFO] [stderr]    Compiling tanuki-common v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(macro_attr, macro_derive, str_split_remainder)]
[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 `tanuki-common` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "b030bf026e408a2832b15736787df72c28c8dbb6f591fdc09aae38157a5e8d9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b030bf026e408a2832b15736787df72c28c8dbb6f591fdc09aae38157a5e8d9a", kill_on_drop: false }`
[INFO] [stdout] b030bf026e408a2832b15736787df72c28c8dbb6f591fdc09aae38157a5e8d9a
