[INFO] fetching crate stylers_macro 1.0.2...
[INFO] testing stylers_macro-1.0.2 against 1.95.0 for beta-1.96-2
[INFO] extracting crate stylers_macro 1.0.2 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate stylers_macro 1.0.2
[INFO] finished tweaking crates.io crate stylers_macro 1.0.2
[INFO] tweaked toml for crates.io crate stylers_macro 1.0.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate stylers_macro 1.0.2 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] [stderr]       Adding litrs v0.4.2 (available: v1.0.0)
[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] warning: `proc_macro` is deprecated in favor of `proc-macro` and will not work in the 2024 edition
[INFO] [stderr] (in the `stylers_macro` library target)
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded stylers_core v1.0.2
[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] 93bd1ef5c7e570f3aa3645402eb9bfeac547150ad6bbe6dfc40095d839e9d66f
[INFO] running `Command { std: "docker" "start" "-a" "93bd1ef5c7e570f3aa3645402eb9bfeac547150ad6bbe6dfc40095d839e9d66f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93bd1ef5c7e570f3aa3645402eb9bfeac547150ad6bbe6dfc40095d839e9d66f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93bd1ef5c7e570f3aa3645402eb9bfeac547150ad6bbe6dfc40095d839e9d66f", kill_on_drop: false }`
[INFO] [stdout] 93bd1ef5c7e570f3aa3645402eb9bfeac547150ad6bbe6dfc40095d839e9d66f
[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] eb4474cba183d596e82e2963102c93da7c830738cd364bb9572516d38aa02f62
[INFO] running `Command { std: "docker" "start" "-a" "eb4474cba183d596e82e2963102c93da7c830738cd364bb9572516d38aa02f62", kill_on_drop: false }`
[INFO] [stderr] warning: `proc_macro` is deprecated in favor of `proc-macro` and will not work in the 2024 edition
[INFO] [stderr] (in the `stylers_macro` library target)
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling cfg-if v1.0.4
[INFO] [stderr]    Compiling levenshtein v1.0.5
[INFO] [stderr]    Compiling zerocopy v0.8.48
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling litrs v0.4.2
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.6
[INFO] [stderr]    Compiling stylers_core v1.0.2
[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/stylers_core-1.0.2/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(extend_one)]
[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 `stylers_core` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "eb4474cba183d596e82e2963102c93da7c830738cd364bb9572516d38aa02f62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb4474cba183d596e82e2963102c93da7c830738cd364bb9572516d38aa02f62", kill_on_drop: false }`
[INFO] [stdout] eb4474cba183d596e82e2963102c93da7c830738cd364bb9572516d38aa02f62
