[INFO] fetching crate fncmd 2.1.0...
[INFO] testing fncmd-2.1.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate fncmd 2.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate fncmd 2.1.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fncmd 2.1.0
[INFO] finished tweaking crates.io crate fncmd 2.1.0
[INFO] tweaked toml for crates.io crate fncmd 2.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate fncmd 2.1.0 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fncmd-impl v2.1.0
[INFO] [stderr]   Downloaded rustix v0.37.13
[INFO] [stderr]   Downloaded linux-raw-sys v0.3.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e2cbe7ccec3f0e5032ecf0daf0cb1e0d8ba23296060db8ff82b2d33e5b3aed3
[INFO] running `Command { std: "docker" "start" "-a" "8e2cbe7ccec3f0e5032ecf0daf0cb1e0d8ba23296060db8ff82b2d33e5b3aed3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e2cbe7ccec3f0e5032ecf0daf0cb1e0d8ba23296060db8ff82b2d33e5b3aed3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e2cbe7ccec3f0e5032ecf0daf0cb1e0d8ba23296060db8ff82b2d33e5b3aed3", kill_on_drop: false }`
[INFO] [stdout] 8e2cbe7ccec3f0e5032ecf0daf0cb1e0d8ba23296060db8ff82b2d33e5b3aed3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8398556b350665da4eb79b0570cb6dfe45ea4ebc5481d68e6accd12760c72832
[INFO] running `Command { std: "docker" "start" "-a" "8398556b350665da4eb79b0570cb6dfe45ea4ebc5481d68e6accd12760c72832", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_derive v1.0.159
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]    Compiling serde v1.0.159
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[INFO] [stderr]    Compiling rustix v0.37.13
[INFO] [stderr]    Compiling linux-raw-sys v0.3.3
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling camino v1.1.4
[INFO] [stderr]    Compiling semver v1.0.17
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling syn v2.0.15
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling anstyle-parse v0.2.0
[INFO] [stderr]    Compiling ryu v1.0.13
[INFO] [stderr]    Compiling anstyle v1.0.0
[INFO] [stderr]    Compiling clap_lex v0.4.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling is-terminal v0.4.7
[INFO] [stderr]    Compiling anstream v0.3.0
[INFO] [stderr]    Compiling clap_builder v4.2.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]    Compiling clap_derive v4.2.0
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling clap v4.2.4
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]    Compiling cargo-platform v0.1.2
[INFO] [stderr]    Compiling cargo_metadata v0.15.4
[INFO] [stderr]    Compiling fncmd-impl v2.1.0
[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-6f17d22bba15001f/fncmd-impl-2.1.0/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_span)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fncmd-impl` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "8398556b350665da4eb79b0570cb6dfe45ea4ebc5481d68e6accd12760c72832", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8398556b350665da4eb79b0570cb6dfe45ea4ebc5481d68e6accd12760c72832", kill_on_drop: false }`
[INFO] [stdout] 8398556b350665da4eb79b0570cb6dfe45ea4ebc5481d68e6accd12760c72832
[INFO] testing fncmd-2.1.0 against beta-2023-12-22 for beta-1.76-1
[INFO] extracting crate fncmd 2.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate fncmd 2.1.0 on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fncmd 2.1.0
[INFO] finished tweaking crates.io crate fncmd 2.1.0
[INFO] tweaked toml for crates.io crate fncmd 2.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate fncmd 2.1.0 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" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76f8de62e1fcd4b7f379150bd23f0ef0915a08f0d5ebd16e2d12c7cdc6cbacea
[INFO] running `Command { std: "docker" "start" "-a" "76f8de62e1fcd4b7f379150bd23f0ef0915a08f0d5ebd16e2d12c7cdc6cbacea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76f8de62e1fcd4b7f379150bd23f0ef0915a08f0d5ebd16e2d12c7cdc6cbacea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76f8de62e1fcd4b7f379150bd23f0ef0915a08f0d5ebd16e2d12c7cdc6cbacea", kill_on_drop: false }`
[INFO] [stdout] 76f8de62e1fcd4b7f379150bd23f0ef0915a08f0d5ebd16e2d12c7cdc6cbacea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78d5d0dfbacce6c0cb16e9887f3f41202d5576dc3170a3224eafc2e6a9fa47c6
[INFO] running `Command { std: "docker" "start" "-a" "78d5d0dfbacce6c0cb16e9887f3f41202d5576dc3170a3224eafc2e6a9fa47c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_derive v1.0.159
[INFO] [stderr]    Compiling serde v1.0.159
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling rustix v0.37.13
[INFO] [stderr]    Compiling linux-raw-sys v0.3.3
[INFO] [stderr]    Compiling camino v1.1.4
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]    Compiling semver v1.0.17
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling anstyle-parse v0.2.0
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling syn v2.0.15
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling ryu v1.0.13
[INFO] [stderr]    Compiling anstyle v1.0.0
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling clap_lex v0.4.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling is-terminal v0.4.7
[INFO] [stderr]    Compiling anstream v0.3.0
[INFO] [stderr]    Compiling clap_builder v4.2.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]    Compiling clap_derive v4.2.0
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling clap v4.2.4
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]    Compiling cargo-platform v0.1.2
[INFO] [stderr]    Compiling cargo_metadata v0.15.4
[INFO] [stderr]    Compiling fncmd-impl v2.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fncmd-impl-2.1.0/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_span)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fncmd-impl` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "78d5d0dfbacce6c0cb16e9887f3f41202d5576dc3170a3224eafc2e6a9fa47c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78d5d0dfbacce6c0cb16e9887f3f41202d5576dc3170a3224eafc2e6a9fa47c6", kill_on_drop: false }`
[INFO] [stdout] 78d5d0dfbacce6c0cb16e9887f3f41202d5576dc3170a3224eafc2e6a9fa47c6
