[INFO] fetching crate varianteq 0.5.0...
[INFO] testing varianteq-0.5.0 against 1.76.0 for beta-1.77-1
[INFO] extracting crate varianteq 0.5.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate varianteq 0.5.0 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate varianteq 0.5.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate varianteq 0.5.0
[INFO] tweaked toml for crates.io crate varianteq 0.5.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b1516cf81ede071a0a2ee872093b6277bc2e9e3697c070484e448e917d8c7916
[INFO] running `Command { std: "docker" "start" "-a" "b1516cf81ede071a0a2ee872093b6277bc2e9e3697c070484e448e917d8c7916", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b1516cf81ede071a0a2ee872093b6277bc2e9e3697c070484e448e917d8c7916", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1516cf81ede071a0a2ee872093b6277bc2e9e3697c070484e448e917d8c7916", kill_on_drop: false }`
[INFO] [stdout] b1516cf81ede071a0a2ee872093b6277bc2e9e3697c070484e448e917d8c7916
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc748d40c18f18292dbc2811034ef39f1a03f1235d909328ee105641ba9a4a7f
[INFO] running `Command { std: "docker" "start" "-a" "cc748d40c18f18292dbc2811034ef39f1a03f1235d909328ee105641ba9a4a7f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling varianteq v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 | #![feature(proc_macro_diagnostic)]
[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 `varianteq` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "cc748d40c18f18292dbc2811034ef39f1a03f1235d909328ee105641ba9a4a7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc748d40c18f18292dbc2811034ef39f1a03f1235d909328ee105641ba9a4a7f", kill_on_drop: false }`
[INFO] [stdout] cc748d40c18f18292dbc2811034ef39f1a03f1235d909328ee105641ba9a4a7f
[INFO] testing varianteq-0.5.0 against beta-2024-02-10 for beta-1.77-1
[INFO] extracting crate varianteq 0.5.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate varianteq 0.5.0 on toolchain beta-2024-02-10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate varianteq 0.5.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate varianteq 0.5.0
[INFO] tweaked toml for crates.io crate varianteq 0.5.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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-2024-02-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d18f149b722fd074a222ef939f9a1745eb37c9031c1df511a0a72701ffbc48b1
[INFO] running `Command { std: "docker" "start" "-a" "d18f149b722fd074a222ef939f9a1745eb37c9031c1df511a0a72701ffbc48b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d18f149b722fd074a222ef939f9a1745eb37c9031c1df511a0a72701ffbc48b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d18f149b722fd074a222ef939f9a1745eb37c9031c1df511a0a72701ffbc48b1", kill_on_drop: false }`
[INFO] [stdout] d18f149b722fd074a222ef939f9a1745eb37c9031c1df511a0a72701ffbc48b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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-2024-02-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b4386e09c48240e838d901601b7a685b83f695ad099a3991b86af50ed6accb1b
[INFO] running `Command { std: "docker" "start" "-a" "b4386e09c48240e838d901601b7a685b83f695ad099a3991b86af50ed6accb1b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling varianteq v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 | #![feature(proc_macro_diagnostic)]
[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 `varianteq` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "b4386e09c48240e838d901601b7a685b83f695ad099a3991b86af50ed6accb1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4386e09c48240e838d901601b7a685b83f695ad099a3991b86af50ed6accb1b", kill_on_drop: false }`
[INFO] [stdout] b4386e09c48240e838d901601b7a685b83f695ad099a3991b86af50ed6accb1b
