[INFO] fetching crate overflower 0.4.6...
[INFO] testing overflower-0.4.6 against 1.76.0 for beta-1.77-1
[INFO] extracting crate overflower 0.4.6 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate overflower 0.4.6 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 overflower 0.4.6
[INFO] finished tweaking crates.io crate overflower 0.4.6
[INFO] tweaked toml for crates.io crate overflower 0.4.6 written to /workspace/builds/worker-2-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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded overflower_support v0.1.5
[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" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1283f998be0603bc02031232e511ab25797a7eda2a976a6ced10e1795f861366
[INFO] running `Command { std: "docker" "start" "-a" "1283f998be0603bc02031232e511ab25797a7eda2a976a6ced10e1795f861366", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1283f998be0603bc02031232e511ab25797a7eda2a976a6ced10e1795f861366", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1283f998be0603bc02031232e511ab25797a7eda2a976a6ced10e1795f861366", kill_on_drop: false }`
[INFO] [stdout] 1283f998be0603bc02031232e511ab25797a7eda2a976a6ced10e1795f861366
[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" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3209e572a3f72493d4cbc0f9b4cfd4e60e7e77a0d1df5343cc8e20efb8323ec0
[INFO] running `Command { std: "docker" "start" "-a" "3209e572a3f72493d4cbc0f9b4cfd4e60e7e77a0d1df5343cc8e20efb8323ec0", kill_on_drop: false }`
[INFO] [stderr]    Compiling overflower_support v0.1.5
[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/overflower_support-0.1.5/src/lib.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![feature(specialization)]
[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 `overflower_support` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "3209e572a3f72493d4cbc0f9b4cfd4e60e7e77a0d1df5343cc8e20efb8323ec0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3209e572a3f72493d4cbc0f9b4cfd4e60e7e77a0d1df5343cc8e20efb8323ec0", kill_on_drop: false }`
[INFO] [stdout] 3209e572a3f72493d4cbc0f9b4cfd4e60e7e77a0d1df5343cc8e20efb8323ec0
[INFO] testing overflower-0.4.6 against beta-2024-02-10 for beta-1.77-1
[INFO] extracting crate overflower 0.4.6 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate overflower 0.4.6 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 overflower 0.4.6
[INFO] finished tweaking crates.io crate overflower 0.4.6
[INFO] tweaked toml for crates.io crate overflower 0.4.6 written to /workspace/builds/worker-2-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]     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] warning: support for rustc plugins has been removed from rustc. library `overflower` should not specify `plugin = true`
[INFO] [stderr] warning: support for `plugin = true` will be removed from cargo in the future
[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-2024-02-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b3423ba614708ed5502b79c1c80408726eaaba41c67164e44d1901d5ad5b83b
[INFO] running `Command { std: "docker" "start" "-a" "0b3423ba614708ed5502b79c1c80408726eaaba41c67164e44d1901d5ad5b83b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b3423ba614708ed5502b79c1c80408726eaaba41c67164e44d1901d5ad5b83b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b3423ba614708ed5502b79c1c80408726eaaba41c67164e44d1901d5ad5b83b", kill_on_drop: false }`
[INFO] [stdout] 0b3423ba614708ed5502b79c1c80408726eaaba41c67164e44d1901d5ad5b83b
[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-2024-02-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e25d316d5c390e49601b8e268f78e6b350a045d464e935fd6433596727727a9
[INFO] running `Command { std: "docker" "start" "-a" "0e25d316d5c390e49601b8e268f78e6b350a045d464e935fd6433596727727a9", kill_on_drop: false }`
[INFO] [stderr] warning: support for rustc plugins has been removed from rustc. library `overflower` should not specify `plugin = true`
[INFO] [stderr] warning: support for `plugin = true` will be removed from cargo in the future
[INFO] [stderr]    Compiling overflower_support v0.1.5
[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/overflower_support-0.1.5/src/lib.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![feature(specialization)]
[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 `overflower_support` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "0e25d316d5c390e49601b8e268f78e6b350a045d464e935fd6433596727727a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e25d316d5c390e49601b8e268f78e6b350a045d464e935fd6433596727727a9", kill_on_drop: false }`
[INFO] [stdout] 0e25d316d5c390e49601b8e268f78e6b350a045d464e935fd6433596727727a9
