[INFO] fetching crate freezable 0.1.8...
[INFO] testing freezable-0.1.8 against 1.75.0 for beta-1.76-1
[INFO] extracting crate freezable 0.1.8 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate freezable 0.1.8 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 freezable 0.1.8
[INFO] finished tweaking crates.io crate freezable 0.1.8
[INFO] tweaked toml for crates.io crate freezable 0.1.8 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] edea1062d4ddcadb3a14936319a70ce5173586e8e47be9e121adaf78bc589a71
[INFO] running `Command { std: "docker" "start" "-a" "edea1062d4ddcadb3a14936319a70ce5173586e8e47be9e121adaf78bc589a71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "edea1062d4ddcadb3a14936319a70ce5173586e8e47be9e121adaf78bc589a71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edea1062d4ddcadb3a14936319a70ce5173586e8e47be9e121adaf78bc589a71", kill_on_drop: false }`
[INFO] [stdout] edea1062d4ddcadb3a14936319a70ce5173586e8e47be9e121adaf78bc589a71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 1d3e9bd73d0c482d8a52edb740def748f86973da79846366d475402027b83015
[INFO] running `Command { std: "docker" "start" "-a" "1d3e9bd73d0c482d8a52edb740def748f86973da79846366d475402027b83015", kill_on_drop: false }`
[INFO] [stderr]    Compiling freezable v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hash_map::FrozenMap`
[INFO] [stdout]  --> src/frozen_std/collections/mod.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use hash_map::FrozenMap;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hash_set::FrozenSet`
[INFO] [stdout]  --> src/frozen_std/collections/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use hash_set::FrozenSet;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `freezable` (lib) due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "1d3e9bd73d0c482d8a52edb740def748f86973da79846366d475402027b83015", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d3e9bd73d0c482d8a52edb740def748f86973da79846366d475402027b83015", kill_on_drop: false }`
[INFO] [stdout] 1d3e9bd73d0c482d8a52edb740def748f86973da79846366d475402027b83015
[INFO] testing freezable-0.1.8 against beta-2023-12-22 for beta-1.76-1
[INFO] extracting crate freezable 0.1.8 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate freezable 0.1.8 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 freezable 0.1.8
[INFO] finished tweaking crates.io crate freezable 0.1.8
[INFO] tweaked toml for crates.io crate freezable 0.1.8 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] ee4a728eea023c2d40cadadc6a5cdcd9736b237f4dc0091037f35f07fdf2a12c
[INFO] running `Command { std: "docker" "start" "-a" "ee4a728eea023c2d40cadadc6a5cdcd9736b237f4dc0091037f35f07fdf2a12c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee4a728eea023c2d40cadadc6a5cdcd9736b237f4dc0091037f35f07fdf2a12c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee4a728eea023c2d40cadadc6a5cdcd9736b237f4dc0091037f35f07fdf2a12c", kill_on_drop: false }`
[INFO] [stdout] ee4a728eea023c2d40cadadc6a5cdcd9736b237f4dc0091037f35f07fdf2a12c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] a1eb7c589da2ae79b6dcffa431b11e1bd42d68aa9ae69423e286c27d1e00b171
[INFO] running `Command { std: "docker" "start" "-a" "a1eb7c589da2ae79b6dcffa431b11e1bd42d68aa9ae69423e286c27d1e00b171", kill_on_drop: false }`
[INFO] [stderr]    Compiling freezable v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hash_map::FrozenMap`
[INFO] [stdout]  --> src/frozen_std/collections/mod.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use hash_map::FrozenMap;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hash_set::FrozenSet`
[INFO] [stdout]  --> src/frozen_std/collections/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use hash_set::FrozenSet;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `freezable` (lib) due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "a1eb7c589da2ae79b6dcffa431b11e1bd42d68aa9ae69423e286c27d1e00b171", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1eb7c589da2ae79b6dcffa431b11e1bd42d68aa9ae69423e286c27d1e00b171", kill_on_drop: false }`
[INFO] [stdout] a1eb7c589da2ae79b6dcffa431b11e1bd42d68aa9ae69423e286c27d1e00b171
