[INFO] fetching crate doublify-toolkit 0.1.1...
[INFO] testing doublify-toolkit-0.1.1 against 1.75.0 for beta-1.76-1
[INFO] extracting crate doublify-toolkit 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate doublify-toolkit 0.1.1 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 doublify-toolkit 0.1.1
[INFO] finished tweaking crates.io crate doublify-toolkit 0.1.1
[INFO] tweaked toml for crates.io crate doublify-toolkit 0.1.1 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" "+1.75.0" "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-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] adc82ff93fbe6bfc14a30635efa42efe7d159d0810ef16214ba1f3670ba4571b
[INFO] running `Command { std: "docker" "start" "-a" "adc82ff93fbe6bfc14a30635efa42efe7d159d0810ef16214ba1f3670ba4571b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "adc82ff93fbe6bfc14a30635efa42efe7d159d0810ef16214ba1f3670ba4571b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adc82ff93fbe6bfc14a30635efa42efe7d159d0810ef16214ba1f3670ba4571b", kill_on_drop: false }`
[INFO] [stdout] adc82ff93fbe6bfc14a30635efa42efe7d159d0810ef16214ba1f3670ba4571b
[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" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f35017c91f8e39565af4d193b756497dab25b9437a73446c1161ba1e2db627b0
[INFO] running `Command { std: "docker" "start" "-a" "f35017c91f8e39565af4d193b756497dab25b9437a73446c1161ba1e2db627b0", kill_on_drop: false }`
[INFO] [stderr]    Compiling doublify-toolkit v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | #![feature(box_patterns)]
[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 `doublify-toolkit` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "f35017c91f8e39565af4d193b756497dab25b9437a73446c1161ba1e2db627b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f35017c91f8e39565af4d193b756497dab25b9437a73446c1161ba1e2db627b0", kill_on_drop: false }`
[INFO] [stdout] f35017c91f8e39565af4d193b756497dab25b9437a73446c1161ba1e2db627b0
[INFO] testing doublify-toolkit-0.1.1 against beta-2023-12-22 for beta-1.76-1
[INFO] extracting crate doublify-toolkit 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate doublify-toolkit 0.1.1 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 doublify-toolkit 0.1.1
[INFO] finished tweaking crates.io crate doublify-toolkit 0.1.1
[INFO] tweaked toml for crates.io crate doublify-toolkit 0.1.1 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-2023-12-22" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-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-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 53586b4ce95a474d42a22cbe2779bb416611d9a03fc32b438b36b48bd6599c76
[INFO] running `Command { std: "docker" "start" "-a" "53586b4ce95a474d42a22cbe2779bb416611d9a03fc32b438b36b48bd6599c76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "53586b4ce95a474d42a22cbe2779bb416611d9a03fc32b438b36b48bd6599c76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53586b4ce95a474d42a22cbe2779bb416611d9a03fc32b438b36b48bd6599c76", kill_on_drop: false }`
[INFO] [stdout] 53586b4ce95a474d42a22cbe2779bb416611d9a03fc32b438b36b48bd6599c76
[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-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ed950723f52a8277df3f19e85e315ca0ff7983f901e3954a33fb703ef9890e8
[INFO] running `Command { std: "docker" "start" "-a" "2ed950723f52a8277df3f19e85e315ca0ff7983f901e3954a33fb703ef9890e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling doublify-toolkit v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | #![feature(box_patterns)]
[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 `doublify-toolkit` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "2ed950723f52a8277df3f19e85e315ca0ff7983f901e3954a33fb703ef9890e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ed950723f52a8277df3f19e85e315ca0ff7983f901e3954a33fb703ef9890e8", kill_on_drop: false }`
[INFO] [stdout] 2ed950723f52a8277df3f19e85e315ca0ff7983f901e3954a33fb703ef9890e8
