[INFO] fetching crate m68000 0.2.1...
[INFO] testing m68000-0.2.1 against 1.76.0 for beta-1.77-1
[INFO] extracting crate m68000 0.2.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate m68000 0.2.1 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 m68000 0.2.1
[INFO] finished tweaking crates.io crate m68000 0.2.1
[INFO] tweaked toml for crates.io crate m68000 0.2.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate m68000 0.2.1 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" "+1.76.0" "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] 67e6db0b91c754ca4c8b0e862b79c6121e4eaa7aac34581e3b1dc08462cf1a19
[INFO] running `Command { std: "docker" "start" "-a" "67e6db0b91c754ca4c8b0e862b79c6121e4eaa7aac34581e3b1dc08462cf1a19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "67e6db0b91c754ca4c8b0e862b79c6121e4eaa7aac34581e3b1dc08462cf1a19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67e6db0b91c754ca4c8b0e862b79c6121e4eaa7aac34581e3b1dc08462cf1a19", kill_on_drop: false }`
[INFO] [stdout] 67e6db0b91c754ca4c8b0e862b79c6121e4eaa7aac34581e3b1dc08462cf1a19
[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] 62f86c56067f54ee95b4f19de4dab9a12d991f1cca836a194af053467e513055
[INFO] running `Command { std: "docker" "start" "-a" "62f86c56067f54ee95b4f19de4dab9a12d991f1cca836a194af053467e513055", kill_on_drop: false }`
[INFO] [stderr]    Compiling m68000 v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 97 | #![feature(bigint_helper_methods)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:98:12
[INFO] [stdout]    |
[INFO] [stdout] 98 | #![feature(btree_extract_if)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `m68000` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "62f86c56067f54ee95b4f19de4dab9a12d991f1cca836a194af053467e513055", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62f86c56067f54ee95b4f19de4dab9a12d991f1cca836a194af053467e513055", kill_on_drop: false }`
[INFO] [stdout] 62f86c56067f54ee95b4f19de4dab9a12d991f1cca836a194af053467e513055
