[INFO] fetching crate gac 0.1.2...
[INFO] testing gac-0.1.2 against 1.76.0 for beta-1.77-1
[INFO] extracting crate gac 0.1.2 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate gac 0.1.2 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] removed /workspace/builds/worker-5-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate gac 0.1.2
[INFO] finished tweaking crates.io crate gac 0.1.2
[INFO] tweaked toml for crates.io crate gac 0.1.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate gac 0.1.2 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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] b3b018de44c9a58a7526cb8a22b22c223d43b00c662236008553e0416e8b07d5
[INFO] running `Command { std: "docker" "start" "-a" "b3b018de44c9a58a7526cb8a22b22c223d43b00c662236008553e0416e8b07d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3b018de44c9a58a7526cb8a22b22c223d43b00c662236008553e0416e8b07d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3b018de44c9a58a7526cb8a22b22c223d43b00c662236008553e0416e8b07d5", kill_on_drop: false }`
[INFO] [stdout] b3b018de44c9a58a7526cb8a22b22c223d43b00c662236008553e0416e8b07d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] db70d6d3ddd5cf6bd03f5bc1259d0efdfc15726636da2b416bc7fe384ef72610
[INFO] running `Command { std: "docker" "start" "-a" "db70d6d3ddd5cf6bd03f5bc1259d0efdfc15726636da2b416bc7fe384ef72610", kill_on_drop: false }`
[INFO] [stderr]    Compiling gac v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(hash_raw_entry, iter_intersperse, str_split_whitespace_remainder)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(hash_raw_entry, iter_intersperse, str_split_whitespace_remainder)]
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:46
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(hash_raw_entry, iter_intersperse, str_split_whitespace_remainder)]
[INFO] [stdout]   |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `gac` (bin "gac") due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "db70d6d3ddd5cf6bd03f5bc1259d0efdfc15726636da2b416bc7fe384ef72610", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db70d6d3ddd5cf6bd03f5bc1259d0efdfc15726636da2b416bc7fe384ef72610", kill_on_drop: false }`
[INFO] [stdout] db70d6d3ddd5cf6bd03f5bc1259d0efdfc15726636da2b416bc7fe384ef72610
