[INFO] fetching crate gen-iter 0.3.0...
[INFO] testing gen-iter-0.3.0 against beta-2023-04-20 for beta-1.70-1
[INFO] extracting crate gen-iter 0.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate gen-iter 0.3.0 on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gen-iter 0.3.0
[INFO] finished tweaking crates.io crate gen-iter 0.3.0
[INFO] tweaked toml for crates.io crate gen-iter 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97e2cb8224b8e0a5555f4e532135ebd41cd8b93b3e84f52a4d0a37444dace0ab
[INFO] running `Command { std: "docker" "start" "-a" "97e2cb8224b8e0a5555f4e532135ebd41cd8b93b3e84f52a4d0a37444dace0ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97e2cb8224b8e0a5555f4e532135ebd41cd8b93b3e84f52a4d0a37444dace0ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97e2cb8224b8e0a5555f4e532135ebd41cd8b93b3e84f52a4d0a37444dace0ab", kill_on_drop: false }`
[INFO] [stdout] 97e2cb8224b8e0a5555f4e532135ebd41cd8b93b3e84f52a4d0a37444dace0ab
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31627ae22727c2ac13cccfde397c2bb361da8490b33ac826663f9af832554f0c
[INFO] running `Command { std: "docker" "start" "-a" "31627ae22727c2ac13cccfde397c2bb361da8490b33ac826663f9af832554f0c", kill_on_drop: false }`
[INFO] [stderr]    Compiling gen-iter v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:60:1
[INFO] [stdout]    |
[INFO] [stdout] 60 | #![feature(generators, generator_trait)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:60:24
[INFO] [stdout]    |
[INFO] [stdout] 60 | #![feature(generators, generator_trait)]
[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 `gen-iter` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "31627ae22727c2ac13cccfde397c2bb361da8490b33ac826663f9af832554f0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31627ae22727c2ac13cccfde397c2bb361da8490b33ac826663f9af832554f0c", kill_on_drop: false }`
[INFO] [stdout] 31627ae22727c2ac13cccfde397c2bb361da8490b33ac826663f9af832554f0c
