[INFO] fetching crate iterator_item 0.2.0...
[INFO] testing iterator_item-0.2.0 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate iterator_item 0.2.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate iterator_item 0.2.0
[INFO] finished tweaking crates.io crate iterator_item 0.2.0
[INFO] tweaked toml for crates.io crate iterator_item 0.2.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate iterator_item 0.2.0 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 45 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 47e4c6fa16a4c497beb8345ed2db4540d07bdb6f094649749a50ec1a927c04f6
[INFO] running `Command { std: "docker" "start" "-a" "47e4c6fa16a4c497beb8345ed2db4540d07bdb6f094649749a50ec1a927c04f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "47e4c6fa16a4c497beb8345ed2db4540d07bdb6f094649749a50ec1a927c04f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47e4c6fa16a4c497beb8345ed2db4540d07bdb6f094649749a50ec1a927c04f6", kill_on_drop: false }`
[INFO] [stdout] 47e4c6fa16a4c497beb8345ed2db4540d07bdb6f094649749a50ec1a927c04f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87b0da9760ba8bfd7e9fff28dcd7d02a6ffa28b64871801300874d17de811593
[INFO] running `Command { std: "docker" "start" "-a" "87b0da9760ba8bfd7e9fff28dcd7d02a6ffa28b64871801300874d17de811593", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling iterator_item_macros v0.1.0
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling iterator_item v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved imports `core::ops::Generator`, `core::ops::GeneratorState`
[INFO] [stdout]   --> src/lib.rs:81:21
[INFO] [stdout]    |
[INFO] [stdout] 81 |     use core::ops::{Generator, GeneratorState};
[INFO] [stdout]    |                     ^^^^^^^^^  ^^^^^^^^^^^^^^ no `GeneratorState` in `ops`
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     no `Generator` in `ops`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `generator_trait`
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(generator_trait, try_trait_v2)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `iterator_item` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "87b0da9760ba8bfd7e9fff28dcd7d02a6ffa28b64871801300874d17de811593", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87b0da9760ba8bfd7e9fff28dcd7d02a6ffa28b64871801300874d17de811593", kill_on_drop: false }`
[INFO] [stdout] 87b0da9760ba8bfd7e9fff28dcd7d02a6ffa28b64871801300874d17de811593