[INFO] fetching crate generator_extensions 0.1.1...
[INFO] testing generator_extensions-0.1.1 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate generator_extensions 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate generator_extensions 0.1.1
[INFO] finished tweaking crates.io crate generator_extensions 0.1.1
[INFO] tweaked toml for crates.io crate generator_extensions 0.1.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate generator_extensions 0.1.1 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a565b396dabfb2c3c97ef31128c40b1189d72f78ed8f08d0b6a96832baaf1cb
[INFO] running `Command { std: "docker" "start" "-a" "6a565b396dabfb2c3c97ef31128c40b1189d72f78ed8f08d0b6a96832baaf1cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a565b396dabfb2c3c97ef31128c40b1189d72f78ed8f08d0b6a96832baaf1cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a565b396dabfb2c3c97ef31128c40b1189d72f78ed8f08d0b6a96832baaf1cb", kill_on_drop: false }`
[INFO] [stdout] 6a565b396dabfb2c3c97ef31128c40b1189d72f78ed8f08d0b6a96832baaf1cb
[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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e88df4d10a2753dcf4c9e666b261a5532f1933da19d380ecc57a2446750d54d4
[INFO] running `Command { std: "docker" "start" "-a" "e88df4d10a2753dcf4c9e666b261a5532f1933da19d380ecc57a2446750d54d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling generator_extensions v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved imports `core::ops::Generator`, `core::ops::GeneratorState`
[INFO] [stdout]   --> src/gen.rs:12:17
[INFO] [stdout]    |
[INFO] [stdout] 12 | 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[E0432]: unresolved imports `core::ops::Generator`, `core::ops::GeneratorState`
[INFO] [stdout]  --> src/iter.rs:9:17
[INFO] [stdout]   |
[INFO] [stdout] 9 | 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[E0432]: unresolved imports `core::ops::Generator`, `core::ops::GeneratorState`
[INFO] [stdout]   --> src/lib.rs:62:21
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub 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:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(generator_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0220]: associated type `Yield` not found for `G`
[INFO] [stdout]   --> src/gen.rs:58:46
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn expect_yield(&mut self, arg: R) -> G::Yield {
[INFO] [stdout]    |                                              ^^^^^ associated type `Yield` not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0220]: associated type `Return` not found for `G`
[INFO] [stdout]   --> src/gen.rs:69:49
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn expect_complete(&mut self, arg: R) -> G::Return {
[INFO] [stdout]    |                                                 ^^^^^^ associated type `Return` not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0220, E0432, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0220`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `generator_extensions` (lib) due to 6 previous errors
[INFO] running `Command { std: "docker" "inspect" "e88df4d10a2753dcf4c9e666b261a5532f1933da19d380ecc57a2446750d54d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e88df4d10a2753dcf4c9e666b261a5532f1933da19d380ecc57a2446750d54d4", kill_on_drop: false }`
[INFO] [stdout] e88df4d10a2753dcf4c9e666b261a5532f1933da19d380ecc57a2446750d54d4