[INFO] cloning repository https://github.com/sukovanej/rust-p-99
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sukovanej/rust-p-99" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsukovanej%2Frust-p-99", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsukovanej%2Frust-p-99'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c7eb1557e46cc33834d8b2ba053cfa1fbc832598
[INFO] checking sukovanej/rust-p-99 against try#a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399 for pr-145770
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsukovanej%2Frust-p-99" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sukovanej/rust-p-99
[INFO] finished tweaking git repo https://github.com/sukovanej/rust-p-99
[INFO] tweaked toml for git repo https://github.com/sukovanej/rust-p-99 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sukovanej/rust-p-99 on toolchain a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sukovanej/rust-p-99 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" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51c43e83ce2bb9f6ba95422331874c02f6791ae5b510aba1a34aca97d0d0d947
[INFO] running `Command { std: "docker" "start" "-a" "51c43e83ce2bb9f6ba95422331874c02f6791ae5b510aba1a34aca97d0d0d947", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51c43e83ce2bb9f6ba95422331874c02f6791ae5b510aba1a34aca97d0d0d947", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51c43e83ce2bb9f6ba95422331874c02f6791ae5b510aba1a34aca97d0d0d947", kill_on_drop: false }`
[INFO] [stdout] 51c43e83ce2bb9f6ba95422331874c02f6791ae5b510aba1a34aca97d0d0d947
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c7081c9b4b1ccc65590e6150436af013b376310bdf9933bb7be923def540f006
[INFO] running `Command { std: "docker" "start" "-a" "c7081c9b4b1ccc65590e6150436af013b376310bdf9933bb7be923def540f006", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-99-problems v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0404]: expected trait, found type parameter `U`
[INFO] [stdout]    --> src/main.rs:207:18
[INFO] [stdout]     |
[INFO] [stdout] 204 |     fn my_elimite_consecutive_duplicates<T, U>(input: T) -> Iterator<U>
[INFO] [stdout]     |                                             - found this type parameter
[INFO] [stdout] ...
[INFO] [stdout] 207 |         T::Item: U
[INFO] [stdout]     |                  ^ not a trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[INFO] [stdout]    --> src/main.rs:204:61
[INFO] [stdout]     |
[INFO] [stdout] 204 |     fn my_elimite_consecutive_duplicates<T, U>(input: T) -> Iterator<U>
[INFO] [stdout]     |                                                             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `impl Iterator<U>` to return an opaque type, as long as you return a single underlying type
[INFO] [stdout]     |
[INFO] [stdout] 204 |     fn my_elimite_consecutive_duplicates<T, U>(input: T) -> impl Iterator<U>
[INFO] [stdout]     |                                                             ++++
[INFO] [stdout] help: alternatively, you can return an owned trait object
[INFO] [stdout]     |
[INFO] [stdout] 204 |     fn my_elimite_consecutive_duplicates<T, U>(input: T) -> Box<dyn Iterator<U>>
[INFO] [stdout]     |                                                             +++++++            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0404, E0782.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-99-problems` (bin "rust-99-problems" test) due to 2 previous errors
[INFO] [stdout] For more information about an error, try `rustc --explain E0404`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rust-99-problems` (bin "rust-99-problems") due to 2 previous errors
[INFO] [stdout] error[E0404]: expected trait, found type parameter `U`
[INFO] [stdout]    --> src/main.rs:207:18
[INFO] [stdout]     |
[INFO] [stdout] 204 |     fn my_elimite_consecutive_duplicates<T, U>(input: T) -> Iterator<U>
[INFO] [stdout]     |                                             - found this type parameter
[INFO] [stdout] ...
[INFO] [stdout] 207 |         T::Item: U
[INFO] [stdout]     |                  ^ not a trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[INFO] [stdout]    --> src/main.rs:204:61
[INFO] [stdout]     |
[INFO] [stdout] 204 |     fn my_elimite_consecutive_duplicates<T, U>(input: T) -> Iterator<U>
[INFO] [stdout]     |                                                             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `impl Iterator<U>` to return an opaque type, as long as you return a single underlying type
[INFO] [stdout]     |
[INFO] [stdout] 204 |     fn my_elimite_consecutive_duplicates<T, U>(input: T) -> impl Iterator<U>
[INFO] [stdout]     |                                                             ++++
[INFO] [stdout] help: alternatively, you can return an owned trait object
[INFO] [stdout]     |
[INFO] [stdout] 204 |     fn my_elimite_consecutive_duplicates<T, U>(input: T) -> Box<dyn Iterator<U>>
[INFO] [stdout]     |                                                             +++++++            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0404, E0782.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0404`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c7081c9b4b1ccc65590e6150436af013b376310bdf9933bb7be923def540f006", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7081c9b4b1ccc65590e6150436af013b376310bdf9933bb7be923def540f006", kill_on_drop: false }`
[INFO] [stdout] c7081c9b4b1ccc65590e6150436af013b376310bdf9933bb7be923def540f006
