[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] testing sukovanej/rust-p-99 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsukovanej%2Frust-p-99" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sukovanej/rust-p-99 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-12/source/Cargo.toml
[INFO] crate git repo https://github.com/sukovanej/rust-p-99 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a11cbc8eae9b34b67f4d53a786c55fc157651f8f8cfea5d229ef68c27d8432a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0a11cbc8eae9b34b67f4d53a786c55fc157651f8f8cfea5d229ef68c27d8432a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a11cbc8eae9b34b67f4d53a786c55fc157651f8f8cfea5d229ef68c27d8432a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a11cbc8eae9b34b67f4d53a786c55fc157651f8f8cfea5d229ef68c27d8432a", kill_on_drop: false }`
[INFO] [stdout] 0a11cbc8eae9b34b67f4d53a786c55fc157651f8f8cfea5d229ef68c27d8432a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35b9b9c731f1ef8228c467d7fbf1170308fd69764c33362496a3b724d833aff7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "35b9b9c731f1ef8228c467d7fbf1170308fd69764c33362496a3b724d833aff7", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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] 207 |         T::Item: U
[INFO] [stdout]     |                  ^ not a trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: trait objects must include the `dyn` keyword
[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: add `dyn` keyword before this trait
[INFO] [stdout]     |
[INFO] [stdout] 204 |     fn my_elimite_consecutive_duplicates<T, U>(input: T) -> dyn Iterator<U>
[INFO] [stdout]     |                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[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] [stderr] error: could not compile `rust-99-problems` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "35b9b9c731f1ef8228c467d7fbf1170308fd69764c33362496a3b724d833aff7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35b9b9c731f1ef8228c467d7fbf1170308fd69764c33362496a3b724d833aff7", kill_on_drop: false }`
[INFO] [stdout] 35b9b9c731f1ef8228c467d7fbf1170308fd69764c33362496a3b724d833aff7