[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#84addd32a13fa2d3f62fe5d99031611147b7fb13 for pr-147565 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsukovanej%2Frust-p-99" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-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-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/sukovanej/rust-p-99 on toolchain 84addd32a13fa2d3f62fe5d99031611147b7fb13 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+84addd32a13fa2d3f62fe5d99031611147b7fb13" "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" "+84addd32a13fa2d3f62fe5d99031611147b7fb13" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+84addd32a13fa2d3f62fe5d99031611147b7fb13" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] deeba0a7e781e715ef02b1a23466b077fd61542d381ecbf915ea0fa77bf2f172 [INFO] running `Command { std: "docker" "start" "-a" "deeba0a7e781e715ef02b1a23466b077fd61542d381ecbf915ea0fa77bf2f172", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "deeba0a7e781e715ef02b1a23466b077fd61542d381ecbf915ea0fa77bf2f172", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "deeba0a7e781e715ef02b1a23466b077fd61542d381ecbf915ea0fa77bf2f172", kill_on_drop: false }` [INFO] [stdout] deeba0a7e781e715ef02b1a23466b077fd61542d381ecbf915ea0fa77bf2f172 [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+84addd32a13fa2d3f62fe5d99031611147b7fb13" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6b42757d2f8044cdf303635304b5863e9cb11e3e67311c091f08d0ab0891d4a3 [INFO] running `Command { std: "docker" "start" "-a" "6b42757d2f8044cdf303635304b5863e9cb11e3e67311c091f08d0ab0891d4a3", 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(input: T) -> Iterator [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[E0404]: expected trait, found type parameter `U` [INFO] [stdout] --> src/main.rs:207:18 [INFO] [stdout] | [INFO] [stdout] 204 | fn my_elimite_consecutive_duplicates(input: T) -> Iterator [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(input: T) -> Iterator [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: use `impl Iterator` to return an opaque type, as long as you return a single underlying type [INFO] [stdout] | [INFO] [stdout] 204 | fn my_elimite_consecutive_duplicates(input: T) -> impl Iterator [INFO] [stdout] | ++++ [INFO] [stdout] help: alternatively, you can return an owned trait object [INFO] [stdout] | [INFO] [stdout] 204 | fn my_elimite_consecutive_duplicates(input: T) -> Box> [INFO] [stdout] | +++++++ + [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(input: T) -> Iterator [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: use `impl Iterator` to return an opaque type, as long as you return a single underlying type [INFO] [stdout] | [INFO] [stdout] 204 | fn my_elimite_consecutive_duplicates(input: T) -> impl Iterator [INFO] [stdout] | ++++ [INFO] [stdout] help: alternatively, you can return an owned trait object [INFO] [stdout] | [INFO] [stdout] 204 | fn my_elimite_consecutive_duplicates(input: T) -> Box> [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] [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` (bin "rust-99-problems" test) due to 2 previous errors [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] running `Command { std: "docker" "inspect" "6b42757d2f8044cdf303635304b5863e9cb11e3e67311c091f08d0ab0891d4a3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6b42757d2f8044cdf303635304b5863e9cb11e3e67311c091f08d0ab0891d4a3", kill_on_drop: false }` [INFO] [stdout] 6b42757d2f8044cdf303635304b5863e9cb11e3e67311c091f08d0ab0891d4a3