[INFO] cloning repository https://github.com/fahrenkrug/rust_learn_book_chapter10 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fahrenkrug/rust_learn_book_chapter10" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffahrenkrug%2Frust_learn_book_chapter10", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffahrenkrug%2Frust_learn_book_chapter10'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 9400baa14c0b8985e0e59bd2196a460ee43b3c6c [INFO] checking fahrenkrug/rust_learn_book_chapter10 against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffahrenkrug%2Frust_learn_book_chapter10" "/workspace/builds/worker-14/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/fahrenkrug/rust_learn_book_chapter10 on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/fahrenkrug/rust_learn_book_chapter10 [INFO] finished tweaking git repo https://github.com/fahrenkrug/rust_learn_book_chapter10 [INFO] tweaked toml for git repo https://github.com/fahrenkrug/rust_learn_book_chapter10 written to /workspace/builds/worker-14/source/Cargo.toml [INFO] crate git repo https://github.com/fahrenkrug/rust_learn_book_chapter10 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 158c22437ba2f626e594a883c646a1e264e76f31a1fa5bf69d435aa7f06c3369 [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" "158c22437ba2f626e594a883c646a1e264e76f31a1fa5bf69d435aa7f06c3369", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "158c22437ba2f626e594a883c646a1e264e76f31a1fa5bf69d435aa7f06c3369", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "158c22437ba2f626e594a883c646a1e264e76f31a1fa5bf69d435aa7f06c3369", kill_on_drop: false }` [INFO] [stdout] 158c22437ba2f626e594a883c646a1e264e76f31a1fa5bf69d435aa7f06c3369 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0fbff42ebda3d0e3b5b9ad5cd7b2758a1521eb1ca4ced8478ee9c65ea2b38fd7 [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" "0fbff42ebda3d0e3b5b9ad5cd7b2758a1521eb1ca4ced8478ee9c65ea2b38fd7", kill_on_drop: false }` [INFO] [stderr] Checking chapter_10_generics_traits_lifetimes v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error: format argument must be a string literal [INFO] [stdout] --> src/main.rs:249:18 [INFO] [stdout] | [INFO] [stdout] 249 | println!(summary.summarize()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: you might be missing a string literal to format with [INFO] [stdout] | [INFO] [stdout] 249 | println!("{}", summary.summarize()); [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::iter::Sum` [INFO] [stdout] --> src/main.rs:86:9 [INFO] [stdout] | [INFO] [stdout] 86 | use std::iter::Sum; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: format argument must be a string literal [INFO] [stdout] --> src/main.rs:249:18 [INFO] [stdout] | [INFO] [stdout] 249 | println!(summary.summarize()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: you might be missing a string literal to format with [INFO] [stdout] | [INFO] [stdout] 249 | println!("{}", summary.summarize()); [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::iter::Sum` [INFO] [stdout] --> src/main.rs:86:9 [INFO] [stdout] | [INFO] [stdout] 86 | use std::iter::Sum; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/main.rs:5:23 [INFO] [stdout] | [INFO] [stdout] 2 | fn largest(list: &[T]) -> &T { [INFO] [stdout] | - this type parameter [INFO] [stdout] ... [INFO] [stdout] 5 | if item > largest { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | expected type parameter `T`, found `&T` [INFO] [stdout] | help: consider dereferencing the borrow: `*largest` [INFO] [stdout] | [INFO] [stdout] = note: expected type parameter `T` [INFO] [stdout] found reference `&T` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/main.rs:6:27 [INFO] [stdout] | [INFO] [stdout] 2 | fn largest(list: &[T]) -> &T { [INFO] [stdout] | - this type parameter [INFO] [stdout] ... [INFO] [stdout] 6 | largest = item; [INFO] [stdout] | ^^^^ [INFO] [stdout] | | [INFO] [stdout] | expected `&T`, found type parameter `T` [INFO] [stdout] | help: consider borrowing here: `&item` [INFO] [stdout] | [INFO] [stdout] = note: expected reference `&T` [INFO] [stdout] found type parameter `T` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/main.rs:5:23 [INFO] [stdout] | [INFO] [stdout] 2 | fn largest(list: &[T]) -> &T { [INFO] [stdout] | - this type parameter [INFO] [stdout] ... [INFO] [stdout] 5 | if item > largest { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | expected type parameter `T`, found `&T` [INFO] [stdout] | help: consider dereferencing the borrow: `*largest` [INFO] [stdout] | [INFO] [stdout] = note: expected type parameter `T` [INFO] [stdout] found reference `&T` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/main.rs:6:27 [INFO] [stdout] | [INFO] [stdout] 2 | fn largest(list: &[T]) -> &T { [INFO] [stdout] | - this type parameter [INFO] [stdout] ... [INFO] [stdout] 6 | largest = item; [INFO] [stdout] | ^^^^ [INFO] [stdout] | | [INFO] [stdout] | expected `&T`, found type parameter `T` [INFO] [stdout] | help: consider borrowing here: `&item` [INFO] [stdout] | [INFO] [stdout] = note: expected reference `&T` [INFO] [stdout] found type parameter `T` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stderr] error: could not compile `chapter_10_generics_traits_lifetimes` [INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] [INFO] [stdout] For more information about this error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "0fbff42ebda3d0e3b5b9ad5cd7b2758a1521eb1ca4ced8478ee9c65ea2b38fd7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0fbff42ebda3d0e3b5b9ad5cd7b2758a1521eb1ca4ced8478ee9c65ea2b38fd7", kill_on_drop: false }` [INFO] [stdout] 0fbff42ebda3d0e3b5b9ad5cd7b2758a1521eb1ca4ced8478ee9c65ea2b38fd7