[INFO] cloning repository https://github.com/upenn-cis198-2018f/Lecture6
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/upenn-cis198-2018f/Lecture6" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fupenn-cis198-2018f%2FLecture6", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fupenn-cis198-2018f%2FLecture6'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a095ded29421886fed129ceb8acfa986ad63c8f8
[INFO] checking upenn-cis198-2018f/Lecture6 against e3d12f3322cb00126b2208c6b9df3ac4467951f5 for pr-159706
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fupenn-cis198-2018f%2FLecture6" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/upenn-cis198-2018f/Lecture6
[INFO] finished tweaking git repo https://github.com/upenn-cis198-2018f/Lecture6
[INFO] tweaked toml for git repo https://github.com/upenn-cis198-2018f/Lecture6 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/upenn-cis198-2018f/Lecture6 on toolchain e3d12f3322cb00126b2208c6b9df3ac4467951f5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e3d12f3322cb00126b2208c6b9df3ac4467951f5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/upenn-cis198-2018f/Lecture6 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" "+e3d12f3322cb00126b2208c6b9df3ac4467951f5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `lecture6` (manifest) generated 1 warning
[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-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:00c5645b54fe3ce5dae1417175e3c7fb6a6646c021d554ecd63a097b8b9f3602" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] c65af66593345bce58e1cbf1ef8d9ad0e6d0904e51c36aac2d17aea809d77d43
[INFO] running `Command { std: "docker" "start" "c65af66593345bce58e1cbf1ef8d9ad0e6d0904e51c36aac2d17aea809d77d43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c65af66593345bce58e1cbf1ef8d9ad0e6d0904e51c36aac2d17aea809d77d43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c65af66593345bce58e1cbf1ef8d9ad0e6d0904e51c36aac2d17aea809d77d43" "/opt/rustwide/cargo-home/bin/cargo" "+e3d12f3322cb00126b2208c6b9df3ac4467951f5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c65af66593345bce58e1cbf1ef8d9ad0e6d0904e51c36aac2d17aea809d77d43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c65af66593345bce58e1cbf1ef8d9ad0e6d0904e51c36aac2d17aea809d77d43" "/opt/rustwide/cargo-home/bin/cargo" "+e3d12f3322cb00126b2208c6b9df3ac4467951f5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `lecture6` (manifest) generated 1 warning
[INFO] [stderr]     Checking lecture6 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/generics.rs:167:24
[INFO] [stdout]     |
[INFO] [stdout] 167 |     fn has_edge(&self, &N, &N) -> bool;
[INFO] [stdout]     |                        ^^ help: try naming the parameter or explicitly ignoring it: `_: &N`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2018/trait-fn-parameters.html>
[INFO] [stdout]     = note: `#[warn(anonymous_parameters)]` (part of `#[warn(rust_2018_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/generics.rs:167:28
[INFO] [stdout]     |
[INFO] [stdout] 167 |     fn has_edge(&self, &N, &N) -> bool;
[INFO] [stdout]     |                            ^^ help: try naming the parameter or explicitly ignoring it: `_: &N`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2018/trait-fn-parameters.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/more_utility_traits.rs:245:13
[INFO] [stdout]     |
[INFO] [stdout] 245 |     fn from(T) -> Self;
[INFO] [stdout]     |             ^ help: try naming the parameter or explicitly ignoring it: `_: T`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2018/trait-fn-parameters.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/generics.rs:167:24
[INFO] [stdout]     |
[INFO] [stdout] 167 |     fn has_edge(&self, &N, &N) -> bool;
[INFO] [stdout]     |                        ^^ help: try naming the parameter or explicitly ignoring it: `_: &N`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2018/trait-fn-parameters.html>
[INFO] [stdout]     = note: `#[warn(anonymous_parameters)]` (part of `#[warn(rust_2018_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/generics.rs:167:28
[INFO] [stdout]     |
[INFO] [stdout] 167 |     fn has_edge(&self, &N, &N) -> bool;
[INFO] [stdout]     |                            ^^ help: try naming the parameter or explicitly ignoring it: `_: &N`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2018/trait-fn-parameters.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/more_utility_traits.rs:245:13
[INFO] [stdout]     |
[INFO] [stdout] 245 |     fn from(T) -> Self;
[INFO] [stdout]     |             ^ help: try naming the parameter or explicitly ignoring it: `_: T`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2018/trait-fn-parameters.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Graph` is never used
[INFO] [stdout]    --> src/generics.rs:166:7
[INFO] [stdout]     |
[INFO] [stdout] 166 | trait Graph<N, E> {
[INFO] [stdout]     |       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Drop` is never used
[INFO] [stdout]   --> src/more_utility_traits.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | trait Drop {
[INFO] [stdout]    |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Clone` is never used
[INFO] [stdout]   --> src/more_utility_traits.rs:34:7
[INFO] [stdout]    |
[INFO] [stdout] 34 | trait Clone: Sized {
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Potato` is never constructed
[INFO] [stdout]    --> src/traits.rs:184:8
[INFO] [stdout]     |
[INFO] [stdout] 184 | struct Potato(Vec<i32>);
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Summary` is never used
[INFO] [stdout]    --> src/traits.rs:531:7
[INFO] [stdout]     |
[INFO] [stdout] 531 | trait Summary {
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Summary2` is never used
[INFO] [stdout]    --> src/traits.rs:622:7
[INFO] [stdout]     |
[INFO] [stdout] 622 | trait Summary2 {
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a1`
[INFO] [stdout]    --> src/traits.rs:258:9
[INFO] [stdout]     |
[INFO] [stdout] 258 |     let a1: AddressBook = Default::default();
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a2`
[INFO] [stdout]    --> src/traits.rs:260:9
[INFO] [stdout]     |
[INFO] [stdout] 260 |     let a2 = AddressBook::default();
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Graph` is never used
[INFO] [stdout]    --> src/generics.rs:166:7
[INFO] [stdout]     |
[INFO] [stdout] 166 | trait Graph<N, E> {
[INFO] [stdout]     |       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Drop` is never used
[INFO] [stdout]   --> src/more_utility_traits.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | trait Drop {
[INFO] [stdout]    |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Clone` is never used
[INFO] [stdout]   --> src/more_utility_traits.rs:34:7
[INFO] [stdout]    |
[INFO] [stdout] 34 | trait Clone: Sized {
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Potato` is never constructed
[INFO] [stdout]    --> src/traits.rs:184:8
[INFO] [stdout]     |
[INFO] [stdout] 184 | struct Potato(Vec<i32>);
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Summary` is never used
[INFO] [stdout]    --> src/traits.rs:531:7
[INFO] [stdout]     |
[INFO] [stdout] 531 | trait Summary {
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Summary2` is never used
[INFO] [stdout]    --> src/traits.rs:622:7
[INFO] [stdout]     |
[INFO] [stdout] 622 | trait Summary2 {
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "c65af66593345bce58e1cbf1ef8d9ad0e6d0904e51c36aac2d17aea809d77d43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c65af66593345bce58e1cbf1ef8d9ad0e6d0904e51c36aac2d17aea809d77d43", kill_on_drop: false }`
[INFO] [stdout] c65af66593345bce58e1cbf1ef8d9ad0e6d0904e51c36aac2d17aea809d77d43
