[INFO] cloning repository https://github.com/Noah2610/rust-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Noah2610/rust-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNoah2610%2Frust-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNoah2610%2Frust-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a98916f1c149fa8a42de220b7b7427b2550da1c2
[INFO] checking Noah2610/rust-playground against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNoah2610%2Frust-playground" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Noah2610/rust-playground on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Noah2610/rust-playground
[INFO] finished tweaking git repo https://github.com/Noah2610/rust-playground
[INFO] tweaked toml for git repo https://github.com/Noah2610/rust-playground written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Noah2610/rust-playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3d12a50b8ec5a3e3b5a36c65c7af245aed31f7d6e39d147477325b07096583ad
[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" "3d12a50b8ec5a3e3b5a36c65c7af245aed31f7d6e39d147477325b07096583ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d12a50b8ec5a3e3b5a36c65c7af245aed31f7d6e39d147477325b07096583ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d12a50b8ec5a3e3b5a36c65c7af245aed31f7d6e39d147477325b07096583ad", kill_on_drop: false }`
[INFO] [stdout] 3d12a50b8ec5a3e3b5a36c65c7af245aed31f7d6e39d147477325b07096583ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 07c0bcdefebb53c7cdef6a9327817ba406e7cb2c9567dbc7d9419a2b02feb6fd
[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" "07c0bcdefebb53c7cdef6a9327817ba406e7cb2c9567dbc7d9419a2b02feb6fd", kill_on_drop: false }`
[INFO] [stderr]     Checking andrew-tut v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/food/mod.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |  /         match self.color {
[INFO] [stdout] 45 |  |             //! The `format!()` [macro] lets us create a `String` with a pattern,
[INFO] [stdout]    |  |_____________^
[INFO] [stdout] 46 | ||             //! equal to how the `println!()` macro does it.
[INFO] [stdout] 47 | ||             //! [macro]: https://doc.rust-lang.org/book/ch19-06-macros.html
[INFO] [stdout]    | ||___________________________________________________________________________^
[INFO] [stdout] 48 |  |             Some(color) => format!("This apple is {:?}", color),
[INFO] [stdout] 49 |  |             None        => String::from("This apple has no color :("),
[INFO] [stdout] 50 |  |         }
[INFO] [stdout]    |  |_________- rustdoc does not generate documentation for expressions
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Green`
[INFO] [stdout]  --> src/food/color.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Green,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Blue`
[INFO] [stdout]  --> src/food/color.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Blue,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/food/mod.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |  /         match self.color {
[INFO] [stdout] 45 |  |             //! The `format!()` [macro] lets us create a `String` with a pattern,
[INFO] [stdout]    |  |_____________^
[INFO] [stdout] 46 | ||             //! equal to how the `println!()` macro does it.
[INFO] [stdout] 47 | ||             //! [macro]: https://doc.rust-lang.org/book/ch19-06-macros.html
[INFO] [stdout]    | ||___________________________________________________________________________^
[INFO] [stdout] 48 |  |             Some(color) => format!("This apple is {:?}", color),
[INFO] [stdout] 49 |  |             None        => String::from("This apple has no color :("),
[INFO] [stdout] 50 |  |         }
[INFO] [stdout]    |  |_________- rustdoc does not generate documentation for expressions
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Green`
[INFO] [stdout]  --> src/food/color.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Green,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Blue`
[INFO] [stdout]  --> src/food/color.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Blue,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "07c0bcdefebb53c7cdef6a9327817ba406e7cb2c9567dbc7d9419a2b02feb6fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07c0bcdefebb53c7cdef6a9327817ba406e7cb2c9567dbc7d9419a2b02feb6fd", kill_on_drop: false }`
[INFO] [stdout] 07c0bcdefebb53c7cdef6a9327817ba406e7cb2c9567dbc7d9419a2b02feb6fd