[INFO] cloning repository https://github.com/frostie614/cards
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/frostie614/cards" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrostie614%2Fcards", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrostie614%2Fcards'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6c0f920240c260881a84e2cbb2b22baeae50cebc
[INFO] building frostie614/cards against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrostie614%2Fcards" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/frostie614/cards on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/frostie614/cards
[INFO] finished tweaking git repo https://github.com/frostie614/cards
[INFO] tweaked toml for git repo https://github.com/frostie614/cards written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/frostie614/cards 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded winapi v0.3.3
[INFO] [stderr]   Downloaded winapi-x86_64-pc-windows-gnu v0.3.2
[INFO] [stderr]   Downloaded winapi-i686-pc-windows-gnu v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c8e02fa048a7bc0c01cc4ee8b535a3051b2eee153920d3c3b8221c1f5d0654e
[INFO] running `Command { std: "docker" "start" "-a" "2c8e02fa048a7bc0c01cc4ee8b535a3051b2eee153920d3c3b8221c1f5d0654e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c8e02fa048a7bc0c01cc4ee8b535a3051b2eee153920d3c3b8221c1f5d0654e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c8e02fa048a7bc0c01cc4ee8b535a3051b2eee153920d3c3b8221c1f5d0654e", kill_on_drop: false }`
[INFO] [stdout] 2c8e02fa048a7bc0c01cc4ee8b535a3051b2eee153920d3c3b8221c1f5d0654e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8bb8f6960b43287733fa97eac0271a2b5f0f9e450c269f1163d0f8b72d210786
[INFO] running `Command { std: "docker" "start" "-a" "8bb8f6960b43287733fa97eac0271a2b5f0f9e450c269f1163d0f8b72d210786", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling libc v0.2.36
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling cards v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Card` is never constructed
[INFO] [stdout]   --> src/main.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Card{
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/main.rs:1:9
[INFO] [stdout]    |
[INFO] [stdout] 1  | #![warn(dead_code)]
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Deck` is never constructed
[INFO] [stdout]   --> src/main.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct Deck(Vec<Card>);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Suit` is never used
[INFO] [stdout]   --> src/main.rs:24:6
[INFO] [stdout]    |
[INFO] [stdout] 24 | enum Suit {Hearts, Diamonds, Spades, Clubs}
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Pip` is never used
[INFO] [stdout]   --> src/main.rs:27:6
[INFO] [stdout]    |
[INFO] [stdout] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `deal`, and `shuffle` are never used
[INFO] [stdout]   --> src/main.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl Deck {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 46 |
[INFO] [stdout] 47 |     fn new()-> Deck{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     fn deal(&mut self) -> Option<Card>{
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     fn shuffle(&mut self){
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `value` are never used
[INFO] [stdout]   --> src/main.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 66 | impl Card{
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 67 |
[INFO] [stdout] 68 |     fn new(suit:Suit, pip:Pip) -> Card{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |     fn value(&self) -> u8 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |             writeln!(f, "{}", card);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.41s
[INFO] running `Command { std: "docker" "inspect" "8bb8f6960b43287733fa97eac0271a2b5f0f9e450c269f1163d0f8b72d210786", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bb8f6960b43287733fa97eac0271a2b5f0f9e450c269f1163d0f8b72d210786", kill_on_drop: false }`
[INFO] [stdout] 8bb8f6960b43287733fa97eac0271a2b5f0f9e450c269f1163d0f8b72d210786
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e67125d309988dbedf4b20ba9c9a14aabfd2a744dc43b9a7276345b9828b266
[INFO] running `Command { std: "docker" "start" "-a" "7e67125d309988dbedf4b20ba9c9a14aabfd2a744dc43b9a7276345b9828b266", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling cards v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Card` is never constructed
[INFO] [stdout]   --> src/main.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Card{
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/main.rs:1:9
[INFO] [stdout]    |
[INFO] [stdout] 1  | #![warn(dead_code)]
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Deck` is never constructed
[INFO] [stdout]   --> src/main.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct Deck(Vec<Card>);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Suit` is never used
[INFO] [stdout]   --> src/main.rs:24:6
[INFO] [stdout]    |
[INFO] [stdout] 24 | enum Suit {Hearts, Diamonds, Spades, Clubs}
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Pip` is never used
[INFO] [stdout]   --> src/main.rs:27:6
[INFO] [stdout]    |
[INFO] [stdout] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `deal`, and `shuffle` are never used
[INFO] [stdout]   --> src/main.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl Deck {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 46 |
[INFO] [stdout] 47 |     fn new()-> Deck{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     fn deal(&mut self) -> Option<Card>{
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     fn shuffle(&mut self){
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `value` are never used
[INFO] [stdout]   --> src/main.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 66 | impl Card{
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 67 |
[INFO] [stdout] 68 |     fn new(suit:Suit, pip:Pip) -> Card{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |     fn value(&self) -> u8 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |             writeln!(f, "{}", card);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "7e67125d309988dbedf4b20ba9c9a14aabfd2a744dc43b9a7276345b9828b266", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e67125d309988dbedf4b20ba9c9a14aabfd2a744dc43b9a7276345b9828b266", kill_on_drop: false }`
[INFO] [stdout] 7e67125d309988dbedf4b20ba9c9a14aabfd2a744dc43b9a7276345b9828b266