[INFO] cloning repository https://github.com/lordofjunk/mtg-meta-analysis-source
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lordofjunk/mtg-meta-analysis-source" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flordofjunk%2Fmtg-meta-analysis-source", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flordofjunk%2Fmtg-meta-analysis-source'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7a5d0db6a2511abcd2431fd83e2a95d538ea9fe5
[INFO] testing lordofjunk/mtg-meta-analysis-source against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flordofjunk%2Fmtg-meta-analysis-source" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/lordofjunk/mtg-meta-analysis-source
[INFO] finished tweaking git repo https://github.com/lordofjunk/mtg-meta-analysis-source
[INFO] tweaked toml for git repo https://github.com/lordofjunk/mtg-meta-analysis-source written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/lordofjunk/mtg-meta-analysis-source on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/lordofjunk/mtg-meta-analysis-source 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 90cbd59835fe9f69364e62d279a1bb78daf2595f8d1943d3807f79945e7918e2
[INFO] running `Command { std: "docker" "start" "-a" "90cbd59835fe9f69364e62d279a1bb78daf2595f8d1943d3807f79945e7918e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90cbd59835fe9f69364e62d279a1bb78daf2595f8d1943d3807f79945e7918e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90cbd59835fe9f69364e62d279a1bb78daf2595f8d1943d3807f79945e7918e2", kill_on_drop: false }`
[INFO] [stdout] 90cbd59835fe9f69364e62d279a1bb78daf2595f8d1943d3807f79945e7918e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 431a3436e078c22b0052cefa96dda62c84818e83f5efd93d44dede20b6303392
[INFO] running `Command { std: "docker" "start" "-a" "431a3436e078c22b0052cefa96dda62c84818e83f5efd93d44dede20b6303392", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]    Compiling final-project v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected `;`, found `std`
[INFO] [stdout]   --> src/main.rs:16:115
[INFO] [stdout]    |
[INFO] [stdout] 16 |         eprintln!("Correct arguments: [desired interval half-width] [Seed to be used in random number generator]")
[INFO] [stdout]    |                                                                                                                   ^ help: add `;` here
[INFO] [stdout] 17 |         std::process::exit(1);
[INFO] [stdout]    |         --- unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/game.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 |     provider: &'a mut Provider<f64>,
[INFO] [stdout]   |                       ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 5 |     provider: &'a mut dyn Provider<f64>,
[INFO] [stdout]   |                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/game.rs:13:41
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(provider_borrow: &'a mut Provider<f64>, p1_magnitude: usize, p2_magnitude: usize) -> Game<'a> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(provider_borrow: &'a mut dyn Provider<f64>, p1_magnitude: usize, p2_magnitude: usize) -> Game<'a> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interval.rs:21:67
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn generate_interval(p1: usize, p2: usize, w: f64, prov: &mut Provider<f64>) -> f64 {
[INFO] [stdout]    |                                                                   ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn generate_interval(p1: usize, p2: usize, w: f64, prov: &mut dyn Provider<f64>) -> f64 {
[INFO] [stdout]    |                                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/player.rs:38:36
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn draw(&mut self, p: &mut Provider<f64>) -> Option<bool> {
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn draw(&mut self, p: &mut dyn Provider<f64>) -> Option<bool> {
[INFO] [stdout]    |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/player.rs:57:59
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn turn(&mut self, opponent: &mut Player, p: &mut Provider<f64>) -> Option<bool> {
[INFO] [stdout]    |                                                           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn turn(&mut self, opponent: &mut Player, p: &mut dyn Provider<f64>) -> Option<bool> {
[INFO] [stdout]    |                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this method takes 1 argument but 2 arguments were supplied
[INFO] [stdout]   --> src/main.rs:20:37
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let w:  f64   = args[1].parse().expect("Unable to process desired half-width, w: likely not a valid number: {}", args[1]);
[INFO] [stdout]    |                                     ^^^^^^                                                                           ------- unexpected argument #2 of type `String`
[INFO] [stdout]    |
[INFO] [stdout] note: method defined here
[INFO] [stdout]   --> /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/result.rs:1179:11
[INFO] [stdout] help: remove the extra argument
[INFO] [stdout]    |
[INFO] [stdout] 20 -     let w:  f64   = args[1].parse().expect("Unable to process desired half-width, w: likely not a valid number: {}", args[1]);
[INFO] [stdout] 20 +     let w:  f64   = args[1].parse().expect("Unable to process desired half-width, w: likely not a valid number: {}");
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this method takes 1 argument but 2 arguments were supplied
[INFO] [stdout]   --> src/main.rs:21:37
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let seed: i64 = args[2].parse().expect("Unable to process seed: likely not a valid number: {}", args[2]);
[INFO] [stdout]    |                                     ^^^^^^                                                          ------- unexpected argument #2 of type `String`
[INFO] [stdout]    |
[INFO] [stdout] note: method defined here
[INFO] [stdout]   --> /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/result.rs:1179:11
[INFO] [stdout] help: remove the extra argument
[INFO] [stdout]    |
[INFO] [stdout] 21 -     let seed: i64 = args[2].parse().expect("Unable to process seed: likely not a valid number: {}", args[2]);
[INFO] [stdout] 21 +     let seed: i64 = args[2].parse().expect("Unable to process seed: likely not a valid number: {}");
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `final-project` (bin "final-project") due to 3 previous errors; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "431a3436e078c22b0052cefa96dda62c84818e83f5efd93d44dede20b6303392", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "431a3436e078c22b0052cefa96dda62c84818e83f5efd93d44dede20b6303392", kill_on_drop: false }`
[INFO] [stdout] 431a3436e078c22b0052cefa96dda62c84818e83f5efd93d44dede20b6303392
