[INFO] fetching crate generations 2.0.0...
[INFO] testing generations-2.0.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate generations 2.0.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate generations 2.0.0
[INFO] finished tweaking crates.io crate generations 2.0.0
[INFO] tweaked toml for crates.io crate generations 2.0.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate generations 2.0.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c2436e84725a9d5c7a3b2c91a5103f8b11ee2bf7f1d61e5e7df12e1f94cfee8
[INFO] running `Command { std: "docker" "start" "-a" "1c2436e84725a9d5c7a3b2c91a5103f8b11ee2bf7f1d61e5e7df12e1f94cfee8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c2436e84725a9d5c7a3b2c91a5103f8b11ee2bf7f1d61e5e7df12e1f94cfee8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c2436e84725a9d5c7a3b2c91a5103f8b11ee2bf7f1d61e5e7df12e1f94cfee8", kill_on_drop: false }`
[INFO] [stdout] 1c2436e84725a9d5c7a3b2c91a5103f8b11ee2bf7f1d61e5e7df12e1f94cfee8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f79dd082351dcf5d2be6f9d3e95842504530244e35448574c3b309c903b02d64
[INFO] running `Command { std: "docker" "start" "-a" "f79dd082351dcf5d2be6f9d3e95842504530244e35448574c3b309c903b02d64", kill_on_drop: false }`
[INFO] [stderr]    Compiling generations v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "f79dd082351dcf5d2be6f9d3e95842504530244e35448574c3b309c903b02d64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f79dd082351dcf5d2be6f9d3e95842504530244e35448574c3b309c903b02d64", kill_on_drop: false }`
[INFO] [stdout] f79dd082351dcf5d2be6f9d3e95842504530244e35448574c3b309c903b02d64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 656132a830adcf64a4258642c5b5c61a20ca88ad8afb3c8d5cdc5f75c50776b3
[INFO] running `Command { std: "docker" "start" "-a" "656132a830adcf64a4258642c5b5c61a20ca88ad8afb3c8d5cdc5f75c50776b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling generations v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]    --> src/lib.rs:391:9
[INFO] [stdout]     |
[INFO] [stdout] 391 |         format!("{:?}", &thing);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 391 |         let _ = format!("{:?}", &thing);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "656132a830adcf64a4258642c5b5c61a20ca88ad8afb3c8d5cdc5f75c50776b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "656132a830adcf64a4258642c5b5c61a20ca88ad8afb3c8d5cdc5f75c50776b3", kill_on_drop: false }`
[INFO] [stdout] 656132a830adcf64a4258642c5b5c61a20ca88ad8afb3c8d5cdc5f75c50776b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cd6239488a8c9072fc706a790ad081b53e454b3fde5b257c28fd27a98aa6f5b5
[INFO] running `Command { std: "docker" "start" "-a" "cd6239488a8c9072fc706a790ad081b53e454b3fde5b257c28fd27a98aa6f5b5", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `must_use` that must be used
[INFO] [stderr]    --> src/lib.rs:391:9
[INFO] [stderr]     |
[INFO] [stderr] 391 |         format!("{:?}", &thing);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 391 |         let _ = format!("{:?}", &thing);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `generations` (lib test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/generations-b485a94e78cc4982)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::basic_test ... ok
[INFO] [stdout] test tests::debug_print_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests generations
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - (line 35) ... ok
[INFO] [stdout] test src/lib.rs - Generations<Model>::current (line 131) ... ok
[INFO] [stdout] test src/lib.rs - Generations<Model>::new (line 102) ... ok
[INFO] [stdout] test src/lib.rs - Generations<Model>::reset (line 202) ... ok
[INFO] [stdout] test src/lib.rs - Generations<Model>::step (line 156) ... ok
[INFO] [stdout] test src/lib.rs - Generations<Model>::reset_with (line 181) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.51s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "cd6239488a8c9072fc706a790ad081b53e454b3fde5b257c28fd27a98aa6f5b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd6239488a8c9072fc706a790ad081b53e454b3fde5b257c28fd27a98aa6f5b5", kill_on_drop: false }`
[INFO] [stdout] cd6239488a8c9072fc706a790ad081b53e454b3fde5b257c28fd27a98aa6f5b5