[INFO] fetching crate iterator-cache 0.1.0... [INFO] testing iterator-cache-0.1.0 against beta-2025-09-21 for beta-1.91-3 [INFO] extracting crate iterator-cache 0.1.0 into /workspace/builds/worker-1-tc2/source [INFO] started tweaking crates.io crate iterator-cache 0.1.0 [INFO] finished tweaking crates.io crate iterator-cache 0.1.0 [INFO] tweaked toml for crates.io crate iterator-cache 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate iterator-cache 0.1.0 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] [stderr] Updating crates.io index [INFO] [stderr] Locking 1 package to latest compatible version [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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 465c844b2902b5c54caac6ed1d1f54e22e413fe95818f95bc98524c840b2ff2c [INFO] running `Command { std: "docker" "start" "-a" "465c844b2902b5c54caac6ed1d1f54e22e413fe95818f95bc98524c840b2ff2c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "465c844b2902b5c54caac6ed1d1f54e22e413fe95818f95bc98524c840b2ff2c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "465c844b2902b5c54caac6ed1d1f54e22e413fe95818f95bc98524c840b2ff2c", kill_on_drop: false }` [INFO] [stdout] 465c844b2902b5c54caac6ed1d1f54e22e413fe95818f95bc98524c840b2ff2c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] c06aa1284800ba96972c3c20e9464553cb5d99fce2b02f8b77a19ed49eb36686 [INFO] running `Command { std: "docker" "start" "-a" "c06aa1284800ba96972c3c20e9464553cb5d99fce2b02f8b77a19ed49eb36686", kill_on_drop: false }` [INFO] [stderr] Compiling queues v1.1.0 [INFO] [stderr] Compiling iterator-cache v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.43s [INFO] running `Command { std: "docker" "inspect" "c06aa1284800ba96972c3c20e9464553cb5d99fce2b02f8b77a19ed49eb36686", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c06aa1284800ba96972c3c20e9464553cb5d99fce2b02f8b77a19ed49eb36686", kill_on_drop: false }` [INFO] [stdout] c06aa1284800ba96972c3c20e9464553cb5d99fce2b02f8b77a19ed49eb36686 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 6dd2183b991a4d1e1e96e8061823ff25be836c625422b855217baad82596593a [INFO] running `Command { std: "docker" "start" "-a" "6dd2183b991a4d1e1e96e8061823ff25be836c625422b855217baad82596593a", kill_on_drop: false }` [INFO] [stderr] Compiling iterator-cache v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `iter` [INFO] [stdout] --> src/tests.rs:18:11 [INFO] [stdout] | [INFO] [stdout] 18 | let mut iter = vec![1,2,3,4,5].into_iter().cache(6).unwrap(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_iter` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/tests.rs:18:7 [INFO] [stdout] | [INFO] [stdout] 18 | let mut iter = vec![1,2,3,4,5].into_iter().cache(6).unwrap(); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `iter` [INFO] [stdout] --> src/tests.rs:74:11 [INFO] [stdout] | [INFO] [stdout] 74 | let mut iter = vec![1,2,3,4,5].into_iter() [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_iter` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/tests.rs:55:7 [INFO] [stdout] | [INFO] [stdout] 55 | let mut iter = vec![1,2,3,4,5].into_iter() [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/tests.rs:74:7 [INFO] [stdout] | [INFO] [stdout] 74 | let mut iter = vec![1,2,3,4,5].into_iter() [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static [INFO] [stdout] --> src/tests.rs:63:15 [INFO] [stdout] | [INFO] [stdout] 63 | assert_eq!(COUNTER,0); [INFO] [stdout] | ^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static [INFO] [stdout] --> src/tests.rs:67:15 [INFO] [stdout] | [INFO] [stdout] 67 | assert_eq!(COUNTER,2); [INFO] [stdout] | ^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tests.rs:69:3 [INFO] [stdout] | [INFO] [stdout] 69 | iter.cache_more(2); [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)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 69 | let _ = iter.cache_more(2); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static [INFO] [stdout] --> src/tests.rs:71:15 [INFO] [stdout] | [INFO] [stdout] 71 | assert_eq!(COUNTER,4); [INFO] [stdout] | ^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static [INFO] [stdout] --> src/tests.rs:83:15 [INFO] [stdout] | [INFO] [stdout] 83 | assert_eq!(COUNTER,5); [INFO] [stdout] | ^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.47s [INFO] running `Command { std: "docker" "inspect" "6dd2183b991a4d1e1e96e8061823ff25be836c625422b855217baad82596593a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6dd2183b991a4d1e1e96e8061823ff25be836c625422b855217baad82596593a", kill_on_drop: false }` [INFO] [stdout] 6dd2183b991a4d1e1e96e8061823ff25be836c625422b855217baad82596593a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 1025379fea69896a9048a8d105fa724c0642b69b64b3bfd161bd2f98389ad44c [INFO] running `Command { std: "docker" "start" "-a" "1025379fea69896a9048a8d105fa724c0642b69b64b3bfd161bd2f98389ad44c", kill_on_drop: false }` [INFO] [stderr] warning: unused variable: `iter` [INFO] [stderr] --> src/tests.rs:18:11 [INFO] [stderr] | [INFO] [stderr] 18 | let mut iter = vec![1,2,3,4,5].into_iter().cache(6).unwrap(); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_iter` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/tests.rs:18:7 [INFO] [stderr] | [INFO] [stderr] 18 | let mut iter = vec![1,2,3,4,5].into_iter().cache(6).unwrap(); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `iter` [INFO] [stderr] --> src/tests.rs:74:11 [INFO] [stderr] | [INFO] [stderr] 74 | let mut iter = vec![1,2,3,4,5].into_iter() [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_iter` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/tests.rs:55:7 [INFO] [stderr] | [INFO] [stderr] 55 | let mut iter = vec![1,2,3,4,5].into_iter() [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/tests.rs:74:7 [INFO] [stderr] | [INFO] [stderr] 74 | let mut iter = vec![1,2,3,4,5].into_iter() [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: creating a shared reference to mutable static [INFO] [stderr] --> src/tests.rs:63:15 [INFO] [stderr] | [INFO] [stderr] 63 | assert_eq!(COUNTER,0); [INFO] [stderr] | ^^^^^^^ shared reference to mutable static [INFO] [stderr] | [INFO] [stderr] = note: for more information, see [INFO] [stderr] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stderr] = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: creating a shared reference to mutable static [INFO] [stderr] --> src/tests.rs:67:15 [INFO] [stderr] | [INFO] [stderr] 67 | assert_eq!(COUNTER,2); [INFO] [stderr] | ^^^^^^^ shared reference to mutable static [INFO] [stderr] | [INFO] [stderr] = note: for more information, see [INFO] [stderr] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/tests.rs:69:3 [INFO] [stderr] | [INFO] [stderr] 69 | iter.cache_more(2); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [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] 69 | let _ = iter.cache_more(2); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: creating a shared reference to mutable static [INFO] [stderr] --> src/tests.rs:71:15 [INFO] [stderr] | [INFO] [stderr] 71 | assert_eq!(COUNTER,4); [INFO] [stderr] | ^^^^^^^ shared reference to mutable static [INFO] [stderr] | [INFO] [stderr] = note: for more information, see [INFO] [stderr] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stderr] [INFO] [stderr] warning: creating a shared reference to mutable static [INFO] [stderr] --> src/tests.rs:83:15 [INFO] [stderr] | [INFO] [stderr] 83 | assert_eq!(COUNTER,5); [INFO] [stderr] | ^^^^^^^ shared reference to mutable static [INFO] [stderr] | [INFO] [stderr] = note: for more information, see [INFO] [stderr] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stderr] [INFO] [stderr] warning: `iterator-cache` (lib test) generated 10 warnings (run `cargo fix --lib -p iterator-cache --tests` to apply 3 suggestions) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/iterator_cache-074606a2ea8ec1ca) [INFO] [stdout] [INFO] [stdout] running 8 tests [INFO] [stdout] test tests::tests::from_doc_test ... ok [INFO] [stdout] test tests::tests::iterator_methods ... ok [INFO] [stdout] test tests::tests::lasy_eval ... ok [INFO] [stdout] test tests::tests::queue_all ... ok [INFO] [stdout] test tests::tests::queue_overshoot_ok ... ok [INFO] [stdout] test tests::tests::queue_some ... ok [INFO] [stdout] test tests::tests::return_errors ... ok [INFO] [stdout] test tests::tests::queue_too_many - should panic ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s [INFO] [stdout] [INFO] [stderr] Doc-tests iterator_cache [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test src/lib.rs - IteratorCache::cache_more (line 47) ... ignored [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "1025379fea69896a9048a8d105fa724c0642b69b64b3bfd161bd2f98389ad44c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1025379fea69896a9048a8d105fa724c0642b69b64b3bfd161bd2f98389ad44c", kill_on_drop: false }` [INFO] [stdout] 1025379fea69896a9048a8d105fa724c0642b69b64b3bfd161bd2f98389ad44c