[INFO] fetching crate shared-buffer-rs 0.3.2... [INFO] testing shared-buffer-rs-0.3.2 against beta-2026-04-21 for beta-1.96-3 [INFO] extracting crate shared-buffer-rs 0.3.2 into /workspace/builds/worker-6-tc2/source [INFO] started tweaking crates.io crate shared-buffer-rs 0.3.2 [INFO] removed 0 missing examples [INFO] finished tweaking crates.io crate shared-buffer-rs 0.3.2 [INFO] tweaked toml for crates.io crate shared-buffer-rs 0.3.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate shared-buffer-rs 0.3.2 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 crates.io crate shared-buffer-rs 0.3.2 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] 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] 0414e85db4932a31e08d6a056f555839c2aef03d2ddc04cd7eafe5cda3b47431 [INFO] running `Command { std: "docker" "start" "-a" "0414e85db4932a31e08d6a056f555839c2aef03d2ddc04cd7eafe5cda3b47431", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0414e85db4932a31e08d6a056f555839c2aef03d2ddc04cd7eafe5cda3b47431", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0414e85db4932a31e08d6a056f555839c2aef03d2ddc04cd7eafe5cda3b47431", kill_on_drop: false }` [INFO] [stdout] 0414e85db4932a31e08d6a056f555839c2aef03d2ddc04cd7eafe5cda3b47431 [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] 7375edbc8b4e4ce903807a017813101bfedb1dd7614e75df21a85165c87da10b [INFO] running `Command { std: "docker" "start" "-a" "7375edbc8b4e4ce903807a017813101bfedb1dd7614e75df21a85165c87da10b", kill_on_drop: false }` [INFO] [stderr] Compiling crossbeam-utils v0.8.21 [INFO] [stderr] Compiling shared-buffer-rs v0.3.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `cx` [INFO] [stdout] --> src/lib.rs:288:18 [INFO] [stdout] | [INFO] [stdout] 288 | |cx| [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_cx` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `item` [INFO] [stdout] --> src/lib.rs:1654:17 [INFO] [stdout] | [INFO] [stdout] 1654 | for (i, item) in self.buffs.iter().enumerate() [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_item` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.45s [INFO] running `Command { std: "docker" "inspect" "7375edbc8b4e4ce903807a017813101bfedb1dd7614e75df21a85165c87da10b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7375edbc8b4e4ce903807a017813101bfedb1dd7614e75df21a85165c87da10b", kill_on_drop: false }` [INFO] [stdout] 7375edbc8b4e4ce903807a017813101bfedb1dd7614e75df21a85165c87da10b [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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 82d0241f4e668c0041c4125863ae958210d5f08d02d7e4c41cda20a47786d59e [INFO] running `Command { std: "docker" "start" "-a" "82d0241f4e668c0041c4125863ae958210d5f08d02d7e4c41cda20a47786d59e", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.95 [INFO] [stderr] Compiling unicode-ident v1.0.18 [INFO] [stdout] warning: unused variable: `cx` [INFO] [stdout] --> src/lib.rs:288:18 [INFO] [stdout] | [INFO] [stdout] 288 | |cx| [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_cx` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `item` [INFO] [stdout] --> src/lib.rs:1654:17 [INFO] [stdout] | [INFO] [stdout] 1654 | for (i, item) in self.buffs.iter().enumerate() [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_item` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling quote v1.0.40 [INFO] [stderr] Compiling syn v2.0.104 [INFO] [stderr] Compiling tokio-macros v2.5.0 [INFO] [stderr] Compiling tokio v1.47.0 [INFO] [stderr] Compiling shared-buffer-rs v0.3.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `cx` [INFO] [stdout] --> src/lib.rs:288:18 [INFO] [stdout] | [INFO] [stdout] 288 | |cx| [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_cx` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `item` [INFO] [stdout] --> src/lib.rs:1654:17 [INFO] [stdout] | [INFO] [stdout] 1654 | for (i, item) in self.buffs.iter().enumerate() [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_item` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 10.95s [INFO] running `Command { std: "docker" "inspect" "82d0241f4e668c0041c4125863ae958210d5f08d02d7e4c41cda20a47786d59e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "82d0241f4e668c0041c4125863ae958210d5f08d02d7e4c41cda20a47786d59e", kill_on_drop: false }` [INFO] [stdout] 82d0241f4e668c0041c4125863ae958210d5f08d02d7e4c41cda20a47786d59e [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" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 68f55d2e79aee3bb6bc129205f32c9bbe8eac3349af2730dbdb53427aa962fef [INFO] running `Command { std: "docker" "start" "-a" "68f55d2e79aee3bb6bc129205f32c9bbe8eac3349af2730dbdb53427aa962fef", kill_on_drop: false }` [INFO] [stderr] warning: unused variable: `cx` [INFO] [stderr] --> src/lib.rs:288:18 [INFO] [stderr] | [INFO] [stderr] 288 | |cx| [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_cx` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `item` [INFO] [stderr] --> src/lib.rs:1654:17 [INFO] [stderr] | [INFO] [stderr] 1654 | for (i, item) in self.buffs.iter().enumerate() [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_item` [INFO] [stderr] [INFO] [stderr] warning: `shared-buffer-rs` (lib) generated 2 warnings (run `cargo fix --lib -p shared-buffer-rs` to apply 2 suggestions) [INFO] [stderr] warning: `shared-buffer-rs` (lib test) generated 2 warnings (2 duplicates) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/shared_buffer_rs-12cdb589217789ec) [INFO] [stdout] [INFO] [stdout] running 11 tests [INFO] [stdout] test tests::simple_test ... ok [INFO] [stdout] test tests::simple_test_dopped_in_place ... ok [INFO] [stdout] test tests::simple_test_dropped_in_place_downgrade ... ok [INFO] [stdout] test tests::simple_test_drop_in_place_downgrade ... ok [INFO] [stdout] test tests::test_async_clone ... ok [INFO] [stdout] test tests::test_try_into_read ... ok [INFO] [stdout] test tests::timing_test ... ok [INFO] [stdout] test tests::test_multithreading ... ok [INFO] [stdout] test tests::simple_test_mth ... ok [INFO] [stdout] test tests::simple_test_concurent ... ok [INFO] [stdout] test tests::test_multithreading_async ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.02s [INFO] [stdout] [INFO] [stderr] Doc-tests shared_buffer_rs [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "68f55d2e79aee3bb6bc129205f32c9bbe8eac3349af2730dbdb53427aa962fef", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "68f55d2e79aee3bb6bc129205f32c9bbe8eac3349af2730dbdb53427aa962fef", kill_on_drop: false }` [INFO] [stdout] 68f55d2e79aee3bb6bc129205f32c9bbe8eac3349af2730dbdb53427aa962fef