[INFO] fetching crate sharded_ringbuf 0.5.1...
[INFO] testing sharded_ringbuf-0.5.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate sharded_ringbuf 0.5.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate sharded_ringbuf 0.5.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate sharded_ringbuf 0.5.1
[INFO] tweaked toml for crates.io crate sharded_ringbuf 0.5.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sharded_ringbuf 0.5.1 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 sharded_ringbuf 0.5.1 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] 34024d6b2336fe1046363b21636bbaac44d08a41c69c8d44233627095691e258
[INFO] running `Command { std: "docker" "start" "-a" "34024d6b2336fe1046363b21636bbaac44d08a41c69c8d44233627095691e258", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34024d6b2336fe1046363b21636bbaac44d08a41c69c8d44233627095691e258", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34024d6b2336fe1046363b21636bbaac44d08a41c69c8d44233627095691e258", kill_on_drop: false }`
[INFO] [stdout] 34024d6b2336fe1046363b21636bbaac44d08a41c69c8d44233627095691e258
[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] 0eef777644f1aa70a75661bbd3fbb3357afb424b839a315580a0649e586181d9
[INFO] running `Command { std: "docker" "start" "-a" "0eef777644f1aa70a75661bbd3fbb3357afb424b839a315580a0649e586181d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling tokio v1.45.1
[INFO] [stderr]    Compiling sharded_ringbuf v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.38s
[INFO] running `Command { std: "docker" "inspect" "0eef777644f1aa70a75661bbd3fbb3357afb424b839a315580a0649e586181d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eef777644f1aa70a75661bbd3fbb3357afb424b839a315580a0649e586181d9", kill_on_drop: false }`
[INFO] [stdout] 0eef777644f1aa70a75661bbd3fbb3357afb424b839a315580a0649e586181d9
[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] 2a21066a48602a67d7c0f8aa4ed8086d5e5f7fd140eb983090555fb45f949cb0
[INFO] running `Command { std: "docker" "start" "-a" "2a21066a48602a67d7c0f8aa4ed8086d5e5f7fd140eb983090555fb45f949cb0", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v1.0.8
[INFO] [stderr]    Compiling linux-raw-sys v0.9.4
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling event-listener v5.4.0
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling signal-hook-registry v1.4.6
[INFO] [stderr]    Compiling half v2.6.0
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling clap_builder v4.5.40
[INFO] [stderr]    Compiling async-lock v3.4.1
[INFO] [stderr]    Compiling async-channel v2.5.0
[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling blocking v1.6.2
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling nanorand v0.7.0
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling async-fs v2.1.3
[INFO] [stderr]    Compiling async-executor v1.13.3
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling flume v0.11.1
[INFO] [stderr]    Compiling crossbeam v0.8.4
[INFO] [stderr]    Compiling kanal v0.1.1
[INFO] [stderr]    Compiling clap v4.5.40
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling tokio v1.45.1
[INFO] [stderr]    Compiling polling v3.10.0
[INFO] [stderr]    Compiling sharded_ringbuf v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling async-io v2.5.0
[INFO] [stderr]    Compiling async-signal v0.2.12
[INFO] [stderr]    Compiling async-net v2.0.0
[INFO] [stderr]    Compiling async-process v2.4.0
[INFO] [stderr]    Compiling smol v2.0.2
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion v0.6.0
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 55.20s
[INFO] running `Command { std: "docker" "inspect" "2a21066a48602a67d7c0f8aa4ed8086d5e5f7fd140eb983090555fb45f949cb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a21066a48602a67d7c0f8aa4ed8086d5e5f7fd140eb983090555fb45f949cb0", kill_on_drop: false }`
[INFO] [stdout] 2a21066a48602a67d7c0f8aa4ed8086d5e5f7fd140eb983090555fb45f949cb0
[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] 69cc5cea560c0cf29dbfb0ac445f719658a9759572c59f03ba29fc6a938cc961
[INFO] running `Command { std: "docker" "start" "-a" "69cc5cea560c0cf29dbfb0ac445f719658a9759572c59f03ba29fc6a938cc961", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/sharded_ringbuf-298b02d1defc1a1a)
[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] [stderr]      Running tests/async_multi_threaded.rs (/opt/rustwide/target/debug/deps/async_multi_threaded-8b4b9650d4d669b7)
[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] [stderr]      Running tests/async_single_threaded.rs (/opt/rustwide/target/debug/deps/async_single_threaded-73b163a28b57bddf)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/srb_multi_threaded.rs (/opt/rustwide/target/debug/deps/srb_multi_threaded-ab600f5a7a3109e1)
[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] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_spsc_tasks ... ok
[INFO] [stdout] test test_spmc_tasks ... ok
[INFO] [stdout] test test_mpsc_tasks ... ok
[INFO] [stderr]      Running tests/srb_single_threaded.rs (/opt/rustwide/target/debug/deps/srb_single_threaded-b1b3203485209b5a)
[INFO] [stdout] test test_mpmc_tasks ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.37s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_spsc_tasks ... ok
[INFO] [stdout] test test_spmc_tasks ... ok
[INFO] [stdout] test test_mpsc_tasks ... ok
[INFO] [stdout] test test_mpmc_tasks ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.62s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sharded_ringbuf
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/srb/mod.rs - srb::ShardedRingBuf<T>::notify_dequeuer_in_shard (line 726) - compile ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/srb/mod.rs - srb::ShardedRingBuf<T>::notify_dequeuer_in_shard (line 726) stdout ----
[INFO] [stdout] error: expected `;`, found `}`
[INFO] [stdout]    --> src/srb/mod.rs:737:3
[INFO] [stdout]     |
[INFO] [stdout] 737 | })
[INFO] [stdout]     |   ^ help: add `;` here
[INFO] [stdout] 738 | } _doctest_main_src_srb_mod_rs_726_0() }
[INFO] [stdout]     | - unexpected token
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `JoinHandle` in this scope
[INFO] [stdout]    --> src/srb/mod.rs:727:20
[INFO] [stdout]     |
[INFO] [stdout] 727 | let notifier_task: JoinHandle<()> = tokio::spawn({
[INFO] [stdout]     |                    ^^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 726 + use std::thread::JoinHandle;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `Arc` in this scope
[INFO] [stdout]    --> src/srb/mod.rs:728:19
[INFO] [stdout]     |
[INFO] [stdout] 728 |     let rb_clone: Arc<ShardedRingBuf<T>> = rb.clone();
[INFO] [stdout]     |                   ^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 726 + use std::sync::Arc;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `ShardedRingBuf` in this scope
[INFO] [stdout]    --> src/srb/mod.rs:728:23
[INFO] [stdout]     |
[INFO] [stdout] 728 |     let rb_clone: Arc<ShardedRingBuf<T>> = rb.clone();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `T` in this scope
[INFO] [stdout]    --> src/srb/mod.rs:728:38
[INFO] [stdout]     |
[INFO] [stdout] 728 |     let rb_clone: Arc<ShardedRingBuf<T>> = rb.clone();
[INFO] [stdout]     |                                      ^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]     |
[INFO] [stdout] 726 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_srb_mod_rs_726_0<T>() {
[INFO] [stdout]     |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `rb` in this scope
[INFO] [stdout]    --> src/srb/mod.rs:728:44
[INFO] [stdout]     |
[INFO] [stdout] 728 |     let rb_clone: Arc<ShardedRingBuf<T>> = rb.clone();
[INFO] [stdout]     |                                            ^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `yield_now` in this scope
[INFO] [stdout]    --> src/srb/mod.rs:734:13
[INFO] [stdout]     |
[INFO] [stdout] 734 |             yield_now().await;
[INFO] [stdout]     |             ^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]     |
[INFO] [stdout] 726 + use std::thread::yield_now;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/srb/mod.rs - srb::ShardedRingBuf<T>::notify_dequeuer_in_shard (line 726)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.24s
[INFO] [stdout] 
[INFO] [stdout] all doctests ran in 0.33s; merged doctests compilation took 0.09s
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "69cc5cea560c0cf29dbfb0ac445f719658a9759572c59f03ba29fc6a938cc961", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69cc5cea560c0cf29dbfb0ac445f719658a9759572c59f03ba29fc6a938cc961", kill_on_drop: false }`
[INFO] [stdout] 69cc5cea560c0cf29dbfb0ac445f719658a9759572c59f03ba29fc6a938cc961
