[INFO] fetching crate threadpool 1.8.1...
[INFO] testing threadpool-1.8.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate threadpool 1.8.1 into /workspace/builds/worker-105/source
[INFO] validating manifest of crates.io crate threadpool 1.8.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate threadpool 1.8.1
[INFO] finished tweaking crates.io crate threadpool 1.8.1
[INFO] tweaked toml for crates.io crate threadpool 1.8.1 written to /workspace/builds/worker-105/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c2f97239d51f1765c8dfae2ff26fd4c70f297530e6b6d7286ee89716d5ebf22d
[INFO] running `Command { std: "docker" "start" "-a" "c2f97239d51f1765c8dfae2ff26fd4c70f297530e6b6d7286ee89716d5ebf22d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2f97239d51f1765c8dfae2ff26fd4c70f297530e6b6d7286ee89716d5ebf22d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2f97239d51f1765c8dfae2ff26fd4c70f297530e6b6d7286ee89716d5ebf22d", kill_on_drop: false }`
[INFO] [stdout] c2f97239d51f1765c8dfae2ff26fd4c70f297530e6b6d7286ee89716d5ebf22d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d869a50b59e23cb0bcd89995f5cfb13346e817fe25cb3c13f8e8d029538e760
[INFO] running `Command { std: "docker" "start" "-a" "4d869a50b59e23cb0bcd89995f5cfb13346e817fe25cb3c13f8e8d029538e760", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling threadpool v1.8.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:99:22
[INFO] [stdout]    |
[INFO] [stdout] 99 | type Thunk<'a> = Box<FnBox + Send + 'a>;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox + Send + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/lib.rs:631:42
[INFO] [stdout]     |
[INFO] [stdout] 631 |         self.shared_data.join_generation.compare_and_swap(
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.57s
[INFO] running `Command { std: "docker" "inspect" "4d869a50b59e23cb0bcd89995f5cfb13346e817fe25cb3c13f8e8d029538e760", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d869a50b59e23cb0bcd89995f5cfb13346e817fe25cb3c13f8e8d029538e760", kill_on_drop: false }`
[INFO] [stdout] 4d869a50b59e23cb0bcd89995f5cfb13346e817fe25cb3c13f8e8d029538e760
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a54fe9dbeb72d386b13dc786a47bb1e068d906649f2a941f83d754e6b673e5b
[INFO] running `Command { std: "docker" "start" "-a" "3a54fe9dbeb72d386b13dc786a47bb1e068d906649f2a941f83d754e6b673e5b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:99:22
[INFO] [stdout]    |
[INFO] [stdout] 99 | type Thunk<'a> = Box<FnBox + Send + 'a>;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox + Send + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/lib.rs:631:42
[INFO] [stdout]     |
[INFO] [stdout] 631 |         self.shared_data.join_generation.compare_and_swap(
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling threadpool v1.8.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:99:22
[INFO] [stdout]    |
[INFO] [stdout] 99 | type Thunk<'a> = Box<FnBox + Send + 'a>;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox + Send + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/lib.rs:631:42
[INFO] [stdout]     |
[INFO] [stdout] 631 |         self.shared_data.join_generation.compare_and_swap(
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Result::<T, E>::is_ok` that must be used
[INFO] [stdout]    --> src/lib.rs:933:17
[INFO] [stdout]     |
[INFO] [stdout] 933 |                 tx.send(1).is_ok();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.08s
[INFO] running `Command { std: "docker" "inspect" "3a54fe9dbeb72d386b13dc786a47bb1e068d906649f2a941f83d754e6b673e5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a54fe9dbeb72d386b13dc786a47bb1e068d906649f2a941f83d754e6b673e5b", kill_on_drop: false }`
[INFO] [stdout] 3a54fe9dbeb72d386b13dc786a47bb1e068d906649f2a941f83d754e6b673e5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7e10cdff7e335a93aa8f15ff62c315da6e86bd312fc25149b8de9dcec920420e
[INFO] running `Command { std: "docker" "start" "-a" "7e10cdff7e335a93aa8f15ff62c315da6e86bd312fc25149b8de9dcec920420e", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:99:22
[INFO] [stderr]    |
[INFO] [stderr] 99 | type Thunk<'a> = Box<FnBox + Send + 'a>;
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox + Send + 'a`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]    --> src/lib.rs:631:42
[INFO] [stderr]     |
[INFO] [stderr] 631 |         self.shared_data.join_generation.compare_and_swap(
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `threadpool` (lib) generated 2 warnings
[INFO] [stderr] warning: unused return value of `Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> src/lib.rs:933:17
[INFO] [stderr]     |
[INFO] [stderr] 933 |                 tx.send(1).is_ok();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stderr] 
[INFO] [stderr] warning: `threadpool` (lib test) generated 3 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/threadpool-4ecc83e51d17917a)
[INFO] [stdout] 
[INFO] [stdout] running 21 tests
[INFO] [stdout] test test::test_cloned_eq ... ok
[INFO] [stdout] test test::test_empty_pool ... ok
[INFO] [stdout] test test::test_send ... ok
[INFO] [stdout] test test::test_send_shared_data ... ok
[INFO] [stdout] test test::test_sync_shared_data ... ok
[INFO] [stdout] test test::test_multi_join ... ok
[INFO] [stdout] test test::test_works ... ok
[INFO] [stdout] test test::test_shrink ... ok
[INFO] [stdout] test test::test_name ... ok
[INFO] [stdout] test test::test_zero_tasks_panic - should panic ... ok
[INFO] [stdout] test test::test_should_not_panic_on_drop_if_subtasks_panic_after_drop ... ok
[INFO] [stdout] test test::test_recovery_from_subtask_panic ... ok
[INFO] [stdout] test test::test_active_count ... ok
[INFO] [stdout] test test::test_debug ... ok
[INFO] [stdout] test test::test_join_wavesurfer ... ok
[INFO] [stdout] test test::test_clone ... ok
[INFO] [stdout] test test::test_massive_task_creation ... ok
[INFO] [stdout] test test::test_no_fun_or_joy ... ok
[INFO] [stdout] test test::test_set_num_threads_decreasing ... ok
[INFO] [stdout] test test::test_repeate_join ... ok
[INFO] [stdout] test test::test_set_num_threads_increasing ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 21 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 24.08s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests threadpool
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test src/lib.rs - ThreadPool::eq (line 707) ... ok
[INFO] [stdout] test src/lib.rs - Builder::build (line 275) ... ok
[INFO] [stdout] test src/lib.rs - Builder::new (line 171) ... ok
[INFO] [stdout] test src/lib.rs - Builder::num_threads (line 195) ... ok
[INFO] [stdout] test src/lib.rs - Builder (line 151) ... ok
[INFO] [stdout] test src/lib.rs - ThreadPool::max_count (line 487) ... ok
[INFO] [stdout] test src/lib.rs - ThreadPool::join (line 597) ... ok
[INFO] [stdout] test src/lib.rs - ThreadPool::with_name (line 380) ... ok
[INFO] [stdout] test src/lib.rs - Builder::thread_name (line 223) ... ok
[INFO] [stdout] test src/lib.rs - Builder::thread_stack_size (line 252) ... ok
[INFO] [stdout] test src/lib.rs - ThreadPool::execute (line 417) ... ok
[INFO] [stdout] test src/lib.rs - ThreadPool::new (line 362) ... ok
[INFO] [stdout] test src/lib.rs - (line 48) ... ok
[INFO] [stdout] test src/lib.rs - ThreadPool::panic_count (line 504) ... ok
[INFO] [stdout] test src/lib.rs - ThreadPool::clone (line 645) ... ok
[INFO] [stdout] test src/lib.rs - (line 22) ... ok
[INFO] [stdout] test src/lib.rs - ThreadPool::active_count (line 464) ... ok
[INFO] [stdout] test src/lib.rs - ThreadPool::queued_count (line 441) ... ok
[INFO] [stdout] test src/lib.rs - ThreadPool::set_num_threads (line 540) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.99s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7e10cdff7e335a93aa8f15ff62c315da6e86bd312fc25149b8de9dcec920420e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e10cdff7e335a93aa8f15ff62c315da6e86bd312fc25149b8de9dcec920420e", kill_on_drop: false }`
[INFO] [stdout] 7e10cdff7e335a93aa8f15ff62c315da6e86bd312fc25149b8de9dcec920420e