[INFO] fetching crate piscina 0.2.1...
[INFO] testing piscina-0.2.1 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate piscina 0.2.1 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate piscina 0.2.1
[INFO] finished tweaking crates.io crate piscina 0.2.1
[INFO] tweaked toml for crates.io crate piscina 0.2.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate piscina 0.2.1 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 25 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-test v0.3.31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d561441487e3d57cbd7234e21f9bf575f32985eb6f94c3bbc32922f83dcf9efe
[INFO] running `Command { std: "docker" "start" "-a" "d561441487e3d57cbd7234e21f9bf575f32985eb6f94c3bbc32922f83dcf9efe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d561441487e3d57cbd7234e21f9bf575f32985eb6f94c3bbc32922f83dcf9efe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d561441487e3d57cbd7234e21f9bf575f32985eb6f94c3bbc32922f83dcf9efe", kill_on_drop: false }`
[INFO] [stdout] d561441487e3d57cbd7234e21f9bf575f32985eb6f94c3bbc32922f83dcf9efe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 932a9323297e380321fcd22d90df8751f0e08ab1d7500df7135b641efedf759a
[INFO] running `Command { std: "docker" "start" "-a" "932a9323297e380321fcd22d90df8751f0e08ab1d7500df7135b641efedf759a", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling piscina v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `pop` is never used
[INFO] [stdout]   --> src/internal.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub trait PoolStore {
[INFO] [stdout]    |           --------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 10 |     fn pop(&mut self) -> Option<Self::Item>;
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.10s
[INFO] running `Command { std: "docker" "inspect" "932a9323297e380321fcd22d90df8751f0e08ab1d7500df7135b641efedf759a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "932a9323297e380321fcd22d90df8751f0e08ab1d7500df7135b641efedf759a", kill_on_drop: false }`
[INFO] [stdout] 932a9323297e380321fcd22d90df8751f0e08ab1d7500df7135b641efedf759a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 911903b9b41a26f109a02ae942fccb98878c72b899ffb328a4b9db990ba6a67d
[INFO] running `Command { std: "docker" "start" "-a" "911903b9b41a26f109a02ae942fccb98878c72b899ffb328a4b9db990ba6a67d", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling pin-project-internal v1.1.10
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling pin-project v1.1.10
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling piscina v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `pop` is never used
[INFO] [stdout]   --> src/internal.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub trait PoolStore {
[INFO] [stdout]    |           --------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 10 |     fn pop(&mut self) -> Option<Self::Item>;
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling futures-test v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stdout] warning: method `pop` is never used
[INFO] [stdout]   --> src/internal.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub trait PoolStore {
[INFO] [stdout]    |           --------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 10 |     fn pop(&mut self) -> Option<Self::Item>;
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/pool.rs:632:9
[INFO] [stdout]     |
[INFO] [stdout] 632 |         drop(item);
[INFO] [stdout]     |         ^^^^^----^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              argument has type `i32`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 632 -         drop(item);
[INFO] [stdout] 632 +         let _ = item;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/priority.rs:841:9
[INFO] [stdout]     |
[INFO] [stdout] 841 |         drop(item);
[INFO] [stdout]     |         ^^^^^----^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              argument has type `&str`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 841 -         drop(item);
[INFO] [stdout] 841 +         let _ = item;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 9.69s
[INFO] running `Command { std: "docker" "inspect" "911903b9b41a26f109a02ae942fccb98878c72b899ffb328a4b9db990ba6a67d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "911903b9b41a26f109a02ae942fccb98878c72b899ffb328a4b9db990ba6a67d", kill_on_drop: false }`
[INFO] [stdout] 911903b9b41a26f109a02ae942fccb98878c72b899ffb328a4b9db990ba6a67d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] ce84908da17b1465431441a9f0ad2099f0c936cf470037ad5e41b05190c48f39
[INFO] running `Command { std: "docker" "start" "-a" "ce84908da17b1465431441a9f0ad2099f0c936cf470037ad5e41b05190c48f39", kill_on_drop: false }`
[INFO] [stderr] warning: method `pop` is never used
[INFO] [stderr]   --> src/internal.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 6  | pub trait PoolStore {
[INFO] [stderr]    |           --------- method in this trait
[INFO] [stderr] ...
[INFO] [stderr] 10 |     fn pop(&mut self) -> Option<Self::Item>;
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `piscina` (lib) generated 1 warning
[INFO] [stderr] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stderr]    --> src/pool.rs:632:9
[INFO] [stderr]     |
[INFO] [stderr] 632 |         drop(item);
[INFO] [stderr]     |         ^^^^^----^
[INFO] [stderr]     |              |
[INFO] [stderr]     |              argument has type `i32`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]     |
[INFO] [stderr] 632 -         drop(item);
[INFO] [stderr] 632 +         let _ = item;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stderr]    --> src/priority.rs:841:9
[INFO] [stderr]     |
[INFO] [stderr] 841 |         drop(item);
[INFO] [stderr]     |         ^^^^^----^
[INFO] [stderr]     |              |
[INFO] [stderr]     |              argument has type `&str`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]     |
[INFO] [stderr] 841 -         drop(item);
[INFO] [stderr] 841 +         let _ = item;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `piscina` (lib test) generated 3 warnings (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/piscina-07a6706081308106)
[INFO] [stdout] 
[INFO] [stdout] running 49 tests
[INFO] [stdout] test pool::tests::blocking_get_from_non_empty_pool_returns_item ... ok
[INFO] [stdout] test pool::tests::create_pool ... ok
[INFO] [stdout] test pool::tests::create_pool_with_capacity ... ok
[INFO] [stdout] test pool::tests::poll_get_after_dropping_borrowed_item_returns_ready ... ok
[INFO] [stdout] test pool::tests::poll_pop_after_dropping_borrowed_item_returns_ready ... ok
[INFO] [stdout] test pool::tests::poll_pop_from_empty_pool_returns_pending ... ok
[INFO] [stdout] test pool::tests::poll_get_from_pool_of_one_item_returns_ready ... ok
[INFO] [stdout] test pool::tests::poll_get_from_exhausted_pool_returns_pending ... ok
[INFO] [stdout] test pool::tests::poll_get_after_dropping_borrowed_item_and_putting_new_item_returns_ready ... ok
[INFO] [stdout] test pool::tests::poll_pop_from_exhausted_pool_returns_pending ... ok
[INFO] [stdout] test pool::tests::poll_pop_from_pool_of_one_item_returns_ready ... ok
[INFO] [stdout] test pool::tests::poll_pop_reduce_len_by_one ... ok
[INFO] [stdout] test pool::tests::poll_pop_after_dropping_removed_item_returns_pending ... ok
[INFO] [stdout] test pool::tests::try_get_after_dropping_borrowed_item_and_putting_new_item_returns_some ... ok
[INFO] [stdout] test pool::tests::try_get_after_dropping_borrowed_item_returns_some ... ok
[INFO] [stdout] test pool::tests::pool_len_does_not_change_after_borrowing_item ... ok
[INFO] [stdout] test pool::tests::poll_get_from_empty_pool_returns_pending ... ok
[INFO] [stdout] test pool::tests::try_get_from_empty_pool_returns_none ... ok
[INFO] [stdout] test pool::tests::try_get_from_exhausted_pool_returns_none ... ok
[INFO] [stdout] test pool::tests::try_pop_from_empty_pool_returns_none ... ok
[INFO] [stdout] test priority::tests::poll_get_from_pool_of_one_item_returns_ready ... ok
[INFO] [stdout] test priority::tests::poll_pop_after_dropping_borrowed_item_returns_ready ... ok
[INFO] [stdout] test priority::tests::create_priority_pool ... ok
[INFO] [stdout] test priority::tests::poll_pop_from_empty_pool_returns_pending ... ok
[INFO] [stdout] test priority::tests::poll_pop_from_exhausted_pool_returns_pending ... ok
[INFO] [stdout] test priority::tests::poll_get_after_dropping_borrowed_item_and_putting_new_item_returns_ready ... ok
[INFO] [stdout] test pool::tests::try_pop_reduce_len_by_one ... ok
[INFO] [stdout] test priority::tests::poll_get_after_dropping_borrowed_item_returns_ready ... ok
[INFO] [stdout] test priority::tests::blocking_get_from_non_empty_pool_returns_item ... ok
[INFO] [stdout] test priority::tests::poll_get_returns_highest_priority_item ... ok
[INFO] [stdout] test priority::tests::poll_pop_reduce_len_by_one ... ok
[INFO] [stdout] test priority::tests::pool_len_does_not_change_after_borrowing_item ... ok
[INFO] [stdout] test priority::tests::try_get_after_dropping_borrowed_item_and_putting_new_item_returns_some ... ok
[INFO] [stdout] test priority::tests::create_priority_pool_with_capacity ... ok
[INFO] [stdout] test priority::tests::poll_get_from_exhausted_pool_returns_pending ... ok
[INFO] [stdout] test priority::tests::poll_get_after_dropping_borrowed_item_returns_highest_priority_item ... ok
[INFO] [stdout] test priority::tests::try_get_after_dropping_borrowed_item_returns_highest_priority_item ... ok
[INFO] [stdout] test priority::tests::try_get_after_dropping_borrowed_item_returns_some ... ok
[INFO] [stdout] test priority::tests::try_get_from_non_empty_pool_returns_some ... ok
[INFO] [stdout] test pool::tests::try_get_from_non_empty_pool_returns_some ... ok
[INFO] [stdout] test priority::tests::poll_pop_from_pool_of_one_item_returns_ready ... ok
[INFO] [stdout] test priority::tests::poll_get_from_empty_pool_returns_pending ... ok
[INFO] [stdout] test priority::tests::poll_pop_after_dropping_removed_item_returns_pending ... ok
[INFO] [stdout] test priority::tests::try_get_from_empty_pool_returns_none ... ok
[INFO] [stdout] test priority::tests::try_get_returns_highest_priority_item ... ok
[INFO] [stdout] test priority::tests::try_pop_after_dropping_borrowed_item_returns_highest_priority_item ... ok
[INFO] [stdout] test priority::tests::try_pop_from_empty_pool_returns_none ... ok
[INFO] [stdout] test priority::tests::try_pop_highest_priority_item ... ok
[INFO] [stdout] test priority::tests::try_pop_reduce_len_by_one ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 49 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ce84908da17b1465431441a9f0ad2099f0c936cf470037ad5e41b05190c48f39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce84908da17b1465431441a9f0ad2099f0c936cf470037ad5e41b05190c48f39", kill_on_drop: false }`
[INFO] [stdout] ce84908da17b1465431441a9f0ad2099f0c936cf470037ad5e41b05190c48f39