[INFO] fetching crate refreshable 1.0.1...
[INFO] testing refreshable-1.0.1 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate refreshable 1.0.1 into /workspace/builds/worker-29/source
[INFO] validating manifest of crates.io crate refreshable 1.0.1 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate refreshable 1.0.1
[INFO] finished tweaking crates.io crate refreshable 1.0.1
[INFO] tweaked toml for crates.io crate refreshable 1.0.1 written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "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-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5a75fbc7add17becbd5dca286a1ac5b79cf784824780d8745f67afd556873ca9
[INFO] running `Command { std: "docker" "start" "-a" "5a75fbc7add17becbd5dca286a1ac5b79cf784824780d8745f67afd556873ca9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a75fbc7add17becbd5dca286a1ac5b79cf784824780d8745f67afd556873ca9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a75fbc7add17becbd5dca286a1ac5b79cf784824780d8745f67afd556873ca9", kill_on_drop: false }`
[INFO] [stdout] 5a75fbc7add17becbd5dca286a1ac5b79cf784824780d8745f67afd556873ca9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6986b6079a5e2c2b850f9fc853494ea356191ee5c06a06ba74ecff4902eb3040
[INFO] running `Command { std: "docker" "start" "-a" "6986b6079a5e2c2b850f9fc853494ea356191ee5c06a06ba74ecff4902eb3040", kill_on_drop: false }`
[INFO] [stderr]    Compiling arc-swap v1.5.0
[INFO] [stderr]    Compiling refreshable v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]    --> src/lib.rs:109:30
[INFO] [stdout]     |
[INFO] [stdout] 109 |     _cleanup: Option<Arc<dyn Drop + Sync + Send>>,
[INFO] [stdout]     |                              ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dyn_drop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]    --> src/lib.rs:135:29
[INFO] [stdout]     |
[INFO] [stdout] 135 |     cleanup: Option<Arc<dyn Drop + Sync + Send>>,
[INFO] [stdout]     |                             ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.61s
[INFO] running `Command { std: "docker" "inspect" "6986b6079a5e2c2b850f9fc853494ea356191ee5c06a06ba74ecff4902eb3040", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6986b6079a5e2c2b850f9fc853494ea356191ee5c06a06ba74ecff4902eb3040", kill_on_drop: false }`
[INFO] [stdout] 6986b6079a5e2c2b850f9fc853494ea356191ee5c06a06ba74ecff4902eb3040
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bbf30f63fade07464ba65b22ac9eaa6a521ed3a6607750d37d51308802d35aaa
[INFO] running `Command { std: "docker" "start" "-a" "bbf30f63fade07464ba65b22ac9eaa6a521ed3a6607750d37d51308802d35aaa", kill_on_drop: false }`
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]    --> src/lib.rs:109:30
[INFO] [stdout]     |
[INFO] [stdout] 109 |     _cleanup: Option<Arc<dyn Drop + Sync + Send>>,
[INFO] [stdout]     |                              ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dyn_drop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]    --> src/lib.rs:135:29
[INFO] [stdout]     |
[INFO] [stdout] 135 |     cleanup: Option<Arc<dyn Drop + Sync + Send>>,
[INFO] [stdout]     |                             ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling refreshable v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]    --> src/lib.rs:109:30
[INFO] [stdout]     |
[INFO] [stdout] 109 |     _cleanup: Option<Arc<dyn Drop + Sync + Send>>,
[INFO] [stdout]     |                              ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dyn_drop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]    --> src/lib.rs:135:29
[INFO] [stdout]     |
[INFO] [stdout] 135 |     cleanup: Option<Arc<dyn Drop + Sync + Send>>,
[INFO] [stdout]     |                             ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "bbf30f63fade07464ba65b22ac9eaa6a521ed3a6607750d37d51308802d35aaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbf30f63fade07464ba65b22ac9eaa6a521ed3a6607750d37d51308802d35aaa", kill_on_drop: false }`
[INFO] [stdout] bbf30f63fade07464ba65b22ac9eaa6a521ed3a6607750d37d51308802d35aaa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d2edcb056851415df8c17790a8a38ef4362583dc350d1eacd0f353625338534e
[INFO] running `Command { std: "docker" "start" "-a" "d2edcb056851415df8c17790a8a38ef4362583dc350d1eacd0f353625338534e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stderr]    --> src/lib.rs:109:30
[INFO] [stderr]     |
[INFO] [stderr] 109 |     _cleanup: Option<Arc<dyn Drop + Sync + Send>>,
[INFO] [stderr]     |                              ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dyn_drop)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stderr]    --> src/lib.rs:135:29
[INFO] [stderr]     |
[INFO] [stderr] 135 |     cleanup: Option<Arc<dyn Drop + Sync + Send>>,
[INFO] [stderr]     |                             ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `refreshable` (lib) generated 2 warnings
[INFO] [stderr] warning: `refreshable` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/refreshable-3c1372f24296daf1)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test test::equal_refresh_is_noop ... ok
[INFO] [stdout] test test::error_on_subscribe_doesnt_stay ... ok
[INFO] [stdout] test test::map_basics ... ok
[INFO] [stdout] test test::errors_are_stable ... ok
[INFO] [stdout] test test::map_callback_cleanup ... ok
[INFO] [stdout] test test::subscribe_unsubscribe ... ok
[INFO] [stdout] test test::map_error_propagation ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests refreshable
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 33) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.55s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d2edcb056851415df8c17790a8a38ef4362583dc350d1eacd0f353625338534e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2edcb056851415df8c17790a8a38ef4362583dc350d1eacd0f353625338534e", kill_on_drop: false }`
[INFO] [stdout] d2edcb056851415df8c17790a8a38ef4362583dc350d1eacd0f353625338534e