[INFO] fetching crate completable_future 0.1.0... [INFO] testing completable_future-0.1.0 against beta-2022-04-10 for beta-1.61-1 [INFO] extracting crate completable_future 0.1.0 into /workspace/builds/worker-12/source [INFO] validating manifest of crates.io crate completable_future 0.1.0 on toolchain beta-2022-04-10 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate completable_future 0.1.0 [INFO] finished tweaking crates.io crate completable_future 0.1.0 [INFO] tweaked toml for crates.io crate completable_future 0.1.0 written to /workspace/builds/worker-12/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b26cc3fa68500ce30f90b73ccfc48f4ab0ccebe0707eeaba88df0615757401d4 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "b26cc3fa68500ce30f90b73ccfc48f4ab0ccebe0707eeaba88df0615757401d4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b26cc3fa68500ce30f90b73ccfc48f4ab0ccebe0707eeaba88df0615757401d4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b26cc3fa68500ce30f90b73ccfc48f4ab0ccebe0707eeaba88df0615757401d4", kill_on_drop: false }` [INFO] [stdout] b26cc3fa68500ce30f90b73ccfc48f4ab0ccebe0707eeaba88df0615757401d4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 8d3a1ed89cb65d03a95d43f1608cf99c397700b3e79e64f1508483240023c29c [INFO] running `Command { std: "docker" "start" "-a" "8d3a1ed89cb65d03a95d43f1608cf99c397700b3e79e64f1508483240023c29c", kill_on_drop: false }` [INFO] [stderr] Compiling completable_future v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:77:17 [INFO] [stdout] | [INFO] [stdout] 77 | mem::replace(self, WakerWrapper::Registered(waker)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.33s [INFO] running `Command { std: "docker" "inspect" "8d3a1ed89cb65d03a95d43f1608cf99c397700b3e79e64f1508483240023c29c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8d3a1ed89cb65d03a95d43f1608cf99c397700b3e79e64f1508483240023c29c", kill_on_drop: false }` [INFO] [stdout] 8d3a1ed89cb65d03a95d43f1608cf99c397700b3e79e64f1508483240023c29c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 1aa6759483d6f50293c0e607b1f0084404ac8be8bdffcfee1b5860f3fa3c8f09 [INFO] running `Command { std: "docker" "start" "-a" "1aa6759483d6f50293c0e607b1f0084404ac8be8bdffcfee1b5860f3fa3c8f09", kill_on_drop: false }` [INFO] [stderr] Compiling bytes v0.4.12 [INFO] [stderr] Compiling mio-uds v0.6.8 [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:77:17 [INFO] [stdout] | [INFO] [stdout] 77 | mem::replace(self, WakerWrapper::Registered(waker)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling tokio-io v0.1.13 [INFO] [stderr] Compiling tokio-reactor v0.1.12 [INFO] [stderr] Compiling tokio-codec v0.1.2 [INFO] [stderr] Compiling tokio-fs v0.1.7 [INFO] [stderr] Compiling tokio-tcp v0.1.4 [INFO] [stderr] Compiling tokio-uds v0.2.7 [INFO] [stderr] Compiling tokio-udp v0.1.6 [INFO] [stderr] Compiling tokio v0.1.22 [INFO] [stderr] Compiling completable_future v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:77:17 [INFO] [stdout] | [INFO] [stdout] 77 | mem::replace(self, WakerWrapper::Registered(waker)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> tests/tests.rs:75:7 [INFO] [stdout] | [INFO] [stdout] 75 | let mut tm = mutate_counter.clone(); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> tests/tests.rs:97:7 [INFO] [stdout] | [INFO] [stdout] 97 | let mut tm = mutate_counter.clone(); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 11.25s [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/completable_future-010ecfce1f5e3f96) [INFO] [stderr] Executable tests/tests.rs (/opt/rustwide/target/debug/deps/tests-8d46c687085d933e) [INFO] running `Command { std: "docker" "inspect" "1aa6759483d6f50293c0e607b1f0084404ac8be8bdffcfee1b5860f3fa3c8f09", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1aa6759483d6f50293c0e607b1f0084404ac8be8bdffcfee1b5860f3fa3c8f09", kill_on_drop: false }` [INFO] [stdout] 1aa6759483d6f50293c0e607b1f0084404ac8be8bdffcfee1b5860f3fa3c8f09 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 862298b495bf483e5175e51176ef35cef7eba32734de9b747d747442597868f2 [INFO] running `Command { std: "docker" "start" "-a" "862298b495bf483e5175e51176ef35cef7eba32734de9b747d747442597868f2", kill_on_drop: false }` [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/lib.rs:77:17 [INFO] [stderr] | [INFO] [stderr] 77 | mem::replace(self, WakerWrapper::Registered(waker)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: `completable_future` (lib) generated 1 warning [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> tests/tests.rs:75:7 [INFO] [stderr] | [INFO] [stderr] 75 | let mut tm = mutate_counter.clone(); [INFO] [stderr] | ----^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> tests/tests.rs:97:7 [INFO] [stderr] | [INFO] [stderr] 97 | let mut tm = mutate_counter.clone(); [INFO] [stderr] | ----^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: `completable_future` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] warning: `completable_future` (test "tests") generated 2 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.11s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/completable_future-010ecfce1f5e3f96) [INFO] [stderr] Running tests/tests.rs (/opt/rustwide/target/debug/deps/tests-8d46c687085d933e) [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] [stdout] [INFO] [stdout] running 6 tests [INFO] [stdout] test test_errored_future ... ok [INFO] [stdout] test test_complete_once ... ok [INFO] [stdout] test test_completed_future ... ok [INFO] [stdout] test test_error_once ... ok [INFO] [stdout] test test_signal_error ... ok [INFO] [stdout] test test_signal_complete ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s [INFO] [stdout] [INFO] [stderr] Doc-tests completable_future [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test src/lib.rs - (line 20) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.39s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "862298b495bf483e5175e51176ef35cef7eba32734de9b747d747442597868f2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "862298b495bf483e5175e51176ef35cef7eba32734de9b747d747442597868f2", kill_on_drop: false }` [INFO] [stdout] 862298b495bf483e5175e51176ef35cef7eba32734de9b747d747442597868f2