[INFO] fetching crate completable_future 0.1.0... [INFO] testing completable_future-0.1.0 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799 [INFO] extracting crate completable_future 0.1.0 into /workspace/builds/worker-44/source [INFO] validating manifest of crates.io crate completable_future 0.1.0 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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-44/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded num_cpus v1.13.0 [INFO] [stderr] Downloaded maybe-uninit v2.0.0 [INFO] [stderr] Downloaded cfg-if v0.1.10 [INFO] [stderr] Downloaded tokio-executor v0.1.10 [INFO] [stderr] Downloaded tokio-reactor v0.1.12 [INFO] [stderr] Downloaded iovec v0.1.4 [INFO] [stderr] Downloaded tokio-io v0.1.13 [INFO] [stderr] Downloaded tokio-sync v0.1.8 [INFO] [stderr] Downloaded futures v0.1.31 [INFO] [stderr] Downloaded parking_lot_core v0.6.2 [INFO] [stderr] Downloaded tokio-timer v0.2.13 [INFO] [stderr] Downloaded miow v0.2.2 [INFO] [stderr] Downloaded tokio-fs v0.1.7 [INFO] [stderr] Downloaded crossbeam-queue v0.2.3 [INFO] [stderr] Downloaded crossbeam-epoch v0.8.2 [INFO] [stderr] Downloaded tokio-tcp v0.1.4 [INFO] [stderr] Downloaded tokio-current-thread v0.1.7 [INFO] [stderr] Downloaded tokio-udp v0.1.6 [INFO] [stderr] Downloaded mio-uds v0.6.8 [INFO] [stderr] Downloaded memoffset v0.5.6 [INFO] [stderr] Downloaded tokio-threadpool v0.1.18 [INFO] [stderr] Downloaded tokio-codec v0.1.2 [INFO] [stderr] Downloaded crossbeam-deque v0.7.4 [INFO] [stderr] Downloaded net2 v0.2.37 [INFO] [stderr] Downloaded mio v0.6.23 [INFO] [stderr] Downloaded parking_lot v0.9.0 [INFO] [stderr] Downloaded scopeguard v1.1.0 [INFO] [stderr] Downloaded lock_api v0.3.4 [INFO] [stderr] Downloaded smallvec v0.6.14 [INFO] [stderr] Downloaded slab v0.4.5 [INFO] [stderr] Downloaded tokio-uds v0.2.7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e2f24c7b3ad94b82b61249b9a1a491654e869d938707457957c7db4b26779177 [INFO] running `Command { std: "docker" "start" "-a" "e2f24c7b3ad94b82b61249b9a1a491654e869d938707457957c7db4b26779177", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e2f24c7b3ad94b82b61249b9a1a491654e869d938707457957c7db4b26779177", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e2f24c7b3ad94b82b61249b9a1a491654e869d938707457957c7db4b26779177", kill_on_drop: false }` [INFO] [stdout] e2f24c7b3ad94b82b61249b9a1a491654e869d938707457957c7db4b26779177 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a48e294a49c6eb9c92b38776892efaf9bf2059c6be47fc20f33fcc7a14d658a5 [INFO] running `Command { std: "docker" "start" "-a" "a48e294a49c6eb9c92b38776892efaf9bf2059c6be47fc20f33fcc7a14d658a5", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [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 4.05s [INFO] running `Command { std: "docker" "inspect" "a48e294a49c6eb9c92b38776892efaf9bf2059c6be47fc20f33fcc7a14d658a5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a48e294a49c6eb9c92b38776892efaf9bf2059c6be47fc20f33fcc7a14d658a5", kill_on_drop: false }` [INFO] [stdout] a48e294a49c6eb9c92b38776892efaf9bf2059c6be47fc20f33fcc7a14d658a5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 402f2fc08d3cbaf1ade8d407837ba2ce80f55c9bd0bc4b1f1f0c27e2415ee135 [INFO] running `Command { std: "docker" "start" "-a" "402f2fc08d3cbaf1ade8d407837ba2ce80f55c9bd0bc4b1f1f0c27e2415ee135", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling slab v0.4.5 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling tokio-sync v0.1.8 [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 rustc_version v0.2.3 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling net2 v0.2.37 [INFO] [stderr] Compiling smallvec v0.6.14 [INFO] [stderr] Compiling bytes v0.4.12 [INFO] [stderr] Compiling parking_lot_core v0.6.2 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling memoffset v0.5.6 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Compiling tokio-io v0.1.13 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling tokio-codec v0.1.2 [INFO] [stderr] Compiling mio-uds v0.6.8 [INFO] [stderr] Compiling tokio-executor v0.1.10 [INFO] [stderr] Compiling crossbeam-queue v0.2.3 [INFO] [stderr] Compiling tokio-reactor v0.1.12 [INFO] [stderr] Compiling tokio-timer v0.2.13 [INFO] [stderr] Compiling tokio-current-thread v0.1.7 [INFO] [stderr] Compiling crossbeam-deque v0.7.4 [INFO] [stderr] Compiling tokio-threadpool v0.1.18 [INFO] [stderr] Compiling tokio-uds v0.2.7 [INFO] [stderr] Compiling tokio-udp v0.1.6 [INFO] [stderr] Compiling tokio-tcp v0.1.4 [INFO] [stderr] Compiling tokio-fs v0.1.7 [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] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 4.85s [INFO] running `Command { std: "docker" "inspect" "402f2fc08d3cbaf1ade8d407837ba2ce80f55c9bd0bc4b1f1f0c27e2415ee135", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "402f2fc08d3cbaf1ade8d407837ba2ce80f55c9bd0bc4b1f1f0c27e2415ee135", kill_on_drop: false }` [INFO] [stdout] 402f2fc08d3cbaf1ade8d407837ba2ce80f55c9bd0bc4b1f1f0c27e2415ee135 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 0be7f360f6672f8befa23587dc0af9093afef66b79ada535e849959052895e9e [INFO] running `Command { std: "docker" "start" "-a" "0be7f360f6672f8befa23587dc0af9093afef66b79ada535e849959052895e9e", 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 0.10s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/completable_future-6c5c427d942484d8) [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/tests.rs (/opt/rustwide/target/debug/deps/tests-7b4b2f3dc111e42f) [INFO] [stdout] [INFO] [stdout] running 6 tests [INFO] [stdout] test test_errored_future ... ok [INFO] [stdout] test test_completed_future ... ok [INFO] [stdout] test test_signal_complete ... ok [INFO] [stdout] test test_signal_error ... ok [INFO] [stdout] test test_complete_once ... ok [INFO] [stdout] test test_error_once ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [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 2.03s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "0be7f360f6672f8befa23587dc0af9093afef66b79ada535e849959052895e9e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0be7f360f6672f8befa23587dc0af9093afef66b79ada535e849959052895e9e", kill_on_drop: false }` [INFO] [stdout] 0be7f360f6672f8befa23587dc0af9093afef66b79ada535e849959052895e9e