[INFO] fetching crate romio 0.3.0-alpha.10...
[INFO] testing romio-0.3.0-alpha.10 against master#1f7f8ea0721a3b1eb73e6c6d25cccb371434b320 for pr-154065-1
[INFO] extracting crate romio 0.3.0-alpha.10 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate romio 0.3.0-alpha.10
[INFO] finished tweaking crates.io crate romio 0.3.0-alpha.10
[INFO] tweaked toml for crates.io crate romio 0.3.0-alpha.10 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate romio 0.3.0-alpha.10 on toolchain 1f7f8ea0721a3b1eb73e6c6d25cccb371434b320
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate romio 0.3.0-alpha.10 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded remove_dir_all v0.5.1
[INFO] [stderr]   Downloaded tempdir v0.3.7
[INFO] [stderr]   Downloaded slab v0.4.2
[INFO] [stderr]   Downloaded rand_core v0.4.0
[INFO] [stderr]   Downloaded getrandom v0.1.12
[INFO] [stderr]   Downloaded num_cpus v1.10.0
[INFO] [stderr]   Downloaded wasi v0.7.0
[INFO] [stderr]   Downloaded async-ready v3.0.0
[INFO] [stderr]   Downloaded futures-executor-preview v0.3.0-alpha.18
[INFO] [stderr]   Downloaded async-datagram v3.0.0
[INFO] [stderr]   Downloaded pin-utils v0.1.0-alpha.4
[INFO] [stderr]   Downloaded futures-channel-preview v0.3.0-alpha.18
[INFO] [stderr]   Downloaded byteorder v1.3.1
[INFO] [stderr]   Downloaded bytes v0.4.11
[INFO] [stderr]   Downloaded futures-preview v0.3.0-alpha.18
[INFO] [stderr]   Downloaded parking_lot_core v0.6.2
[INFO] [stderr]   Downloaded rand v0.7.0
[INFO] [stderr]   Downloaded crossbeam-utils v0.6.5
[INFO] [stderr]   Downloaded futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]   Downloaded mio v0.6.16
[INFO] [stderr]   Downloaded env_logger v0.6.1
[INFO] [stderr]   Downloaded memchr v2.2.0
[INFO] [stderr]   Downloaded miow v0.2.1
[INFO] [stderr]   Downloaded net2 v0.2.33
[INFO] [stderr]   Downloaded lock_api v0.3.1
[INFO] [stderr]   Downloaded smallvec v0.6.9
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.5
[INFO] [stderr]   Downloaded rand_chacha v0.2.1
[INFO] [stderr]   Downloaded futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]   Downloaded log v0.4.6
[INFO] [stderr]   Downloaded mio-uds v0.6.7
[INFO] [stderr]   Downloaded redox_syscall v0.1.56
[INFO] [stderr]   Downloaded libc v0.2.62
[INFO] [stderr]   Downloaded iovec v0.1.2
[INFO] [stderr]   Downloaded c2-chacha v0.2.2
[INFO] [stderr]   Downloaded bitflags v1.0.4
[INFO] [stderr]   Downloaded lazy_static v1.2.0
[INFO] [stderr]   Downloaded futures-io-preview v0.3.0-alpha.18
[INFO] [stderr]   Downloaded futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]   Downloaded lazycell v1.2.1
[INFO] [stderr]   Downloaded scopeguard v1.0.0
[INFO] [stderr]   Downloaded cfg-if v0.1.6
[INFO] [stderr]   Downloaded winapi v0.3.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 572b501d269151a4a2905860bab47dfeea6abb1cf139ada91b3e690d51333ae0
[INFO] running `Command { std: "docker" "start" "-a" "572b501d269151a4a2905860bab47dfeea6abb1cf139ada91b3e690d51333ae0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "572b501d269151a4a2905860bab47dfeea6abb1cf139ada91b3e690d51333ae0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "572b501d269151a4a2905860bab47dfeea6abb1cf139ada91b3e690d51333ae0", kill_on_drop: false }`
[INFO] [stdout] 572b501d269151a4a2905860bab47dfeea6abb1cf139ada91b3e690d51333ae0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6d6a474bad91813b87565d6b8a6593adb6b063053ab4b262e002dba1089d61d
[INFO] running `Command { std: "docker" "start" "-a" "e6d6a474bad91813b87565d6b8a6593adb6b063053ab4b262e002dba1089d61d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling futures-io-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling scopeguard v1.0.0
[INFO] [stderr]    Compiling futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling smallvec v0.6.9
[INFO] [stderr]    Compiling futures-channel-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]    Compiling lock_api v0.3.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling async-ready v3.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling async-datagram v3.0.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling num_cpus v1.10.0
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling mio v0.6.16
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling futures-executor-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling futures-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling romio v0.3.0-alpha.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::raw::PollEvented`
[INFO] [stdout]  --> src/reactor/mod.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub use crate::raw::PollEvented;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/reactor/background.rs:142:18
[INFO] [stdout]     |
[INFO] [stdout] 142 |                 .compare_and_swap(curr, SHUTDOWN_NOW, SeqCst);
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/reactor/registration.rs:159:45
[INFO] [stdout]     |
[INFO] [stdout] 159 |                     let actual = self.state.compare_and_swap(INIT, LOCKED, SeqCst);
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/reactor/registration.rs:367:45
[INFO] [stdout]     |
[INFO] [stdout] 367 |                     let actual = self.state.compare_and_swap(state, next, SeqCst);
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/reactor/mod.rs:416:13
[INFO] [stdout]     |
[INFO] [stdout] 416 |             drop(handle.into_usize());
[INFO] [stdout]     |             ^^^^^-------------------^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  argument has type `usize`
[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] 416 -             drop(handle.into_usize());
[INFO] [stdout] 416 +             let _ = handle.into_usize();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.50s
[INFO] running `Command { std: "docker" "inspect" "e6d6a474bad91813b87565d6b8a6593adb6b063053ab4b262e002dba1089d61d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6d6a474bad91813b87565d6b8a6593adb6b063053ab4b262e002dba1089d61d", kill_on_drop: false }`
[INFO] [stdout] e6d6a474bad91813b87565d6b8a6593adb6b063053ab4b262e002dba1089d61d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c28fb40647efea0790375ce61e2171e4c91055f3874a542baf73a03b96338f5
[INFO] running `Command { std: "docker" "start" "-a" "3c28fb40647efea0790375ce61e2171e4c91055f3874a542baf73a03b96338f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]    Compiling env_logger v0.6.1
[INFO] [stdout] warning: unused import: `crate::raw::PollEvented`
[INFO] [stdout]  --> src/reactor/mod.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub use crate::raw::PollEvented;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/reactor/background.rs:142:18
[INFO] [stdout]     |
[INFO] [stdout] 142 |                 .compare_and_swap(curr, SHUTDOWN_NOW, SeqCst);
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/reactor/registration.rs:159:45
[INFO] [stdout]     |
[INFO] [stdout] 159 |                     let actual = self.state.compare_and_swap(INIT, LOCKED, SeqCst);
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/reactor/registration.rs:367:45
[INFO] [stdout]     |
[INFO] [stdout] 367 |                     let actual = self.state.compare_and_swap(state, next, SeqCst);
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/reactor/mod.rs:416:13
[INFO] [stdout]     |
[INFO] [stdout] 416 |             drop(handle.into_usize());
[INFO] [stdout]     |             ^^^^^-------------------^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  argument has type `usize`
[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] 416 -             drop(handle.into_usize());
[INFO] [stdout] 416 +             let _ = handle.into_usize();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling bytes v0.4.11
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling romio v0.3.0-alpha.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition name: `macos`
[INFO] [stdout]  --> tests/uds.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg(any(unix, macos))]
[INFO] [stdout]   |                  ^^^^^ help: found config with similar value: `target_os = "macos"`
[INFO] [stdout]   |
[INFO] [stdout]   = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]   = help: consider using a Cargo feature instead
[INFO] [stdout]   = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]            [lints.rust]
[INFO] [stdout]            unexpected_cfgs = { level = "warn", check-cfg = ['cfg(macos)'] }
[INFO] [stdout]   = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(macos)");` to the top of the `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]   = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused import: `crate::raw::PollEvented`
[INFO] [stdout]   --> src/reactor/mod.rs:8:9
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub use crate::raw::PollEvented;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:58:24
[INFO] [stdout]    |
[INFO] [stdout] 58 | #![cfg_attr(test, deny(warnings))]
[INFO] [stdout]    |                        ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/reactor/background.rs:142:18
[INFO] [stdout]     |
[INFO] [stdout] 142 |                 .compare_and_swap(curr, SHUTDOWN_NOW, SeqCst);
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(deprecated)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/reactor/registration.rs:159:45
[INFO] [stdout]     |
[INFO] [stdout] 159 |                     let actual = self.state.compare_and_swap(INIT, LOCKED, SeqCst);
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/reactor/registration.rs:367:45
[INFO] [stdout]     |
[INFO] [stdout] 367 |                     let actual = self.state.compare_and_swap(state, next, SeqCst);
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/reactor/mod.rs:416:13
[INFO] [stdout]     |
[INFO] [stdout] 416 |             drop(handle.into_usize());
[INFO] [stdout]     |             ^^^^^-------------------^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  argument has type `usize`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(dropping_copy_types)]` implied by `#[deny(warnings)]`
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 416 -             drop(handle.into_usize());
[INFO] [stdout] 416 +             let _ = handle.into_usize();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `romio` (lib test) due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3c28fb40647efea0790375ce61e2171e4c91055f3874a542baf73a03b96338f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c28fb40647efea0790375ce61e2171e4c91055f3874a542baf73a03b96338f5", kill_on_drop: false }`
[INFO] [stdout] 3c28fb40647efea0790375ce61e2171e4c91055f3874a542baf73a03b96338f5
