[INFO] fetching crate tokio-i2c 0.1.0... [INFO] checking tokio-i2c-0.1.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930 [INFO] extracting crate tokio-i2c 0.1.0 into /workspace/builds/worker-2-tc2/source [INFO] validating manifest of crates.io crate tokio-i2c 0.1.0 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate tokio-i2c 0.1.0 [INFO] finished tweaking crates.io crate tokio-i2c 0.1.0 [INFO] tweaked toml for crates.io crate tokio-i2c 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 57 packages to latest compatible versions [INFO] [stderr] Adding bitflags v1.3.2 (available: v2.6.0) [INFO] [stderr] Adding bytes v0.4.12 (available: v1.7.2) [INFO] [stderr] Adding cfg-if v0.1.10 (available: v1.0.0) [INFO] [stderr] Adding cloudabi v0.0.3 (available: v0.1.0) [INFO] [stderr] Adding crossbeam-deque v0.7.4 (available: v0.8.5) [INFO] [stderr] Adding crossbeam-epoch v0.8.2 (available: v0.9.18) [INFO] [stderr] Adding crossbeam-queue v0.2.3 (available: v0.3.11) [INFO] [stderr] Adding crossbeam-utils v0.7.2 (available: v0.8.20) [INFO] [stderr] Adding futures v0.1.31 (available: v0.3.30) [INFO] [stderr] Adding hermit-abi v0.3.9 (available: v0.4.0) [INFO] [stderr] Adding lock_api v0.3.4 (available: v0.4.12) [INFO] [stderr] Adding memoffset v0.5.6 (available: v0.9.1) [INFO] [stderr] Adding mio v0.6.23 (available: v1.0.2) [INFO] [stderr] Adding miow v0.2.2 (available: v0.6.0) [INFO] [stderr] Adding parking_lot v0.9.0 (available: v0.12.3) [INFO] [stderr] Adding parking_lot_core v0.6.3 (available: v0.9.10) [INFO] [stderr] Adding redox_syscall v0.1.57 (available: v0.5.6) [INFO] [stderr] Adding rustc_version v0.2.3 (available: v0.4.1) [INFO] [stderr] Adding semver v0.9.0 (available: v1.0.23) [INFO] [stderr] Adding semver-parser v0.7.0 (available: v0.10.2) [INFO] [stderr] Adding smallvec v0.6.14 (available: v1.13.2) [INFO] [stderr] Adding tokio v0.1.22 (available: v1.40.0) [INFO] [stderr] Adding winapi v0.2.8 (available: v0.3.9) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 565ecfe8c620e2f23bc5577627633438c7e09bc8dcce7bca2bde3603f7617bf8 [INFO] running `Command { std: "docker" "start" "-a" "565ecfe8c620e2f23bc5577627633438c7e09bc8dcce7bca2bde3603f7617bf8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "565ecfe8c620e2f23bc5577627633438c7e09bc8dcce7bca2bde3603f7617bf8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "565ecfe8c620e2f23bc5577627633438c7e09bc8dcce7bca2bde3603f7617bf8", kill_on_drop: false }` [INFO] [stdout] 565ecfe8c620e2f23bc5577627633438c7e09bc8dcce7bca2bde3603f7617bf8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 70334ae9748ccc218a41aa99efe40a5fa9996fc2b5841f46d4b927a1e4770c11 [INFO] running `Command { std: "docker" "start" "-a" "70334ae9748ccc218a41aa99efe40a5fa9996fc2b5841f46d4b927a1e4770c11", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Checking futures v0.1.31 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Compiling memoffset v0.5.6 [INFO] [stderr] Checking net2 v0.2.39 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking lock_api v0.3.4 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Checking smallvec v0.6.14 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking i2c-linux-sys v0.2.1 [INFO] [stderr] Checking mio v0.6.23 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling parking_lot_core v0.6.3 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Checking crossbeam-queue v0.2.3 [INFO] [stderr] Checking mio-uds v0.6.8 [INFO] [stderr] Checking crossbeam-deque v0.7.4 [INFO] [stderr] Checking tokio-executor v0.1.10 [INFO] [stderr] Checking tokio-io v0.1.13 [INFO] [stderr] Checking tokio-sync v0.1.8 [INFO] [stderr] Checking tokio-threadpool v0.1.18 [INFO] [stderr] Checking tokio-timer v0.2.13 [INFO] [stderr] Checking tokio-current-thread v0.1.7 [INFO] [stderr] Checking tokio-codec v0.1.2 [INFO] [stderr] Checking tokio-reactor v0.1.12 [INFO] [stderr] Checking tokio-uds v0.2.7 [INFO] [stderr] Checking tokio-udp v0.1.6 [INFO] [stderr] Checking tokio-tcp v0.1.4 [INFO] [stderr] Checking tokio-fs v0.1.7 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking tokio-i2c v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead [INFO] [stdout] --> src/lib.rs:23:15 [INFO] [stdout] | [INFO] [stdout] 23 | use std::mem::uninitialized; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead [INFO] [stdout] --> src/lib.rs:570:5 [INFO] [stdout] | [INFO] [stdout] 570 | { uninitialized::<[i2c_msg; I2C_RDWR_IOCTL_MAX_MSGS]>() }; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead [INFO] [stdout] --> src/lib.rs:23:15 [INFO] [stdout] | [INFO] [stdout] 23 | use std::mem::uninitialized; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead [INFO] [stdout] --> src/lib.rs:570:5 [INFO] [stdout] | [INFO] [stdout] 570 | { uninitialized::<[i2c_msg; I2C_RDWR_IOCTL_MAX_MSGS]>() }; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this value of type `Async>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:317:26 [INFO] [stdout] | [INFO] [stdout] 316 | let path = self.path.take().expect(ERR_RESOLVED); [INFO] [stdout] | ---- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 317 | if let Ready(master) = blocking_io(|| { [INFO] [stdout] | ________________________________^ [INFO] [stdout] 318 | | let bus = OpenOptions::new().read(true).write(true).open(&path)?; [INFO] [stdout] 319 | | let bits = i2c_get_functionality(bus.as_raw_fd())?.bits(); [INFO] [stdout] 320 | | Ok(Master { bus, address: None, [INFO] [stdout] 321 | | functionality: Functionality::from_bits_truncate(bits) }) [INFO] [stdout] 322 | | })? { [INFO] [stdout] | |___________^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the type `[i2c_linux_sys::i2c_msg; 42]` does not permit being left uninitialized [INFO] [stdout] --> src/lib.rs:570:5 [INFO] [stdout] | [INFO] [stdout] 570 | { uninitialized::<[i2c_msg; I2C_RDWR_IOCTL_MAX_MSGS]>() }; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | this code causes undefined behavior when executed [INFO] [stdout] | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done [INFO] [stdout] | [INFO] [stdout] = note: integers must be initialized [INFO] [stdout] = note: `#[warn(invalid_value)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `tokio-i2c` (lib) due to 2 previous errors; 3 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: this value of type `Async>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:317:26 [INFO] [stdout] | [INFO] [stdout] 316 | let path = self.path.take().expect(ERR_RESOLVED); [INFO] [stdout] | ---- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 317 | if let Ready(master) = blocking_io(|| { [INFO] [stdout] | ________________________________^ [INFO] [stdout] 318 | | let bus = OpenOptions::new().read(true).write(true).open(&path)?; [INFO] [stdout] 319 | | let bits = i2c_get_functionality(bus.as_raw_fd())?.bits(); [INFO] [stdout] 320 | | Ok(Master { bus, address: None, [INFO] [stdout] 321 | | functionality: Functionality::from_bits_truncate(bits) }) [INFO] [stdout] 322 | | })? { [INFO] [stdout] | |___________^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the type `[i2c_linux_sys::i2c_msg; 42]` does not permit being left uninitialized [INFO] [stdout] --> src/lib.rs:570:5 [INFO] [stdout] | [INFO] [stdout] 570 | { uninitialized::<[i2c_msg; I2C_RDWR_IOCTL_MAX_MSGS]>() }; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | this code causes undefined behavior when executed [INFO] [stdout] | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done [INFO] [stdout] | [INFO] [stdout] = note: integers must be initialized [INFO] [stdout] = note: `#[warn(invalid_value)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `tokio-i2c` (lib test) due to 2 previous errors; 3 warnings emitted [INFO] running `Command { std: "docker" "inspect" "70334ae9748ccc218a41aa99efe40a5fa9996fc2b5841f46d4b927a1e4770c11", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "70334ae9748ccc218a41aa99efe40a5fa9996fc2b5841f46d4b927a1e4770c11", kill_on_drop: false }` [INFO] [stdout] 70334ae9748ccc218a41aa99efe40a5fa9996fc2b5841f46d4b927a1e4770c11