[INFO] fetching crate tokio-modbus 0.14.0... [INFO] checking tokio-modbus-0.14.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930 [INFO] extracting crate tokio-modbus 0.14.0 into /workspace/builds/worker-6-tc2/source [INFO] validating manifest of crates.io crate tokio-modbus 0.14.0 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-modbus 0.14.0 [INFO] removed 11 missing examples [INFO] finished tweaking crates.io crate tokio-modbus 0.14.0 [INFO] tweaked toml for crates.io crate tokio-modbus 0.14.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate crates.io crate tokio-modbus 0.14.0 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 057579e75fd4a4e3d97d6a7bb54516dde8ecbf9f8b05d3808c03d71c36b5d538 [INFO] running `Command { std: "docker" "start" "-a" "057579e75fd4a4e3d97d6a7bb54516dde8ecbf9f8b05d3808c03d71c36b5d538", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "057579e75fd4a4e3d97d6a7bb54516dde8ecbf9f8b05d3808c03d71c36b5d538", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "057579e75fd4a4e3d97d6a7bb54516dde8ecbf9f8b05d3808c03d71c36b5d538", kill_on_drop: false }` [INFO] [stdout] 057579e75fd4a4e3d97d6a7bb54516dde8ecbf9f8b05d3808c03d71c36b5d538 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 10eec66f0ec503b241e0c0d1026f5caa6f0824e90e766fcf7c9fc6ba83177a22 [INFO] running `Command { std: "docker" "start" "-a" "10eec66f0ec503b241e0c0d1026f5caa6f0824e90e766fcf7c9fc6ba83177a22", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.155 [INFO] [stderr] Compiling autocfg v1.3.0 [INFO] [stderr] Checking subtle v2.6.1 [INFO] [stderr] Compiling generic-array v0.14.7 [INFO] [stderr] Compiling proc-macro2 v1.0.86 [INFO] [stderr] Compiling cc v1.1.6 [INFO] [stderr] Compiling thiserror v1.0.63 [INFO] [stderr] Checking futures-channel v0.3.30 [INFO] [stderr] Checking untrusted v0.9.0 [INFO] [stderr] Checking cpufeatures v0.2.12 [INFO] [stderr] Checking spin v0.9.8 [INFO] [stderr] Checking rustls-pki-types v1.7.0 [INFO] [stderr] Checking der v0.7.9 [INFO] [stderr] Compiling rustls v0.22.4 [INFO] [stderr] Compiling slab v0.4.9 [INFO] [stderr] Compiling memoffset v0.7.1 [INFO] [stderr] Checking scopeguard v1.2.0 [INFO] [stderr] Checking bytes v1.6.1 [INFO] [stderr] Checking base64 v0.22.1 [INFO] [stderr] Compiling quote v1.0.36 [INFO] [stderr] Compiling anyhow v1.0.86 [INFO] [stderr] Checking regex v1.10.5 [INFO] [stderr] Compiling syn v2.0.71 [INFO] [stderr] Checking crypto-common v0.1.6 [INFO] [stderr] Checking block-padding v0.3.3 [INFO] [stderr] Checking block-buffer v0.10.4 [INFO] [stderr] Compiling ring v0.17.8 [INFO] [stderr] Checking inout v0.1.3 [INFO] [stderr] Checking digest v0.10.7 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking cipher v0.4.4 [INFO] [stderr] Checking hmac v0.12.1 [INFO] [stderr] Checking sha2 v0.10.8 [INFO] [stderr] Checking pbkdf2 v0.12.2 [INFO] [stderr] Checking spki v0.7.3 [INFO] [stderr] Checking pem v3.0.4 [INFO] [stderr] Checking salsa20 v0.10.2 [INFO] [stderr] Checking cbc v0.1.2 [INFO] [stderr] Checking aes v0.8.4 [INFO] [stderr] Checking rustls-pemfile v2.1.2 [INFO] [stderr] Checking mio v0.8.11 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking getrandom v0.2.15 [INFO] [stderr] Checking socket2 v0.5.7 [INFO] [stderr] Checking nix v0.26.4 [INFO] [stderr] Checking scrypt v0.11.0 [INFO] [stderr] Checking is-terminal v0.4.12 [INFO] [stderr] Checking env_logger v0.10.2 [INFO] [stderr] Checking pkcs5 v0.7.1 [INFO] [stderr] Checking pkcs8 v0.10.2 [INFO] [stderr] Compiling thiserror-impl v1.0.63 [INFO] [stderr] Compiling tokio-macros v2.3.0 [INFO] [stderr] Compiling futures-macro v0.3.30 [INFO] [stderr] Compiling async-trait v0.1.81 [INFO] [stderr] Checking tokio v1.38.1 [INFO] [stderr] Checking futures-util v0.3.30 [INFO] [stderr] Checking unescaper v0.1.5 [INFO] [stderr] Checking serialport v4.4.0 [INFO] [stderr] Checking rustls-webpki v0.102.5 [INFO] [stderr] Checking webpki v0.22.4 [INFO] [stderr] Checking mio-serial v5.0.5 [INFO] [stderr] Checking tokio-util v0.7.11 [INFO] [stderr] Checking futures-executor v0.3.30 [INFO] [stderr] Checking tokio-modbus v0.14.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking futures v0.3.30 [INFO] [stderr] Checking tokio-serial v5.4.4 [INFO] [stdout] warning: struct `RequestDecoder` is never constructed [INFO] [stdout] --> src/codec/rtu.rs:107:19 [INFO] [stdout] | [INFO] [stdout] 107 | pub(crate) struct RequestDecoder { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `RequestDecoder` has a derived impl for the trait `Default`, but this is intentionally ignored during dead code analysis [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/lib.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | #![warn(unused)] [INFO] [stdout] | ^^^^^^ [INFO] [stdout] = note: `#[warn(dead_code)]` implied by `#[warn(unused)]` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `ServerCodec` is never constructed [INFO] [stdout] --> src/codec/rtu.rs:122:19 [INFO] [stdout] | [INFO] [stdout] 122 | pub(crate) struct ServerCodec { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `ServerCodec` has a derived impl for the trait `Default`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `get_request_pdu_len` is never used [INFO] [stdout] --> src/codec/rtu.rs:126:4 [INFO] [stdout] | [INFO] [stdout] 126 | fn get_request_pdu_len(adu_buf: &BytesMut) -> Result> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking tokio-rustls v0.25.0 [INFO] [stdout] error: this value of type `std::result::Result` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/codec/rtu.rs:663:63 [INFO] [stdout] | [INFO] [stdout] 645 | let mut codec = ClientCodec::default(); [INFO] [stdout] | --------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 646 | let mut buf = BytesMut::from( [INFO] [stdout] | ------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 663 | if let Ok(Response::ReadHoldingRegisters(data)) = pdu.into() { [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] error: this value of type `std::result::Result` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/codec/rtu.rs:694:63 [INFO] [stdout] | [INFO] [stdout] 674 | let mut codec = ClientCodec::default(); [INFO] [stdout] | --------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 675 | let mut buf = BytesMut::from( [INFO] [stdout] | ------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 694 | if let Ok(Response::ReadHoldingRegisters(data)) = pdu.into() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `tokio-modbus` (lib test) due to 3 previous errors [INFO] running `Command { std: "docker" "inspect" "10eec66f0ec503b241e0c0d1026f5caa6f0824e90e766fcf7c9fc6ba83177a22", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "10eec66f0ec503b241e0c0d1026f5caa6f0824e90e766fcf7c9fc6ba83177a22", kill_on_drop: false }` [INFO] [stdout] 10eec66f0ec503b241e0c0d1026f5caa6f0824e90e766fcf7c9fc6ba83177a22