[INFO] fetching crate mqtt-protocol 0.12.0... [INFO] checking mqtt-protocol-0.12.0 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate mqtt-protocol 0.12.0 into /workspace/builds/worker-0-tc2/source [INFO] validating manifest of crates.io crate mqtt-protocol 0.12.0 on toolchain 4d98531622e1718ae0bc3c7a1ab9cd8938428452 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate mqtt-protocol 0.12.0 [INFO] removed 0 missing examples [INFO] finished tweaking crates.io crate mqtt-protocol 0.12.0 [INFO] tweaked toml for crates.io crate mqtt-protocol 0.12.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] crate crates.io crate mqtt-protocol 0.12.0 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" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9e91a7f0d70cd4f68ecabad67b917cf8f4f1e8859727729882dc6147fbb5af86 [INFO] running `Command { std: "docker" "start" "-a" "9e91a7f0d70cd4f68ecabad67b917cf8f4f1e8859727729882dc6147fbb5af86", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9e91a7f0d70cd4f68ecabad67b917cf8f4f1e8859727729882dc6147fbb5af86", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9e91a7f0d70cd4f68ecabad67b917cf8f4f1e8859727729882dc6147fbb5af86", kill_on_drop: false }` [INFO] [stdout] 9e91a7f0d70cd4f68ecabad67b917cf8f4f1e8859727729882dc6147fbb5af86 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 59ad1f0a002c26ef9484c700cffa6281d3e7e3b191e950178af9d77ad570f11a [INFO] running `Command { std: "docker" "start" "-a" "59ad1f0a002c26ef9484c700cffa6281d3e7e3b191e950178af9d77ad570f11a", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling syn v1.0.66 [INFO] [stderr] Compiling libc v0.2.91 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling proc-macro-hack v0.5.19 [INFO] [stderr] Compiling proc-macro-nested v0.1.7 [INFO] [stderr] Checking futures-core v0.3.13 [INFO] [stderr] Checking futures-sink v0.3.13 [INFO] [stderr] Checking pin-project-lite v0.2.6 [INFO] [stderr] Checking futures-channel v0.3.13 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling getrandom v0.2.2 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking futures-task v0.3.13 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Checking futures-io v0.3.13 [INFO] [stderr] Checking aho-corasick v0.7.15 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Checking regex-syntax v0.6.23 [INFO] [stderr] Checking vec_map v0.8.2 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Compiling tokio v1.4.0 [INFO] [stderr] Checking bytes v1.0.1 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking byteorder v1.4.3 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking mio v0.7.11 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking termcolor v1.1.2 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking uuid v0.8.2 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking regex v1.4.5 [INFO] [stderr] Checking env_logger v0.8.3 [INFO] [stderr] Compiling futures-macro v0.3.13 [INFO] [stderr] Compiling thiserror-impl v1.0.24 [INFO] [stderr] Compiling tokio-macros v1.1.0 [INFO] [stderr] Checking futures-util v0.3.13 [INFO] [stderr] Checking thiserror v1.0.24 [INFO] [stderr] Checking mqtt-protocol v0.12.0 (/opt/rustwide/workdir) [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/control/variable_header/protocol_level.rs:42:35 [INFO] [stdout] | [INFO] [stdout] 42 | .and_then(|x| x.ok_or(VariableHeaderError::InvalidProtocolVersion)) [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: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/packet/connect.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 29 | pub fn new(client_identifier: C) -> ConnectPacket [INFO] [stdout] | -------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 33 | ConnectPacket::with_level("MQTT", client_identifier, SPEC_3_1_1).expect("SPEC_3_1_1 should always be valid") [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 `mqtt-protocol` (lib) due to 3 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "59ad1f0a002c26ef9484c700cffa6281d3e7e3b191e950178af9d77ad570f11a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "59ad1f0a002c26ef9484c700cffa6281d3e7e3b191e950178af9d77ad570f11a", kill_on_drop: false }` [INFO] [stdout] 59ad1f0a002c26ef9484c700cffa6281d3e7e3b191e950178af9d77ad570f11a