[INFO] fetching crate nbd-async 0.6.0... [INFO] checking nbd-async-0.6.0 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate nbd-async 0.6.0 into /workspace/builds/worker-1-tc2/source [INFO] validating manifest of crates.io crate nbd-async 0.6.0 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 nbd-async 0.6.0 [INFO] finished tweaking crates.io crate nbd-async 0.6.0 [INFO] tweaked toml for crates.io crate nbd-async 0.6.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] crate crates.io crate nbd-async 0.6.0 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 1803cf9caf64ce00af62634aecda55abbe7cac0fab024c2cf06c060b16ea19a6 [INFO] running `Command { std: "docker" "start" "-a" "1803cf9caf64ce00af62634aecda55abbe7cac0fab024c2cf06c060b16ea19a6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1803cf9caf64ce00af62634aecda55abbe7cac0fab024c2cf06c060b16ea19a6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1803cf9caf64ce00af62634aecda55abbe7cac0fab024c2cf06c060b16ea19a6", kill_on_drop: false }` [INFO] [stdout] 1803cf9caf64ce00af62634aecda55abbe7cac0fab024c2cf06c060b16ea19a6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] a3b26283dd92b0bc3fca6fe73779c4da6858e29075d6db1476ce6f829dbcde0b [INFO] running `Command { std: "docker" "start" "-a" "a3b26283dd92b0bc3fca6fe73779c4da6858e29075d6db1476ce6f829dbcde0b", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.39 [INFO] [stderr] Compiling libc v0.2.126 [INFO] [stderr] Compiling unicode-ident v1.0.1 [INFO] [stderr] Compiling syn v1.0.96 [INFO] [stderr] Compiling log v0.4.17 [INFO] [stderr] Compiling memchr v2.5.0 [INFO] [stderr] Compiling futures-task v0.3.21 [INFO] [stderr] Compiling futures-core v0.3.21 [INFO] [stderr] Compiling async-trait v0.1.56 [INFO] [stderr] Checking pin-project-lite v0.2.9 [INFO] [stderr] Compiling futures-util v0.3.21 [INFO] [stderr] Checking once_cell v1.12.0 [INFO] [stderr] Compiling quote v1.0.18 [INFO] [stderr] Checking socket2 v0.4.4 [INFO] [stderr] Checking mio v0.8.3 [INFO] [stderr] Checking num_cpus v1.13.1 [INFO] [stderr] Checking nix v0.24.1 [INFO] [stderr] Compiling tokio-macros v1.8.0 [INFO] [stderr] Checking tokio v1.19.2 [INFO] [stderr] Checking nbd-async v0.6.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: fields `fua` and `no_hole` are never read [INFO] [stdout] --> src/nbd.rs:24:9 [INFO] [stdout] | [INFO] [stdout] 22 | pub struct RequestFlags { [INFO] [stdout] | ------------ fields in this struct [INFO] [stdout] 23 | /// Force Unit Access flag. [INFO] [stdout] 24 | pub fua: bool, [INFO] [stdout] | ^^^ [INFO] [stdout] 25 | /// No Hole flag. [INFO] [stdout] 26 | pub no_hole: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `RequestFlags` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `fua` and `no_hole` are never read [INFO] [stdout] --> src/nbd.rs:24:9 [INFO] [stdout] | [INFO] [stdout] 22 | pub struct RequestFlags { [INFO] [stdout] | ------------ fields in this struct [INFO] [stdout] 23 | /// Force Unit Access flag. [INFO] [stdout] 24 | pub fua: bool, [INFO] [stdout] | ^^^ [INFO] [stdout] 25 | /// No Hole flag. [INFO] [stdout] 26 | pub no_hole: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `RequestFlags` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `magic` and `flags` are never read [INFO] [stdout] --> src/nbd.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 30 | pub struct Request { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 31 | pub magic: u32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 32 | pub command: Command, [INFO] [stdout] 33 | pub flags: RequestFlags, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Request` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [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/device.rs:200:21 [INFO] [stdout] | [INFO] [stdout] 185 | let rc = Pin::new(client).poll_read(cx, &mut read_buf); [INFO] [stdout] | -- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 200 | Poll::Ready(Some(match nbd::Request::try_from_bytes(&self.read_buf) { [INFO] [stdout] | _____________________^ [INFO] [stdout] 201 | | Ok(req) => Ok(req), [INFO] [stdout] 202 | | Err(err) => Err(err), [INFO] [stdout] 203 | | })) [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: fields `magic` and `flags` are never read [INFO] [stdout] --> src/nbd.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 30 | pub struct Request { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 31 | pub magic: u32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 32 | pub command: Command, [INFO] [stdout] 33 | pub flags: RequestFlags, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Request` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [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/device.rs:200:21 [INFO] [stdout] | [INFO] [stdout] 185 | let rc = Pin::new(client).poll_read(cx, &mut read_buf); [INFO] [stdout] | -- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 200 | Poll::Ready(Some(match nbd::Request::try_from_bytes(&self.read_buf) { [INFO] [stdout] | _____________________^ [INFO] [stdout] 201 | | Ok(req) => Ok(req), [INFO] [stdout] 202 | | Err(err) => Err(err), [INFO] [stdout] 203 | | })) [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: aborting due to 1 previous error; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `nbd-async` (lib) due to 2 previous errors; 2 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `nbd-async` (lib test) due to 2 previous errors; 2 warnings emitted [INFO] running `Command { std: "docker" "inspect" "a3b26283dd92b0bc3fca6fe73779c4da6858e29075d6db1476ce6f829dbcde0b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a3b26283dd92b0bc3fca6fe73779c4da6858e29075d6db1476ce6f829dbcde0b", kill_on_drop: false }` [INFO] [stdout] a3b26283dd92b0bc3fca6fe73779c4da6858e29075d6db1476ce6f829dbcde0b