[INFO] fetching crate treena 0.0.5... [INFO] checking treena-0.0.5 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate treena 0.0.5 into /workspace/builds/worker-4-tc2/source [INFO] validating manifest of crates.io crate treena 0.0.5 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 treena 0.0.5 [INFO] finished tweaking crates.io crate treena 0.0.5 [INFO] tweaked toml for crates.io crate treena 0.0.5 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a3eefdaf968c0212029d0cc091ecd342ded5c9331a7ac818f7e25061057ca08a [INFO] running `Command { std: "docker" "start" "-a" "a3eefdaf968c0212029d0cc091ecd342ded5c9331a7ac818f7e25061057ca08a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a3eefdaf968c0212029d0cc091ecd342ded5c9331a7ac818f7e25061057ca08a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a3eefdaf968c0212029d0cc091ecd342ded5c9331a7ac818f7e25061057ca08a", kill_on_drop: false }` [INFO] [stdout] a3eefdaf968c0212029d0cc091ecd342ded5c9331a7ac818f7e25061057ca08a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] ccf111972cc723b7257e1bc4365f9c3e0f56d30e40c2577e4845cd1504cf3af5 [INFO] running `Command { std: "docker" "start" "-a" "ccf111972cc723b7257e1bc4365f9c3e0f56d30e40c2577e4845cd1504cf3af5", kill_on_drop: false }` [INFO] [stderr] Checking treena v0.0.5 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/dynamic/hierarchy.rs:237:13 [INFO] [stdout] | [INFO] [stdout] 237 | let mut nbs = self [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/dynamic/hierarchy.rs:324:13 [INFO] [stdout] | [INFO] [stdout] 324 | let mut nbs = self [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/dynamic/hierarchy.rs:237:13 [INFO] [stdout] | [INFO] [stdout] 237 | let mut nbs = self [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/dynamic/hierarchy.rs:324:13 [INFO] [stdout] | [INFO] [stdout] 324 | let mut nbs = self [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [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] --> tests/forest-iterators.rs:90:5 [INFO] [stdout] | [INFO] [stdout] 86 | fn to_content_and_depth<'f, I>(iter: I) -> Vec<(DftEvent<&'static str>, usize)> [INFO] [stdout] | ------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 90 | / iter.map(|ev| ev.map(|node| *node.data())) [INFO] [stdout] 91 | | .scan(0, |depth, ev| { [INFO] [stdout] 92 | | let ret_depth = match ev { [INFO] [stdout] 93 | | DftEvent::Open(_) => mem::replace(depth, *depth + 1), [INFO] [stdout] ... | [INFO] [stdout] 99 | | Some((ev, ret_depth)) [INFO] [stdout] 100 | | }) [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 [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `treena` (test "forest-iterators") due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "ccf111972cc723b7257e1bc4365f9c3e0f56d30e40c2577e4845cd1504cf3af5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ccf111972cc723b7257e1bc4365f9c3e0f56d30e40c2577e4845cd1504cf3af5", kill_on_drop: false }` [INFO] [stdout] ccf111972cc723b7257e1bc4365f9c3e0f56d30e40c2577e4845cd1504cf3af5