[INFO] fetching crate transducers 0.0.2...
[INFO] checking transducers-0.0.2 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604
[INFO] extracting crate transducers 0.0.2 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate transducers 0.0.2 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 transducers 0.0.2
[INFO] finished tweaking crates.io crate transducers 0.0.2
[INFO] tweaked toml for crates.io crate transducers 0.0.2 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] [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-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] 8dee4281eb0698d7f733c351c68c340f7e4e333d56d2462533112ecd4d059ad5
[INFO] running `Command { std: "docker" "start" "-a" "8dee4281eb0698d7f733c351c68c340f7e4e333d56d2462533112ecd4d059ad5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8dee4281eb0698d7f733c351c68c340f7e4e333d56d2462533112ecd4d059ad5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dee4281eb0698d7f733c351c68c340f7e4e333d56d2462533112ecd4d059ad5", kill_on_drop: false }`
[INFO] [stdout] 8dee4281eb0698d7f733c351c68c340f7e4e333d56d2462533112ecd4d059ad5
[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] 07c8640c515ec9209afd8fc046135666ca5a017daa6b8ed4a9f70064049bcfe3
[INFO] running `Command { std: "docker" "start" "-a" "07c8640c515ec9209afd8fc046135666ca5a017daa6b8ed4a9f70064049bcfe3", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking transducers v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/transform.rs:22:15
[INFO] [stdout]    |
[INFO] [stdout] 22 |     step: Box<Fn(R, T) -> R + 't>
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 |     step: Box<dyn Fn(R, T) -> R + 't>
[INFO] [stdout]    |               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/transform.rs:63:15
[INFO] [stdout]    |
[INFO] [stdout] 63 |     step: Box<Fn(R, T) -> R + 't>,
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 63 |     step: Box<dyn Fn(R, T) -> R + 't>,
[INFO] [stdout]    |               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform.rs:116:15
[INFO] [stdout]     |
[INFO] [stdout] 116 |     step: Box<Fn(R, T) -> R + 't>,
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 116 |     step: Box<dyn Fn(R, T) -> R + 't>,
[INFO] [stdout]     |               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/transform.rs:22:15
[INFO] [stdout]    |
[INFO] [stdout] 22 |     step: Box<Fn(R, T) -> R + 't>
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 |     step: Box<dyn Fn(R, T) -> R + 't>
[INFO] [stdout]    |               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/transform.rs:63:15
[INFO] [stdout]    |
[INFO] [stdout] 63 |     step: Box<Fn(R, T) -> R + 't>,
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 63 |     step: Box<dyn Fn(R, T) -> R + 't>,
[INFO] [stdout]    |               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform.rs:116:15
[INFO] [stdout]     |
[INFO] [stdout] 116 |     step: Box<Fn(R, T) -> R + 't>,
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 116 |     step: Box<dyn Fn(R, T) -> R + 't>,
[INFO] [stdout]     |               +++
[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/compose.rs:117:22
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn apply<Step: Fn(R, T) -> R + 't>(&self, step: Step) -> FStep {
[INFO] [stdout]     |                                               ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 117 |         self.f.apply(self.g.apply(step))
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/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/transform.rs:51:30
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn apply<Step: Fn(R, T) -> R + 't>(&self, step: Step) -> IdentityStep<'t, R, T> {
[INFO] [stdout]    |                                               ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 51 |         IdentityStep { step: Box::new(step) }
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[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/transform.rs:85:25
[INFO] [stdout]    |
[INFO] [stdout] 84 |     extern "rust-call" fn call(&self, (r, u): (R, U)) -> R {
[INFO] [stdout]    |                                       -------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 85 |         (*self.step)(r, (self.f)(u))
[INFO] [stdout]    |                         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[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/transform.rs:102:18
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn apply<Step: Fn(R, T) -> R + 't>(&self, step: Step) -> MappingStep<'t, R, T, F> {
[INFO] [stdout]     |                                               ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 101 |        MappingStep {
[INFO] [stdout] 102 |            step: Box::new(step),
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[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/transform.rs:159:19
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn apply<Step: Fn(R, T) -> R + 'p>(&self, step: Step) -> FilteringStep<'p, R, T, P> {
[INFO] [stdout]     |                                               ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 158 |         FilteringStep {
[INFO] [stdout] 159 |             step: Box::new(step),
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `transducers` (lib) due to 6 previous errors; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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/compose.rs:117:22
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn apply<Step: Fn(R, T) -> R + 't>(&self, step: Step) -> FStep {
[INFO] [stdout]     |                                               ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 117 |         self.f.apply(self.g.apply(step))
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/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/transform.rs:51:30
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn apply<Step: Fn(R, T) -> R + 't>(&self, step: Step) -> IdentityStep<'t, R, T> {
[INFO] [stdout]    |                                               ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 51 |         IdentityStep { step: Box::new(step) }
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[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/transform.rs:85:25
[INFO] [stdout]    |
[INFO] [stdout] 84 |     extern "rust-call" fn call(&self, (r, u): (R, U)) -> R {
[INFO] [stdout]    |                                       -------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 85 |         (*self.step)(r, (self.f)(u))
[INFO] [stdout]    |                         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[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/transform.rs:102:18
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn apply<Step: Fn(R, T) -> R + 't>(&self, step: Step) -> MappingStep<'t, R, T, F> {
[INFO] [stdout]     |                                               ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 101 |        MappingStep {
[INFO] [stdout] 102 |            step: Box::new(step),
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[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/transform.rs:159:19
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn apply<Step: Fn(R, T) -> R + 'p>(&self, step: Step) -> FilteringStep<'p, R, T, P> {
[INFO] [stdout]     |                                               ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 158 |         FilteringStep {
[INFO] [stdout] 159 |             step: Box::new(step),
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `transducers` (lib test) due to 6 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "07c8640c515ec9209afd8fc046135666ca5a017daa6b8ed4a9f70064049bcfe3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07c8640c515ec9209afd8fc046135666ca5a017daa6b8ed4a9f70064049bcfe3", kill_on_drop: false }`
[INFO] [stdout] 07c8640c515ec9209afd8fc046135666ca5a017daa6b8ed4a9f70064049bcfe3