[INFO] fetching crate brioche-ducc-serde 0.1.2-brioche...
[INFO] checking brioche-ducc-serde-0.1.2-brioche against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate brioche-ducc-serde 0.1.2-brioche into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate brioche-ducc-serde 0.1.2-brioche on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate brioche-ducc-serde 0.1.2-brioche
[INFO] finished tweaking crates.io crate brioche-ducc-serde 0.1.2-brioche
[INFO] tweaked toml for crates.io crate brioche-ducc-serde 0.1.2-brioche written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "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-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8efc5eae31cd9bafcbed409cadd125c328df1b96ef94a00721215b941a90424d
[INFO] running `Command { std: "docker" "start" "-a" "8efc5eae31cd9bafcbed409cadd125c328df1b96ef94a00721215b941a90424d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8efc5eae31cd9bafcbed409cadd125c328df1b96ef94a00721215b941a90424d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8efc5eae31cd9bafcbed409cadd125c328df1b96ef94a00721215b941a90424d", kill_on_drop: false }`
[INFO] [stdout] 8efc5eae31cd9bafcbed409cadd125c328df1b96ef94a00721215b941a90424d
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 654d5c94d05ab90e9eca89e7059b283e706e26d2a3a55f28c039a7d6fd06c97b
[INFO] running `Command { std: "docker" "start" "-a" "654d5c94d05ab90e9eca89e7059b283e706e26d2a3a55f28c039a7d6fd06c97b", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking cesu8 v1.1.0
[INFO] [stderr]    Compiling brioche-ducc-sys v0.1.2-brioche
[INFO] [stderr]     Checking brioche-ducc v0.1.2-brioche
[INFO] [stderr]     Checking brioche-ducc-serde v0.1.2-brioche (/opt/rustwide/workdir)
[INFO] [stdout] error: this value of type `std::option::Option<std::result::Result<Value<'_>, ducc::Error>>` has significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/de.rs:117:15
[INFO] [stdout]     |
[INFO] [stdout] 113 |     fn next_element_seed<T>(&mut self, seed: T) -> Result<Option<T::Value>>
[INFO] [stdout]     |                                        ---- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 117 |         match self.0.next() {
[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: this value of type `std::option::Option<std::result::Result<Value<'_>, ducc::Error>>` has significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/de.rs:117:15
[INFO] [stdout]     |
[INFO] [stdout] 113 |     fn next_element_seed<T>(&mut self, seed: T) -> Result<Option<T::Value>>
[INFO] [stdout]     |                                        ---- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 117 |         match self.0.next() {
[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: this value of type `std::option::Option<Value<'_>>` has significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/de.rs:173:15
[INFO] [stdout]     |
[INFO] [stdout] 169 |     fn next_value_seed<T>(&mut self, seed: T) -> Result<T::Value>
[INFO] [stdout]     |                                      ---- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 173 |         match self.1.take() {
[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: this value of type `std::option::Option<Value<'_>>` has significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/de.rs:173:15
[INFO] [stdout]     |
[INFO] [stdout] 169 |     fn next_value_seed<T>(&mut self, seed: T) -> Result<T::Value>
[INFO] [stdout]     |                                      ---- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 173 |         match self.1.take() {
[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 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `brioche-ducc-serde` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `brioche-ducc-serde` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "654d5c94d05ab90e9eca89e7059b283e706e26d2a3a55f28c039a7d6fd06c97b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "654d5c94d05ab90e9eca89e7059b283e706e26d2a3a55f28c039a7d6fd06c97b", kill_on_drop: false }`
[INFO] [stdout] 654d5c94d05ab90e9eca89e7059b283e706e26d2a3a55f28c039a7d6fd06c97b