[INFO] fetching crate diskmap 0.2.0...
[INFO] checking diskmap-0.2.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate diskmap 0.2.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate diskmap 0.2.0 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 diskmap 0.2.0
[INFO] finished tweaking crates.io crate diskmap 0.2.0
[INFO] tweaked toml for crates.io crate diskmap 0.2.0 written to /workspace/builds/worker-6-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 13 packages to latest compatible versions
[INFO] [stderr]       Adding half v1.8.3 (available: v2.4.1)
[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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 54bd494080b3e4790075d775072af2acc8916d42ff933f123e3533d00723cc1f
[INFO] running `Command { std: "docker" "start" "-a" "54bd494080b3e4790075d775072af2acc8916d42ff933f123e3533d00723cc1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54bd494080b3e4790075d775072af2acc8916d42ff933f123e3533d00723cc1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54bd494080b3e4790075d775072af2acc8916d42ff933f123e3533d00723cc1f", kill_on_drop: false }`
[INFO] [stdout] 54bd494080b3e4790075d775072af2acc8916d42ff933f123e3533d00723cc1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 85b56be72f74d73309ed6eb0f3348806f0751358e51c32afb6f75c69f24fb407
[INFO] running `Command { std: "docker" "start" "-a" "85b56be72f74d73309ed6eb0f3348806f0751358e51c32afb6f75c69f24fb407", kill_on_drop: false }`
[INFO] [stderr]     Checking half v1.8.3
[INFO] [stderr]     Checking advisory-lock v0.3.0
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking diskmap v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this value of type `Result<File, std::io::Error>` has significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/lib.rs:109:15
[INFO] [stdout]     |
[INFO] [stdout] 104 |     pub fn alter(&self, key: &K, mut alter_function: impl FnMut(V) -> V) -> Result<(), Error> {
[INFO] [stdout]     |                                  ------------------ these local bindings with significant drop implementation may observe changes in drop order under Edition 2024
[INFO] [stdout] 105 |         let v = self.get(&key)?;
[INFO] [stdout]     |             - these local bindings with significant drop implementation may observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 109 |         match File::open(&fname) {
[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 `Result<File, std::io::Error>` has significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/lib.rs:140:15
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn overwrite_existing(&self, key: &K, value: V) -> Result<(), Error> {
[INFO] [stdout]     |                                               ----- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 140 |         match File::open(&fname) {
[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: this value of type `Result<File, std::io::Error>` has significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/lib.rs:109:15
[INFO] [stdout]     |
[INFO] [stdout] 104 |     pub fn alter(&self, key: &K, mut alter_function: impl FnMut(V) -> V) -> Result<(), Error> {
[INFO] [stdout]     |                                  ------------------ these local bindings with significant drop implementation may observe changes in drop order under Edition 2024
[INFO] [stdout] 105 |         let v = self.get(&key)?;
[INFO] [stdout]     |             - these local bindings with significant drop implementation may observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 109 |         match File::open(&fname) {
[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 `Result<File, std::io::Error>` has significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/lib.rs:140:15
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn overwrite_existing(&self, key: &K, value: V) -> Result<(), Error> {
[INFO] [stdout]     |                                               ----- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 140 |         match File::open(&fname) {
[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] [stderr] error: could not compile `diskmap` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `diskmap` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "85b56be72f74d73309ed6eb0f3348806f0751358e51c32afb6f75c69f24fb407", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85b56be72f74d73309ed6eb0f3348806f0751358e51c32afb6f75c69f24fb407", kill_on_drop: false }`
[INFO] [stdout] 85b56be72f74d73309ed6eb0f3348806f0751358e51c32afb6f75c69f24fb407