[INFO] fetching crate descent_macro 0.5.0...
[INFO] checking descent_macro-0.5.0 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604
[INFO] extracting crate descent_macro 0.5.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate descent_macro 0.5.0 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 descent_macro 0.5.0
[INFO] finished tweaking crates.io crate descent_macro 0.5.0
[INFO] tweaked toml for crates.io crate descent_macro 0.5.0 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" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 9 packages to latest compatible versions
[INFO] [stderr]       Adding snafu v0.6.10 (latest: v0.8.4)
[INFO] [stderr]       Adding snafu-derive v0.6.10 (latest: v0.8.4)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.77)
[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]     Blocking waiting for file lock on package cache
[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] e8b385cf6888cfffd6d867de23337ac9824bbc47c38d9f3637c68e360831ddb3
[INFO] running `Command { std: "docker" "start" "-a" "e8b385cf6888cfffd6d867de23337ac9824bbc47c38d9f3637c68e360831ddb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8b385cf6888cfffd6d867de23337ac9824bbc47c38d9f3637c68e360831ddb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8b385cf6888cfffd6d867de23337ac9824bbc47c38d9f3637c68e360831ddb3", kill_on_drop: false }`
[INFO] [stdout] e8b385cf6888cfffd6d867de23337ac9824bbc47c38d9f3637c68e360831ddb3
[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] 82e57fb2ce0da7a82a5ff6f03b796f5429283929e7f5f5b17f4c624def3fb3c9
[INFO] running `Command { std: "docker" "start" "-a" "82e57fb2ce0da7a82a5ff6f03b796f5429283929e7f5f5b17f4c624def3fb3c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking descent_macro v0.5.0 (/opt/rustwide/workdir)
[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/lib.rs:233:14
[INFO] [stdout]     |
[INFO] [stdout] 232 |   fn simplify(expr: Expr) -> Box<Expr> {
[INFO] [stdout]     |               ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 233 |       Box::new(match expr {
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 234 | |         Expr::Add(l, r) => {
[INFO] [stdout] 235 | |             if l.is_zero() {
[INFO] [stdout] 236 | |                 *r
[INFO] [stdout] ...   |
[INFO] [stdout] 301 | |         e => e,
[INFO] [stdout] 302 | |     })
[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: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `descent_macro` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "82e57fb2ce0da7a82a5ff6f03b796f5429283929e7f5f5b17f4c624def3fb3c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82e57fb2ce0da7a82a5ff6f03b796f5429283929e7f5f5b17f4c624def3fb3c9", kill_on_drop: false }`
[INFO] [stdout] 82e57fb2ce0da7a82a5ff6f03b796f5429283929e7f5f5b17f4c624def3fb3c9