[INFO] fetching crate aleph-syntax-tree 0.1.0...
[INFO] checking aleph-syntax-tree-0.1.0 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604
[INFO] extracting crate aleph-syntax-tree 0.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate aleph-syntax-tree 0.1.0 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 aleph-syntax-tree 0.1.0
[INFO] finished tweaking crates.io crate aleph-syntax-tree 0.1.0
[INFO] tweaked toml for crates.io crate aleph-syntax-tree 0.1.0 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]     Updating crates.io index
[INFO] [stderr]      Locking 16 packages to latest compatible versions
[INFO] [stderr]       Adding heck v0.4.1 (latest: v0.5.0)
[INFO] [stderr]       Adding strum v0.24.1 (latest: v0.26.3)
[INFO] [stderr]       Adding strum_macros v0.24.3 (latest: v0.26.4)
[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] 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] 81a6d4b8f6ab2bab3c58ef077e6d998d8bef56ba75ae29c8107b7e414f89ff75
[INFO] running `Command { std: "docker" "start" "-a" "81a6d4b8f6ab2bab3c58ef077e6d998d8bef56ba75ae29c8107b7e414f89ff75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81a6d4b8f6ab2bab3c58ef077e6d998d8bef56ba75ae29c8107b7e414f89ff75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81a6d4b8f6ab2bab3c58ef077e6d998d8bef56ba75ae29c8107b7e414f89ff75", kill_on_drop: false }`
[INFO] [stdout] 81a6d4b8f6ab2bab3c58ef077e6d998d8bef56ba75ae29c8107b7e414f89ff75
[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] 924404d528b774a8952cd9bd2ce5689b083bb759a02d60e7a9f82895da4f10ce
[INFO] running `Command { std: "docker" "start" "-a" "924404d528b774a8952cd9bd2ce5689b083bb759a02d60e7a9f82895da4f10ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling rustversion v1.0.17
[INFO] [stderr]    Compiling serde v1.0.209
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde_json v1.0.127
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking strum v0.24.1
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling serde_derive v1.0.209
[INFO] [stderr]    Compiling strum_macros v0.24.3
[INFO] [stderr]     Checking aleph-syntax-tree v0.1.0 (/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/syntax.rs:191:5
[INFO] [stdout]     |
[INFO] [stdout] 190 | pub fn to_json(ast: AlephTree) -> String {
[INFO] [stdout]     |                -------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 191 |     serde_json::to_string_pretty(&ast).unwrap()
[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 `aleph-syntax-tree` (lib test) due to 2 previous errors
[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/syntax.rs:191:5
[INFO] [stdout]     |
[INFO] [stdout] 190 | pub fn to_json(ast: AlephTree) -> String {
[INFO] [stdout]     |                -------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 191 |     serde_json::to_string_pretty(&ast).unwrap()
[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 `aleph-syntax-tree` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "924404d528b774a8952cd9bd2ce5689b083bb759a02d60e7a9f82895da4f10ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "924404d528b774a8952cd9bd2ce5689b083bb759a02d60e7a9f82895da4f10ce", kill_on_drop: false }`
[INFO] [stdout] 924404d528b774a8952cd9bd2ce5689b083bb759a02d60e7a9f82895da4f10ce