[INFO] fetching crate jj-lib-proc-macros 0.20.0...
[INFO] checking jj-lib-proc-macros-0.20.0 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604
[INFO] extracting crate jj-lib-proc-macros 0.20.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate jj-lib-proc-macros 0.20.0 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 jj-lib-proc-macros 0.20.0
[INFO] finished tweaking crates.io crate jj-lib-proc-macros 0.20.0
[INFO] tweaked toml for crates.io crate jj-lib-proc-macros 0.20.0 written to /workspace/builds/worker-5-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 5 packages to latest compatible versions
[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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 71ad58d1fbc97bccd9615edc27135a882f78892d84f5e7cb3da4cf0e40e1f6cc
[INFO] running `Command { std: "docker" "start" "-a" "71ad58d1fbc97bccd9615edc27135a882f78892d84f5e7cb3da4cf0e40e1f6cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71ad58d1fbc97bccd9615edc27135a882f78892d84f5e7cb3da4cf0e40e1f6cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71ad58d1fbc97bccd9615edc27135a882f78892d84f5e7cb3da4cf0e40e1f6cc", kill_on_drop: false }`
[INFO] [stdout] 71ad58d1fbc97bccd9615edc27135a882f78892d84f5e7cb3da4cf0e40e1f6cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] c28c5445a22e42ea3b6a01c62a06a0f5b972f79d44be5da6a444ec3c02f9b327
[INFO] running `Command { std: "docker" "start" "-a" "c28c5445a22e42ea3b6a01c62a06a0f5b972f79d44be5da6a444ec3c02f9b327", kill_on_drop: false }`
[INFO] [stderr]     Checking syn v2.0.77
[INFO] [stderr]     Checking jj-lib-proc-macros v0.20.0 (/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/content_hash.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 102 |   fn enum_bindings_with_type<'a>(fields: impl IntoIterator<Item = &'a Field>) -> Vec<(Type, Ident)> {
[INFO] [stdout]     |                                  ------------------------------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 103 | /     fields
[INFO] [stdout] 104 | |         .into_iter()
[INFO] [stdout] 105 | |         .enumerate()
[INFO] [stdout] 106 | |         .map(|(i, f)| {
[INFO] [stdout] ...   |
[INFO] [stdout] 111 | |             )
[INFO] [stdout] 112 | |         })
[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/content_hash.rs:117:5
[INFO] [stdout]     |
[INFO] [stdout] 116 |   fn enum_bindings<'a>(fields: impl IntoIterator<Item = &'a Field>) -> Vec<Ident> {
[INFO] [stdout]     |                        ------------------------------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 117 | /     enum_bindings_with_type(fields)
[INFO] [stdout] 118 | |         .into_iter()
[INFO] [stdout] 119 | |         .map(|(_, b)| b)
[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: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/content_hash.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 102 |   fn enum_bindings_with_type<'a>(fields: impl IntoIterator<Item = &'a Field>) -> Vec<(Type, Ident)> {
[INFO] [stdout]     |                                  ------------------------------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 103 | /     fields
[INFO] [stdout] 104 | |         .into_iter()
[INFO] [stdout] 105 | |         .enumerate()
[INFO] [stdout] 106 | |         .map(|(i, f)| {
[INFO] [stdout] ...   |
[INFO] [stdout] 111 | |             )
[INFO] [stdout] 112 | |         })
[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/content_hash.rs:117:5
[INFO] [stdout]     |
[INFO] [stdout] 116 |   fn enum_bindings<'a>(fields: impl IntoIterator<Item = &'a Field>) -> Vec<Ident> {
[INFO] [stdout]     |                        ------------------------------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 117 | /     enum_bindings_with_type(fields)
[INFO] [stdout] 118 | |         .into_iter()
[INFO] [stdout] 119 | |         .map(|(_, b)| b)
[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 `jj-lib-proc-macros` (lib test) 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 `jj-lib-proc-macros` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "c28c5445a22e42ea3b6a01c62a06a0f5b972f79d44be5da6a444ec3c02f9b327", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c28c5445a22e42ea3b6a01c62a06a0f5b972f79d44be5da6a444ec3c02f9b327", kill_on_drop: false }`
[INFO] [stdout] c28c5445a22e42ea3b6a01c62a06a0f5b972f79d44be5da6a444ec3c02f9b327