[INFO] fetching crate libherokubuildpack 0.23.0...
[INFO] checking libherokubuildpack-0.23.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate libherokubuildpack 0.23.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate libherokubuildpack 0.23.0 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 libherokubuildpack 0.23.0
[INFO] finished tweaking crates.io crate libherokubuildpack 0.23.0
[INFO] tweaked toml for crates.io crate libherokubuildpack 0.23.0 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" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 122 packages to latest compatible versions
[INFO] [stderr]       Adding bit-set v0.5.3 (available: v0.8.0)
[INFO] [stderr]       Adding bit-vec v0.6.3 (available: v0.8.0)
[INFO] [stderr]       Adding fixedbitset v0.4.2 (available: v0.5.7)
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v1.1.0)
[INFO] [stderr]       Adding idna v0.5.0 (available: v1.0.2)
[INFO] [stderr]       Adding linux-raw-sys v0.4.14 (available: v0.6.5)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (available: v0.13.2+wasi-0.2.1)
[INFO] [stderr]       Adding windows-sys v0.52.0 (available: v0.59.0)
[INFO] [stderr]       Adding winsafe v0.0.19 (available: v0.0.22)
[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] 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] 7c6c27c27b6b32d1dc20d5d4f072685be40c85f3e40924d42341f0e10e063951
[INFO] running `Command { std: "docker" "start" "-a" "7c6c27c27b6b32d1dc20d5d4f072685be40c85f3e40924d42341f0e10e063951", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c6c27c27b6b32d1dc20d5d4f072685be40c85f3e40924d42341f0e10e063951", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c6c27c27b6b32d1dc20d5d4f072685be40c85f3e40924d42341f0e10e063951", kill_on_drop: false }`
[INFO] [stdout] 7c6c27c27b6b32d1dc20d5d4f072685be40c85f3e40924d42341f0e10e063951
[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] f2040a1eadcc3650d0ce0875590ab0466a682556bbb9c65319acf7367754a563
[INFO] running `Command { std: "docker" "start" "-a" "f2040a1eadcc3650d0ce0875590ab0466a682556bbb9c65319acf7367754a563", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling thiserror v1.0.64
[INFO] [stderr]    Compiling serde_json v1.0.128
[INFO] [stderr]    Compiling semver v1.0.23
[INFO] [stderr]    Compiling camino v1.1.9
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking regex-syntax v0.8.4
[INFO] [stderr]     Checking winnow v0.6.20
[INFO] [stderr]    Compiling typenum v1.17.0
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[INFO] [stderr]    Compiling cc v1.1.21
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[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]     Checking log v0.4.22
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[INFO] [stderr]     Checking uriparse v0.6.4
[INFO] [stderr]    Compiling generic-array v0.14.7
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[INFO] [stderr]     Checking bitflags v2.6.0
[INFO] [stderr]     Checking aho-corasick v1.1.3
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[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]     Checking indexmap v2.5.0
[INFO] [stderr]    Compiling pkg-config v0.3.31
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rustls-pki-types v1.8.0
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking untrusted v0.9.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking bstr v1.10.0
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[INFO] [stderr]    Compiling rustls v0.23.13
[INFO] [stderr]     Checking unicode-bidi v0.3.15
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[INFO] [stderr]    Compiling regex-automata v0.4.7
[INFO] [stderr]     Checking home v0.5.9
[INFO] [stderr]     Checking form_urlencoded v1.2.1
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[INFO] [stderr]     Checking zeroize v1.8.1
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[INFO] [stderr]     Checking subtle v2.6.1
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[INFO] [stderr]    Compiling indoc v2.0.5
[INFO] [stderr]     Checking petgraph v0.6.5
[INFO] [stderr]     Checking base64 v0.22.1
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[INFO] [stderr]     Checking tar v0.4.42
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]    Compiling libz-sys v1.1.20
[INFO] [stderr]     Checking pathdiff v0.2.1
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
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[INFO] [stderr]     Checking flate2 v1.0.33
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking url v2.5.2
[INFO] [stderr]     Checking which v6.0.3
[INFO] [stderr]     Checking tempfile v3.12.0
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]    Compiling thiserror-impl v1.0.64
[INFO] [stderr]    Compiling fancy-regex v0.13.0
[INFO] [stderr]     Checking globset v0.4.15
[INFO] [stderr]     Checking regex v1.10.6
[INFO] [stderr]     Checking ignore v0.4.23
[INFO] [stderr]     Checking rustls-webpki v0.102.8
[INFO] [stderr]     Checking ureq v2.10.1
[INFO] [stderr]     Checking serde_spanned v0.6.8
[INFO] [stderr]     Checking toml_datetime v0.6.8
[INFO] [stderr]     Checking cargo-platform v0.1.8
[INFO] [stderr]     Checking toml_edit v0.22.22
[INFO] [stderr]     Checking cargo_metadata v0.18.1
[INFO] [stderr]     Checking toml v0.8.19
[INFO] [stderr]     Checking libcnb-common v0.23.0
[INFO] [stderr]    Compiling libcnb-proc-macros v0.23.0
[INFO] [stderr]     Checking libcnb-data v0.23.0
[INFO] [stderr]     Checking libcnb-package v0.23.0
[INFO] [stderr]     Checking libcnb v0.23.0
[INFO] [stderr]     Checking libcnb-test v0.23.0
[INFO] [stderr]     Checking libherokubuildpack v0.23.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this value of type `Option<W>` has significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/write.rs:89:30
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub fn unwrap(mut self) -> W {
[INFO] [stdout]    |                   -------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 89 |         if let Some(inner) = self.inner.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]    = 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 `libherokubuildpack` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this value of type `Option<W>` has significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/write.rs:89:30
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub fn unwrap(mut self) -> W {
[INFO] [stdout]    |                   -------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 89 |         if let Some(inner) = self.inner.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]    = 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 `libherokubuildpack` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "f2040a1eadcc3650d0ce0875590ab0466a682556bbb9c65319acf7367754a563", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2040a1eadcc3650d0ce0875590ab0466a682556bbb9c65319acf7367754a563", kill_on_drop: false }`
[INFO] [stdout] f2040a1eadcc3650d0ce0875590ab0466a682556bbb9c65319acf7367754a563