[INFO] fetching crate lsm_engine 0.1.9...
[INFO] testing lsm_engine-0.1.9 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate lsm_engine 0.1.9 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate lsm_engine 0.1.9
[INFO] finished tweaking crates.io crate lsm_engine 0.1.9
[INFO] tweaked toml for crates.io crate lsm_engine 0.1.9 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lsm_engine 0.1.9 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 40 packages to latest compatible versions
[INFO] [stderr]       Adding binary-heap-plus v0.2.0 (available: v0.5.0)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.9.2)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.17)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad13f23269d68ce699de89d3a2a21eb8ca028e2a18981e6edbc1e8fd891380eb
[INFO] running `Command { std: "docker" "start" "-a" "ad13f23269d68ce699de89d3a2a21eb8ca028e2a18981e6edbc1e8fd891380eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad13f23269d68ce699de89d3a2a21eb8ca028e2a18981e6edbc1e8fd891380eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad13f23269d68ce699de89d3a2a21eb8ca028e2a18981e6edbc1e8fd891380eb", kill_on_drop: false }`
[INFO] [stdout] ad13f23269d68ce699de89d3a2a21eb8ca028e2a18981e6edbc1e8fd891380eb
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9372e0cff13bc7c1f350dc9930ac9a2cd76e0ba9b5d2ccbef885427ef97512b4
[INFO] running `Command { std: "docker" "start" "-a" "9372e0cff13bc7c1f350dc9930ac9a2cd76e0ba9b5d2ccbef885427ef97512b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling bitflags v2.10.0
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling zerocopy v0.8.27
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling compare v0.1.0
[INFO] [stderr]    Compiling syn v2.0.108
[INFO] [stderr]    Compiling binary-heap-plus v0.2.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling tempfile v3.23.0
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling lsm_engine v0.1.9 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `serde::export`
[INFO] [stdout]  --> src/kv.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde::export::TryFrom;
[INFO] [stdout]   |            ^^^^^^ could not find `export` in `serde`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lsm_engine` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "9372e0cff13bc7c1f350dc9930ac9a2cd76e0ba9b5d2ccbef885427ef97512b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9372e0cff13bc7c1f350dc9930ac9a2cd76e0ba9b5d2ccbef885427ef97512b4", kill_on_drop: false }`
[INFO] [stdout] 9372e0cff13bc7c1f350dc9930ac9a2cd76e0ba9b5d2ccbef885427ef97512b4