[INFO] fetching crate tree-edit-distance 0.4.0... [INFO] testing tree-edit-distance-0.4.0 against beta-2025-10-28 for beta-1.92-2 [INFO] extracting crate tree-edit-distance 0.4.0 into /workspace/builds/worker-7-tc2/source [INFO] started tweaking crates.io crate tree-edit-distance 0.4.0 [INFO] finished tweaking crates.io crate tree-edit-distance 0.4.0 [INFO] tweaked toml for crates.io crate tree-edit-distance 0.4.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate tree-edit-distance 0.4.0 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 82 packages to latest compatible versions [INFO] [stderr] Adding criterion v0.4.0 (available: v0.7.0) [INFO] [stderr] Adding derive_more v0.99.20 (available: v2.0.1) [INFO] [stderr] Adding itertools v0.10.5 (available: v0.14.0) [INFO] [stderr] Adding pathfinding v3.0.14 (available: v4.14.0) [INFO] [stderr] Adding test-strategy v0.2.1 (available: v0.4.3) [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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 9f5e02f06293b8f37dc4d605323fb9ffb3c4daec22413ec9b80b73c3588b6eaf [INFO] running `Command { std: "docker" "start" "-a" "9f5e02f06293b8f37dc4d605323fb9ffb3c4daec22413ec9b80b73c3588b6eaf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9f5e02f06293b8f37dc4d605323fb9ffb3c4daec22413ec9b80b73c3588b6eaf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9f5e02f06293b8f37dc4d605323fb9ffb3c4daec22413ec9b80b73c3588b6eaf", kill_on_drop: false }` [INFO] [stdout] 9f5e02f06293b8f37dc4d605323fb9ffb3c4daec22413ec9b80b73c3588b6eaf [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 9e6b57d8f7053e72f20750c727ea70556b7bfd0de8327f1360b5b6121d578278 [INFO] running `Command { std: "docker" "start" "-a" "9e6b57d8f7053e72f20750c727ea70556b7bfd0de8327f1360b5b6121d578278", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling indexmap v1.9.3 [INFO] [stderr] Compiling thiserror v1.0.69 [INFO] [stderr] Compiling hashbrown v0.12.3 [INFO] [stderr] Compiling either v1.15.0 [INFO] [stderr] Compiling rustc-hash v1.1.0 [INFO] [stderr] Compiling fixedbitset v0.4.2 [INFO] [stderr] Compiling syn v2.0.108 [INFO] [stderr] Compiling arrayvec v0.7.6 [INFO] [stderr] Compiling itertools v0.10.5 [INFO] [stderr] Compiling integer-sqrt v0.1.5 [INFO] [stderr] Compiling thiserror-impl v1.0.69 [INFO] [stderr] Compiling derive_more v0.99.20 [INFO] [stderr] Compiling pathfinding v3.0.14 [INFO] [stderr] Compiling tree-edit-distance v0.4.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait `Fold` is never used [INFO] [stdout] --> src/fold.rs:3:18 [INFO] [stdout] | [INFO] [stdout] 3 | pub(crate) trait Fold { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/memoize.rs:46:35 [INFO] [stdout] | [INFO] [stdout] 46 | pub(crate) fn memoize(t: &T) -> Memoized { [INFO] [stdout] | ^^ ^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 46 | pub(crate) fn memoize(t: &T) -> Memoized<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.41s [INFO] running `Command { std: "docker" "inspect" "9e6b57d8f7053e72f20750c727ea70556b7bfd0de8327f1360b5b6121d578278", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9e6b57d8f7053e72f20750c727ea70556b7bfd0de8327f1360b5b6121d578278", kill_on_drop: false }` [INFO] [stdout] 9e6b57d8f7053e72f20750c727ea70556b7bfd0de8327f1360b5b6121d578278 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 47678b63ef032c15952c1e8bf6e49a2ac4507c12775018e1dbb1c5b263a99fd9 [INFO] running `Command { std: "docker" "start" "-a" "47678b63ef032c15952c1e8bf6e49a2ac4507c12775018e1dbb1c5b263a99fd9", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.177 [INFO] [stderr] Compiling zerocopy v0.8.27 [INFO] [stderr] Compiling crossbeam-utils v0.8.21 [INFO] [stderr] Compiling getrandom v0.3.4 [INFO] [stderr] Compiling serde_core v1.0.228 [INFO] [stderr] Compiling indexmap v1.9.3 [INFO] [stderr] Compiling syn v2.0.108 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling serde v1.0.228 [INFO] [stderr] Compiling regex-syntax v0.8.8 [INFO] [stderr] Compiling rayon-core v1.13.0 [INFO] [stderr] Compiling memchr v2.7.6 [INFO] [stderr] Compiling crossbeam-epoch v0.9.18 [INFO] [stderr] Compiling os_str_bytes v6.6.1 [INFO] [stderr] Compiling crossbeam-deque v0.8.6 [INFO] [stderr] Compiling ciborium-io v0.2.2 [INFO] [stderr] Compiling clap_lex v0.2.4 [INFO] [stderr] Compiling textwrap v0.16.2 [INFO] [stderr] Compiling cast v0.3.0 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling walkdir v2.5.0 [INFO] [stderr] Compiling rand_core v0.9.3 [INFO] [stderr] Compiling rayon v1.11.0 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling regex-automata v0.4.13 [INFO] [stderr] Compiling rand_xorshift v0.4.0 [INFO] [stderr] Compiling rand v0.9.2 [INFO] [stderr] Compiling serde_json v1.0.145 [INFO] [stderr] Compiling clap v3.2.25 [INFO] [stderr] Compiling criterion-plot v0.5.0 [INFO] [stderr] Compiling bitflags v2.10.0 [INFO] [stderr] Compiling oorandom v11.1.5 [INFO] [stderr] Compiling anes v0.1.6 [INFO] [stderr] Compiling unarray v0.1.4 [INFO] [stderr] Compiling assert_matches v1.5.0 [INFO] [stderr] Compiling regex v1.12.2 [INFO] [stderr] Compiling structmeta-derive v0.1.6 [INFO] [stderr] Compiling zerocopy-derive v0.8.27 [INFO] [stderr] Compiling serde_derive v1.0.228 [INFO] [stderr] Compiling thiserror-impl v1.0.69 [INFO] [stderr] Compiling derive_more v0.99.20 [INFO] [stderr] Compiling structmeta v0.1.6 [INFO] [stderr] Compiling test-strategy v0.2.1 [INFO] [stderr] Compiling thiserror v1.0.69 [INFO] [stderr] Compiling pathfinding v3.0.14 [INFO] [stderr] Compiling tree-edit-distance v0.4.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait `Fold` is never used [INFO] [stdout] --> src/fold.rs:3:18 [INFO] [stdout] | [INFO] [stdout] 3 | pub(crate) trait Fold { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/memoize.rs:46:35 [INFO] [stdout] | [INFO] [stdout] 46 | pub(crate) fn memoize(t: &T) -> Memoized { [INFO] [stdout] | ^^ ^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 46 | pub(crate) fn memoize(t: &T) -> Memoized<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling tinytemplate v1.2.1 [INFO] [stderr] Compiling half v2.7.1 [INFO] [stderr] Compiling ppv-lite86 v0.2.21 [INFO] [stderr] Compiling rand_chacha v0.9.0 [INFO] [stderr] Compiling ciborium-ll v0.2.2 [INFO] [stderr] Compiling ciborium v0.2.2 [INFO] [stderr] Compiling proptest v1.9.0 [INFO] [stderr] Compiling criterion v0.4.0 [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/memoize.rs:46:35 [INFO] [stdout] | [INFO] [stdout] 46 | pub(crate) fn memoize(t: &T) -> Memoized { [INFO] [stdout] | ^^ ^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 46 | pub(crate) fn memoize(t: &T) -> Memoized<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 1m 04s [INFO] running `Command { std: "docker" "inspect" "47678b63ef032c15952c1e8bf6e49a2ac4507c12775018e1dbb1c5b263a99fd9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "47678b63ef032c15952c1e8bf6e49a2ac4507c12775018e1dbb1c5b263a99fd9", kill_on_drop: false }` [INFO] [stdout] 47678b63ef032c15952c1e8bf6e49a2ac4507c12775018e1dbb1c5b263a99fd9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 1b44ea1622d157152d4b855ebf5198390e4885ef64bd93265c9de90432f84231 [INFO] running `Command { std: "docker" "start" "-a" "1b44ea1622d157152d4b855ebf5198390e4885ef64bd93265c9de90432f84231", kill_on_drop: false }` [INFO] [stderr] warning: trait `Fold` is never used [INFO] [stderr] --> src/fold.rs:3:18 [INFO] [stderr] | [INFO] [stderr] 3 | pub(crate) trait Fold { [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/memoize.rs:46:35 [INFO] [stderr] | [INFO] [stderr] 46 | pub(crate) fn memoize(t: &T) -> Memoized { [INFO] [stderr] | ^^ ^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stderr] | | [INFO] [stderr] | the lifetime is elided here [INFO] [stderr] | [INFO] [stderr] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stderr] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stderr] help: use `'_` for type paths [INFO] [stderr] | [INFO] [stderr] 46 | pub(crate) fn memoize(t: &T) -> Memoized<'_, T> { [INFO] [stderr] | +++ [INFO] [stderr] [INFO] [stderr] warning: `tree-edit-distance` (lib) generated 2 warnings (run `cargo fix --lib -p tree-edit-distance` to apply 1 suggestion) [INFO] [stderr] warning: `tree-edit-distance` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.14s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tree_edit_distance-bea7ed5eb050b80d) [INFO] [stdout] [INFO] [stdout] running 14 tests [INFO] [stdout] test cost::tests::cost_of_slice_equals_sum_of_costs ... ok [INFO] [stdout] test diff::tests::the_cost_is_at_most_equal_to_the_sum_of_costs ... ok [INFO] [stdout] test diff::tests::the_cost_of_swapping_nodes_is_equal_to_the_sum_of_their_costs ... ok [INFO] [stdout] test memoize::tests::cost_is_memoized ... ok [INFO] [stdout] test diff::tests::the_cost_between_identical_trees_is_zero ... ok [INFO] [stdout] test diff::tests::nodes_of_different_kinds_cannot_be_replaced ... ok [INFO] [stdout] test diff::tests::the_number_of_edits_is_at_most_equal_to_the_total_number_of_nodes ... ok [INFO] [stdout] test tree::tests::cost_equals_weight_plus_sum_of_costs_of_children ... ok [INFO] [stdout] test tree::tests::count_equals_one_plus_sum_of_count_of_children ... ok [INFO] [stdout] test memoize::tests::kind_is_preserved ... ok [INFO] [stdout] test memoize::tests::weight_is_preserved ... ok [INFO] [stdout] test diff::tests::the_cost_is_always_minimized ... ok [INFO] [stdout] test diff::tests::nodes_of_equal_kinds_can_be_replaced ... ok [INFO] [stderr] Doc-tests tree_edit_distance [INFO] [stdout] test diff::tests::the_cost_of_replacing_nodes_does_not_depend_on_their_weights ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.33s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test src/lib.rs - (line 13) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.49s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "1b44ea1622d157152d4b855ebf5198390e4885ef64bd93265c9de90432f84231", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1b44ea1622d157152d4b855ebf5198390e4885ef64bd93265c9de90432f84231", kill_on_drop: false }` [INFO] [stdout] 1b44ea1622d157152d4b855ebf5198390e4885ef64bd93265c9de90432f84231