[INFO] fetching crate tree-edit-distance 0.4.0... [INFO] testing tree-edit-distance-0.4.0 against beta-2025-09-21 for beta-1.91-3 [INFO] extracting crate tree-edit-distance 0.4.0 into /workspace/builds/worker-2-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-2-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate tree-edit-distance 0.4.0 on toolchain beta-2025-09-21 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 83 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-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 23f9d4376436b63f4a8016919750f08d3a750563485ff02f4ca42159c854e4a2 [INFO] running `Command { std: "docker" "start" "-a" "23f9d4376436b63f4a8016919750f08d3a750563485ff02f4ca42159c854e4a2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "23f9d4376436b63f4a8016919750f08d3a750563485ff02f4ca42159c854e4a2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "23f9d4376436b63f4a8016919750f08d3a750563485ff02f4ca42159c854e4a2", kill_on_drop: false }` [INFO] [stdout] 23f9d4376436b63f4a8016919750f08d3a750563485ff02f4ca42159c854e4a2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 484426abd947d21dde51a3c67d98f53301e1a1c37742b6fde6f932a7313f3b2a [INFO] running `Command { std: "docker" "start" "-a" "484426abd947d21dde51a3c67d98f53301e1a1c37742b6fde6f932a7313f3b2a", kill_on_drop: false }` [INFO] [stderr] Compiling indexmap v1.9.3 [INFO] [stderr] Compiling rustc-hash v1.1.0 [INFO] [stderr] Compiling fixedbitset v0.4.2 [INFO] [stderr] Compiling arrayvec v0.7.6 [INFO] [stderr] Compiling syn v2.0.106 [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 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] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.49s [INFO] running `Command { std: "docker" "inspect" "484426abd947d21dde51a3c67d98f53301e1a1c37742b6fde6f932a7313f3b2a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "484426abd947d21dde51a3c67d98f53301e1a1c37742b6fde6f932a7313f3b2a", kill_on_drop: false }` [INFO] [stdout] 484426abd947d21dde51a3c67d98f53301e1a1c37742b6fde6f932a7313f3b2a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4cbe9acf79d18a459bd9afdd32d3b2f795c976dfe8802a485cfbb769a8a6abf0 [INFO] running `Command { std: "docker" "start" "-a" "4cbe9acf79d18a459bd9afdd32d3b2f795c976dfe8802a485cfbb769a8a6abf0", kill_on_drop: false }` [INFO] [stderr] Compiling serde_core v1.0.228 [INFO] [stderr] Compiling libc v0.2.176 [INFO] [stderr] Compiling serde v1.0.228 [INFO] [stderr] Compiling serde_derive v1.0.228 [INFO] [stderr] Compiling half v2.6.0 [INFO] [stderr] Compiling os_str_bytes v6.6.1 [INFO] [stderr] Compiling memchr v2.7.6 [INFO] [stderr] Compiling ppv-lite86 v0.2.21 [INFO] [stderr] Compiling clap_lex v0.2.4 [INFO] [stderr] Compiling ciborium-ll v0.2.2 [INFO] [stderr] Compiling structmeta-derive v0.1.6 [INFO] [stderr] Compiling regex-automata v0.4.11 [INFO] [stderr] Compiling textwrap v0.16.2 [INFO] [stderr] Compiling pathfinding v3.0.14 [INFO] [stderr] Compiling clap v3.2.25 [INFO] [stderr] Compiling rayon v1.11.0 [INFO] [stderr] Compiling getrandom v0.3.3 [INFO] [stderr] Compiling structmeta v0.1.6 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling rand_core v0.9.3 [INFO] [stderr] Compiling test-strategy v0.2.1 [INFO] [stderr] Compiling tree-edit-distance v0.4.0 (/opt/rustwide/workdir) [INFO] [stderr] Compiling rand v0.9.2 [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 rand_xorshift v0.4.0 [INFO] [stderr] Compiling rand_chacha v0.9.0 [INFO] [stderr] Compiling regex v1.11.3 [INFO] [stderr] Compiling proptest v1.8.0 [INFO] [stderr] Compiling serde_json v1.0.145 [INFO] [stderr] Compiling ciborium v0.2.2 [INFO] [stderr] Compiling tinytemplate v1.2.1 [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 44.99s [INFO] running `Command { std: "docker" "inspect" "4cbe9acf79d18a459bd9afdd32d3b2f795c976dfe8802a485cfbb769a8a6abf0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4cbe9acf79d18a459bd9afdd32d3b2f795c976dfe8802a485cfbb769a8a6abf0", kill_on_drop: false }` [INFO] [stdout] 4cbe9acf79d18a459bd9afdd32d3b2f795c976dfe8802a485cfbb769a8a6abf0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] d88dd99cc8b89a407f205f5e432c0009852ba5132f5e2a3204e9a1960a9e76bb [INFO] running `Command { std: "docker" "start" "-a" "d88dd99cc8b89a407f205f5e432c0009852ba5132f5e2a3204e9a1960a9e76bb", 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 0.13s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tree_edit_distance-d97b78528bd634b0) [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_of_swapping_nodes_is_equal_to_the_sum_of_their_costs ... ok [INFO] [stdout] test diff::tests::the_cost_is_at_most_equal_to_the_sum_of_costs ... ok [INFO] [stdout] test diff::tests::nodes_of_different_kinds_cannot_be_replaced ... ok [INFO] [stdout] test diff::tests::the_cost_between_identical_trees_is_zero ... 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 memoize::tests::cost_is_memoized ... ok [INFO] [stdout] test memoize::tests::kind_is_preserved ... ok [INFO] [stdout] test memoize::tests::weight_is_preserved ... ok [INFO] [stdout] test tree::tests::count_equals_one_plus_sum_of_count_of_children ... ok [INFO] [stdout] test diff::tests::the_cost_is_always_minimized ... ok [INFO] [stdout] test diff::tests::the_cost_of_replacing_nodes_does_not_depend_on_their_weights ... ok [INFO] [stdout] test diff::tests::nodes_of_equal_kinds_can_be_replaced ... ok [INFO] [stderr] Doc-tests tree_edit_distance [INFO] [stdout] [INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.94s [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 0.62s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "d88dd99cc8b89a407f205f5e432c0009852ba5132f5e2a3204e9a1960a9e76bb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d88dd99cc8b89a407f205f5e432c0009852ba5132f5e2a3204e9a1960a9e76bb", kill_on_drop: false }` [INFO] [stdout] d88dd99cc8b89a407f205f5e432c0009852ba5132f5e2a3204e9a1960a9e76bb