[INFO] fetching crate tree-edit-distance 0.4.0...
[INFO] testing tree-edit-distance-0.4.0 against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] extracting crate tree-edit-distance 0.4.0 into /workspace/builds/worker-7-tc1/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-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tree-edit-distance 0.4.0 on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "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: v0.8.2)
[INFO] [stderr]       Adding derive_more v0.99.20 (available: v2.1.1)
[INFO] [stderr]       Adding itertools v0.10.5 (available: v0.14.0)
[INFO] [stderr]       Adding pathfinding v3.0.14 (available: v4.15.0)
[INFO] [stderr]       Adding test-strategy v0.2.1 (available: v0.4.5)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded structmeta v0.1.6
[INFO] [stderr]   Downloaded structmeta-derive v0.1.6
[INFO] [stderr]   Downloaded integer-sqrt v0.1.5
[INFO] [stderr]   Downloaded test-strategy v0.2.1
[INFO] [stderr]   Downloaded pathfinding v3.0.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5d5872f5ea33d9938444c7aa314effa42c1673ef906f78915173e991ec4de1a8
[INFO] running `Command { std: "docker" "start" "-a" "5d5872f5ea33d9938444c7aa314effa42c1673ef906f78915173e991ec4de1a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d5872f5ea33d9938444c7aa314effa42c1673ef906f78915173e991ec4de1a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d5872f5ea33d9938444c7aa314effa42c1673ef906f78915173e991ec4de1a8", kill_on_drop: false }`
[INFO] [stdout] 5d5872f5ea33d9938444c7aa314effa42c1673ef906f78915173e991ec4de1a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35050dd6eda6b20a81e990e9f876527d2947892c96f1abd82252848b0579c285
[INFO] running `Command { std: "docker" "start" "-a" "35050dd6eda6b20a81e990e9f876527d2947892c96f1abd82252848b0579c285", kill_on_drop: false }`
[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 num-traits v0.2.19
[INFO] [stderr]    Compiling syn v2.0.117
[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<I: ?Sized = Self> {
[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: Tree>(t: &T) -> Memoized<T> {
[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: Tree>(t: &T) -> Memoized<'_, T> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.21s
[INFO] running `Command { std: "docker" "inspect" "35050dd6eda6b20a81e990e9f876527d2947892c96f1abd82252848b0579c285", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35050dd6eda6b20a81e990e9f876527d2947892c96f1abd82252848b0579c285", kill_on_drop: false }`
[INFO] [stdout] 35050dd6eda6b20a81e990e9f876527d2947892c96f1abd82252848b0579c285
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7081f8de2c59403eb4ac7a33eb312e09f6bf2e0fb1c0e3179afdbd77d80c2ec3
[INFO] running `Command { std: "docker" "start" "-a" "7081f8de2c59403eb4ac7a33eb312e09f6bf2e0fb1c0e3179afdbd77d80c2ec3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling os_str_bytes v6.6.1
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling textwrap v0.16.2
[INFO] [stderr]    Compiling assert_matches v1.5.0
[INFO] [stderr]    Compiling rayon v1.12.0
[INFO] [stderr]    Compiling clap_lex v0.2.4
[INFO] [stderr]    Compiling clap v3.2.25
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling rand_core v0.9.5
[INFO] [stderr]    Compiling rand_xorshift v0.4.0
[INFO] [stderr]    Compiling rand v0.9.4
[INFO] [stderr]    Compiling regex v1.12.3
[INFO] [stderr]    Compiling structmeta-derive v0.1.6
[INFO] [stderr]    Compiling zerocopy-derive v0.8.48
[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 zerocopy v0.8.48
[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<I: ?Sized = Self> {
[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: Tree>(t: &T) -> Memoized<T> {
[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: Tree>(t: &T) -> Memoized<'_, T> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde v1.0.228
[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 ciborium-ll v0.2.2
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling proptest v1.11.0
[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: Tree>(t: &T) -> Memoized<T> {
[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: Tree>(t: &T) -> Memoized<'_, T> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 24.14s
[INFO] running `Command { std: "docker" "inspect" "7081f8de2c59403eb4ac7a33eb312e09f6bf2e0fb1c0e3179afdbd77d80c2ec3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7081f8de2c59403eb4ac7a33eb312e09f6bf2e0fb1c0e3179afdbd77d80c2ec3", kill_on_drop: false }`
[INFO] [stdout] 7081f8de2c59403eb4ac7a33eb312e09f6bf2e0fb1c0e3179afdbd77d80c2ec3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 65ffdd0af3102aefa7fee1b95dd52629859c50b781ffae9431a3cb0f465ebd02
[INFO] running `Command { std: "docker" "start" "-a" "65ffdd0af3102aefa7fee1b95dd52629859c50b781ffae9431a3cb0f465ebd02", 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<I: ?Sized = Self> {
[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: Tree>(t: &T) -> Memoized<T> {
[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: Tree>(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 0.32s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tree_edit_distance-3427c2d00bc64543)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test cost::tests::cost_of_slice_equals_sum_of_costs ... ok
[INFO] [stdout] test memoize::tests::kind_is_preserved ... 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_number_of_edits_is_at_most_equal_to_the_total_number_of_nodes ... ok
[INFO] [stdout] test diff::tests::nodes_of_different_kinds_cannot_be_replaced ... ok
[INFO] [stdout] test tree::tests::count_equals_one_plus_sum_of_count_of_children ... ok
[INFO] [stdout] test memoize::tests::cost_is_memoized ... ok
[INFO] [stdout] test memoize::tests::weight_is_preserved ... ok
[INFO] [stdout] test diff::tests::the_cost_is_at_most_equal_to_the_sum_of_costs ... ok
[INFO] [stdout] test tree::tests::cost_equals_weight_plus_sum_of_costs_of_children ... ok
[INFO] [stdout] test diff::tests::the_cost_between_identical_trees_is_zero ... 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] [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 1.54s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tree_edit_distance
[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 0.60s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "65ffdd0af3102aefa7fee1b95dd52629859c50b781ffae9431a3cb0f465ebd02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65ffdd0af3102aefa7fee1b95dd52629859c50b781ffae9431a3cb0f465ebd02", kill_on_drop: false }`
[INFO] [stdout] 65ffdd0af3102aefa7fee1b95dd52629859c50b781ffae9431a3cb0f465ebd02
