[INFO] fetching crate hopcroft-karp 0.2.1...
[INFO] testing hopcroft-karp-0.2.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate hopcroft-karp 0.2.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate hopcroft-karp 0.2.1
[INFO] finished tweaking crates.io crate hopcroft-karp 0.2.1
[INFO] tweaked toml for crates.io crate hopcroft-karp 0.2.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate hopcroft-karp 0.2.1 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 16 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding rand_chacha v0.3.1 (available: v0.9.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 237034d8505d3c97826f0b7d070da13890958eb3cd2c0c88c7291adee2098930
[INFO] running `Command { std: "docker" "start" "-a" "237034d8505d3c97826f0b7d070da13890958eb3cd2c0c88c7291adee2098930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "237034d8505d3c97826f0b7d070da13890958eb3cd2c0c88c7291adee2098930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "237034d8505d3c97826f0b7d070da13890958eb3cd2c0c88c7291adee2098930", kill_on_drop: false }`
[INFO] [stdout] 237034d8505d3c97826f0b7d070da13890958eb3cd2c0c88c7291adee2098930
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3aa2101526b01c1598022fb771768c406fcaa13f92ddcdce792dd2cf1001b20
[INFO] running `Command { std: "docker" "start" "-a" "d3aa2101526b01c1598022fb771768c406fcaa13f92ddcdce792dd2cf1001b20", kill_on_drop: false }`
[INFO] [stderr]    Compiling hopcroft-karp v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:250:42
[INFO] [stdout]     |
[INFO] [stdout] 250 |     fn neighbours<'a>(&'a self, u:&V) -> std::collections::hash_set::Iter<V>  {
[INFO] [stdout]     |                        --                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is named 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: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 250 |     fn neighbours<'a>(&'a self, u:&V) -> std::collections::hash_set::Iter<'a, V>  {
[INFO] [stdout]     |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:254:65
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn neighbours_guarded<'a>(&'a self, guarded:&Guarded<V>) -> std::collections::hash_set::Iter<V>  {
[INFO] [stdout]     |                                -- the lifetime is named here    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn neighbours_guarded<'a>(&'a self, guarded:&Guarded<V>) -> std::collections::hash_set::Iter<'a, V>  {
[INFO] [stdout]     |                                                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "d3aa2101526b01c1598022fb771768c406fcaa13f92ddcdce792dd2cf1001b20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3aa2101526b01c1598022fb771768c406fcaa13f92ddcdce792dd2cf1001b20", kill_on_drop: false }`
[INFO] [stdout] d3aa2101526b01c1598022fb771768c406fcaa13f92ddcdce792dd2cf1001b20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 33f3bd80c88ba537f51fa25868ecf4f4c3024956e73100205e0be8a892b31a1b
[INFO] running `Command { std: "docker" "start" "-a" "33f3bd80c88ba537f51fa25868ecf4f4c3024956e73100205e0be8a892b31a1b", kill_on_drop: false }`
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:250:42
[INFO] [stdout]     |
[INFO] [stdout] 250 |     fn neighbours<'a>(&'a self, u:&V) -> std::collections::hash_set::Iter<V>  {
[INFO] [stdout]     |                        --                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is named 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: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 250 |     fn neighbours<'a>(&'a self, u:&V) -> std::collections::hash_set::Iter<'a, V>  {
[INFO] [stdout]     |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:254:65
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn neighbours_guarded<'a>(&'a self, guarded:&Guarded<V>) -> std::collections::hash_set::Iter<V>  {
[INFO] [stdout]     |                                -- the lifetime is named here    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn neighbours_guarded<'a>(&'a self, guarded:&Guarded<V>) -> std::collections::hash_set::Iter<'a, V>  {
[INFO] [stdout]     |                                                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling hopcroft-karp v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:250:42
[INFO] [stdout]     |
[INFO] [stdout] 250 |     fn neighbours<'a>(&'a self, u:&V) -> std::collections::hash_set::Iter<V>  {
[INFO] [stdout]     |                        --                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is named 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: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 250 |     fn neighbours<'a>(&'a self, u:&V) -> std::collections::hash_set::Iter<'a, V>  {
[INFO] [stdout]     |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:254:65
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn neighbours_guarded<'a>(&'a self, guarded:&Guarded<V>) -> std::collections::hash_set::Iter<V>  {
[INFO] [stdout]     |                                -- the lifetime is named here    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn neighbours_guarded<'a>(&'a self, guarded:&Guarded<V>) -> std::collections::hash_set::Iter<'a, V>  {
[INFO] [stdout]     |                                                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `Command { std: "docker" "inspect" "33f3bd80c88ba537f51fa25868ecf4f4c3024956e73100205e0be8a892b31a1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33f3bd80c88ba537f51fa25868ecf4f4c3024956e73100205e0be8a892b31a1b", kill_on_drop: false }`
[INFO] [stdout] 33f3bd80c88ba537f51fa25868ecf4f4c3024956e73100205e0be8a892b31a1b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c14019f6364e35c8206846457f5b025ade2eeaf3548e31deb1be52c67188d0b6
[INFO] running `Command { std: "docker" "start" "-a" "c14019f6364e35c8206846457f5b025ade2eeaf3548e31deb1be52c67188d0b6", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stderr]    --> src/lib.rs:250:42
[INFO] [stderr]     |
[INFO] [stderr] 250 |     fn neighbours<'a>(&'a self, u:&V) -> std::collections::hash_set::Iter<V>  {
[INFO] [stderr]     |                        --                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        the lifetime is named 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: consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 250 |     fn neighbours<'a>(&'a self, u:&V) -> std::collections::hash_set::Iter<'a, V>  {
[INFO] [stderr]     |                                                                           +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stderr]    --> src/lib.rs:254:65
[INFO] [stderr]     |
[INFO] [stderr] 254 |     fn neighbours_guarded<'a>(&'a self, guarded:&Guarded<V>) -> std::collections::hash_set::Iter<V>  {
[INFO] [stderr]     |                                -- the lifetime is named here    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 254 |     fn neighbours_guarded<'a>(&'a self, guarded:&Guarded<V>) -> std::collections::hash_set::Iter<'a, V>  {
[INFO] [stderr]     |                                                                                                  +++
[INFO] [stderr] 
[INFO] [stderr] warning: `hopcroft-karp` (lib) generated 2 warnings (run `cargo fix --lib -p hopcroft-karp` to apply 2 suggestions)
[INFO] [stderr] warning: `hopcroft-karp` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/hopcroft_karp-1ff472c532eca5ef)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::test_basic ... ok
[INFO] [stdout] test tests::test_edge_cases ... ok
[INFO] [stdout] test tests::test_spiderman ... ok
[INFO] [stdout] test tests::test_random_lopsided ... ok
[INFO] [stdout] test tests::test_random_perfect ... ok
[INFO] [stdout] test tests::test_non_bipartite - should panic ... ok
[INFO] [stderr]    Doc-tests hopcroft_karp
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 3) ... ok
[INFO] [stdout] test src/lib.rs - (line 13) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.92s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c14019f6364e35c8206846457f5b025ade2eeaf3548e31deb1be52c67188d0b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c14019f6364e35c8206846457f5b025ade2eeaf3548e31deb1be52c67188d0b6", kill_on_drop: false }`
[INFO] [stdout] c14019f6364e35c8206846457f5b025ade2eeaf3548e31deb1be52c67188d0b6
