[INFO] fetching crate multiset 0.0.5...
[INFO] testing multiset-0.0.5 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate multiset 0.0.5 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate multiset 0.0.5
[INFO] finished tweaking crates.io crate multiset 0.0.5
[INFO] tweaked toml for crates.io crate multiset 0.0.5 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate multiset 0.0.5 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] 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] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 3356810baeb64fd36030a03090d7435013274a4690932d2ee403a7e3e0104989
[INFO] running `Command { std: "docker" "start" "-a" "3356810baeb64fd36030a03090d7435013274a4690932d2ee403a7e3e0104989", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3356810baeb64fd36030a03090d7435013274a4690932d2ee403a7e3e0104989", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3356810baeb64fd36030a03090d7435013274a4690932d2ee403a7e3e0104989", kill_on_drop: false }`
[INFO] [stdout] 3356810baeb64fd36030a03090d7435013274a4690932d2ee403a7e3e0104989
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 462dd7368aa5fa8150bfd4e61476a8529894ebea0c341d60143d5b15da84c766
[INFO] running `Command { std: "docker" "start" "-a" "462dd7368aa5fa8150bfd4e61476a8529894ebea0c341d60143d5b15da84c766", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling multiset v0.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/multiset.rs:96:17
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub fn iter(&self) -> Iter<K> {
[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] 96 |     pub fn iter(&self) -> Iter<'_, K> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "462dd7368aa5fa8150bfd4e61476a8529894ebea0c341d60143d5b15da84c766", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "462dd7368aa5fa8150bfd4e61476a8529894ebea0c341d60143d5b15da84c766", kill_on_drop: false }`
[INFO] [stdout] 462dd7368aa5fa8150bfd4e61476a8529894ebea0c341d60143d5b15da84c766
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] a2fc7be782e78860c5042c9b2de01a666d58d22a9a04c6fbae68f4982681f12c
[INFO] running `Command { std: "docker" "start" "-a" "a2fc7be782e78860c5042c9b2de01a666d58d22a9a04c6fbae68f4982681f12c", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/multiset.rs:96:17
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub fn iter(&self) -> Iter<K> {
[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] 96 |     pub fn iter(&self) -> Iter<'_, K> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling multiset v0.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/multiset.rs:96:17
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub fn iter(&self) -> Iter<K> {
[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] 96 |     pub fn iter(&self) -> Iter<'_, K> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "a2fc7be782e78860c5042c9b2de01a666d58d22a9a04c6fbae68f4982681f12c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2fc7be782e78860c5042c9b2de01a666d58d22a9a04c6fbae68f4982681f12c", kill_on_drop: false }`
[INFO] [stdout] a2fc7be782e78860c5042c9b2de01a666d58d22a9a04c6fbae68f4982681f12c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 1cefc0eb87c0ea317f55ce3d5fc1d922b0e84ef76c1a9166239a91dc05626dce
[INFO] running `Command { std: "docker" "start" "-a" "1cefc0eb87c0ea317f55ce3d5fc1d922b0e84ef76c1a9166239a91dc05626dce", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/multiset.rs:96:17
[INFO] [stderr]    |
[INFO] [stderr] 96 |     pub fn iter(&self) -> Iter<K> {
[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] 96 |     pub fn iter(&self) -> Iter<'_, K> {
[INFO] [stderr]    |                                +++
[INFO] [stderr] 
[INFO] [stderr] warning: `multiset` (lib) generated 1 warning (run `cargo fix --lib -p multiset` to apply 1 suggestion)
[INFO] [stderr] warning: `multiset` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/multiset-bd5c4bfd01ad4f6a)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test multiset::test_multiset::test_eq ... ok
[INFO] [stdout] test multiset::test_multiset::test_iterate ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests multiset
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test src/multiset.rs - multiset::HashMultiSet<K>::is_empty (line 108) ... ok
[INFO] [stdout] test src/multiset.rs - multiset::HashMultiSet<K>::contains (line 128) ... ok
[INFO] [stdout] test src/multiset.rs - multiset::HashMultiSet<K>::remove (line 244) ... ok
[INFO] [stdout] test src/multiset.rs - multiset::HashMultiSet<K>::remove_all (line 303) ... ok
[INFO] [stdout] test src/multiset.rs - multiset::HashMultiSet<K>::insert_times (line 216) ... ok
[INFO] [stdout] test src/multiset.rs - multiset::HashMultiSet<K>::len (line 148) ... ok
[INFO] [stdout] test src/multiset.rs - multiset::HashMultiSet<K>::iter (line 83) ... ok
[INFO] [stdout] test src/multiset.rs - multiset::HashMultiSet<K>::len (line 157) ... ok
[INFO] [stdout] test src/multiset.rs - multiset::HashMultiSet<K>::count_of (line 320) ... ok
[INFO] [stdout] test src/multiset.rs - multiset::HashMultiSet<A>::from_iter (line 418) ... ok
[INFO] [stdout] test src/multiset.rs - multiset::HashMultiSet<K>::insert (line 198) ... ok
[INFO] [stdout] test src/multiset.rs - multiset::HashMultiSet<K>::remove_times (line 266) ... ok
[INFO] [stdout] test src/multiset.rs - multiset::HashMultiSet<K>::distinct_elements (line 175) ... ok
[INFO] [stdout] test src/multiset.rs - multiset::HashMultiSet<T>::add (line 348) ... ok
[INFO] [stdout] test src/multiset.rs - multiset::HashMultiSet<K>::new (line 66) ... ok
[INFO] [stdout] test src/multiset.rs - multiset::HashMultiSet<T>::sub (line 387) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.23s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1cefc0eb87c0ea317f55ce3d5fc1d922b0e84ef76c1a9166239a91dc05626dce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cefc0eb87c0ea317f55ce3d5fc1d922b0e84ef76c1a9166239a91dc05626dce", kill_on_drop: false }`
[INFO] [stdout] 1cefc0eb87c0ea317f55ce3d5fc1d922b0e84ef76c1a9166239a91dc05626dce