[INFO] fetching crate causal-length 0.2.0...
[INFO] testing causal-length-0.2.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate causal-length 0.2.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate causal-length 0.2.0
[INFO] finished tweaking crates.io crate causal-length 0.2.0
[INFO] tweaked toml for crates.io crate causal-length 0.2.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate causal-length 0.2.0 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 39 packages to latest compatible versions
[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] 8911189fd04bcb2f27b9252c961cfabd2f2f6e6f4396daede402eb579729b5e7
[INFO] running `Command { std: "docker" "start" "-a" "8911189fd04bcb2f27b9252c961cfabd2f2f6e6f4396daede402eb579729b5e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8911189fd04bcb2f27b9252c961cfabd2f2f6e6f4396daede402eb579729b5e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8911189fd04bcb2f27b9252c961cfabd2f2f6e6f4396daede402eb579729b5e7", kill_on_drop: false }`
[INFO] [stdout] 8911189fd04bcb2f27b9252c961cfabd2f2f6e6f4396daede402eb579729b5e7
[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] 9f9ab52488e9898d3f5d05797510f30ff30c5bed7bfabd3ca7568c231551b0c5
[INFO] running `Command { std: "docker" "start" "-a" "9f9ab52488e9898d3f5d05797510f30ff30c5bed7bfabd3ca7568c231551b0c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling causal-length v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `serialization::*`
[INFO] [stdout]    --> src/map.rs:304:9
[INFO] [stdout]     |
[INFO] [stdout] 304 | pub use serialization::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serialization::*`
[INFO] [stdout]    --> src/set.rs:232:9
[INFO] [stdout]     |
[INFO] [stdout] 232 | pub use serialization::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/set.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let mut e = self
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.51s
[INFO] running `Command { std: "docker" "inspect" "9f9ab52488e9898d3f5d05797510f30ff30c5bed7bfabd3ca7568c231551b0c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f9ab52488e9898d3f5d05797510f30ff30c5bed7bfabd3ca7568c231551b0c5", kill_on_drop: false }`
[INFO] [stdout] 9f9ab52488e9898d3f5d05797510f30ff30c5bed7bfabd3ca7568c231551b0c5
[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] da3c0a1699cbee999d7b60b2a3fdc6a5c3d9434f33b959c4b6a145f9b4bd58c9
[INFO] running `Command { std: "docker" "start" "-a" "da3c0a1699cbee999d7b60b2a3fdc6a5c3d9434f33b959c4b6a145f9b4bd58c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling regex-syntax v0.8.6
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling quickcheck_macros v1.1.0
[INFO] [stdout] warning: unused import: `serialization::*`
[INFO] [stdout]    --> src/map.rs:304:9
[INFO] [stdout]     |
[INFO] [stdout] 304 | pub use serialization::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serialization::*`
[INFO] [stdout]    --> src/set.rs:232:9
[INFO] [stdout]     |
[INFO] [stdout] 232 | pub use serialization::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/set.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let mut e = self
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling regex-automata v0.4.11
[INFO] [stderr]    Compiling regex v1.11.3
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]    Compiling quickcheck v1.0.3
[INFO] [stderr]    Compiling causal-length v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `serialization::*`
[INFO] [stdout]    --> src/map.rs:304:9
[INFO] [stdout]     |
[INFO] [stdout] 304 | pub use serialization::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serialization::*`
[INFO] [stdout]    --> src/set.rs:232:9
[INFO] [stdout]     |
[INFO] [stdout] 232 | pub use serialization::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `rand::thread_rng`: Renamed to `rng`
[INFO] [stdout]    --> src/map.rs:533:30
[INFO] [stdout]     |
[INFO] [stdout] 533 |         v.shuffle(&mut rand::thread_rng());
[INFO] [stdout]     |                              ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `rand::thread_rng`: Renamed to `rng`
[INFO] [stdout]    --> src/map.rs:555:30
[INFO] [stdout]     |
[INFO] [stdout] 555 |         v.shuffle(&mut rand::thread_rng());
[INFO] [stdout]     |                              ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `rand::thread_rng`: Renamed to `rng`
[INFO] [stdout]    --> src/map.rs:577:33
[INFO] [stdout]     |
[INFO] [stdout] 577 |         copy.shuffle(&mut rand::thread_rng());
[INFO] [stdout]     |                                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `rand::thread_rng`: Renamed to `rng`
[INFO] [stdout]    --> src/set.rs:429:30
[INFO] [stdout]     |
[INFO] [stdout] 429 |         v.shuffle(&mut rand::thread_rng());
[INFO] [stdout]     |                              ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `rand::thread_rng`: Renamed to `rng`
[INFO] [stdout]    --> src/set.rs:458:33
[INFO] [stdout]     |
[INFO] [stdout] 458 |         copy.shuffle(&mut rand::thread_rng());
[INFO] [stdout]     |                                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/set.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let mut e = self
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 13.34s
[INFO] running `Command { std: "docker" "inspect" "da3c0a1699cbee999d7b60b2a3fdc6a5c3d9434f33b959c4b6a145f9b4bd58c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da3c0a1699cbee999d7b60b2a3fdc6a5c3d9434f33b959c4b6a145f9b4bd58c9", kill_on_drop: false }`
[INFO] [stdout] da3c0a1699cbee999d7b60b2a3fdc6a5c3d9434f33b959c4b6a145f9b4bd58c9
[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] 525f2b339a5ddac42b29befc14f9fcf55518282010cffb2591152dc50fe68270
[INFO] running `Command { std: "docker" "start" "-a" "525f2b339a5ddac42b29befc14f9fcf55518282010cffb2591152dc50fe68270", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `serialization::*`
[INFO] [stderr]    --> src/map.rs:304:9
[INFO] [stderr]     |
[INFO] [stderr] 304 | pub use serialization::*;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serialization::*`
[INFO] [stderr]    --> src/set.rs:232:9
[INFO] [stderr]     |
[INFO] [stderr] 232 | pub use serialization::*;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/set.rs:70:13
[INFO] [stderr]    |
[INFO] [stderr] 70 |         let mut e = self
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `rand::thread_rng`: Renamed to `rng`
[INFO] [stderr]    --> src/map.rs:533:30
[INFO] [stderr]     |
[INFO] [stderr] 533 |         v.shuffle(&mut rand::thread_rng());
[INFO] [stderr]     |                              ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `rand::thread_rng`: Renamed to `rng`
[INFO] [stderr]    --> src/map.rs:555:30
[INFO] [stderr]     |
[INFO] [stderr] 555 |         v.shuffle(&mut rand::thread_rng());
[INFO] [stderr]     |                              ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `rand::thread_rng`: Renamed to `rng`
[INFO] [stderr]    --> src/map.rs:577:33
[INFO] [stderr]     |
[INFO] [stderr] 577 |         copy.shuffle(&mut rand::thread_rng());
[INFO] [stderr]     |                                 ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `rand::thread_rng`: Renamed to `rng`
[INFO] [stderr]    --> src/set.rs:429:30
[INFO] [stderr]     |
[INFO] [stderr] 429 |         v.shuffle(&mut rand::thread_rng());
[INFO] [stderr]     |                              ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `rand::thread_rng`: Renamed to `rng`
[INFO] [stderr]    --> src/set.rs:458:33
[INFO] [stderr]     |
[INFO] [stderr] 458 |         copy.shuffle(&mut rand::thread_rng());
[INFO] [stderr]     |                                 ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `causal-length` (lib) generated 3 warnings (run `cargo fix --lib -p causal-length` to apply 3 suggestions)
[INFO] [stderr] warning: `causal-length` (lib test) generated 8 warnings (3 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/causal_length-0963d9e8ff11b0e8)
[INFO] [stdout] 
[INFO] [stdout] running 23 tests
[INFO] [stdout] test map::tests::test_add ... ok
[INFO] [stdout] test map::tests::test_order_independence ... ok
[INFO] [stdout] test map::tests::test_overwrite ... ok
[INFO] [stdout] test map::tests::test_merge ... ok
[INFO] [stdout] test map::tests::test_remove ... ok
[INFO] [stdout] test map::tests::test_retain ... ok
[INFO] [stdout] test register::tests::test_fup ... ok
[INFO] [stdout] test register::tests::test_merge ... ok
[INFO] [stdout] test register::tests::test_serialization ... ok
[INFO] [stdout] test map::tests::test_serialization ... ok
[INFO] [stdout] test set::tests::test_remove ... ok
[INFO] [stdout] test set::tests::test_add ... ok
[INFO] [stdout] test set::tests::test_retain ... ok
[INFO] [stdout] test set::tests::test_order_independence ... ok
[INFO] [stdout] test register::tests::is_merge_commutative ... ok
[INFO] [stdout] test set::tests::test_merge ... ok
[INFO] [stdout] test set::tests::is_merge_order_independent ... ok
[INFO] [stdout] test set::tests::is_merge_commutative ... ok
[INFO] [stdout] test set::tests::implementation_matches_model ... ok
[INFO] [stdout] test map::tests::simple_model::implementation_matches_model ... ok
[INFO] [stdout] test map::tests::test_merge_commutative ... ok
[INFO] [stdout] test map::tests::is_merge_order_independent ... ok
[INFO] [stderr]    Doc-tests causal_length
[INFO] [stdout] test set::tests::test_serialization ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 23 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.12s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "525f2b339a5ddac42b29befc14f9fcf55518282010cffb2591152dc50fe68270", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "525f2b339a5ddac42b29befc14f9fcf55518282010cffb2591152dc50fe68270", kill_on_drop: false }`
[INFO] [stdout] 525f2b339a5ddac42b29befc14f9fcf55518282010cffb2591152dc50fe68270
