[INFO] fetching crate time_varying_graph 0.1.3...
[INFO] testing time_varying_graph-0.1.3 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate time_varying_graph 0.1.3 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate time_varying_graph 0.1.3
[INFO] finished tweaking crates.io crate time_varying_graph 0.1.3
[INFO] tweaked toml for crates.io crate time_varying_graph 0.1.3 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate time_varying_graph 0.1.3 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "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-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 44 packages to latest compatible versions
[INFO] [stderr]       Adding indexmap v1.9.3 (available: v2.14.0)
[INFO] [stderr]       Adding petgraph v0.6.5 (available: v0.8.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f87aeef74fbc2f44233886e4078370e6518207a91556fbcf3cf0fe0f19796b6b
[INFO] running `Command { std: "docker" "start" "-a" "f87aeef74fbc2f44233886e4078370e6518207a91556fbcf3cf0fe0f19796b6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f87aeef74fbc2f44233886e4078370e6518207a91556fbcf3cf0fe0f19796b6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f87aeef74fbc2f44233886e4078370e6518207a91556fbcf3cf0fe0f19796b6b", kill_on_drop: false }`
[INFO] [stdout] f87aeef74fbc2f44233886e4078370e6518207a91556fbcf3cf0fe0f19796b6b
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d7b94ac59267aa358f7b4ad1161c140ff26b6ded07ea0c73ed5eb7ffb3faece
[INFO] running `Command { std: "docker" "start" "-a" "7d7b94ac59267aa358f7b4ad1161c140ff26b6ded07ea0c73ed5eb7ffb3faece", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling errno v0.3.14
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling socket2 v0.6.3
[INFO] [stderr]    Compiling mio v1.2.0
[INFO] [stderr]    Compiling fixedbitset v0.4.2
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling json v0.12.4
[INFO] [stderr]    Compiling allen_interval_algebra v0.1.2
[INFO] [stderr]    Compiling tokio-macros v2.7.0
[INFO] [stderr]    Compiling signal-hook-registry v1.4.8
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling petgraph v0.6.5
[INFO] [stderr]    Compiling tokio v1.52.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling time_varying_graph v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `petgraph::visit::IntoEdges`
[INFO] [stdout]   --> src/tvg.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 | use petgraph::visit::IntoEdges;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ret` is never read
[INFO] [stdout]    --> src/tvg.rs:279:23
[INFO] [stdout]     |
[INFO] [stdout] 279 |         let mut ret = String::new();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 318 |         ret = serde_json::to_string(&json_data).unwrap();
[INFO] [stdout]     |         --- `ret` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.16s
[INFO] running `Command { std: "docker" "inspect" "7d7b94ac59267aa358f7b4ad1161c140ff26b6ded07ea0c73ed5eb7ffb3faece", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d7b94ac59267aa358f7b4ad1161c140ff26b6ded07ea0c73ed5eb7ffb3faece", kill_on_drop: false }`
[INFO] [stdout] 7d7b94ac59267aa358f7b4ad1161c140ff26b6ded07ea0c73ed5eb7ffb3faece
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f390983b10b00f59a3337580ab167da19be71cbc8f2cb7a3dbc1246cacf6f14
[INFO] running `Command { std: "docker" "start" "-a" "4f390983b10b00f59a3337580ab167da19be71cbc8f2cb7a3dbc1246cacf6f14", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `petgraph::visit::IntoEdges`
[INFO] [stdout]   --> src/tvg.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 | use petgraph::visit::IntoEdges;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ret` is never read
[INFO] [stdout]    --> src/tvg.rs:279:23
[INFO] [stdout]     |
[INFO] [stdout] 279 |         let mut ret = String::new();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 318 |         ret = serde_json::to_string(&json_data).unwrap();
[INFO] [stdout]     |         --- `ret` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling time_varying_graph v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `petgraph::visit::IntoEdges`
[INFO] [stdout]   --> src/tvg.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 | use petgraph::visit::IntoEdges;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ret` is never read
[INFO] [stdout]    --> src/tvg.rs:279:23
[INFO] [stdout]     |
[INFO] [stdout] 279 |         let mut ret = String::new();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 318 |         ret = serde_json::to_string(&json_data).unwrap();
[INFO] [stdout]     |         --- `ret` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]    --> src/lib.rs:172:34
[INFO] [stdout]     |
[INFO] [stdout] 172 |         while let Ok((node_name, path)) = receiver.recv() {
[INFO] [stdout]     |                                  ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.69s
[INFO] running `Command { std: "docker" "inspect" "4f390983b10b00f59a3337580ab167da19be71cbc8f2cb7a3dbc1246cacf6f14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f390983b10b00f59a3337580ab167da19be71cbc8f2cb7a3dbc1246cacf6f14", kill_on_drop: false }`
[INFO] [stdout] 4f390983b10b00f59a3337580ab167da19be71cbc8f2cb7a3dbc1246cacf6f14
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8b343e1ecfa42bbcea7647fa5049e9bc9e2028eab35e9a7acc6f51094da4e9e9
[INFO] running `Command { std: "docker" "start" "-a" "8b343e1ecfa42bbcea7647fa5049e9bc9e2028eab35e9a7acc6f51094da4e9e9", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `petgraph::visit::IntoEdges`
[INFO] [stderr]   --> src/tvg.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 | use petgraph::visit::IntoEdges;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `ret` is never read
[INFO] [stderr]    --> src/tvg.rs:279:23
[INFO] [stderr]     |
[INFO] [stderr] 279 |         let mut ret = String::new();
[INFO] [stderr]     |                       ^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stderr] ...
[INFO] [stderr] 318 |         ret = serde_json::to_string(&json_data).unwrap();
[INFO] [stderr]     |         --- `ret` is overwritten here before the previous value is read
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `time_varying_graph` (lib) generated 2 warnings
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]    --> src/lib.rs:172:34
[INFO] [stderr]     |
[INFO] [stderr] 172 |         while let Ok((node_name, path)) = receiver.recv() {
[INFO] [stderr]     |                                  ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `time_varying_graph` (lib test) generated 3 warnings (2 duplicates) (run `cargo fix --lib -p time_varying_graph --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/time_varying_graph-8d20822495a72c5d)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::test_json_export ... ok
[INFO] [stdout] test tests::test_tvg_data_load ... ok
[INFO] [stderr]    Doc-tests time_varying_graph
[INFO] [stdout] test tests::test_json_load ... ok
[INFO] [stdout] test tests::tvg_bfs_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 5) ... ok
[INFO] [stdout] test src/tvg.rs - tvg (line 3) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.45s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8b343e1ecfa42bbcea7647fa5049e9bc9e2028eab35e9a7acc6f51094da4e9e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b343e1ecfa42bbcea7647fa5049e9bc9e2028eab35e9a7acc6f51094da4e9e9", kill_on_drop: false }`
[INFO] [stdout] 8b343e1ecfa42bbcea7647fa5049e9bc9e2028eab35e9a7acc6f51094da4e9e9
