[INFO] fetching crate rusttyc 0.5.0...
[INFO] testing rusttyc-0.5.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rusttyc 0.5.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate rusttyc 0.5.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate rusttyc 0.5.0
[INFO] tweaked toml for crates.io crate rusttyc 0.5.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rusttyc 0.5.0 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] crate crates.io crate rusttyc 0.5.0 already has a lockfile, it will not be regenerated
[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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 7c8f772b69c7ee580495c21b2a03a31ac4e9e126087b527163f2ad648d088678
[INFO] running `Command { std: "docker" "start" "-a" "7c8f772b69c7ee580495c21b2a03a31ac4e9e126087b527163f2ad648d088678", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c8f772b69c7ee580495c21b2a03a31ac4e9e126087b527163f2ad648d088678", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c8f772b69c7ee580495c21b2a03a31ac4e9e126087b527163f2ad648d088678", kill_on_drop: false }`
[INFO] [stdout] 7c8f772b69c7ee580495c21b2a03a31ac4e9e126087b527163f2ad648d088678
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 584b4c7ea8ebf5a19dba5a522b2d983db4bee5ae81e0148a43d6f713e74994b5
[INFO] running `Command { std: "docker" "start" "-a" "584b4c7ea8ebf5a19dba5a522b2d983db4bee5ae81e0148a43d6f713e74994b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling rusttyc v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "584b4c7ea8ebf5a19dba5a522b2d983db4bee5ae81e0148a43d6f713e74994b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "584b4c7ea8ebf5a19dba5a522b2d983db4bee5ae81e0148a43d6f713e74994b5", kill_on_drop: false }`
[INFO] [stdout] 584b4c7ea8ebf5a19dba5a522b2d983db4bee5ae81e0148a43d6f713e74994b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 68a5599defd5f4bbc8a4cb7a37766aae9248f2df19d55d582e1e6479b81f5b9b
[INFO] running `Command { std: "docker" "start" "-a" "68a5599defd5f4bbc8a4cb7a37766aae9248f2df19d55d582e1e6479b81f5b9b", kill_on_drop: false }`
[INFO] [stderr]    Compiling rusttyc v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Variable` is never constructed
[INFO] [stdout]   --> examples/parametrized_function.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | struct Variable(usize);
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> examples/parametrized_function.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |     PolyFn {
[INFO] [stdout]    |     ------ field in this variant
[INFO] [stdout] 89 |         name: &'static str,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> examples/parametrized_function.rs:95:15
[INFO] [stdout]    |
[INFO] [stdout] 95 |     ConstBool(bool),
[INFO] [stdout]    |     --------- ^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 95 -     ConstBool(bool),
[INFO] [stdout] 95 +     ConstBool(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> examples/parametrized_function.rs:149:13
[INFO] [stdout]     |
[INFO] [stdout] 149 |             &params;
[INFO] [stdout]     |             ^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 149 |             let _ = &params;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/tests.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |     PolyFn {
[INFO] [stdout]    |     ------ field in this variant
[INFO] [stdout] 90 |         name: &'static str,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/tests.rs:96:15
[INFO] [stdout]    |
[INFO] [stdout] 96 |     ConstBool(bool),
[INFO] [stdout]    |     --------- ^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 96 -     ConstBool(bool),
[INFO] [stdout] 96 +     ConstBool(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `Command { std: "docker" "inspect" "68a5599defd5f4bbc8a4cb7a37766aae9248f2df19d55d582e1e6479b81f5b9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68a5599defd5f4bbc8a4cb7a37766aae9248f2df19d55d582e1e6479b81f5b9b", kill_on_drop: false }`
[INFO] [stdout] 68a5599defd5f4bbc8a4cb7a37766aae9248f2df19d55d582e1e6479b81f5b9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 00f5f1a40f3ad3b5e4c9efeb83fdfb185ea12d8ab472c6fa6597d74e6fa1ca83
[INFO] running `Command { std: "docker" "start" "-a" "00f5f1a40f3ad3b5e4c9efeb83fdfb185ea12d8ab472c6fa6597d74e6fa1ca83", kill_on_drop: false }`
[INFO] [stderr] warning: struct `Variable` is never constructed
[INFO] [stderr]   --> examples/parametrized_function.rs:25:8
[INFO] [stderr]    |
[INFO] [stderr] 25 | struct Variable(usize);
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `name` is never read
[INFO] [stderr]   --> examples/parametrized_function.rs:89:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |     PolyFn {
[INFO] [stderr]    |     ------ field in this variant
[INFO] [stderr] 89 |         name: &'static str,
[INFO] [stderr]    |         ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> examples/parametrized_function.rs:95:15
[INFO] [stderr]    |
[INFO] [stderr] 95 |     ConstBool(bool),
[INFO] [stderr]    |     --------- ^^^^
[INFO] [stderr]    |     |
[INFO] [stderr]    |     field in this variant
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 95 -     ConstBool(bool),
[INFO] [stderr] 95 +     ConstBool(()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> examples/parametrized_function.rs:149:13
[INFO] [stderr]     |
[INFO] [stderr] 149 |             &params;
[INFO] [stderr]     |             ^^^^^^^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 149 |             let _ = &params;
[INFO] [stderr]     |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `rusttyc` (example "parametrized_function") generated 4 warnings
[INFO] [stderr] warning: field `name` is never read
[INFO] [stderr]   --> src/tests.rs:90:9
[INFO] [stderr]    |
[INFO] [stderr] 89 |     PolyFn {
[INFO] [stderr]    |     ------ field in this variant
[INFO] [stderr] 90 |         name: &'static str,
[INFO] [stderr]    |         ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> src/tests.rs:96:15
[INFO] [stderr]    |
[INFO] [stderr] 96 |     ConstBool(bool),
[INFO] [stderr]    |     --------- ^^^^
[INFO] [stderr]    |     |
[INFO] [stderr]    |     field in this variant
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 96 -     ConstBool(bool),
[INFO] [stderr] 96 +     ConstBool(()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `rusttyc` (lib test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rusttyc-f56fbafd28dd4f7a)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test tests::bound_by_concrete_transitive ... ok
[INFO] [stdout] test tests::create_different_types ... ok
[INFO] [stdout] test tests::failing_type_check ... ok
[INFO] [stdout] test tests::test_asym_separation ... ok
[INFO] [stdout] test tests::test_asym_simple ... ok
[INFO] [stdout] test tests::test_asym_order ... ok
[INFO] [stdout] test tests::test_variable_dedup ... ok
[INFO] [stdout] test tests::test_meet ... ok
[INFO] [stdout] test tests::complex_type_check ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rusttyc
[INFO] [stderr] warning: lint `broken_intra_doc_links` has been renamed to `rustdoc::broken_intra_doc_links`
[INFO] [stderr]   --> src/lib.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     broken_intra_doc_links,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `rustdoc::broken_intra_doc_links`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/keys.rs - keys::TcKey (line 48) ... ok
[INFO] [stdout] test src/lib.rs - (line 18) ... ok
[INFO] [stdout] test src/lib.rs - (line 30) ... ok
[INFO] [stdout] test src/keys.rs - keys::TcKey (line 87) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.51s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "00f5f1a40f3ad3b5e4c9efeb83fdfb185ea12d8ab472c6fa6597d74e6fa1ca83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00f5f1a40f3ad3b5e4c9efeb83fdfb185ea12d8ab472c6fa6597d74e6fa1ca83", kill_on_drop: false }`
[INFO] [stdout] 00f5f1a40f3ad3b5e4c9efeb83fdfb185ea12d8ab472c6fa6597d74e6fa1ca83
