[INFO] fetching crate shoulda_core 0.2.1...
[INFO] testing shoulda_core-0.2.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate shoulda_core 0.2.1 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate shoulda_core 0.2.1
[INFO] finished tweaking crates.io crate shoulda_core 0.2.1
[INFO] tweaked toml for crates.io crate shoulda_core 0.2.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate shoulda_core 0.2.1 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 8 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-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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 22bdf4133c856d4c54671a77b75ca9c049dad91f82243cac2a2a2f1e41601a67
[INFO] running `Command { std: "docker" "start" "-a" "22bdf4133c856d4c54671a77b75ca9c049dad91f82243cac2a2a2f1e41601a67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "22bdf4133c856d4c54671a77b75ca9c049dad91f82243cac2a2a2f1e41601a67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22bdf4133c856d4c54671a77b75ca9c049dad91f82243cac2a2a2f1e41601a67", kill_on_drop: false }`
[INFO] [stdout] 22bdf4133c856d4c54671a77b75ca9c049dad91f82243cac2a2a2f1e41601a67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 0d06c2658dd632d853a1869974478a5c425463d2ce06f71125d3b47dc12ebf71
[INFO] running `Command { std: "docker" "start" "-a" "0d06c2658dd632d853a1869974478a5c425463d2ce06f71125d3b47dc12ebf71", kill_on_drop: false }`
[INFO] [stderr]    Compiling const_env_impl v0.1.5
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.2.3
[INFO] [stderr]    Compiling const_env v0.1.5
[INFO] [stderr]    Compiling shoulda_core v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `from_env`: Deprecated alias of env_item, use env_item instead
[INFO] [stdout]  --> src/epsilon_provider.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[from_env]
[INFO] [stdout]   |   ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:130:15
[INFO] [stdout]     |
[INFO] [stdout] 130 |     fn should(&self) -> Should<Self>
[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] 130 |     fn should(&self) -> Should<'_, Self>
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/wrapper_types.rs:72:47
[INFO] [stdout]    |
[INFO] [stdout] 72 |         self.get().should_eq::<Epsilon>(&other.borrow().get())
[INFO] [stdout]    |                                               ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `Cell<T>` does not implement `Borrow`, so calling `borrow` on `&Cell<T>` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout] 72 -         self.get().should_eq::<Epsilon>(&other.borrow().get())
[INFO] [stdout] 72 +         self.get().should_eq::<Epsilon>(&other.get())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.25s
[INFO] running `Command { std: "docker" "inspect" "0d06c2658dd632d853a1869974478a5c425463d2ce06f71125d3b47dc12ebf71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d06c2658dd632d853a1869974478a5c425463d2ce06f71125d3b47dc12ebf71", kill_on_drop: false }`
[INFO] [stdout] 0d06c2658dd632d853a1869974478a5c425463d2ce06f71125d3b47dc12ebf71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f820baf09a481e5791c2f1384ffd716d829165c1a107e0c45c45281332f167ad
[INFO] running `Command { std: "docker" "start" "-a" "f820baf09a481e5791c2f1384ffd716d829165c1a107e0c45c45281332f167ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling shoulda_core v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `from_env`: Deprecated alias of env_item, use env_item instead
[INFO] [stdout]  --> src/epsilon_provider.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[from_env]
[INFO] [stdout]   |   ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:130:15
[INFO] [stdout]     |
[INFO] [stdout] 130 |     fn should(&self) -> Should<Self>
[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] 130 |     fn should(&self) -> Should<'_, Self>
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/wrapper_types.rs:72:47
[INFO] [stdout]    |
[INFO] [stdout] 72 |         self.get().should_eq::<Epsilon>(&other.borrow().get())
[INFO] [stdout]    |                                               ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `Cell<T>` does not implement `Borrow`, so calling `borrow` on `&Cell<T>` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout] 72 -         self.get().should_eq::<Epsilon>(&other.borrow().get())
[INFO] [stdout] 72 +         self.get().should_eq::<Epsilon>(&other.get())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `from_env`: Deprecated alias of env_item, use env_item instead
[INFO] [stdout]  --> src/epsilon_provider.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[from_env]
[INFO] [stdout]   |   ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:130:15
[INFO] [stdout]     |
[INFO] [stdout] 130 |     fn should(&self) -> Should<Self>
[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] 130 |     fn should(&self) -> Should<'_, Self>
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/wrapper_types.rs:72:47
[INFO] [stdout]    |
[INFO] [stdout] 72 |         self.get().should_eq::<Epsilon>(&other.borrow().get())
[INFO] [stdout]    |                                               ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `Cell<T>` does not implement `Borrow`, so calling `borrow` on `&Cell<T>` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout] 72 -         self.get().should_eq::<Epsilon>(&other.borrow().get())
[INFO] [stdout] 72 +         self.get().should_eq::<Epsilon>(&other.get())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.03s
[INFO] running `Command { std: "docker" "inspect" "f820baf09a481e5791c2f1384ffd716d829165c1a107e0c45c45281332f167ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f820baf09a481e5791c2f1384ffd716d829165c1a107e0c45c45281332f167ad", kill_on_drop: false }`
[INFO] [stdout] f820baf09a481e5791c2f1384ffd716d829165c1a107e0c45c45281332f167ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 69698a25ce91a64949e95d9b3d2f566e0a462beef912841e60bdeda8cc1a0dbe
[INFO] running `Command { std: "docker" "start" "-a" "69698a25ce91a64949e95d9b3d2f566e0a462beef912841e60bdeda8cc1a0dbe", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated macro `from_env`: Deprecated alias of env_item, use env_item instead
[INFO] [stderr]  --> src/epsilon_provider.rs:7:3
[INFO] [stderr]   |
[INFO] [stderr] 7 | #[from_env]
[INFO] [stderr]   |   ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/lib.rs:130:15
[INFO] [stderr]     |
[INFO] [stderr] 130 |     fn should(&self) -> Should<Self>
[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] 130 |     fn should(&self) -> Should<'_, Self>
[INFO] [stderr]     |                                +++
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stderr]   --> src/wrapper_types.rs:72:47
[INFO] [stderr]    |
[INFO] [stderr] 72 |         self.get().should_eq::<Epsilon>(&other.borrow().get())
[INFO] [stderr]    |                                               ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: the type `Cell<T>` does not implement `Borrow`, so calling `borrow` on `&Cell<T>` copies the reference, which does not do anything and can be removed
[INFO] [stderr]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stderr] help: remove this redundant call
[INFO] [stderr]    |
[INFO] [stderr] 72 -         self.get().should_eq::<Epsilon>(&other.borrow().get())
[INFO] [stderr] 72 +         self.get().should_eq::<Epsilon>(&other.get())
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `shoulda_core` (lib) generated 3 warnings (run `cargo fix --lib -p shoulda_core` to apply 2 suggestions)
[INFO] [stderr] warning: `shoulda_core` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/shoulda_core-2752b53117ba42b5)
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test specifics::iter::tests::should_not_contain_sequence ... ok
[INFO] [stdout] test specifics::iter::tests::should_not_contains ... ok
[INFO] [stdout] test specifics::iter::tests::should_not_contain ... ok
[INFO] [stdout] test specifics::iter::tests::should_contain_sequence ... ok
[INFO] [stdout] test tests::float_diff_changes ... ok
[INFO] [stdout] test tests::of_type ... ok
[INFO] [stdout] test tests::operation_order_dependent ... ok
[INFO] [stdout] test tests::panic_catching ... ok
[INFO] [stdout] test tests::should_panic_on_fail ... ok
[INFO] [stdout] test tests::string_and_str ... ok
[INFO] [stdout] test specifics::iter::tests::should_contain ... ok
[INFO] [stdout] test tests::tuples ... ok
[INFO] [stdout] test tests::vec_cow_i32 ... ok
[INFO] [stdout] test tests::vec_cow_str ... ok
[INFO] [stdout] test specifics::iter::tests::should_contains ... ok
[INFO] [stdout] test tests::contains ... ok
[INFO] [stdout] test tests::or_operation ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests shoulda_core
[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" "69698a25ce91a64949e95d9b3d2f566e0a462beef912841e60bdeda8cc1a0dbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69698a25ce91a64949e95d9b3d2f566e0a462beef912841e60bdeda8cc1a0dbe", kill_on_drop: false }`
[INFO] [stdout] 69698a25ce91a64949e95d9b3d2f566e0a462beef912841e60bdeda8cc1a0dbe
