[INFO] cloning repository https://github.com/WanderLanz/Lender
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/WanderLanz/Lender" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWanderLanz%2FLender", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWanderLanz%2FLender'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1ef8353b4e7efebbc610ef4a28c70c652028f23c
[INFO] testing WanderLanz/Lender against beta-2026-03-05 for beta-1.95-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWanderLanz%2FLender" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/WanderLanz/Lender
[INFO] finished tweaking git repo https://github.com/WanderLanz/Lender
[INFO] tweaked toml for git repo https://github.com/WanderLanz/Lender written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/WanderLanz/Lender on toolchain beta-2026-03-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-03-05" "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-2026-03-05" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 30 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-2026-03-05" "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-2026-03-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ffe629d029fed07b656b81cff4b79315c6cb209aa4022165ad8472f0b7114535
[INFO] running `Command { std: "docker" "start" "-a" "ffe629d029fed07b656b81cff4b79315c6cb209aa4022165ad8472f0b7114535", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffe629d029fed07b656b81cff4b79315c6cb209aa4022165ad8472f0b7114535", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffe629d029fed07b656b81cff4b79315c6cb209aa4022165ad8472f0b7114535", kill_on_drop: false }`
[INFO] [stdout] ffe629d029fed07b656b81cff4b79315c6cb209aa4022165ad8472f0b7114535
[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-2026-03-05" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b731890d6c7bb95032264b3f80044a3b5bf76e3b2542fcce8a61ac529014a74
[INFO] running `Command { std: "docker" "start" "-a" "3b731890d6c7bb95032264b3f80044a3b5bf76e3b2542fcce8a61ac529014a74", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]    Compiling aliasable v0.1.3
[INFO] [stderr]    Compiling fallible-iterator v0.3.0
[INFO] [stderr]    Compiling maybe-dangling v0.1.2
[INFO] [stderr]    Compiling stable_try_trait_v2 v1.75.1 (/opt/rustwide/workdir/stable_try_trait_v2)
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling lender-derive v0.1.3 (/opt/rustwide/workdir/lender-derive)
[INFO] [stderr]    Compiling lender v0.6.3 (/opt/rustwide/workdir/lender)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.78s
[INFO] running `Command { std: "docker" "inspect" "3b731890d6c7bb95032264b3f80044a3b5bf76e3b2542fcce8a61ac529014a74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b731890d6c7bb95032264b3f80044a3b5bf76e3b2542fcce8a61ac529014a74", kill_on_drop: false }`
[INFO] [stdout] 3b731890d6c7bb95032264b3f80044a3b5bf76e3b2542fcce8a61ac529014a74
[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-2026-03-05" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35ce2d62f7dd92107b64463b37cd2fd56d65b1d63b0ea0f99092e2d974a7ee19
[INFO] running `Command { std: "docker" "start" "-a" "35ce2d62f7dd92107b64463b37cd2fd56d65b1d63b0ea0f99092e2d974a7ee19", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling zmij v1.0.21
[INFO] [stderr]    Compiling target-triple v1.0.0
[INFO] [stderr]    Compiling winnow v0.7.15
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling toml_writer v1.0.6+spec-1.1.0
[INFO] [stderr]    Compiling itoa v1.0.17
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling glob v0.3.3
[INFO] [stderr]    Compiling stable_try_trait_v2 v1.75.1 (/opt/rustwide/workdir/stable_try_trait_v2)
[INFO] [stderr]    Compiling lender-derive v0.1.3 (/opt/rustwide/workdir/lender-derive)
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling lender v0.6.3 (/opt/rustwide/workdir/lender)
[INFO] [stderr]    Compiling toml_parser v1.0.9+spec-1.1.0
[INFO] [stderr]    Compiling toml_datetime v1.0.0+spec-1.1.0
[INFO] [stderr]    Compiling serde_spanned v1.0.4
[INFO] [stderr]    Compiling toml v1.0.6+spec-1.1.0
[INFO] [stderr]    Compiling trybuild v1.0.116
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 17.62s
[INFO] running `Command { std: "docker" "inspect" "35ce2d62f7dd92107b64463b37cd2fd56d65b1d63b0ea0f99092e2d974a7ee19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35ce2d62f7dd92107b64463b37cd2fd56d65b1d63b0ea0f99092e2d974a7ee19", kill_on_drop: false }`
[INFO] [stdout] 35ce2d62f7dd92107b64463b37cd2fd56d65b1d63b0ea0f99092e2d974a7ee19
[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-2026-03-05" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 04b9c1fc6039896e00da344a9ae3f27fc4bf0117a54abeaf9103fafbb5210fae
[INFO] running `Command { std: "docker" "start" "-a" "04b9c1fc6039896e00da344a9ae3f27fc4bf0117a54abeaf9103fafbb5210fae", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/lender-c90d472f58e55897)
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test adapters::flatten::test::test_flatmap_empty ... ok
[INFO] [stdout] test adapters::flatten::test::test_flatten ... ok
[INFO] [stdout] test fallible_adapters::flatten::test::test_flat_map_empty ... ok
[INFO] [stdout] test sources::windows_mut::test_array_windows_mut ... ok
[INFO] [stdout] test sources::windows_mut::test_windows_mut_back ... ok
[INFO] [stdout] test sources::windows_mut::test_windows_mut_exact_size_mixed ... ok
[INFO] [stdout] test fallible_adapters::flatten::test::test_flatten ... ok
[INFO] [stdout] test sources::windows_mut::test_array_windows_mut_exact_size ... ok
[INFO] [stdout] test sources::windows_mut::test_array_windows_mut_rev ... ok
[INFO] [stdout] test sources::windows_mut::test_windows_mut_exact_size ... ok
[INFO] [stdout] test adapters::peekable::test::test_peekable ... ok
[INFO] [stdout] test sources::windows_mut::test_array_windows_mut_mixed ... ok
[INFO] [stdout] test sources::windows_mut::test_windows_mut ... ok
[INFO] [stdout] test sources::windows_mut::test_windows_mut_rev ... ok
[INFO] [stdout] test fallible_adapters::peekable::test::test_peekable ... ok
[INFO] [stdout] test sources::windows_mut::test_windows_mut_zero_size_panics - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/fail.rs (/opt/rustwide/target/debug/deps/fail-496ccd15f99b2ecc)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]     Checking stable_try_trait_v2 v1.75.1 (/opt/rustwide/workdir/stable_try_trait_v2)
[INFO] [stderr]     Checking aliasable v0.1.3
[INFO] [stderr]     Checking maybe-dangling v0.1.2
[INFO] [stderr]     Checking fallible-iterator v0.3.0
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling lender-derive v0.1.3 (/opt/rustwide/workdir/lender-derive)
[INFO] [stderr]     Checking lender v0.6.3 (/opt/rustwide/workdir/lender)
[INFO] [stderr]     Checking lender-tests v0.0.0 (/opt/rustwide/target/tests/trybuild/lender)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.18s
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] test tests/fail/chain_invariant.rs ... ok
[INFO] [stderr] test tests/fail/chunk_invariant.rs ... ok
[INFO] [stderr] test tests/fail/chunky_invariant.rs ... ok
[INFO] [stderr] test tests/fail/convert_invariant.rs ... ok
[INFO] [stderr] test tests/fail/covariant_fallible_lend_invariant.rs ... ok
[INFO] [stderr] test tests/fail/covariant_lend_invariant.rs ... ok
[INFO] [stderr] test tests/fail/cycle_invariant.rs ... ok
[INFO] [stderr] test tests/fail/empty_invariant.rs ... ok
[INFO] [stderr] test tests/fail/enumerate_invariant.rs ... ok
[INFO] [stderr] test tests/fail/filter_invariant.rs ... ok
[INFO] [stderr] test tests/fail/filter_map_invariant.rs ... ok
[INFO] [stderr] test tests/fail/flatten_invariant.rs ... ok
[INFO] [stderr] test tests/fail/from_fn_invariant.rs ... ok
[INFO] [stderr] test tests/fail/from_iter_invariant.rs ... ok
[INFO] [stderr] test tests/fail/fuse_invariant.rs ... ok
[INFO] [stderr] test tests/fail/hrc_invariant.rs ... ok
[INFO] [stderr] test tests/fail/inspect_invariant.rs ... ok
[INFO] [stderr] test tests/fail/intersperse_invariant.rs ... ok
[INFO] [stderr] test tests/fail/into_fallible_invariant.rs ... ok
[INFO] [stderr] test tests/fail/lend_iter_invariant.rs ... ok
[INFO] [stderr] test tests/fail/lend_rejects_complex.rs ... ok
[INFO] [stderr] test tests/fail/manual_covariant_lending_invariant.rs ... mismatch
[INFO] [stderr] 
[INFO] [stderr] EXPECTED:
[INFO] [stderr] ┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈
[INFO] [stderr] error[E0053]: method `__check_covariance` has an incompatible type for trait
[INFO] [stderr]   --> tests/fail/manual_covariant_lending_invariant.rs:32:16
[INFO] [stderr]    |
[INFO] [stderr] 32 |         proof: lender::CovariantProof<&'short <Self as lender::FallibleLending<'long>>::Lend>,
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `Cell<Option<&'long String>>`, found `&'long Cell<Option<&'long String>>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected signature `fn(CovariantProof<&'long Cell<Option<&'long String>>>) -> CovariantProof<&'short Cell<Option<&'short String>>>`
[INFO] [stderr]               found signature `fn(CovariantProof<&'short &'long Cell<Option<&'long String>>>) -> CovariantProof<&'short &'short Cell<Option<&'short String>>>`
[INFO] [stderr] help: change the parameter type to match the trait
[INFO] [stderr]    |
[INFO] [stderr] 32 -         proof: lender::CovariantProof<&'short <Self as lender::FallibleLending<'long>>::Lend>,
[INFO] [stderr] 32 +         proof: CovariantProof<&'long Cell<Option<&'long String>>>,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: lifetime may not live long enough
[INFO] [stderr]   --> tests/fail/manual_covariant_lending_invariant.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn __check_covariance<'long: 'short, 'short>(
[INFO] [stderr]    |                           -----          ------ lifetime `'short` defined here
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           lifetime `'long` defined here
[INFO] [stderr] ...
[INFO] [stderr] 20 |         proof
[INFO] [stderr]    |         ^^^^^ associated function was supposed to return data with lifetime `'long` but it is returning data with lifetime `'short`
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding the following bound: `'short: 'long`
[INFO] [stderr]    = note: requirement occurs because of the type `Cell<Option<&String>>`, which makes the generic argument `Option<&String>` invariant
[INFO] [stderr]    = note: the struct `Cell<T>` is invariant over the parameter `T`
[INFO] [stderr]    = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
[INFO] [stderr] 
[INFO] [stderr] error: lifetime may not live long enough
[INFO] [stderr]   --> tests/fail/manual_covariant_lending_invariant.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn __check_covariance<'long: 'short, 'short>(
[INFO] [stderr]    |                           -----          ------ lifetime `'short` defined here
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           lifetime `'long` defined here
[INFO] [stderr] ...
[INFO] [stderr] 34 |         proof
[INFO] [stderr]    |         ^^^^^ associated function was supposed to return data with lifetime `'long` but it is returning data with lifetime `'short`
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding the following bound: `'short: 'long`
[INFO] [stderr]    = note: requirement occurs because of the type `Cell<Option<&String>>`, which makes the generic argument `Option<&String>` invariant
[INFO] [stderr]    = note: the struct `Cell<T>` is invariant over the parameter `T`
[INFO] [stderr]    = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
[INFO] [stderr] ┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈
[INFO] [stderr] 
[INFO] [stderr] ACTUAL OUTPUT:
[INFO] [stderr] ┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈
[INFO] [stderr] error[E0053]: method `__check_covariance` has an incompatible type for trait
[INFO] [stderr]   --> tests/fail/manual_covariant_lending_invariant.rs:32:16
[INFO] [stderr]    |
[INFO] [stderr] 32 |         proof: lender::CovariantProof<&'short <Self as lender::FallibleLending<'long>>::Lend>,
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `Cell<Option<&'long String>>`, found `&'long Cell<Option<&'long String>>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected signature `fn(lender::CovariantProof<&'long Cell<Option<&'long String>>>) -> lender::CovariantProof<&'short Cell<Option<&'short String>>>`
[INFO] [stderr]               found signature `fn(lender::CovariantProof<&'short &'long Cell<Option<&'long String>>>) -> lender::CovariantProof<&'short &'short Cell<Option<&'short String>>>`
[INFO] [stderr] help: change the parameter type to match the trait
[INFO] [stderr]    |
[INFO] [stderr] 32 -         proof: lender::CovariantProof<&'short <Self as lender::FallibleLending<'long>>::Lend>,
[INFO] [stderr] 32 +         proof: lender::CovariantProof<&'long Cell<Option<&'long String>>>,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: lifetime may not live long enough
[INFO] [stderr]   --> tests/fail/manual_covariant_lending_invariant.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn __check_covariance<'long: 'short, 'short>(
[INFO] [stderr]    |                           -----          ------ lifetime `'short` defined here
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           lifetime `'long` defined here
[INFO] [stderr] ...
[INFO] [stderr] 20 |         proof
[INFO] [stderr]    |         ^^^^^ associated function was supposed to return data with lifetime `'long` but it is returning data with lifetime `'short`
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding the following bound: `'short: 'long`
[INFO] [stderr]    = note: requirement occurs because of the type `Cell<Option<&String>>`, which makes the generic argument `Option<&String>` invariant
[INFO] [stderr]    = note: the struct `Cell<T>` is invariant over the parameter `T`
[INFO] [stderr]    = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
[INFO] [stderr] 
[INFO] [stderr] error: lifetime may not live long enough
[INFO] [stderr]   --> tests/fail/manual_covariant_lending_invariant.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn __check_covariance<'long: 'short, 'short>(
[INFO] [stderr]    |                           -----          ------ lifetime `'short` defined here
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           lifetime `'long` defined here
[INFO] [stderr] ...
[INFO] [stderr] 34 |         proof
[INFO] [stderr]    |         ^^^^^ associated function was supposed to return data with lifetime `'long` but it is returning data with lifetime `'short`
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding the following bound: `'short: 'long`
[INFO] [stderr]    = note: requirement occurs because of the type `Cell<Option<&String>>`, which makes the generic argument `Option<&String>` invariant
[INFO] [stderr]    = note: the struct `Cell<T>` is invariant over the parameter `T`
[INFO] [stderr]    = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
[INFO] [stderr] ┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈
[INFO] [stderr] note: If the actual output is the correct output you can bless it by rerunning
[INFO] [stderr]       your test with the environment variable TRYBUILD=overwrite
[INFO] [stderr] 
[INFO] [stderr] test tests/fail/map_bare_closure.rs ... ok
[INFO] [stderr] test tests/fail/map_err_invariant.rs ... ok
[INFO] [stderr] test tests/fail/map_invariant.rs ... ok
[INFO] [stderr] test tests/fail/map_while_invariant.rs ... ok
[INFO] [stderr] test tests/fail/might_look_covariant.rs ... ok
[INFO] [stderr] test tests/fail/mutate_invariant.rs ... ok
[INFO] [stderr] test tests/fail/once_covariant.rs ... ok
[INFO] [stderr] test tests/fail/once_invariant.rs ... ok
[INFO] [stderr] test tests/fail/once_with_invariant.rs ... ok
[INFO] [stderr] test tests/fail/peekable_escape.rs ... ok
[INFO] [stderr] test tests/fail/peekable_invariant.rs ... ok
[INFO] [stderr] test tests/fail/repeat_covariant.rs ... ok
[INFO] [stderr] test tests/fail/repeat_invariant.rs ... ok
[INFO] [stderr] test tests/fail/repeat_with_covariant.rs ... ok
[INFO] [stderr] test tests/fail/repeat_with_invariant.rs ... ok
[INFO] [stderr] test tests/fail/rev_invariant.rs ... ok
[INFO] [stderr] test tests/fail/scan_invariant.rs ... ok
[INFO] [stderr] test tests/fail/skip_invariant.rs ... ok
[INFO] [stderr] test tests/fail/skip_while_invariant.rs ... ok
[INFO] [stderr] test tests/fail/step_by_invariant.rs ... ok
[INFO] [stderr] test tests/fail/take_invariant.rs ... ok
[INFO] [stderr] test tests/fail/take_while_invariant.rs ... ok
[INFO] [stderr] test tests/fail/try_collect.rs ... ok
[INFO] [stderr] test tests/fail/windows_mut_invariant.rs ... ok
[INFO] [stderr] test tests/fail/zip_invariant.rs ... ok
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stdout] test fail ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- fail stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'fail' (42) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/trybuild-1.0.116/src/run.rs:102:13:
[INFO] [stdout] 1 of 47 tests failed
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x62e0a41b912a - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x62e0a41b912a - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x62e0a41b912a - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x62e0a41b912a - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x62e0a41cf57a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x62e0a41cf57a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x62e0a41be182 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x62e0a41be182 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x62e0a419525f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x62e0a419525f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x62e0a41b06b9 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x62e0a414a6ac - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x62e0a414a6ac - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x62e0a41b0872 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x62e0a41b0872 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x62e0a4195318 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x62e0a418c9c9 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x62e0a419602d - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x62e0a41cfe2c - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x62e0a406a6d4 - trybuild::run::<impl trybuild::Runner>::run::hb21ccd3b09113c73
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/trybuild-1.0.116/src/run.rs:102:13
[INFO] [stdout]   20:     0x62e0a4064268 - <trybuild::TestCases as core::ops::drop::Drop>::drop::h0f8157d67ad85326
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/trybuild-1.0.116/src/lib.rs:342:38
[INFO] [stdout]   21:     0x62e0a3f03b97 - core::ptr::drop_in_place<trybuild::TestCases>::hb48b39eb38d2a25b
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ptr/mod.rs:805:1
[INFO] [stdout]   22:     0x62e0a3f03e53 - fail::fail::h18b8642f0e4979cc
[INFO] [stdout]                                at /opt/rustwide/workdir/lender/tests/fail.rs:6:1
[INFO] [stdout]   23:     0x62e0a3f03e87 - fail::fail::{{closure}}::heba6d13f8b52f76b
[INFO] [stdout]                                at /opt/rustwide/workdir/lender/tests/fail.rs:3:10
[INFO] [stdout]   24:     0x62e0a3f03b36 - core::ops::function::FnOnce::call_once::h772504d16fb2590a
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x62e0a413e78b - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x62e0a413e78b - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   27:     0x62e0a414b17b - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   28:     0x62e0a414b17b - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   29:     0x62e0a414b17b - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   30:     0x62e0a414b17b - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   31:     0x62e0a414b17b - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   32:     0x62e0a414b17b - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stderr] error: test failed, to rerun pass `-p lender --test fail`
[INFO] [stdout]   33:     0x62e0a414b17b - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   34:     0x62e0a4146894 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   35:     0x62e0a4146894 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   36:     0x62e0a414dd82 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   37:     0x62e0a414dd82 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   38:     0x62e0a414dd82 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   39:     0x62e0a414dd82 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   40:     0x62e0a414dd82 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   41:     0x62e0a414dd82 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   42:     0x62e0a414dd82 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   43:     0x62e0a41b846f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   44:     0x62e0a41b846f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   45:     0x7f3139c92aa4 - <unknown>
[INFO] [stdout]   46:     0x7f3139d1fa64 - clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     fail
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 11.97s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "04b9c1fc6039896e00da344a9ae3f27fc4bf0117a54abeaf9103fafbb5210fae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04b9c1fc6039896e00da344a9ae3f27fc4bf0117a54abeaf9103fafbb5210fae", kill_on_drop: false }`
[INFO] [stdout] 04b9c1fc6039896e00da344a9ae3f27fc4bf0117a54abeaf9103fafbb5210fae
