[INFO] fetching crate you-can 0.0.14...
[INFO] testing you-can-0.0.14 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate you-can 0.0.14 into /workspace/builds/worker-1-tc2/source
[INFO] removed /workspace/builds/worker-1-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate you-can 0.0.14
[INFO] finished tweaking crates.io crate you-can 0.0.14
[INFO] tweaked toml for crates.io crate you-can 0.0.14 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate you-can 0.0.14 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 you-can 0.0.14 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-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] 433c99eacbd97a3b1b9bf6fe61339ab8abb010aefc237b68933f0ab36f5eb71d
[INFO] running `Command { std: "docker" "start" "-a" "433c99eacbd97a3b1b9bf6fe61339ab8abb010aefc237b68933f0ab36f5eb71d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "433c99eacbd97a3b1b9bf6fe61339ab8abb010aefc237b68933f0ab36f5eb71d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "433c99eacbd97a3b1b9bf6fe61339ab8abb010aefc237b68933f0ab36f5eb71d", kill_on_drop: false }`
[INFO] [stdout] 433c99eacbd97a3b1b9bf6fe61339ab8abb010aefc237b68933f0ab36f5eb71d
[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] 66b4ca9d314f994d5054dee7c7750e58aa0906bfeb251ad41de384e71c403757
[INFO] running `Command { std: "docker" "start" "-a" "66b4ca9d314f994d5054dee7c7750e58aa0906bfeb251ad41de384e71c403757", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling you-can-build-macros v0.0.14
[INFO] [stderr]    Compiling you-can v0.0.14 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.29s
[INFO] running `Command { std: "docker" "inspect" "66b4ca9d314f994d5054dee7c7750e58aa0906bfeb251ad41de384e71c403757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66b4ca9d314f994d5054dee7c7750e58aa0906bfeb251ad41de384e71c403757", kill_on_drop: false }`
[INFO] [stdout] 66b4ca9d314f994d5054dee7c7750e58aa0906bfeb251ad41de384e71c403757
[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] 87dcb6f0516ccc44988b3d6e2bb9e9229e1299937cc7a02f4a6421b0b1f196d7
[INFO] running `Command { std: "docker" "start" "-a" "87dcb6f0516ccc44988b3d6e2bb9e9229e1299937cc7a02f4a6421b0b1f196d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling libc v0.2.131
[INFO] [stderr]    Compiling serde_derive v1.0.143
[INFO] [stderr]    Compiling serde v1.0.143
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling serde_json v1.0.83
[INFO] [stderr]    Compiling anyhow v1.0.61
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling itoa v1.0.3
[INFO] [stderr]    Compiling semver v1.0.13
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling compiletest_rs v0.8.0
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling fastrand v1.8.0
[INFO] [stderr]    Compiling filetime v0.2.17
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling term v0.7.0
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]    Compiling tester v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]    Compiling you-can-build-macros v0.0.14
[INFO] [stderr]    Compiling you-can v0.0.14 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling rustfix v0.6.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> examples/in_fn.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(custom_inner_attributes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]  --> examples/in_fn.rs:9:17
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut_1 = &mut owned[0];
[INFO] [stdout]   |                 ^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> examples/in_fn.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     #![you_can::turn_off_the_borrow_checker]
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   = note: this warning originates in the attribute macro `you_can::turn_off_the_borrow_checker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  DANGER   This project is using the the #[you_can::turn_off_the_borrow_checker]
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]   --> examples/in_fn.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut_2 = &mut owned[1];
[INFO] [stdout]    |                 ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  DANGER   macro, which is inherently unsafe, unsound, and unstable. This is not
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> examples/on_block.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(stmt_expr_attributes, proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  DANGER   suitable for any purpose beyond educational experimentation.
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]  DANGER   This project is using the the #[you_can::turn_off_the_borrow_checker]
[INFO] [stderr]  DANGER   macro, which is inherently unsafe, unsound, and unstable. This is not
[INFO] [stderr]  DANGER   suitable for any purpose beyond educational experimentation.
[INFO] [stderr] 
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]  --> examples/on_block.rs:9:21
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let mut_1 = &mut owned[0];
[INFO] [stdout]   |                     ^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> examples/on_block.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     #[you_can::turn_off_the_borrow_checker]
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   = note: this warning originates in the attribute macro `you_can::turn_off_the_borrow_checker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]   --> examples/on_block.rs:10:21
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let mut_2 = &mut owned[1];
[INFO] [stdout]    |                     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]  --> examples/on_fn.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut_1 = &mut owned[0];
[INFO] [stdout]   |                 ^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> examples/on_fn.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[you_can::turn_off_the_borrow_checker]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   = note: this warning originates in the attribute macro `you_can::turn_off_the_borrow_checker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]  --> examples/on_fn.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut_2 = &mut owned[1];
[INFO] [stdout]   |                 ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr]  DANGER   This project is using the the #[you_can::turn_off_the_borrow_checker]
[INFO] [stderr]  DANGER   macro, which is inherently unsafe, unsound, and unstable. This is not
[INFO] [stderr]  DANGER   suitable for any purpose beyond educational experimentation.
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]  DANGER   This project is using the the #[you_can::turn_off_the_borrow_checker]
[INFO] [stderr]  DANGER   macro, which is inherently unsafe, unsound, and unstable. This is not
[INFO] [stderr]  DANGER   suitable for any purpose beyond educational experimentation.
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `you-can` (example "in_fn") due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> examples/on_statement.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(stmt_expr_attributes, proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  DANGER   This project is using the the #[you_can::turn_off_the_borrow_checker]
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]  --> examples/on_statement.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut_1 = &mut owned[0];
[INFO] [stdout]   |                 ^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> examples/on_statement.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     #[you_can::turn_off_the_borrow_checker]
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   = note: this warning originates in the attribute macro `you_can::turn_off_the_borrow_checker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  DANGER   macro, which is inherently unsafe, unsound, and unstable. This is not
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]  --> examples/on_statement.rs:9:17
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut_2 = &mut owned[1];
[INFO] [stdout]   |                 ^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> examples/on_statement.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     #[you_can::turn_off_the_borrow_checker]
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   = note: this warning originates in the attribute macro `you_can::turn_off_the_borrow_checker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  DANGER   suitable for any purpose beyond educational experimentation.
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> examples/in_mod.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(custom_inner_attributes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]   --> examples/in_mod.rs:10:21
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let mut_1 = &mut owned[0];
[INFO] [stdout]    |                     ^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> examples/in_mod.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout]  4 |     #![you_can::turn_off_the_borrow_checker]
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: this warning originates in the attribute macro `you_can::turn_off_the_borrow_checker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]   --> examples/in_mod.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut_2 = &mut owned[1];
[INFO] [stdout]    |                     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `you-can` (example "on_block") due to 1 previous error; 2 warnings emitted
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `you-can` (example "in_mod") due to 1 previous error; 2 warnings emitted
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `you-can` (example "on_statement") due to 1 previous error; 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]  DANGER   This project is using the the #[you_can::turn_off_the_borrow_checker]
[INFO] [stderr]  DANGER   macro, which is inherently unsafe, unsound, and unstable. This is not
[INFO] [stderr]  DANGER   suitable for any purpose beyond educational experimentation.
[INFO] [stderr] 
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]  --> examples/on_mod.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 |         let mut_1 = &mut owned[0];
[INFO] [stdout]   |                     ^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> examples/on_mod.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[you_can::turn_off_the_borrow_checker]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   = note: this warning originates in the attribute macro `you_can::turn_off_the_borrow_checker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]  --> examples/on_mod.rs:8:21
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut_2 = &mut owned[1];
[INFO] [stdout]   |                     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "87dcb6f0516ccc44988b3d6e2bb9e9229e1299937cc7a02f4a6421b0b1f196d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87dcb6f0516ccc44988b3d6e2bb9e9229e1299937cc7a02f4a6421b0b1f196d7", kill_on_drop: false }`
[INFO] [stdout] 87dcb6f0516ccc44988b3d6e2bb9e9229e1299937cc7a02f4a6421b0b1f196d7
