[INFO] fetching crate syn-args 0.4.1... [INFO] checking syn-args-0.4.1 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1 [INFO] extracting crate syn-args 0.4.1 into /workspace/builds/worker-6-tc2/source [INFO] started tweaking crates.io crate syn-args 0.4.1 [INFO] removed 0 missing examples [INFO] finished tweaking crates.io crate syn-args 0.4.1 [INFO] tweaked toml for crates.io crate syn-args 0.4.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate syn-args 0.4.1 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate syn-args 0.4.1 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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a8ee92b7f1af237428e5c63088bf3ac6a8a71b7969e5a71c59162c0cdf6b2848 [INFO] running `Command { std: "docker" "start" "-a" "a8ee92b7f1af237428e5c63088bf3ac6a8a71b7969e5a71c59162c0cdf6b2848", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a8ee92b7f1af237428e5c63088bf3ac6a8a71b7969e5a71c59162c0cdf6b2848", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a8ee92b7f1af237428e5c63088bf3ac6a8a71b7969e5a71c59162c0cdf6b2848", kill_on_drop: false }` [INFO] [stdout] a8ee92b7f1af237428e5c63088bf3ac6a8a71b7969e5a71c59162c0cdf6b2848 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 94b7f2d3f72e6dd6de1d3b7bdf7ff305a9f66bcc2f8c5619d3c64a6e050cffab [INFO] running `Command { std: "docker" "start" "-a" "94b7f2d3f72e6dd6de1d3b7bdf7ff305a9f66bcc2f8c5619d3c64a6e050cffab", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.86 [INFO] [stderr] Checking unicode-ident v1.0.12 [INFO] [stderr] Compiling once_cell v1.19.0 [INFO] [stderr] Checking quote v1.0.37 [INFO] [stderr] Checking syn v2.0.87 [INFO] [stderr] Compiling syn-args-derive v0.3.1 [INFO] [stderr] Checking syn-args v0.4.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `value` [INFO] [stdout] --> src/macro_args/def/extends.rs:24:17 [INFO] [stdout] | [INFO] [stdout] 24 | fn try_from(value: &Value) -> Result { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_value` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `value` [INFO] [stdout] --> src/macro_args/def/extends.rs:24:17 [INFO] [stdout] | [INFO] [stdout] 24 | fn try_from(value: &Value) -> Result { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_value` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `args` [INFO] [stdout] --> src/lib.rs:39:33 [INFO] [stdout] | [INFO] [stdout] 39 | if let Value::Array(args) = v { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_args` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `err` is never read [INFO] [stdout] --> src/lib.rs:42:31 [INFO] [stdout] | [INFO] [stdout] 42 | Err(e) => err = e, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `err` is never read [INFO] [stdout] --> src/lib.rs:47:31 [INFO] [stdout] | [INFO] [stdout] 47 | Err(e) => err = e, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `err` is never read [INFO] [stdout] --> src/lib.rs:52:31 [INFO] [stdout] | [INFO] [stdout] 52 | Err(e) => err = e, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `err` is never read [INFO] [stdout] --> src/lib.rs:57:31 [INFO] [stdout] | [INFO] [stdout] 57 | Err(e) => err = e, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `err` is never read [INFO] [stdout] --> src/lib.rs:62:31 [INFO] [stdout] | [INFO] [stdout] 62 | Err(e) => err = e, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `err` is never read [INFO] [stdout] --> src/lib.rs:67:31 [INFO] [stdout] | [INFO] [stdout] 67 | Err(e) => err = e, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `err` is never read [INFO] [stdout] --> src/lib.rs:72:31 [INFO] [stdout] | [INFO] [stdout] 72 | Err(e) => err = e, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `err` is never read [INFO] [stdout] --> src/lib.rs:77:31 [INFO] [stdout] | [INFO] [stdout] 77 | Err(e) => err = e, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: attributes on expressions are experimental [INFO] [stdout] --> examples/test-expand.rs:493:13 [INFO] [stdout] | [INFO] [stdout] 493 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #15701 for more information [INFO] [stdout] = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: attributes on expressions are experimental [INFO] [stdout] --> examples/test-expand.rs:514:17 [INFO] [stdout] | [INFO] [stdout] 514 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #15701 for more information [INFO] [stdout] = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: attributes on expressions are experimental [INFO] [stdout] --> examples/test-expand.rs:537:13 [INFO] [stdout] | [INFO] [stdout] 537 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #15701 for more information [INFO] [stdout] = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: attributes on expressions are experimental [INFO] [stdout] --> examples/test-expand.rs:574:13 [INFO] [stdout] | [INFO] [stdout] 574 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #15701 for more information [INFO] [stdout] = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: attributes on expressions are experimental [INFO] [stdout] --> examples/test-expand.rs:611:13 [INFO] [stdout] | [INFO] [stdout] 611 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #15701 for more information [INFO] [stdout] = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: attributes on expressions are experimental [INFO] [stdout] --> examples/test-expand.rs:677:17 [INFO] [stdout] | [INFO] [stdout] 677 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #15701 for more information [INFO] [stdout] = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: attributes on expressions are experimental [INFO] [stdout] --> examples/test-expand.rs:711:13 [INFO] [stdout] | [INFO] [stdout] 711 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #15701 for more information [INFO] [stdout] = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: attributes on expressions are experimental [INFO] [stdout] --> examples/test-expand.rs:744:17 [INFO] [stdout] | [INFO] [stdout] 744 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #15701 for more information [INFO] [stdout] = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `T1` is more private than the item `ModuleArgs::F8::0` [INFO] [stdout] --> src/lib.rs:32:12 [INFO] [stdout] | [INFO] [stdout] 32 | F8(def::Option), [INFO] [stdout] | ^^^^^^^^^^^^^^^ field `ModuleArgs::F8::0` is reachable at visibility `pub(crate)` [INFO] [stdout] | [INFO] [stdout] note: but type `T1` is only usable at visibility `pub(self)` [INFO] [stdout] --> src/lib.rs:266:5 [INFO] [stdout] | [INFO] [stdout] 266 | struct T1 { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] = note: `#[warn(private_interfaces)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `test_value_p1` is never used [INFO] [stdout] --> src/lib.rs:463:8 [INFO] [stdout] | [INFO] [stdout] 463 | fn test_value_p1() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler [INFO] [stdout] --> examples/test-expand.rs:493:15 [INFO] [stdout] | [INFO] [stdout] 493 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler [INFO] [stdout] --> examples/test-expand.rs:514:19 [INFO] [stdout] | [INFO] [stdout] 514 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler [INFO] [stdout] --> examples/test-expand.rs:537:15 [INFO] [stdout] | [INFO] [stdout] 537 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: attributes on expressions are experimental [INFO] [stdout] --> examples/test-expand.rs:541:25 [INFO] [stdout] | [INFO] [stdout] 541 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #15701 for more information [INFO] [stdout] = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: attributes on expressions are experimental [INFO] [stdout] --> examples/test-expand.rs:549:25 [INFO] [stdout] | [INFO] [stdout] 549 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #15701 for more information [INFO] [stdout] = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler [INFO] [stdout] --> examples/test-expand.rs:541:27 [INFO] [stdout] | [INFO] [stdout] 541 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler [INFO] [stdout] --> examples/test-expand.rs:549:27 [INFO] [stdout] | [INFO] [stdout] 549 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler [INFO] [stdout] --> examples/test-expand.rs:574:15 [INFO] [stdout] | [INFO] [stdout] 574 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: attributes on expressions are experimental [INFO] [stdout] --> examples/test-expand.rs:578:25 [INFO] [stdout] | [INFO] [stdout] 578 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #15701 for more information [INFO] [stdout] = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: attributes on expressions are experimental [INFO] [stdout] --> examples/test-expand.rs:586:25 [INFO] [stdout] | [INFO] [stdout] 586 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #15701 for more information [INFO] [stdout] = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler [INFO] [stdout] --> examples/test-expand.rs:578:27 [INFO] [stdout] | [INFO] [stdout] 578 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler [INFO] [stdout] --> examples/test-expand.rs:586:27 [INFO] [stdout] | [INFO] [stdout] 586 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler [INFO] [stdout] --> examples/test-expand.rs:611:15 [INFO] [stdout] | [INFO] [stdout] 611 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: attributes on expressions are experimental [INFO] [stdout] --> examples/test-expand.rs:615:25 [INFO] [stdout] | [INFO] [stdout] 615 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #15701 for more information [INFO] [stdout] = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: attributes on expressions are experimental [INFO] [stdout] --> examples/test-expand.rs:623:25 [INFO] [stdout] | [INFO] [stdout] 623 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #15701 for more information [INFO] [stdout] = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler [INFO] [stdout] --> examples/test-expand.rs:615:27 [INFO] [stdout] | [INFO] [stdout] 615 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler [INFO] [stdout] --> examples/test-expand.rs:623:27 [INFO] [stdout] | [INFO] [stdout] 623 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler [INFO] [stdout] --> examples/test-expand.rs:677:19 [INFO] [stdout] | [INFO] [stdout] 677 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler [INFO] [stdout] --> examples/test-expand.rs:711:15 [INFO] [stdout] | [INFO] [stdout] 711 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: attributes on expressions are experimental [INFO] [stdout] --> examples/test-expand.rs:716:25 [INFO] [stdout] | [INFO] [stdout] 716 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #15701 for more information [INFO] [stdout] = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler [INFO] [stdout] --> examples/test-expand.rs:716:27 [INFO] [stdout] | [INFO] [stdout] 716 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler [INFO] [stdout] --> examples/test-expand.rs:744:19 [INFO] [stdout] | [INFO] [stdout] 744 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `rustc_box` in this scope [INFO] [stdout] --> examples/test-expand.rs:493:15 [INFO] [stdout] | [INFO] [stdout] 493 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_abi` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `rustc_box` in this scope [INFO] [stdout] --> examples/test-expand.rs:514:19 [INFO] [stdout] | [INFO] [stdout] 514 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_abi` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `rustc_box` in this scope [INFO] [stdout] --> examples/test-expand.rs:537:15 [INFO] [stdout] | [INFO] [stdout] 537 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_abi` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `rustc_box` in this scope [INFO] [stdout] --> examples/test-expand.rs:541:27 [INFO] [stdout] | [INFO] [stdout] 541 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_abi` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `rustc_box` in this scope [INFO] [stdout] --> examples/test-expand.rs:549:27 [INFO] [stdout] | [INFO] [stdout] 549 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_abi` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `rustc_box` in this scope [INFO] [stdout] --> examples/test-expand.rs:574:15 [INFO] [stdout] | [INFO] [stdout] 574 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_abi` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `rustc_box` in this scope [INFO] [stdout] --> examples/test-expand.rs:578:27 [INFO] [stdout] | [INFO] [stdout] 578 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_abi` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `rustc_box` in this scope [INFO] [stdout] --> examples/test-expand.rs:586:27 [INFO] [stdout] | [INFO] [stdout] 586 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_abi` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `rustc_box` in this scope [INFO] [stdout] --> examples/test-expand.rs:611:15 [INFO] [stdout] | [INFO] [stdout] 611 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_abi` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `rustc_box` in this scope [INFO] [stdout] --> examples/test-expand.rs:615:27 [INFO] [stdout] | [INFO] [stdout] 615 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_abi` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `rustc_box` in this scope [INFO] [stdout] --> examples/test-expand.rs:623:27 [INFO] [stdout] | [INFO] [stdout] 623 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_abi` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `rustc_box` in this scope [INFO] [stdout] --> examples/test-expand.rs:677:19 [INFO] [stdout] | [INFO] [stdout] 677 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_abi` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `rustc_box` in this scope [INFO] [stdout] --> examples/test-expand.rs:711:15 [INFO] [stdout] | [INFO] [stdout] 711 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_abi` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `rustc_box` in this scope [INFO] [stdout] --> examples/test-expand.rs:716:27 [INFO] [stdout] | [INFO] [stdout] 716 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_abi` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `rustc_box` in this scope [INFO] [stdout] --> examples/test-expand.rs:744:19 [INFO] [stdout] | [INFO] [stdout] 744 | #[rustc_box] [INFO] [stdout] | ^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_abi` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `T1` is more private than the item `ModuleArgs::F8::0` [INFO] [stdout] --> examples/test.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 12 | F8(def::Option), [INFO] [stdout] | ^^^^^^^^^^^^^^^ field `ModuleArgs::F8::0` is reachable at visibility `pub` [INFO] [stdout] | [INFO] [stdout] note: but type `T1` is only usable at visibility `pub(crate)` [INFO] [stdout] --> examples/test.rs:34:1 [INFO] [stdout] | [INFO] [stdout] 34 | struct T1 { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] = note: `#[warn(private_interfaces)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `test_value_p1` is never used [INFO] [stdout] --> examples/test.rs:189:4 [INFO] [stdout] | [INFO] [stdout] 189 | fn test_value_p1() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0658`. [INFO] [stdout] [INFO] [stderr] error: could not compile `syn-args` (example "test-expand") due to 45 previous errors [INFO] running `Command { std: "docker" "inspect" "94b7f2d3f72e6dd6de1d3b7bdf7ff305a9f66bcc2f8c5619d3c64a6e050cffab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "94b7f2d3f72e6dd6de1d3b7bdf7ff305a9f66bcc2f8c5619d3c64a6e050cffab", kill_on_drop: false }` [INFO] [stdout] 94b7f2d3f72e6dd6de1d3b7bdf7ff305a9f66bcc2f8c5619d3c64a6e050cffab