[INFO] fetching crate cex_derive 0.5.2... [INFO] testing cex_derive-0.5.2 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1 [INFO] extracting crate cex_derive 0.5.2 into /workspace/builds/worker-2-tc2/source [INFO] started tweaking crates.io crate cex_derive 0.5.2 [INFO] finished tweaking crates.io crate cex_derive 0.5.2 [INFO] tweaked toml for crates.io crate cex_derive 0.5.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate cex_derive 0.5.2 on toolchain b83b707f97d809763b7861afa7638871f3339a33 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "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" "+b83b707f97d809763b7861afa7638871f3339a33" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 7 packages to latest compatible versions [INFO] [stderr] Adding indexmap v1.9.3 (available: v2.11.0) [INFO] [stderr] Adding syn v1.0.109 (available: v2.0.106) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e319f5e27f53312d371087fcc20fb8318b9bceb6452cec81948d8d9167439ba4 [INFO] running `Command { std: "docker" "start" "-a" "e319f5e27f53312d371087fcc20fb8318b9bceb6452cec81948d8d9167439ba4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e319f5e27f53312d371087fcc20fb8318b9bceb6452cec81948d8d9167439ba4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e319f5e27f53312d371087fcc20fb8318b9bceb6452cec81948d8d9167439ba4", kill_on_drop: false }` [INFO] [stdout] e319f5e27f53312d371087fcc20fb8318b9bceb6452cec81948d8d9167439ba4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a3921afdbb9d436c9600b056c00053172adddf88fa16cd2d62c539ee2f917b65 [INFO] running `Command { std: "docker" "start" "-a" "a3921afdbb9d436c9600b056c00053172adddf88fa16cd2d62c539ee2f917b65", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling indexmap v1.9.3 [INFO] [stderr] Compiling cex_derive v0.5.2 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.96s [INFO] running `Command { std: "docker" "inspect" "a3921afdbb9d436c9600b056c00053172adddf88fa16cd2d62c539ee2f917b65", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a3921afdbb9d436c9600b056c00053172adddf88fa16cd2d62c539ee2f917b65", kill_on_drop: false }` [INFO] [stdout] a3921afdbb9d436c9600b056c00053172adddf88fa16cd2d62c539ee2f917b65 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8298b336668b0fc54bfdd4b77771472a2faa3c90ded5766bdc8d5675cee11cab [INFO] running `Command { std: "docker" "start" "-a" "8298b336668b0fc54bfdd4b77771472a2faa3c90ded5766bdc8d5675cee11cab", kill_on_drop: false }` [INFO] [stderr] Compiling cex_derive v0.5.2 (/opt/rustwide/workdir) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 1.22s [INFO] running `Command { std: "docker" "inspect" "8298b336668b0fc54bfdd4b77771472a2faa3c90ded5766bdc8d5675cee11cab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8298b336668b0fc54bfdd4b77771472a2faa3c90ded5766bdc8d5675cee11cab", kill_on_drop: false }` [INFO] [stdout] 8298b336668b0fc54bfdd4b77771472a2faa3c90ded5766bdc8d5675cee11cab [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 12155aa5b25bb77604942dec59cf0c0d05f546bbe94ef8d8d8353b001a5b9b02 [INFO] running `Command { std: "docker" "start" "-a" "12155aa5b25bb77604942dec59cf0c0d05f546bbe94ef8d8d8353b001a5b9b02", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/cex_derive-8bb4de9dee17f4c6) [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] [stderr] Doc-tests cex_derive [INFO] [stdout] [INFO] [stdout] running 3 tests [INFO] [stdout] test src/lib.rs - Result (line 639) - compile ... FAILED [INFO] [stdout] test src/lib.rs - Result (line 629) - compile ... FAILED [INFO] [stdout] test src/lib.rs - Result (line 647) - compile ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/lib.rs - Result (line 639) stdout ---- [INFO] [stdout] error: expected `;`, found `}` [INFO] [stdout] --> src/lib.rs:641:62 [INFO] [stdout] | [INFO] [stdout] 4 | let _f = #[cex] || -> Result!( i32 throws String ) {/**/} [INFO] [stdout] | ^ help: add `;` here [INFO] [stdout] 5 | } [INFO] [stdout] | - unexpected token [INFO] [stdout] [INFO] [stdout] error[E0658]: attributes on expressions are experimental [INFO] [stdout] --> src/lib.rs:641:14 [INFO] [stdout] | [INFO] [stdout] 4 | let _f = #[cex] || -> Result!( i32 throws String ) {/**/} [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 2025-08-28; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `cex` in this scope [INFO] [stdout] --> src/lib.rs:641:16 [INFO] [stdout] | [INFO] [stdout] 4 | let _f = #[cex] || -> Result!( i32 throws String ) {/**/} [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] help: consider importing this attribute macro [INFO] [stdout] | [INFO] [stdout] 2 + use cex_derive::cex; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error: cannot find macro `Result` in this scope [INFO] [stdout] --> src/lib.rs:641:27 [INFO] [stdout] | [INFO] [stdout] 4 | let _f = #[cex] || -> Result!( i32 throws String ) {/**/} [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Result` is in scope, but it is an enum, not a macro [INFO] [stdout] help: consider importing this macro [INFO] [stdout] | [INFO] [stdout] 2 + use cex_derive::Result; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error: aborting due to 4 previous errors [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0658`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] ---- src/lib.rs - Result (line 629) stdout ---- [INFO] [stdout] error: cannot find attribute `cex` in this scope [INFO] [stdout] --> src/lib.rs:634:3 [INFO] [stdout] | [INFO] [stdout] 7 | #[cex] fn foo() -> Result!( i32 throws String, &'static str, SomeError ) {/**/} [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] help: consider importing this attribute macro [INFO] [stdout] | [INFO] [stdout] 2 + use cex_derive::cex; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error: cannot find macro `Result` in this scope [INFO] [stdout] --> src/lib.rs:634:20 [INFO] [stdout] | [INFO] [stdout] 7 | #[cex] fn foo() -> Result!( i32 throws String, &'static str, SomeError ) {/**/} [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Result` is in scope, but it is an enum, not a macro [INFO] [stdout] help: consider importing this macro [INFO] [stdout] | [INFO] [stdout] 2 + use cex_derive::Result; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `cex` in this scope [INFO] [stdout] --> src/lib.rs:630:3 [INFO] [stdout] | [INFO] [stdout] 3 | #[cex] fn throws_never() -> Result!(i32) {/**/} [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] help: consider importing this attribute macro [INFO] [stdout] | [INFO] [stdout] 2 + use cex_derive::cex; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error: cannot find macro `Result` in this scope [INFO] [stdout] --> src/lib.rs:630:29 [INFO] [stdout] | [INFO] [stdout] 3 | #[cex] fn throws_never() -> Result!(i32) {/**/} [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Result` is in scope, but it is an enum, not a macro [INFO] [stdout] help: consider importing this macro [INFO] [stdout] | [INFO] [stdout] 2 + use cex_derive::Result; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error: aborting due to 4 previous errors [INFO] [stdout] [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] ---- src/lib.rs - Result (line 647) stdout ---- [INFO] [stdout] error: cannot find attribute `cex` in this scope [INFO] [stdout] --> src/lib.rs:649:7 [INFO] [stdout] | [INFO] [stdout] 4 | #[cex] let v: Result!( i32 throws String ) = try {/**/}; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] help: consider importing this attribute macro [INFO] [stdout] | [INFO] [stdout] 2 + use cex_derive::cex; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error: cannot find macro `Result` in this scope [INFO] [stdout] --> src/lib.rs:649:19 [INFO] [stdout] | [INFO] [stdout] 4 | #[cex] let v: Result!( i32 throws String ) = try {/**/}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Result` is in scope, but it is an enum, not a macro [INFO] [stdout] help: consider importing this macro [INFO] [stdout] | [INFO] [stdout] 2 + use cex_derive::Result; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error[E0658]: `try` expression is experimental [INFO] [stdout] --> src/lib.rs:649:50 [INFO] [stdout] | [INFO] [stdout] 4 | #[cex] let v: Result!( i32 throws String ) = try {/**/}; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #31436 for more information [INFO] [stdout] = help: add `#![feature(try_blocks)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-28; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] error[E0277]: a `try` block must return `Result` or `Option` (or another type that implements `Try`) [INFO] [stdout] --> src/lib.rs:649:59 [INFO] [stdout] | [INFO] [stdout] 4 | #[cex] let v: Result!( i32 throws String ) = try {/**/}; [INFO] [stdout] | ^ could not wrap the final value of the block as `()` doesn't implement `Try` [INFO] [stdout] | [INFO] [stdout] = help: the trait `Try` is not implemented for `()` [INFO] [stdout] [INFO] [stdout] error: aborting due to 4 previous errors [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0277, E0658. [INFO] [stdout] For more information about an error, try `rustc --explain E0277`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] src/lib.rs - Result (line 629) [INFO] [stdout] src/lib.rs - Result (line 639) [INFO] [stdout] src/lib.rs - Result (line 647) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 3 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.17s [INFO] [stdout] [INFO] [stderr] error: doctest failed, to rerun pass `--doc` [INFO] running `Command { std: "docker" "inspect" "12155aa5b25bb77604942dec59cf0c0d05f546bbe94ef8d8d8353b001a5b9b02", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "12155aa5b25bb77604942dec59cf0c0d05f546bbe94ef8d8d8353b001a5b9b02", kill_on_drop: false }` [INFO] [stdout] 12155aa5b25bb77604942dec59cf0c0d05f546bbe94ef8d8d8353b001a5b9b02