[INFO] fetching crate fnerror 0.1.4... [INFO] testing fnerror-0.1.4 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1 [INFO] extracting crate fnerror 0.1.4 into /workspace/builds/worker-3-tc2/source [INFO] started tweaking crates.io crate fnerror 0.1.4 [INFO] finished tweaking crates.io crate fnerror 0.1.4 [INFO] tweaked toml for crates.io crate fnerror 0.1.4 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate fnerror 0.1.4 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate fnerror 0.1.4 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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ca7e17b9fc5ac57b9d3272267a380a98f807b206ae65d086212c0cba98f77443 [INFO] running `Command { std: "docker" "start" "-a" "ca7e17b9fc5ac57b9d3272267a380a98f807b206ae65d086212c0cba98f77443", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ca7e17b9fc5ac57b9d3272267a380a98f807b206ae65d086212c0cba98f77443", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ca7e17b9fc5ac57b9d3272267a380a98f807b206ae65d086212c0cba98f77443", kill_on_drop: false }` [INFO] [stdout] ca7e17b9fc5ac57b9d3272267a380a98f807b206ae65d086212c0cba98f77443 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6be687236909540d5b3f23ddf9b4ea513cb8990dd1d1ff659ccdf01c5d1f7452 [INFO] running `Command { std: "docker" "start" "-a" "6be687236909540d5b3f23ddf9b4ea513cb8990dd1d1ff659ccdf01c5d1f7452", kill_on_drop: false }` [INFO] [stderr] Compiling syn v2.0.106 [INFO] [stderr] Compiling Inflector v0.11.4 [INFO] [stderr] Compiling fnerror v0.1.4 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.02s [INFO] running `Command { std: "docker" "inspect" "6be687236909540d5b3f23ddf9b4ea513cb8990dd1d1ff659ccdf01c5d1f7452", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6be687236909540d5b3f23ddf9b4ea513cb8990dd1d1ff659ccdf01c5d1f7452", kill_on_drop: false }` [INFO] [stdout] 6be687236909540d5b3f23ddf9b4ea513cb8990dd1d1ff659ccdf01c5d1f7452 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f53e9ed9ee6244a0e46e12afed75d3797b84c3bc3a3f7f5022cb7d1245e45aab [INFO] running `Command { std: "docker" "start" "-a" "f53e9ed9ee6244a0e46e12afed75d3797b84c3bc3a3f7f5022cb7d1245e45aab", kill_on_drop: false }` [INFO] [stderr] Compiling fnerror v0.1.4 (/opt/rustwide/workdir) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.74s [INFO] running `Command { std: "docker" "inspect" "f53e9ed9ee6244a0e46e12afed75d3797b84c3bc3a3f7f5022cb7d1245e45aab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f53e9ed9ee6244a0e46e12afed75d3797b84c3bc3a3f7f5022cb7d1245e45aab", kill_on_drop: false }` [INFO] [stdout] f53e9ed9ee6244a0e46e12afed75d3797b84c3bc3a3f7f5022cb7d1245e45aab [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] fe083c8ea89be071496e60cf7bf49899b89a2fa92a472d2f3d983f2df18fd472 [INFO] running `Command { std: "docker" "start" "-a" "fe083c8ea89be071496e60cf7bf49899b89a2fa92a472d2f3d983f2df18fd472", 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/fnerror-51eba6800dbc2be8) [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 fnerror [INFO] [stdout] [INFO] [stdout] running 2 tests [INFO] [stdout] test src/lib.rs - fnerror (line 22) ... FAILED [INFO] [stdout] test src/lib.rs - fnerror (line 47) ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/lib.rs - fnerror (line 22) stdout ---- [INFO] [stdout] error[E0658]: attributes on expressions are experimental [INFO] [stdout] --> src/lib.rs:27:9 [INFO] [stdout] | [INFO] [stdout] 8 | #[fnerr] [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 2025-08-13; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] error[E0658]: attributes on expressions are experimental [INFO] [stdout] --> src/lib.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 12 | #[fnerr] [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 2025-08-13; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `fnerror` in this scope [INFO] [stdout] --> src/lib.rs:24:3 [INFO] [stdout] | [INFO] [stdout] 5 | #[fnerror] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `fnerror` is imported here, but it is a crate, not an attribute [INFO] [stdout] --> src/lib.rs:22:1 [INFO] [stdout] | [INFO] [stdout] 3 | extern crate r#fnerror; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] help: consider importing this attribute macro [INFO] [stdout] | [INFO] [stdout] 2 + use fnerror::fnerror; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `fnerr` in this scope [INFO] [stdout] --> src/lib.rs:27:11 [INFO] [stdout] | [INFO] [stdout] 8 | #[fnerr] [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `fnerr` in this scope [INFO] [stdout] --> src/lib.rs:31:11 [INFO] [stdout] | [INFO] [stdout] 12 | #[fnerr] [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] error[E0412]: cannot find type `MyError` in this scope [INFO] [stdout] --> src/lib.rs:25:24 [INFO] [stdout] | [INFO] [stdout] 6 | fn foo() -> Result<(), MyError> { [INFO] [stdout] | ^^^^^^^ not found in this scope [INFO] [stdout] | [INFO] [stdout] help: you might be missing a type parameter [INFO] [stdout] | [INFO] [stdout] 6 | fn foo() -> Result<(), MyError> { [INFO] [stdout] | +++++++++ [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find function, tuple struct or tuple variant `Error2` in this scope [INFO] [stdout] --> src/lib.rs:28:9 [INFO] [stdout] | [INFO] [stdout] 9 | Error2("{}", e as String) [INFO] [stdout] | ^^^^^^ not found in this scope [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find function, tuple struct or tuple variant `Error3` in this scope [INFO] [stdout] --> src/lib.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 13 | Error3("{}, {}", e as &'static str, 123 as u8) [INFO] [stdout] | ^^^^^^ not found in this scope [INFO] [stdout] [INFO] [stdout] error: aborting due to 8 previous errors [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0412, E0425, E0658. [INFO] [stdout] For more information about an error, try `rustc --explain E0412`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] ---- src/lib.rs - fnerror (line 47) stdout ---- [INFO] [stdout] error[E0433]: failed to resolve: could not find `thiserror` in the list of imported crates [INFO] [stdout] --> src/lib.rs:53:19 [INFO] [stdout] | [INFO] [stdout] 8 | #[derive(Debug, ::thiserror::Error)] [INFO] [stdout] | ^^^^^^^^^ could not find `thiserror` in the list of imported crates [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `error` in this scope [INFO] [stdout] --> src/lib.rs:55:7 [INFO] [stdout] | [INFO] [stdout] 10 | #[error("{}", 0usize)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `error` in this scope [INFO] [stdout] --> src/lib.rs:57:7 [INFO] [stdout] | [INFO] [stdout] 12 | #[error("{}, {}",0usize, 1usize)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find function `bar` in this scope [INFO] [stdout] --> src/lib.rs:49:5 [INFO] [stdout] | [INFO] [stdout] 4 | bar().map_err(|e| MyError::Error2(e))?; [INFO] [stdout] | ^^^ not found in this scope [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find function `baz` in this scope [INFO] [stdout] --> src/lib.rs:50:5 [INFO] [stdout] | [INFO] [stdout] 5 | baz().map_err(|e| MyError::Error3(e, 123))?; [INFO] [stdout] | ^^^ not found in this scope [INFO] [stdout] [INFO] [stdout] error: aborting due to 5 previous errors [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0425, E0433. [INFO] [stdout] For more information about an error, try `rustc --explain E0425`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] src/lib.rs - fnerror (line 22) [INFO] [stdout] src/lib.rs - fnerror (line 47) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.22s [INFO] [stdout] [INFO] [stdout] all doctests ran in 0.41s; merged doctests compilation took 0.19s [INFO] [stderr] error: doctest failed, to rerun pass `--doc` [INFO] running `Command { std: "docker" "inspect" "fe083c8ea89be071496e60cf7bf49899b89a2fa92a472d2f3d983f2df18fd472", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fe083c8ea89be071496e60cf7bf49899b89a2fa92a472d2f3d983f2df18fd472", kill_on_drop: false }` [INFO] [stdout] fe083c8ea89be071496e60cf7bf49899b89a2fa92a472d2f3d983f2df18fd472