[INFO] fetching crate match_err 0.1.9... [INFO] testing match_err-0.1.9 against beta-2025-10-28 for beta-1.92-2 [INFO] extracting crate match_err 0.1.9 into /workspace/builds/worker-6-tc2/source [INFO] started tweaking crates.io crate match_err 0.1.9 [INFO] finished tweaking crates.io crate match_err 0.1.9 [INFO] tweaked toml for crates.io crate match_err 0.1.9 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate match_err 0.1.9 on toolchain beta-2025-10-28 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "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-2025-10-28" "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 thiserror v1.0.69 (available: v2.0.17) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 34d24dd0756c250479547cdbc13ca900965407e34e3ead169b9f6560c41a5280 [INFO] running `Command { std: "docker" "start" "-a" "34d24dd0756c250479547cdbc13ca900965407e34e3ead169b9f6560c41a5280", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "34d24dd0756c250479547cdbc13ca900965407e34e3ead169b9f6560c41a5280", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "34d24dd0756c250479547cdbc13ca900965407e34e3ead169b9f6560c41a5280", kill_on_drop: false }` [INFO] [stdout] 34d24dd0756c250479547cdbc13ca900965407e34e3ead169b9f6560c41a5280 [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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e3dae62cdcff72b1a85aef83f3d3e43cbac968efb10e4022e88467feece2e324 [INFO] running `Command { std: "docker" "start" "-a" "e3dae62cdcff72b1a85aef83f3d3e43cbac968efb10e4022e88467feece2e324", kill_on_drop: false }` [INFO] [stderr] Compiling match_err v0.1.9 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s [INFO] running `Command { std: "docker" "inspect" "e3dae62cdcff72b1a85aef83f3d3e43cbac968efb10e4022e88467feece2e324", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e3dae62cdcff72b1a85aef83f3d3e43cbac968efb10e4022e88467feece2e324", kill_on_drop: false }` [INFO] [stdout] e3dae62cdcff72b1a85aef83f3d3e43cbac968efb10e4022e88467feece2e324 [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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 38608bae7e9cedbb78ad33f1de7eb9735a680a245dae313d317ad02017593ccd [INFO] running `Command { std: "docker" "start" "-a" "38608bae7e9cedbb78ad33f1de7eb9735a680a245dae313d317ad02017593ccd", kill_on_drop: false }` [INFO] [stderr] Compiling syn v2.0.108 [INFO] [stderr] Compiling thiserror-impl v1.0.69 [INFO] [stderr] Compiling thiserror v1.0.69 [INFO] [stderr] Compiling match_err v0.1.9 (/opt/rustwide/workdir) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 3.86s [INFO] running `Command { std: "docker" "inspect" "38608bae7e9cedbb78ad33f1de7eb9735a680a245dae313d317ad02017593ccd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "38608bae7e9cedbb78ad33f1de7eb9735a680a245dae313d317ad02017593ccd", kill_on_drop: false }` [INFO] [stdout] 38608bae7e9cedbb78ad33f1de7eb9735a680a245dae313d317ad02017593ccd [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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 77c37cc830f307462acad1c2d927b5d04cc294128795fe3076723d6c83c92799 [INFO] running `Command { std: "docker" "start" "-a" "77c37cc830f307462acad1c2d927b5d04cc294128795fe3076723d6c83c92799", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/match_err-49622bd5099e0318) [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 match_err [INFO] [stdout] [INFO] [stdout] running 6 tests [INFO] [stdout] test src/lib.rs - (line 6) ... FAILED [INFO] [stdout] test src/lib.rs - assert_error (line 178) ... ok [INFO] [stdout] test src/lib.rs - match_if_err (line 95) ... ok [INFO] [stdout] test src/lib.rs - match_err (line 43) ... ok [INFO] [stdout] test src/lib.rs - (line 18) ... ok [INFO] [stdout] test src/lib.rs - assert_if_error (line 143) ... ok [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/lib.rs - (line 6) stdout ---- [INFO] [stdout] error: unexpected `...` [INFO] [stdout] --> src/lib.rs:10:13 [INFO] [stdout] | [INFO] [stdout] 6 | ... [INFO] [stdout] | ^^^ not a valid pattern [INFO] [stdout] | [INFO] [stdout] help: for a rest pattern, use `..` instead of `...` [INFO] [stdout] | [INFO] [stdout] 6 - ... [INFO] [stdout] 6 + .. [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find value `err` in this scope [INFO] [stdout] --> src/lib.rs:7:17 [INFO] [stdout] | [INFO] [stdout] 3 | if let Err(e) = err { [INFO] [stdout] | ^^^ help: a tuple variant with a similar name exists: `Err` [INFO] [stdout] | [INFO] [stdout] --> /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/result.rs:566:5 [INFO] [stdout] | [INFO] [stdout] = note: similarly named tuple variant `Err` defined here [INFO] [stdout] [INFO] [stdout] error[E0412]: cannot find type `Error` in this scope [INFO] [stdout] --> src/lib.rs:8:39 [INFO] [stdout] | [INFO] [stdout] 4 | if let Some(e) = e.downcast_ref::() { [INFO] [stdout] | ^^^^^ not found in this scope [INFO] [stdout] | [INFO] [stdout] help: consider importing one of these items [INFO] [stdout] | [INFO] [stdout] 2 + use std::error::Error; [INFO] [stdout] | [INFO] [stdout] 2 + use std::fmt::Error; [INFO] [stdout] | [INFO] [stdout] 2 + use std::io::Error; [INFO] [stdout] | [INFO] [stdout] 2 + use core::error::Error; [INFO] [stdout] | [INFO] [stdout] = and 2 other candidates [INFO] [stdout] [INFO] [stdout] error: `match` arm with no body [INFO] [stdout] --> src/lib.rs:10:13 [INFO] [stdout] | [INFO] [stdout] 6 | ... [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] help: add a body after the pattern [INFO] [stdout] | [INFO] [stdout] 6 | ... => { todo!() } [INFO] [stdout] | ++++++++++++++ [INFO] [stdout] [INFO] [stdout] error: `..` patterns are not allowed here [INFO] [stdout] --> src/lib.rs:10:13 [INFO] [stdout] | [INFO] [stdout] 6 | ... [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: only allowed in tuple, tuple struct, and slice patterns [INFO] [stdout] [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> src/lib.rs:8:22 [INFO] [stdout] | [INFO] [stdout] 4 | if let Some(e) = e.downcast_ref::() { [INFO] [stdout] | ^ cannot infer type [INFO] [stdout] [INFO] [stdout] error: aborting due to 6 previous errors [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0282, E0412, E0425. [INFO] [stdout] For more information about an error, try `rustc --explain E0282`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] src/lib.rs - (line 6) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 5 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.37s [INFO] [stdout] [INFO] [stderr] error: doctest failed, to rerun pass `--doc` [INFO] running `Command { std: "docker" "inspect" "77c37cc830f307462acad1c2d927b5d04cc294128795fe3076723d6c83c92799", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "77c37cc830f307462acad1c2d927b5d04cc294128795fe3076723d6c83c92799", kill_on_drop: false }` [INFO] [stdout] 77c37cc830f307462acad1c2d927b5d04cc294128795fe3076723d6c83c92799