[INFO] fetching crate first-err 0.2.2...
[INFO] testing first-err-0.2.2 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate first-err 0.2.2 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate first-err 0.2.2
[INFO] finished tweaking crates.io crate first-err 0.2.2
[INFO] tweaked toml for crates.io crate first-err 0.2.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate first-err 0.2.2 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 72 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.5.1 (available: v0.7.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a1844670028b0cde80f816e1e80fd68f855969fbbb86289117df3302b3cd3038
[INFO] running `Command { std: "docker" "start" "-a" "a1844670028b0cde80f816e1e80fd68f855969fbbb86289117df3302b3cd3038", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1844670028b0cde80f816e1e80fd68f855969fbbb86289117df3302b3cd3038", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1844670028b0cde80f816e1e80fd68f855969fbbb86289117df3302b3cd3038", kill_on_drop: false }`
[INFO] [stdout] a1844670028b0cde80f816e1e80fd68f855969fbbb86289117df3302b3cd3038
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 88f1a5a8fa98f4b5892cb8ab9f556a869d054cdc719cde77ad990df1300e4b49
[INFO] running `Command { std: "docker" "start" "-a" "88f1a5a8fa98f4b5892cb8ab9f556a869d054cdc719cde77ad990df1300e4b49", kill_on_drop: false }`
[INFO] [stderr]    Compiling first-err v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "88f1a5a8fa98f4b5892cb8ab9f556a869d054cdc719cde77ad990df1300e4b49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88f1a5a8fa98f4b5892cb8ab9f556a869d054cdc719cde77ad990df1300e4b49", kill_on_drop: false }`
[INFO] [stdout] 88f1a5a8fa98f4b5892cb8ab9f556a869d054cdc719cde77ad990df1300e4b49
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 59dccccfe4c1a9a255e1dbb19fa1db42acd76ade257d9af3cbe8a13d52612783
[INFO] running `Command { std: "docker" "start" "-a" "59dccccfe4c1a9a255e1dbb19fa1db42acd76ade257d9af3cbe8a13d52612783", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling criterion v0.5.1
[INFO] [stderr]    Compiling first-err v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 8.40s
[INFO] running `Command { std: "docker" "inspect" "59dccccfe4c1a9a255e1dbb19fa1db42acd76ade257d9af3cbe8a13d52612783", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59dccccfe4c1a9a255e1dbb19fa1db42acd76ade257d9af3cbe8a13d52612783", kill_on_drop: false }`
[INFO] [stdout] 59dccccfe4c1a9a255e1dbb19fa1db42acd76ade257d9af3cbe8a13d52612783
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e9566e9b62af9f19ea3d9b7b9e2064ff9054280f582d5d4239fed1dfbda931d9
[INFO] running `Command { std: "docker" "start" "-a" "e9566e9b62af9f19ea3d9b7b9e2064ff9054280f582d5d4239fed1dfbda931d9", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/first_err-08fdee611bbeb8b8)
[INFO] [stdout] 
[INFO] [stdout] running 32 tests
[INFO] [stdout] test tests::test_first_err::_methods_can_call_through_trait_object ... ok
[INFO] [stdout] test tests::test_first_err::_or_else_not_need_to_consume_iter_manually ... ok
[INFO] [stdout] test tests::test_first_err::_or_else_use_lazy_evaluation ... ok
[INFO] [stdout] test tests::test_first_err::_or_else_with_1_layer_data_and_without_err ... ok
[INFO] [stdout] test tests::test_first_err::_or_else_with_2_layer_data_and_outmost_err_in_layer_1 ... ok
[INFO] [stdout] test tests::test_first_err::_or_try_with_err_and_closure_produce_err ... ok
[INFO] [stdout] test tests::test_first_err::_or_try_with_err_and_closure_produce_ok ... ok
[INFO] [stdout] test tests::test_first_err::_or_try_without_err_and_closure_produce_ok ... ok
[INFO] [stdout] test tests::test_first_err::_or_else_with_non_fused_iterator ... ok
[INFO] [stdout] test tests::test_first_err::_or_else_with_3_layer_data_and_outmost_err_in_layer_2 ... ok
[INFO] [stdout] test tests::test_first_err::_or_with_err ... ok
[INFO] [stdout] test tests::test_first_none::_or_else_with_1_layer_data_and_without_none ... ok
[INFO] [stdout] test tests::test_first_none::_or_else_with_2_layer_data_and_outmost_none_in_layer_1 ... ok
[INFO] [stdout] test tests::test_first_none::_or_else_with_2_layer_data_and_outmost_none_in_layer_2 ... ok
[INFO] [stdout] test tests::test_first_none::_or_else_with_non_fused_iterator ... ok
[INFO] [stdout] test tests::test_first_none::_or_try_with_none_and_closure_produce_some ... ok
[INFO] [stdout] test tests::test_first_none::_or_try_without_none_and_closure_produce_none ... ok
[INFO] [stdout] test tests::test_first_none::_or_try_with_none_and_closure_produce_none ... ok
[INFO] [stdout] test tests::test_first_none::_or_try_without_none_and_closure_produce_some ... ok
[INFO] [stdout] test tests::test_first_none::_or_with_none ... ok
[INFO] [stdout] test tests::test_first_err::_or_try_without_err_and_closure_produce_err ... ok
[INFO] [stdout] test tests::test_first_none::_or_without_none ... ok
[INFO] [stdout] test tests::test_first_err::_or_without_err ... ok
[INFO] [stdout] test tests::test_first_err::_or_else_with_1_layer_data_and_with_err ... ok
[INFO] [stdout] test tests::test_first_none::_methods_can_call_through_trait_object ... ok
[INFO] [stdout] test tests::test_first_none::_or_else_never_call_next_on_orig_iter_after_first_none_found ... ok
[INFO] [stdout] test tests::test_first_none::_or_else_not_need_to_consume_iter_manually ... ok
[INFO] [stdout] test tests::test_first_none::_or_else_use_lazy_evaluation ... ok
[INFO] [stdout] test tests::test_first_err::_or_else_with_2_layer_data_and_outmost_err_in_layer_2 ... ok
[INFO] [stderr]    Doc-tests first_err
[INFO] [stdout] test tests::test_first_err::_or_else_never_call_next_on_orig_iter_after_first_err_found ... ok
[INFO] [stdout] test tests::test_first_none::_or_else_with_1_layer_data_and_with_none ... ok
[INFO] [stdout] test tests::test_first_none::_or_else_with_3_layer_data_and_outmost_none_in_layer_2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 32 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test src/lib.rs - FirstErr (line 244) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - FirstErr::first_none_or (line 506) ... ok
[INFO] [stdout] test src/lib.rs - (line 79) ... ok
[INFO] [stdout] test src/lib.rs - FirstErr::first_err_or_else (line 264) ... ok
[INFO] [stdout] test src/lib.rs - (line 27) ... ok
[INFO] [stdout] test src/lib.rs - FirstErr (line 227) ... ok
[INFO] [stdout] test src/lib.rs - (line 133) ... ok
[INFO] [stdout] test src/lib.rs - FirstErr (line 196) ... ok
[INFO] [stdout] test src/lib.rs - FirstErr::first_none_or_else (line 403) ... ok
[INFO] [stdout] test src/lib.rs - (line 57) ... ok
[INFO] [stdout] test src/lib.rs - FirstErr::first_none_or_try (line 473) ... ok
[INFO] [stdout] test src/lib.rs - FirstErr::first_err_or_try (line 334) ... ok
[INFO] [stdout] test src/lib.rs - FirstErr::first_err_or (line 368) ... ok
[INFO] [stdout] test src/lib.rs - FirstErr::first_none_or_try (line 441) ... ok
[INFO] [stdout] test src/lib.rs - (line 103) ... ok
[INFO] [stdout] test src/lib.rs - FirstErr::first_err_or_try (line 302) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.90s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e9566e9b62af9f19ea3d9b7b9e2064ff9054280f582d5d4239fed1dfbda931d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9566e9b62af9f19ea3d9b7b9e2064ff9054280f582d5d4239fed1dfbda931d9", kill_on_drop: false }`
[INFO] [stdout] e9566e9b62af9f19ea3d9b7b9e2064ff9054280f582d5d4239fed1dfbda931d9