[INFO] fetching crate tracing-core 0.1.19...
[INFO] testing tracing-core-0.1.19 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate tracing-core 0.1.19 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate tracing-core 0.1.19 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tracing-core 0.1.19
[INFO] finished tweaking crates.io crate tracing-core 0.1.19
[INFO] tweaked toml for crates.io crate tracing-core 0.1.19 written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 946e384b6afb4695ded3d45b1aa3199f225a76adaa1b640229f46d619230ee30
[INFO] running `Command { std: "docker" "start" "-a" "946e384b6afb4695ded3d45b1aa3199f225a76adaa1b640229f46d619230ee30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "946e384b6afb4695ded3d45b1aa3199f225a76adaa1b640229f46d619230ee30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "946e384b6afb4695ded3d45b1aa3199f225a76adaa1b640229f46d619230ee30", kill_on_drop: false }`
[INFO] [stdout] 946e384b6afb4695ded3d45b1aa3199f225a76adaa1b640229f46d619230ee30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c478ca20964be43afaa09fe75faab414b9073fdda68ddc3c82f700df4c78e92
[INFO] running `Command { std: "docker" "start" "-a" "9c478ca20964be43afaa09fe75faab414b9073fdda68ddc3c82f700df4c78e92", kill_on_drop: false }`
[INFO] [stderr]    Compiling tracing-core v0.1.19 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "9c478ca20964be43afaa09fe75faab414b9073fdda68ddc3c82f700df4c78e92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c478ca20964be43afaa09fe75faab414b9073fdda68ddc3c82f700df4c78e92", kill_on_drop: false }`
[INFO] [stdout] 9c478ca20964be43afaa09fe75faab414b9073fdda68ddc3c82f700df4c78e92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7bc39c2ab68b30b8e36d0ac4c70a175a2d646208f24698a2e794ed5150ec5f1
[INFO] running `Command { std: "docker" "start" "-a" "e7bc39c2ab68b30b8e36d0ac4c70a175a2d646208f24698a2e794ed5150ec5f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling tracing-core v0.1.19 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "e7bc39c2ab68b30b8e36d0ac4c70a175a2d646208f24698a2e794ed5150ec5f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7bc39c2ab68b30b8e36d0ac4c70a175a2d646208f24698a2e794ed5150ec5f1", kill_on_drop: false }`
[INFO] [stdout] e7bc39c2ab68b30b8e36d0ac4c70a175a2d646208f24698a2e794ed5150ec5f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 80d66f22e47ec0cc9692ee21d66f65e9c015636f9ffec62658f0db7b25e66e87
[INFO] running `Command { std: "docker" "start" "-a" "80d66f22e47ec0cc9692ee21d66f65e9c015636f9ffec62658f0db7b25e66e87", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tracing_core-b15b5ca42f8a874c)
[INFO] [stdout] running 17 tests
[INFO] [stderr]      Running tests/dispatch.rs (/opt/rustwide/target/debug/deps/dispatch-e7e9cfc4d306f953)
[INFO] [stdout] test dispatcher::test::default_dispatch ... ok
[INFO] [stdout] test dispatcher::test::dispatch_downcasts ... ok
[INFO] [stdout] test dispatcher::test::default_no_subscriber ... ok
[INFO] [stdout] test dispatcher::test::dispatch_is ... ok
[INFO] [stdout] test dispatcher::test::events_dont_infinite_loop ... ok
[INFO] [stdout] test dispatcher::test::spans_dont_infinite_loop ... ok
[INFO] [stdout] test field::test::empty_fields_are_skipped ... ok
[INFO] [stdout] test field::test::empty_value_set_is_empty ... ok
[INFO] [stdout] test field::test::fields_from_other_callsets_are_skipped ... ok
[INFO] [stdout] test field::test::record_debug_fn ... ok
[INFO] [stdout] test field::test::value_set_with_no_values_is_empty ... ok
[INFO] [stdout] test field::test::sparse_value_sets_are_not_empty ... ok
[INFO] [stdout] test field::test::value_sets_with_fields_from_other_callsites_are_empty ... ok
[INFO] [stdout] test metadata::tests::filter_level_conversion ... ok
[INFO] [stdout] test metadata::tests::level_filter_is_usize_sized ... ok
[INFO] [stdout] test metadata::tests::level_filter_reprs ... ok
[INFO] [stdout] test metadata::tests::level_from_str ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test nested_set_default ... ok
[INFO] [stdout] test set_default_dispatch ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]      Running tests/global_dispatch.rs (/opt/rustwide/target/debug/deps/global_dispatch-2cf93b24ef6cfa3e)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/macros.rs (/opt/rustwide/target/debug/deps/macros-3756695a55582550)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tracing-core
[INFO] [stdout] running 1 test
[INFO] [stdout] test global_dispatch ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test metadata_macro_api ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test src/subscriber.rs - subscriber::Subscriber::record (line 248) ... ignored
[INFO] [stdout] test src/field.rs - field::Visit (line 143) ... ok
[INFO] [stdout] test src/lib.rs - metadata (line 162) ... ok
[INFO] [stdout] test src/metadata.rs - metadata::Level (line 105) ... ok
[INFO] [stdout] test src/metadata.rs - metadata::Level (line 134) ... ok
[INFO] [stdout] test src/field.rs - field::Visit (line 112) ... ok
[INFO] [stdout] test src/lib.rs - identify_callsite (line 126) ... ok
[INFO] [stdout] test src/dispatcher.rs - dispatcher (line 25) ... ok
[INFO] [stdout] test src/dispatcher.rs - dispatcher (line 83) ... ok
[INFO] [stdout] test src/metadata.rs - metadata::Level (line 153) ... ok
[INFO] [stdout] test src/dispatcher.rs - dispatcher (line 48) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.32s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "80d66f22e47ec0cc9692ee21d66f65e9c015636f9ffec62658f0db7b25e66e87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80d66f22e47ec0cc9692ee21d66f65e9c015636f9ffec62658f0db7b25e66e87", kill_on_drop: false }`
[INFO] [stdout] 80d66f22e47ec0cc9692ee21d66f65e9c015636f9ffec62658f0db7b25e66e87