[INFO] fetching crate tracing-core 0.1.17...
[INFO] testing tracing-core-0.1.17 against 1.49.0 for beta-1.50-1
[INFO] extracting crate tracing-core 0.1.17 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate tracing-core 0.1.17 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tracing-core 0.1.17
[INFO] finished tweaking crates.io crate tracing-core 0.1.17
[INFO] tweaked toml for crates.io crate tracing-core 0.1.17 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 712a9b20f64c6c38795ed4955c6bff7e7d9b6f522c0ea47fcd1cf342928a4d41
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "712a9b20f64c6c38795ed4955c6bff7e7d9b6f522c0ea47fcd1cf342928a4d41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "712a9b20f64c6c38795ed4955c6bff7e7d9b6f522c0ea47fcd1cf342928a4d41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "712a9b20f64c6c38795ed4955c6bff7e7d9b6f522c0ea47fcd1cf342928a4d41", kill_on_drop: false }`
[INFO] [stdout] 712a9b20f64c6c38795ed4955c6bff7e7d9b6f522c0ea47fcd1cf342928a4d41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f00171e57ee1ce3675c95465599b987728fc2cbe3d2858ee8c63aaadb96b2e6d
[INFO] running `Command { std: "docker" "start" "-a" "f00171e57ee1ce3675c95465599b987728fc2cbe3d2858ee8c63aaadb96b2e6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling tracing-core v0.1.17 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.93s
[INFO] running `Command { std: "docker" "inspect" "f00171e57ee1ce3675c95465599b987728fc2cbe3d2858ee8c63aaadb96b2e6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f00171e57ee1ce3675c95465599b987728fc2cbe3d2858ee8c63aaadb96b2e6d", kill_on_drop: false }`
[INFO] [stdout] f00171e57ee1ce3675c95465599b987728fc2cbe3d2858ee8c63aaadb96b2e6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7d6e4741a33b484f5fb7b9eb8a499a4df22cec6a1a3ebf21ae031a01a16a9395
[INFO] running `Command { std: "docker" "start" "-a" "7d6e4741a33b484f5fb7b9eb8a499a4df22cec6a1a3ebf21ae031a01a16a9395", kill_on_drop: false }`
[INFO] [stderr]    Compiling tracing-core v0.1.17 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.14s
[INFO] running `Command { std: "docker" "inspect" "7d6e4741a33b484f5fb7b9eb8a499a4df22cec6a1a3ebf21ae031a01a16a9395", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d6e4741a33b484f5fb7b9eb8a499a4df22cec6a1a3ebf21ae031a01a16a9395", kill_on_drop: false }`
[INFO] [stdout] 7d6e4741a33b484f5fb7b9eb8a499a4df22cec6a1a3ebf21ae031a01a16a9395
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 67f9bb770d89e03e3be5bbe606c915d2463c191ca23ace13f09a9ff981372026
[INFO] running `Command { std: "docker" "start" "-a" "67f9bb770d89e03e3be5bbe606c915d2463c191ca23ace13f09a9ff981372026", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/tracing_core-ea245746c65ddfe3
[INFO] [stdout] running 17 tests
[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::events_dont_infinite_loop ... ok
[INFO] [stdout] test dispatcher::test::dispatch_is ... ok
[INFO] [stdout] test dispatcher::test::spans_dont_infinite_loop ... ok
[INFO] [stdout] test metadata::tests::filter_level_conversion ... ok
[INFO] [stdout] test metadata::tests::level_filter_is_usize_sized ... ok
[INFO] [stdout] test field::test::empty_fields_are_skipped ... ok
[INFO] [stdout] test field::test::value_sets_with_fields_from_other_callsites_are_empty ... ok
[INFO] [stdout] test metadata::tests::level_filter_reprs ... ok
[INFO] [stdout] test field::test::value_set_with_no_values_is_empty ... ok
[INFO] [stdout] test field::test::fields_from_other_callsets_are_skipped ... ok
[INFO] [stdout] test field::test::sparse_value_sets_are_not_empty ... ok
[INFO] [stdout] test field::test::empty_value_set_is_empty ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/dispatch-e0aaad968f517b03
[INFO] [stdout] test metadata::tests::level_from_str ... ok
[INFO] [stdout] test field::test::record_debug_fn ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/global_dispatch-7c7fcd8f94b2d9d7
[INFO] [stdout] test set_default_dispatch ... ok
[INFO] [stdout] test nested_set_default ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/macros-ac4714227b044441
[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
[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
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/subscriber.rs - subscriber::Subscriber::record (line 244) ... ignored
[INFO] [stdout] test src/field.rs - field::Visit (line 143) ... ok
[INFO] [stdout] test src/dispatcher.rs - dispatcher (line 48) ... ok
[INFO] [stdout] test src/field.rs - field::Visit (line 112) ... ok
[INFO] [stdout] test src/lib.rs - metadata (line 162) ... ok
[INFO] [stdout] test src/lib.rs - identify_callsite (line 126) ... ok
[INFO] [stdout] test src/dispatcher.rs - dispatcher (line 83) ... ok
[INFO] [stdout] test src/dispatcher.rs - dispatcher (line 25) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "67f9bb770d89e03e3be5bbe606c915d2463c191ca23ace13f09a9ff981372026", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67f9bb770d89e03e3be5bbe606c915d2463c191ca23ace13f09a9ff981372026", kill_on_drop: false }`
[INFO] [stdout] 67f9bb770d89e03e3be5bbe606c915d2463c191ca23ace13f09a9ff981372026