[INFO] fetching crate tracing-core 0.1.18...
[INFO] testing tracing-core-0.1.18 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate tracing-core 0.1.18 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate tracing-core 0.1.18 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tracing-core 0.1.18
[INFO] finished tweaking crates.io crate tracing-core 0.1.18
[INFO] tweaked toml for crates.io crate tracing-core 0.1.18 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", 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] 1796a25d7a9cc4919dcdaa3522d8675d28b04249aaf33bdae6aa281b59e12135
[INFO] running `Command { std: "docker" "start" "-a" "1796a25d7a9cc4919dcdaa3522d8675d28b04249aaf33bdae6aa281b59e12135", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1796a25d7a9cc4919dcdaa3522d8675d28b04249aaf33bdae6aa281b59e12135", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1796a25d7a9cc4919dcdaa3522d8675d28b04249aaf33bdae6aa281b59e12135", kill_on_drop: false }`
[INFO] [stdout] 1796a25d7a9cc4919dcdaa3522d8675d28b04249aaf33bdae6aa281b59e12135
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a967cd05cf893e8f762576d30c6ba5e6f01cf49204553a4df1d8d43e0f38069
[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" "7a967cd05cf893e8f762576d30c6ba5e6f01cf49204553a4df1d8d43e0f38069", kill_on_drop: false }`
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling tracing-core v0.1.18 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.49s
[INFO] running `Command { std: "docker" "inspect" "7a967cd05cf893e8f762576d30c6ba5e6f01cf49204553a4df1d8d43e0f38069", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a967cd05cf893e8f762576d30c6ba5e6f01cf49204553a4df1d8d43e0f38069", kill_on_drop: false }`
[INFO] [stdout] 7a967cd05cf893e8f762576d30c6ba5e6f01cf49204553a4df1d8d43e0f38069
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f18d11edae8dcbe3be6e1a98407934244cae74f7bbccb2b13642a00b36ce032
[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" "4f18d11edae8dcbe3be6e1a98407934244cae74f7bbccb2b13642a00b36ce032", kill_on_drop: false }`
[INFO] [stderr]    Compiling tracing-core v0.1.18 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.10s
[INFO] running `Command { std: "docker" "inspect" "4f18d11edae8dcbe3be6e1a98407934244cae74f7bbccb2b13642a00b36ce032", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f18d11edae8dcbe3be6e1a98407934244cae74f7bbccb2b13642a00b36ce032", kill_on_drop: false }`
[INFO] [stdout] 4f18d11edae8dcbe3be6e1a98407934244cae74f7bbccb2b13642a00b36ce032
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8f69c01464a90e7e176ada807428e3486ba65e4ecab0a60e02d6fed8eac0f4d3
[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" "8f69c01464a90e7e176ada807428e3486ba65e4ecab0a60e02d6fed8eac0f4d3", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tracing_core-17e0f1a90c7568a4)
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test dispatcher::test::default_dispatch ... 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::fields_from_other_callsets_are_skipped ... ok
[INFO] [stdout] test field::test::value_set_with_no_values_is_empty ... ok
[INFO] [stdout] test field::test::empty_value_set_is_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] [stderr]      Running tests/dispatch.rs (/opt/rustwide/target/debug/deps/dispatch-061ab93d0dd7ff3c)
[INFO] [stdout] test dispatcher::test::default_no_subscriber ... ok
[INFO] [stdout] test dispatcher::test::dispatch_downcasts ... ok
[INFO] [stdout] test dispatcher::test::dispatch_is ... ok
[INFO] [stdout] test field::test::record_debug_fn ... ok
[INFO] [stdout] test dispatcher::test::events_dont_infinite_loop ... ok
[INFO] [stdout] test field::test::sparse_value_sets_are_not_empty ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/global_dispatch.rs (/opt/rustwide/target/debug/deps/global_dispatch-acac9056720f7de1)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[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] [stderr]      Running tests/macros.rs (/opt/rustwide/target/debug/deps/macros-b7569837939f3e51)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests tracing-core
[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 8 tests
[INFO] [stdout] test src/subscriber.rs - subscriber::Subscriber::record (line 248) ... ignored
[INFO] [stdout] test src/lib.rs - metadata (line 162) ... ok
[INFO] [stdout] test src/field.rs - field::Visit (line 143) ... ok
[INFO] [stdout] test src/dispatcher.rs - dispatcher (line 83) ... ok
[INFO] [stdout] test src/dispatcher.rs - dispatcher (line 48) ... ok
[INFO] [stdout] test src/dispatcher.rs - dispatcher (line 25) ... 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] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 1.44s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8f69c01464a90e7e176ada807428e3486ba65e4ecab0a60e02d6fed8eac0f4d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f69c01464a90e7e176ada807428e3486ba65e4ecab0a60e02d6fed8eac0f4d3", kill_on_drop: false }`
[INFO] [stdout] 8f69c01464a90e7e176ada807428e3486ba65e4ecab0a60e02d6fed8eac0f4d3