[INFO] fetching crate tracing-serde 0.1.2...
[INFO] testing tracing-serde-0.1.2 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate tracing-serde 0.1.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate tracing-serde 0.1.2 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-serde 0.1.2
[INFO] finished tweaking crates.io crate tracing-serde 0.1.2
[INFO] tweaked toml for crates.io crate tracing-serde 0.1.2 written to /workspace/builds/worker-7/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 519a4a9cac807a94b59d1eb7bbdbc037734ce661dd1304e8b4b2d7183d414812
[INFO] running `Command { std: "docker" "start" "-a" "519a4a9cac807a94b59d1eb7bbdbc037734ce661dd1304e8b4b2d7183d414812", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "519a4a9cac807a94b59d1eb7bbdbc037734ce661dd1304e8b4b2d7183d414812", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "519a4a9cac807a94b59d1eb7bbdbc037734ce661dd1304e8b4b2d7183d414812", kill_on_drop: false }`
[INFO] [stdout] 519a4a9cac807a94b59d1eb7bbdbc037734ce661dd1304e8b4b2d7183d414812
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 41563b8ee26650dd8b29033e5bea8ee831f6afce9e3ca885199e750fbf1e5c79
[INFO] running `Command { std: "docker" "start" "-a" "41563b8ee26650dd8b29033e5bea8ee831f6afce9e3ca885199e750fbf1e5c79", kill_on_drop: false }`
[INFO] [stderr]    Compiling tracing-core v0.1.19
[INFO] [stderr]    Compiling tracing-serde v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `Command { std: "docker" "inspect" "41563b8ee26650dd8b29033e5bea8ee831f6afce9e3ca885199e750fbf1e5c79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41563b8ee26650dd8b29033e5bea8ee831f6afce9e3ca885199e750fbf1e5c79", kill_on_drop: false }`
[INFO] [stdout] 41563b8ee26650dd8b29033e5bea8ee831f6afce9e3ca885199e750fbf1e5c79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] b302e44ea99443ae208b86db666126d8f4040f38673f368a48451244fb3c773b
[INFO] running `Command { std: "docker" "start" "-a" "b302e44ea99443ae208b86db666126d8f4040f38673f368a48451244fb3c773b", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling tracing-serde v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.50s
[INFO] running `Command { std: "docker" "inspect" "b302e44ea99443ae208b86db666126d8f4040f38673f368a48451244fb3c773b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b302e44ea99443ae208b86db666126d8f4040f38673f368a48451244fb3c773b", kill_on_drop: false }`
[INFO] [stdout] b302e44ea99443ae208b86db666126d8f4040f38673f368a48451244fb3c773b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] dc2cc49b47a76220cc9654aea996c5d6abe946fb021ad92f482e10c5b84e61a2
[INFO] running `Command { std: "docker" "start" "-a" "dc2cc49b47a76220cc9654aea996c5d6abe946fb021ad92f482e10c5b84e61a2", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tracing_serde-03b8f1771fbfce20)
[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 tracing-serde
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 51) ... ok
[INFO] [stdout] test src/lib.rs - (line 67) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.77s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dc2cc49b47a76220cc9654aea996c5d6abe946fb021ad92f482e10c5b84e61a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc2cc49b47a76220cc9654aea996c5d6abe946fb021ad92f482e10c5b84e61a2", kill_on_drop: false }`
[INFO] [stdout] dc2cc49b47a76220cc9654aea996c5d6abe946fb021ad92f482e10c5b84e61a2