[INFO] cloning repository https://github.com/avranju/tracing-test-subscriber
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/avranju/tracing-test-subscriber" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favranju%2Ftracing-test-subscriber", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favranju%2Ftracing-test-subscriber'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c1eef2189d0cf19014cddd5b0a7ebd9e35bf2be6
[INFO] checking avranju/tracing-test-subscriber against master#9503ea19edbf01b9435e80e17d60ce1b88390116 for pr-81782
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favranju%2Ftracing-test-subscriber" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/avranju/tracing-test-subscriber on toolchain 9503ea19edbf01b9435e80e17d60ce1b88390116
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/avranju/tracing-test-subscriber
[INFO] finished tweaking git repo https://github.com/avranju/tracing-test-subscriber
[INFO] tweaked toml for git repo https://github.com/avranju/tracing-test-subscriber written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/avranju/tracing-test-subscriber already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "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] 76a2a0003b882e14e7dc0574ae87c33b3889b952ce3b43b7c51b6248182037d9
[INFO] running `Command { std: "docker" "start" "-a" "76a2a0003b882e14e7dc0574ae87c33b3889b952ce3b43b7c51b6248182037d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76a2a0003b882e14e7dc0574ae87c33b3889b952ce3b43b7c51b6248182037d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76a2a0003b882e14e7dc0574ae87c33b3889b952ce3b43b7c51b6248182037d9", kill_on_drop: false }`
[INFO] [stdout] 76a2a0003b882e14e7dc0574ae87c33b3889b952ce3b43b7c51b6248182037d9
[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=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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d21e6d2d3ab692e9f9016005f1b48e2bec7f78c501025c04739752fa4ff8d62a
[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" "d21e6d2d3ab692e9f9016005f1b48e2bec7f78c501025c04739752fa4ff8d62a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking regex-syntax v0.6.13
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking tracing-core v0.1.9
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking sharded-slab v0.0.7
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking regex v1.3.3
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking tracing-serde v0.1.0
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking tracing-subscriber v0.2.0-alpha.4
[INFO] [stderr]    Compiling tracing-attributes v0.1.6
[INFO] [stderr]     Checking tracing v0.1.12
[INFO] [stderr]     Checking tracing-test-subscriber v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.65s
[INFO] running `Command { std: "docker" "inspect" "d21e6d2d3ab692e9f9016005f1b48e2bec7f78c501025c04739752fa4ff8d62a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d21e6d2d3ab692e9f9016005f1b48e2bec7f78c501025c04739752fa4ff8d62a", kill_on_drop: false }`
[INFO] [stdout] d21e6d2d3ab692e9f9016005f1b48e2bec7f78c501025c04739752fa4ff8d62a