[INFO] cloning repository https://github.com/thekuom/serde_json_tracing_bunyan_formatter_bug_report
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/thekuom/serde_json_tracing_bunyan_formatter_bug_report" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthekuom%2Fserde_json_tracing_bunyan_formatter_bug_report", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthekuom%2Fserde_json_tracing_bunyan_formatter_bug_report'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 640868f4e8b1a4627f557864a26bd5e29e146532
[INFO] checking thekuom/serde_json_tracing_bunyan_formatter_bug_report against 52995a223f2919dd3e2e427231db90a257350ded for pr-129249-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthekuom%2Fserde_json_tracing_bunyan_formatter_bug_report" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/thekuom/serde_json_tracing_bunyan_formatter_bug_report
[INFO] finished tweaking git repo https://github.com/thekuom/serde_json_tracing_bunyan_formatter_bug_report
[INFO] tweaked toml for git repo https://github.com/thekuom/serde_json_tracing_bunyan_formatter_bug_report written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/thekuom/serde_json_tracing_bunyan_formatter_bug_report on toolchain 52995a223f2919dd3e2e427231db90a257350ded
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/thekuom/serde_json_tracing_bunyan_formatter_bug_report already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-core v0.1.18
[INFO] [stderr]   Downloaded gethostname v0.2.1
[INFO] [stderr]   Downloaded sharded-slab v0.1.1
[INFO] [stderr]   Downloaded serde_derive v1.0.125
[INFO] [stderr]   Downloaded tracing v0.1.26
[INFO] [stderr]   Downloaded serde v1.0.125
[INFO] [stderr]   Downloaded tracing-subscriber v0.2.18
[INFO] [stderr]   Downloaded tracing-bunyan-formatter v0.2.1
[INFO] [stderr]   Downloaded syn v1.0.71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:c0af3998e971868164375a7dfb646c9933ddd1a3bdb00fa2041266763dc1eeab" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 5321863900e8399a5bc8ea679edf27f112c28da97e3ed263d815f62b50bfc906
[INFO] running `Command { std: "docker" "start" "5321863900e8399a5bc8ea679edf27f112c28da97e3ed263d815f62b50bfc906", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5321863900e8399a5bc8ea679edf27f112c28da97e3ed263d815f62b50bfc906", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "5321863900e8399a5bc8ea679edf27f112c28da97e3ed263d815f62b50bfc906" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5321863900e8399a5bc8ea679edf27f112c28da97e3ed263d815f62b50bfc906", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "5321863900e8399a5bc8ea679edf27f112c28da97e3ed263d815f62b50bfc906" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.71
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking sharded-slab v0.1.1
[INFO] [stderr]     Checking gethostname v0.2.1
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking tracing-log v0.1.2
[INFO] [stderr]     Checking tracing-subscriber v0.2.18
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking tracing-bunyan-formatter v0.2.1
[INFO] [stderr]     Checking serde-error-minimal v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused dependency `tracing-bunyan-formatter`
[INFO] [stderr]  --> Cargo.toml:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | tracing-bunyan-formatter = "0.2.1"
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `tracing-bunyan-formatter`
[INFO] [stderr] warning: `serde-error-minimal` (manifest) generated 1 warning
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.12s
[INFO] running `Command { std: "docker" "inspect" "5321863900e8399a5bc8ea679edf27f112c28da97e3ed263d815f62b50bfc906", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5321863900e8399a5bc8ea679edf27f112c28da97e3ed263d815f62b50bfc906", kill_on_drop: false }`
[INFO] [stdout] 5321863900e8399a5bc8ea679edf27f112c28da97e3ed263d815f62b50bfc906
