[INFO] cloning repository https://github.com/EverlastingBugstopper/tracing-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/EverlastingBugstopper/tracing-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEverlastingBugstopper%2Ftracing-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEverlastingBugstopper%2Ftracing-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 15d9e102265d1e226d2196b00d1ff1e90772a4e7
[INFO] checking EverlastingBugstopper/tracing-example against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEverlastingBugstopper%2Ftracing-example" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/EverlastingBugstopper/tracing-example on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/EverlastingBugstopper/tracing-example
[INFO] finished tweaking git repo https://github.com/EverlastingBugstopper/tracing-example
[INFO] tweaked toml for git repo https://github.com/EverlastingBugstopper/tracing-example written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/EverlastingBugstopper/tracing-example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b93a973cb78e11a7e03f1c1ac40031d8d9125bb416087f0657eca338ffb3d6cb
[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" "b93a973cb78e11a7e03f1c1ac40031d8d9125bb416087f0657eca338ffb3d6cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b93a973cb78e11a7e03f1c1ac40031d8d9125bb416087f0657eca338ffb3d6cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b93a973cb78e11a7e03f1c1ac40031d8d9125bb416087f0657eca338ffb3d6cb", kill_on_drop: false }`
[INFO] [stdout] b93a973cb78e11a7e03f1c1ac40031d8d9125bb416087f0657eca338ffb3d6cb
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--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] c2c1fc9be0149eae1200197becbc18bf560062b3d6a1ed77f5564dc75eeae905
[INFO] running `Command { std: "docker" "start" "-a" "c2c1fc9be0149eae1200197becbc18bf560062b3d6a1ed77f5564dc75eeae905", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]     Checking tracing-core v0.1.7
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking sharded-slab v0.0.6
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]     Checking tracing-serde v0.1.0
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking tracing-subscriber v0.2.0-alpha.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.5
[INFO] [stderr]     Checking tracing v0.1.10
[INFO] [stderr]     Checking tracing-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.69s
[INFO] running `Command { std: "docker" "inspect" "c2c1fc9be0149eae1200197becbc18bf560062b3d6a1ed77f5564dc75eeae905", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2c1fc9be0149eae1200197becbc18bf560062b3d6a1ed77f5564dc75eeae905", kill_on_drop: false }`
[INFO] [stdout] c2c1fc9be0149eae1200197becbc18bf560062b3d6a1ed77f5564dc75eeae905