[INFO] fetching crate tracing-tree 0.1.6...
[INFO] checking tracing-tree-0.1.6 against beta for pr-78714
[INFO] extracting crate tracing-tree 0.1.6 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate tracing-tree 0.1.6 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 crates.io crate tracing-tree 0.1.6
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate tracing-tree 0.1.6
[INFO] tweaked toml for crates.io crate tracing-tree 0.1.6 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate tracing-tree 0.1.6 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 38806a0a9ead655ab93809e34829ccbb97265b1ff62e654608f59ad6947acd4a
[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" "38806a0a9ead655ab93809e34829ccbb97265b1ff62e654608f59ad6947acd4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38806a0a9ead655ab93809e34829ccbb97265b1ff62e654608f59ad6947acd4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38806a0a9ead655ab93809e34829ccbb97265b1ff62e654608f59ad6947acd4a", kill_on_drop: false }`
[INFO] [stdout] 38806a0a9ead655ab93809e34829ccbb97265b1ff62e654608f59ad6947acd4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stdout] 8f8def44c8bd442117cbc4481861980cad7333bc8826f4ef9da279c4e63ae42a
[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" "8f8def44c8bd442117cbc4481861980cad7333bc8826f4ef9da279c4e63ae42a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]     Checking tracing-core v0.1.9
[INFO] [stderr]     Checking sharded-slab v0.0.8
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking assert_cmd v1.0.1
[INFO] [stderr]     Checking tracing-subscriber v0.2.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling tracing-attributes v0.1.6
[INFO] [stderr]     Checking tracing v0.1.12
[INFO] [stderr]     Checking tracing-tree v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.78s
[INFO] running `Command { std: "docker" "inspect" "8f8def44c8bd442117cbc4481861980cad7333bc8826f4ef9da279c4e63ae42a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f8def44c8bd442117cbc4481861980cad7333bc8826f4ef9da279c4e63ae42a", kill_on_drop: false }`
[INFO] [stdout] 8f8def44c8bd442117cbc4481861980cad7333bc8826f4ef9da279c4e63ae42a