[INFO] fetching crate mlflow 0.1.0...
[INFO] checking mlflow-0.1.0 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate mlflow 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate mlflow 0.1.0 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mlflow 0.1.0
[INFO] finished tweaking crates.io crate mlflow 0.1.0
[INFO] tweaked toml for crates.io crate mlflow 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate mlflow 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 78cd8214c2712e8282b25d7576e2fd9d1ead87f4bc2c0c7beb69fe7d3171e73b
[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" "78cd8214c2712e8282b25d7576e2fd9d1ead87f4bc2c0c7beb69fe7d3171e73b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78cd8214c2712e8282b25d7576e2fd9d1ead87f4bc2c0c7beb69fe7d3171e73b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78cd8214c2712e8282b25d7576e2fd9d1ead87f4bc2c0c7beb69fe7d3171e73b", kill_on_drop: false }`
[INFO] [stdout] 78cd8214c2712e8282b25d7576e2fd9d1ead87f4bc2c0c7beb69fe7d3171e73b
[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=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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8503528ff5efd01a4b7b44dee0eb5c3328f662a6eb49984147fa23ccbcf850c2
[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" "8503528ff5efd01a4b7b44dee0eb5c3328f662a6eb49984147fa23ccbcf850c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.62
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]    Compiling nanoserde-derive v0.1.12
[INFO] [stderr]     Checking chunked_transfer v1.3.0
[INFO] [stderr]     Checking pico-args v0.3.4
[INFO] [stderr]     Checking nanorand v0.4.4
[INFO] [stderr]     Checking qstring v0.7.2
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking form_urlencoded v1.0.0
[INFO] [stderr]     Checking tinyvec v1.0.1
[INFO] [stderr]     Checking nanoserde v0.1.20
[INFO] [stderr]     Checking unicode-normalization v0.1.15
[INFO] [stderr]    Compiling ring v0.16.16
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking url v2.2.0
[INFO] [stderr]     Checking webpki v0.21.3
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking rustls v0.18.1
[INFO] [stderr]     Checking webpki-roots v0.20.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]     Checking ureq v1.5.2
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]     Checking mlflow v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.32s
[INFO] running `Command { std: "docker" "inspect" "8503528ff5efd01a4b7b44dee0eb5c3328f662a6eb49984147fa23ccbcf850c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8503528ff5efd01a4b7b44dee0eb5c3328f662a6eb49984147fa23ccbcf850c2", kill_on_drop: false }`
[INFO] [stdout] 8503528ff5efd01a4b7b44dee0eb5c3328f662a6eb49984147fa23ccbcf850c2