[INFO] fetching crate mlflow 0.1.0...
[INFO] checking mlflow-0.1.0 against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] extracting crate mlflow 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate mlflow 0.1.0 on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-2/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" "+195ad4830e11a544391abe296b146450dea8411b" "fetch" "--locked" "--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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1bb63b7731ad9c7f831bb7031fec280efc9d9a522d8e141385484135469d139e
[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" "1bb63b7731ad9c7f831bb7031fec280efc9d9a522d8e141385484135469d139e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bb63b7731ad9c7f831bb7031fec280efc9d9a522d8e141385484135469d139e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bb63b7731ad9c7f831bb7031fec280efc9d9a522d8e141385484135469d139e", kill_on_drop: false }`
[INFO] [stdout] 1bb63b7731ad9c7f831bb7031fec280efc9d9a522d8e141385484135469d139e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51e9045648dd08893fcdb8919847a778045d3a315ad35cb472cf1c8fc8face3c
[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" "51e9045648dd08893fcdb8919847a778045d3a315ad35cb472cf1c8fc8face3c", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.62
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking chunked_transfer v1.3.0
[INFO] [stderr]    Compiling nanoserde-derive v0.1.12
[INFO] [stderr]     Checking nanorand v0.4.4
[INFO] [stderr]     Checking pico-args v0.3.4
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking tinyvec v1.0.1
[INFO] [stderr]     Checking form_urlencoded v1.0.0
[INFO] [stderr]     Checking qstring v0.7.2
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking nanoserde v0.1.20
[INFO] [stderr]    Compiling ring v0.16.16
[INFO] [stderr]     Checking unicode-normalization v0.1.15
[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 40.59s
[INFO] running `Command { std: "docker" "inspect" "51e9045648dd08893fcdb8919847a778045d3a315ad35cb472cf1c8fc8face3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51e9045648dd08893fcdb8919847a778045d3a315ad35cb472cf1c8fc8face3c", kill_on_drop: false }`
[INFO] [stdout] 51e9045648dd08893fcdb8919847a778045d3a315ad35cb472cf1c8fc8face3c