[INFO] fetching crate mongo-file-center 0.4.2...
[INFO] checking mongo-file-center-0.4.2 against master#a836d9b6413d9d593be6c09463ff8c4c70e56599 for pr-84037
[INFO] extracting crate mongo-file-center 0.4.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate mongo-file-center 0.4.2 on toolchain a836d9b6413d9d593be6c09463ff8c4c70e56599
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mongo-file-center 0.4.2
[INFO] finished tweaking crates.io crate mongo-file-center 0.4.2
[INFO] tweaked toml for crates.io crate mongo-file-center 0.4.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc7de56eb280b83bdf46153e060b4dc11b5d645b3fde0b52d1ea3aa53127f038
[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" "dc7de56eb280b83bdf46153e060b4dc11b5d645b3fde0b52d1ea3aa53127f038", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc7de56eb280b83bdf46153e060b4dc11b5d645b3fde0b52d1ea3aa53127f038", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc7de56eb280b83bdf46153e060b4dc11b5d645b3fde0b52d1ea3aa53127f038", kill_on_drop: false }`
[INFO] [stdout] dc7de56eb280b83bdf46153e060b4dc11b5d645b3fde0b52d1ea3aa53127f038
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3a9c71202fdf5e0eb251c2b3bb39be3d77d4c2ce2348f41ff74f089a9a3a895
[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" "e3a9c71202fdf5e0eb251c2b3bb39be3d77d4c2ce2348f41ff74f089a9a3a895", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking debug-helper v0.3.11
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking md5 v0.6.1
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]     Checking base32 v0.4.0
[INFO] [stderr]     Checking separator v0.4.1
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking base64-url v1.4.10
[INFO] [stderr]     Checking crc-any v2.3.9
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking md-5 v0.8.0
[INFO] [stderr]     Checking sha3 v0.8.2
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking short-crypt v1.0.25
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking pbkdf2 v0.3.0
[INFO] [stderr]     Checking scan_fmt v0.1.3
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking bson v0.14.0
[INFO] [stderr]     Checking textnonce v0.6.5
[INFO] [stderr]     Checking mongodb v0.4.0
[INFO] [stderr]     Checking mongo-file-center v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.51s
[INFO] running `Command { std: "docker" "inspect" "e3a9c71202fdf5e0eb251c2b3bb39be3d77d4c2ce2348f41ff74f089a9a3a895", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3a9c71202fdf5e0eb251c2b3bb39be3d77d4c2ce2348f41ff74f089a9a3a895", kill_on_drop: false }`
[INFO] [stdout] e3a9c71202fdf5e0eb251c2b3bb39be3d77d4c2ce2348f41ff74f089a9a3a895