[INFO] fetching crate monger 0.14.0...
[INFO] checking monger-0.14.0 against beta for pr-78714
[INFO] extracting crate monger 0.14.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate monger 0.14.0 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 monger 0.14.0
[INFO] finished tweaking crates.io crate monger 0.14.0
[INFO] tweaked toml for crates.io crate monger 0.14.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate monger 0.14.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 9f39366dba021e94a97b3ce5c90862508209be4e825605a03a9dc02c4e65f2cf
[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" "9f39366dba021e94a97b3ce5c90862508209be4e825605a03a9dc02c4e65f2cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f39366dba021e94a97b3ce5c90862508209be4e825605a03a9dc02c4e65f2cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f39366dba021e94a97b3ce5c90862508209be4e825605a03a9dc02c4e65f2cf", kill_on_drop: false }`
[INFO] [stdout] 9f39366dba021e94a97b3ce5c90862508209be4e825605a03a9dc02c4e65f2cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] f9831151b23c6e4ef899d70c7237e6d4bdd070c0ac0bee06168042553b0a96f7
[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" "f9831151b23c6e4ef899d70c7237e6d4bdd070c0ac0bee06168042553b0a96f7", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-io v0.3.7
[INFO] [stderr]     Checking futures-sink v0.3.7
[INFO] [stderr]    Compiling hyperx v1.2.0
[INFO] [stderr]    Compiling self_update v0.20.0
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking rs-release v0.1.7
[INFO] [stderr]     Checking futures-channel v0.3.7
[INFO] [stderr]    Compiling ring v0.16.15
[INFO] [stderr]     Checking futures-task v0.3.7
[INFO] [stderr]     Checking semver-parser v0.10.1
[INFO] [stderr]     Checking socket2 v0.3.15
[INFO] [stderr]     Checking terminal_size v0.1.13
[INFO] [stderr]     Checking filetime v0.2.12
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking aho-corasick v0.7.14
[INFO] [stderr]     Checking quick-xml v0.17.2
[INFO] [stderr]     Checking dirs v3.0.1
[INFO] [stderr]     Checking flate2 v1.0.18
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking hyper-old-types v0.11.0
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]    Compiling futures-macro v0.3.7
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking tar v0.4.30
[INFO] [stderr]    Compiling markup5ever v0.7.5
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking async-compression v0.3.5
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]     Checking semver v0.11.0
[INFO] [stderr]     Checking regex v1.4.1
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking futures-util v0.3.7
[INFO] [stderr]     Checking thiserror v1.0.21
[INFO] [stderr]     Checking console v0.13.0
[INFO] [stderr]     Checking indicatif v0.13.0
[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]     Checking webpki v0.21.3
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking rustls v0.18.1
[INFO] [stderr]     Checking webpki-roots v0.19.0
[INFO] [stderr]     Checking html5ever v0.22.5
[INFO] [stderr]     Checking soup v0.5.0
[INFO] [stderr]     Checking h2 v0.2.7
[INFO] [stderr]     Checking tokio-rustls v0.14.1
[INFO] [stderr]     Checking hyper v0.13.8
[INFO] [stderr]     Checking hyper-rustls v0.21.0
[INFO] [stderr]     Checking reqwest v0.10.8
[INFO] [stderr]     Checking monger-core v0.14.0
[INFO] [stderr]     Checking monger v0.14.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 03s
[INFO] running `Command { std: "docker" "inspect" "f9831151b23c6e4ef899d70c7237e6d4bdd070c0ac0bee06168042553b0a96f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9831151b23c6e4ef899d70c7237e6d4bdd070c0ac0bee06168042553b0a96f7", kill_on_drop: false }`
[INFO] [stdout] f9831151b23c6e4ef899d70c7237e6d4bdd070c0ac0bee06168042553b0a96f7