[INFO] fetching crate etcdv3client 0.1.1...
[INFO] checking etcdv3client-0.1.1 against beta for pr-78714
[INFO] extracting crate etcdv3client 0.1.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate etcdv3client 0.1.1 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 etcdv3client 0.1.1
[INFO] finished tweaking crates.io crate etcdv3client 0.1.1
[INFO] tweaked toml for crates.io crate etcdv3client 0.1.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate etcdv3client 0.1.1 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-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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 82a0b3d14ef3b22761d6c7068b253df9865cf1c75434358b80dcd0317849df5e
[INFO] running `Command { std: "docker" "start" "-a" "82a0b3d14ef3b22761d6c7068b253df9865cf1c75434358b80dcd0317849df5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82a0b3d14ef3b22761d6c7068b253df9865cf1c75434358b80dcd0317849df5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82a0b3d14ef3b22761d6c7068b253df9865cf1c75434358b80dcd0317849df5e", kill_on_drop: false }`
[INFO] [stdout] 82a0b3d14ef3b22761d6c7068b253df9865cf1c75434358b80dcd0317849df5e
[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" "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] 3a6fb27cc76ba9d80639662ffcbf2f3bf9e12c5b86e9d29ad256151bef376cb4
[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" "3a6fb27cc76ba9d80639662ffcbf2f3bf9e12c5b86e9d29ad256151bef376cb4", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking tower-layer v0.3.0
[INFO] [stderr]     Checking futures-task v0.3.4
[INFO] [stderr]    Compiling anyhow v1.0.28
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling etcdv3client v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tracing-core v0.1.10
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling pin-project-internal v0.4.9
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.7
[INFO] [stderr]    Compiling async-stream-impl v0.2.1
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stderr]    Compiling async-trait v0.1.30
[INFO] [stderr]    Compiling thiserror-impl v1.0.15
[INFO] [stderr]     Checking tokio v0.2.18
[INFO] [stderr]     Checking async-stream v0.2.1
[INFO] [stderr]     Checking thiserror v1.0.15
[INFO] [stderr]     Checking tracing v0.1.13
[INFO] [stderr]     Checking pin-project v0.4.9
[INFO] [stderr]     Checking tower-discover v0.3.0
[INFO] [stderr]     Checking tower-load-shed v0.3.0
[INFO] [stderr]     Checking tower-util v0.3.1
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]     Checking prost v0.6.1
[INFO] [stderr]     Checking tower-load v0.3.0
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tower-buffer v0.3.0
[INFO] [stderr]     Checking tower-timeout v0.3.0
[INFO] [stderr]     Checking tower-ready-cache v0.3.1
[INFO] [stderr]     Checking tower-retry v0.3.0
[INFO] [stderr]     Checking tower-make v0.3.0
[INFO] [stderr]     Checking tower-limit v0.3.1
[INFO] [stderr]     Checking tower-balance v0.3.0
[INFO] [stderr]     Checking h2 v0.2.4
[INFO] [stderr]     Checking tower v0.3.1
[INFO] [stderr]     Checking hyper v0.13.5
[INFO] [stderr]     Checking tonic v0.2.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 19s
[INFO] running `Command { std: "docker" "inspect" "3a6fb27cc76ba9d80639662ffcbf2f3bf9e12c5b86e9d29ad256151bef376cb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a6fb27cc76ba9d80639662ffcbf2f3bf9e12c5b86e9d29ad256151bef376cb4", kill_on_drop: false }`
[INFO] [stdout] 3a6fb27cc76ba9d80639662ffcbf2f3bf9e12c5b86e9d29ad256151bef376cb4