[INFO] fetching crate failsafe 1.0.0...
[INFO] checking failsafe-1.0.0 against beta for pr-78714
[INFO] extracting crate failsafe 1.0.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate failsafe 1.0.0 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 failsafe 1.0.0
[INFO] finished tweaking crates.io crate failsafe 1.0.0
[INFO] tweaked toml for crates.io crate failsafe 1.0.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/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] 9c4bc8a1f17dcf69c2f6c9f59825a3d74c61370cdf47cd8a91f91ca546090b08
[INFO] running `Command { std: "docker" "start" "-a" "9c4bc8a1f17dcf69c2f6c9f59825a3d74c61370cdf47cd8a91f91ca546090b08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c4bc8a1f17dcf69c2f6c9f59825a3d74c61370cdf47cd8a91f91ca546090b08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c4bc8a1f17dcf69c2f6c9f59825a3d74c61370cdf47cd8a91f91ca546090b08", kill_on_drop: false }`
[INFO] [stdout] 9c4bc8a1f17dcf69c2f6c9f59825a3d74c61370cdf47cd8a91f91ca546090b08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] b0e3123ba648a6419b9772fb0e3622ff5328f07576617ce104bf3f43ac6da5a6
[INFO] running `Command { std: "docker" "start" "-a" "b0e3123ba648a6419b9772fb0e3622ff5328f07576617ce104bf3f43ac6da5a6", kill_on_drop: false }`
[INFO] [stderr]     Checking half v1.6.0
[INFO] [stderr]     Checking oorandom v11.1.2
[INFO] [stderr]     Checking instant v0.1.8
[INFO] [stderr]     Checking futures-channel v0.3.8
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking serde_json v1.0.59
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_xorshift v0.2.0
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking plotters v0.2.15
[INFO] [stderr]     Checking tokio v0.2.23
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]     Checking failsafe v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking csv v1.1.4
[INFO] [stderr]     Checking tinytemplate v1.1.0
[INFO] [stderr]     Checking criterion v0.3.3
[INFO] [stderr]     Checking futures-executor v0.3.8
[INFO] [stderr]     Checking futures v0.3.8
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.50s
[INFO] running `Command { std: "docker" "inspect" "b0e3123ba648a6419b9772fb0e3622ff5328f07576617ce104bf3f43ac6da5a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0e3123ba648a6419b9772fb0e3622ff5328f07576617ce104bf3f43ac6da5a6", kill_on_drop: false }`
[INFO] [stdout] b0e3123ba648a6419b9772fb0e3622ff5328f07576617ce104bf3f43ac6da5a6