[INFO] fetching crate cb2_core 0.1.2...
[INFO] checking cb2_core-0.1.2 against beta for pr-78714
[INFO] extracting crate cb2_core 0.1.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate cb2_core 0.1.2 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 cb2_core 0.1.2
[INFO] finished tweaking crates.io crate cb2_core 0.1.2
[INFO] tweaked toml for crates.io crate cb2_core 0.1.2 written to /workspace/builds/worker-0/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] 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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 1da8a2307c50b7e34db137a5f96f3e23076f60592f5d45b1868e37035fa9ba96
[INFO] running `Command { std: "docker" "start" "-a" "1da8a2307c50b7e34db137a5f96f3e23076f60592f5d45b1868e37035fa9ba96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1da8a2307c50b7e34db137a5f96f3e23076f60592f5d45b1868e37035fa9ba96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1da8a2307c50b7e34db137a5f96f3e23076f60592f5d45b1868e37035fa9ba96", kill_on_drop: false }`
[INFO] [stdout] 1da8a2307c50b7e34db137a5f96f3e23076f60592f5d45b1868e37035fa9ba96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 91d28e7a2f3a92718360201760cdaa655efab2590c94b26cbf1f985c72475bda
[INFO] running `Command { std: "docker" "start" "-a" "91d28e7a2f3a92718360201760cdaa655efab2590c94b26cbf1f985c72475bda", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.35
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking signal-hook-registry v1.2.2
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking from_file v0.1.3
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-signal v0.2.9
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio-process v0.2.5
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]    Compiling from_file_derive v0.1.3
[INFO] [stderr]     Checking cb2_core v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/exec.rs:13:26
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type FutureSig = Box<Future<Item = Result<Report, Report>, Error = Report> + Send>;
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = Result<Report, Report>, Error = Report> + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/exec.rs:13:26
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type FutureSig = Box<Future<Item = Result<Report, Report>, Error = Report> + Send>;
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = Result<Report, Report>, Error = Report> + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.20s
[INFO] running `Command { std: "docker" "inspect" "91d28e7a2f3a92718360201760cdaa655efab2590c94b26cbf1f985c72475bda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91d28e7a2f3a92718360201760cdaa655efab2590c94b26cbf1f985c72475bda", kill_on_drop: false }`
[INFO] [stdout] 91d28e7a2f3a92718360201760cdaa655efab2590c94b26cbf1f985c72475bda