[INFO] cloning repository https://github.com/localghost/membership
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/localghost/membership" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flocalghost%2Fmembership", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flocalghost%2Fmembership'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 071c0571aa0a84607b02385b515f80e7f1d6e683
[INFO] checking localghost/membership against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flocalghost%2Fmembership" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/localghost/membership 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 git repo https://github.com/localghost/membership
[INFO] finished tweaking git repo https://github.com/localghost/membership
[INFO] tweaked toml for git repo https://github.com/localghost/membership written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/localghost/membership 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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 7d39373105d48a2a5092e5134da5ca8f2f9d9e2e571ce8d2968d74b655632495
[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" "7d39373105d48a2a5092e5134da5ca8f2f9d9e2e571ce8d2968d74b655632495", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d39373105d48a2a5092e5134da5ca8f2f9d9e2e571ce8d2968d74b655632495", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d39373105d48a2a5092e5134da5ca8f2f9d9e2e571ce8d2968d74b655632495", kill_on_drop: false }`
[INFO] [stdout] 7d39373105d48a2a5092e5134da5ca8f2f9d9e2e571ce8d2968d74b655632495
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 5e4b9ec82d8df2c79abacc5126cb3b42db38c9294c74f35fdf007f8890b494a3
[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" "5e4b9ec82d8df2c79abacc5126cb3b42db38c9294c74f35fdf007f8890b494a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling bitflags v1.0.5
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]    Compiling nix v0.7.0
[INFO] [stderr]     Checking crossbeam-utils v0.7.0
[INFO] [stderr]     Checking libflate v0.1.27
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking getrandom v0.1.12
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]     Checking slog-scope v4.3.0
[INFO] [stderr]     Checking backtrace v0.3.37
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking slog-kvfilter v0.7.0
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]     Checking slog-stdlog v3.0.5
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand_pcg v0.2.0
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking sha-1 v0.8.1
[INFO] [stderr]     Checking rand v0.7.1
[INFO] [stderr]     Checking slog-async v2.5.0
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking slog-term v2.5.0
[INFO] [stderr]     Checking iptables v0.2.2
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling trackable_derive v0.1.2
[INFO] [stderr]    Compiling structopt-derive v0.2.15
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking trackable v0.2.23
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking sloggers v0.3.6
[INFO] [stderr]     Checking structopt v0.2.15
[INFO] [stderr]     Checking membership v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]    --> src/message_encoder.rs:343:9
[INFO] [stdout]     |
[INFO] [stdout] 343 |     use std::str::FromStr;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `buffer`
[INFO] [stdout]    --> src/message_encoder.rs:346:9
[INFO] [stdout]     |
[INFO] [stdout] 346 |         buffer: Limit<BytesMut>,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.08s
[INFO] running `Command { std: "docker" "inspect" "5e4b9ec82d8df2c79abacc5126cb3b42db38c9294c74f35fdf007f8890b494a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e4b9ec82d8df2c79abacc5126cb3b42db38c9294c74f35fdf007f8890b494a3", kill_on_drop: false }`
[INFO] [stdout] 5e4b9ec82d8df2c79abacc5126cb3b42db38c9294c74f35fdf007f8890b494a3