[INFO] fetching crate communicator1 0.1.0...
[INFO] checking communicator1-0.1.0 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate communicator1 0.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate communicator1 0.1.0 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate communicator1 0.1.0
[INFO] finished tweaking crates.io crate communicator1 0.1.0
[INFO] tweaked toml for crates.io crate communicator1 0.1.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b184e378f4bc5ab020d7a5309c98737698aa8392858495276561f74d516b7cf7
[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" "b184e378f4bc5ab020d7a5309c98737698aa8392858495276561f74d516b7cf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b184e378f4bc5ab020d7a5309c98737698aa8392858495276561f74d516b7cf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b184e378f4bc5ab020d7a5309c98737698aa8392858495276561f74d516b7cf7", kill_on_drop: false }`
[INFO] [stdout] b184e378f4bc5ab020d7a5309c98737698aa8392858495276561f74d516b7cf7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "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] aa4f617122975a7dc19e92b5d04b645738cb7af536df3f720a15be8259808d7f
[INFO] running `Command { std: "docker" "start" "-a" "aa4f617122975a7dc19e92b5d04b645738cb7af536df3f720a15be8259808d7f", kill_on_drop: false }`
[INFO] [stderr]     Checking communicator1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `connect`
[INFO] [stdout]  --> src/network/server.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn connect() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `connect`
[INFO] [stdout]  --> src/network/mod.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn connect() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `connect`
[INFO] [stdout]  --> src/network/server.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn connect() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `connect`
[INFO] [stdout]  --> src/network/mod.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn connect() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "aa4f617122975a7dc19e92b5d04b645738cb7af536df3f720a15be8259808d7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa4f617122975a7dc19e92b5d04b645738cb7af536df3f720a15be8259808d7f", kill_on_drop: false }`
[INFO] [stdout] aa4f617122975a7dc19e92b5d04b645738cb7af536df3f720a15be8259808d7f