[INFO] fetching crate communicator1 0.1.0...
[INFO] checking communicator1-0.1.0 against try#f45c1ab62d4de6b63f69b4daa9d1f0b90c38a208 for pr-139419
[INFO] extracting crate communicator1 0.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate communicator1 0.1.0 on toolchain f45c1ab62d4de6b63f69b4daa9d1f0b90c38a208
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f45c1ab62d4de6b63f69b4daa9d1f0b90c38a208" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f45c1ab62d4de6b63f69b4daa9d1f0b90c38a208" "generate-lockfile" "--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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f45c1ab62d4de6b63f69b4daa9d1f0b90c38a208" "fetch" "--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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+f45c1ab62d4de6b63f69b4daa9d1f0b90c38a208" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4295079670feb3385168fcadbdd68821f544577934798cc344dc9607fa26e68
[INFO] running `Command { std: "docker" "start" "-a" "e4295079670feb3385168fcadbdd68821f544577934798cc344dc9607fa26e68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4295079670feb3385168fcadbdd68821f544577934798cc344dc9607fa26e68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4295079670feb3385168fcadbdd68821f544577934798cc344dc9607fa26e68", kill_on_drop: false }`
[INFO] [stdout] e4295079670feb3385168fcadbdd68821f544577934798cc344dc9607fa26e68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+f45c1ab62d4de6b63f69b4daa9d1f0b90c38a208" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c973842e146c9a540c70bd3501ce2ace09ad30b66ee95e0d8480212adae4cc2a
[INFO] running `Command { std: "docker" "start" "-a" "c973842e146c9a540c70bd3501ce2ace09ad30b66ee95e0d8480212adae4cc2a", kill_on_drop: false }`
[INFO] [stderr]     Checking communicator1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `connect` is never used
[INFO] [stdout]  --> src/network/mod.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn connect() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `connect` is never used
[INFO] [stdout]  --> src/network/server.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn connect() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `connect` is never used
[INFO] [stdout]  --> src/network/mod.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn connect() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `connect` is never used
[INFO] [stdout]  --> src/network/server.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn connect() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "c973842e146c9a540c70bd3501ce2ace09ad30b66ee95e0d8480212adae4cc2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c973842e146c9a540c70bd3501ce2ace09ad30b66ee95e0d8480212adae4cc2a", kill_on_drop: false }`
[INFO] [stdout] c973842e146c9a540c70bd3501ce2ace09ad30b66ee95e0d8480212adae4cc2a