[INFO] fetching crate graph 0.0.2...
[INFO] checking graph-0.0.2 against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] extracting crate graph 0.0.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate graph 0.0.2 on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate graph 0.0.2
[INFO] finished tweaking crates.io crate graph 0.0.2
[INFO] tweaked toml for crates.io crate graph 0.0.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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] 88bc10977ae210879a75d6e0a046cd16ae235601d9c1d2fd74d0a1d2892915d9
[INFO] running `Command { std: "docker" "start" "-a" "88bc10977ae210879a75d6e0a046cd16ae235601d9c1d2fd74d0a1d2892915d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88bc10977ae210879a75d6e0a046cd16ae235601d9c1d2fd74d0a1d2892915d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88bc10977ae210879a75d6e0a046cd16ae235601d9c1d2fd74d0a1d2892915d9", kill_on_drop: false }`
[INFO] [stdout] 88bc10977ae210879a75d6e0a046cd16ae235601d9c1d2fd74d0a1d2892915d9
[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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e61d222315a1dd3a86ae4932e97c22faa0cec394df24a6c52b5cdf32ac72318
[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" "0e61d222315a1dd3a86ae4932e97c22faa0cec394df24a6c52b5cdf32ac72318", kill_on_drop: false }`
[INFO] [stderr]     Checking graph v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `Node`
[INFO] [stdout]  --> src/lib.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Node;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Edge`
[INFO] [stdout]  --> src/lib.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Edge;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Graph`
[INFO] [stdout]  --> src/lib.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Graph;
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Node`
[INFO] [stdout]  --> src/lib.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Node;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Edge`
[INFO] [stdout]  --> src/lib.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Edge;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Graph`
[INFO] [stdout]  --> src/lib.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Graph;
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "0e61d222315a1dd3a86ae4932e97c22faa0cec394df24a6c52b5cdf32ac72318", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e61d222315a1dd3a86ae4932e97c22faa0cec394df24a6c52b5cdf32ac72318", kill_on_drop: false }`
[INFO] [stdout] 0e61d222315a1dd3a86ae4932e97c22faa0cec394df24a6c52b5cdf32ac72318