[INFO] fetching crate os_utils 0.0.1...
[INFO] checking os_utils-0.0.1 against master#7f5a42b073dc2bee2aa625052eb066ee07072048 for pr-78991
[INFO] extracting crate os_utils 0.0.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate os_utils 0.0.1 on toolchain 7f5a42b073dc2bee2aa625052eb066ee07072048
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate os_utils 0.0.1
[INFO] finished tweaking crates.io crate os_utils 0.0.1
[INFO] tweaked toml for crates.io crate os_utils 0.0.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4ea8f8b32fa1667ecba92151b3cc49307fed1058359714aa07812b9c38091c1
[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" "a4ea8f8b32fa1667ecba92151b3cc49307fed1058359714aa07812b9c38091c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4ea8f8b32fa1667ecba92151b3cc49307fed1058359714aa07812b9c38091c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4ea8f8b32fa1667ecba92151b3cc49307fed1058359714aa07812b9c38091c1", kill_on_drop: false }`
[INFO] [stdout] a4ea8f8b32fa1667ecba92151b3cc49307fed1058359714aa07812b9c38091c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 512d8c2d2b771121ae8df074833686f3585c5e21ac47ceb3be00c9131035d618
[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" "512d8c2d2b771121ae8df074833686f3585c5e21ac47ceb3be00c9131035d618", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking os_utils v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `info`
[INFO] [stdout]    --> src/info/mod.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 113 |         let info = OsInfo::get();
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_info`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "512d8c2d2b771121ae8df074833686f3585c5e21ac47ceb3be00c9131035d618", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "512d8c2d2b771121ae8df074833686f3585c5e21ac47ceb3be00c9131035d618", kill_on_drop: false }`
[INFO] [stdout] 512d8c2d2b771121ae8df074833686f3585c5e21ac47ceb3be00c9131035d618