[INFO] fetching crate os_utils 0.0.1...
[INFO] checking os_utils-0.0.1 against try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846
[INFO] extracting crate os_utils 0.0.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate os_utils 0.0.1 on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "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-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cocoa v0.18.5
[INFO] [stderr]   Downloaded core-graphics v0.17.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e308c15048fb610038c68fab43b8e59fb9c0b4e09b19f603e086b4031c90edf3
[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" "e308c15048fb610038c68fab43b8e59fb9c0b4e09b19f603e086b4031c90edf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e308c15048fb610038c68fab43b8e59fb9c0b4e09b19f603e086b4031c90edf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e308c15048fb610038c68fab43b8e59fb9c0b4e09b19f603e086b4031c90edf3", kill_on_drop: false }`
[INFO] [stdout] e308c15048fb610038c68fab43b8e59fb9c0b4e09b19f603e086b4031c90edf3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fbcdb81501a186d4d348fbd6d069e1da1e9c6ccc02905da3d4c46b0d26d9ccc5
[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" "fbcdb81501a186d4d348fbd6d069e1da1e9c6ccc02905da3d4c46b0d26d9ccc5", 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 0.95s
[INFO] running `Command { std: "docker" "inspect" "fbcdb81501a186d4d348fbd6d069e1da1e9c6ccc02905da3d4c46b0d26d9ccc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbcdb81501a186d4d348fbd6d069e1da1e9c6ccc02905da3d4c46b0d26d9ccc5", kill_on_drop: false }`
[INFO] [stdout] fbcdb81501a186d4d348fbd6d069e1da1e9c6ccc02905da3d4c46b0d26d9ccc5