[INFO] fetching crate google-mirror1 2.0.4+20190424...
[INFO] checking google-mirror1-2.0.4+20190424 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate google-mirror1 2.0.4+20190424 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate google-mirror1 2.0.4+20190424 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate google-mirror1 2.0.4+20190424
[INFO] finished tweaking crates.io crate google-mirror1 2.0.4+20190424
[INFO] tweaked toml for crates.io crate google-mirror1 2.0.4+20190424 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da4236953bbb02c02805720e5a4c18561b305adb4012c795e03ea4f242012be4
[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" "da4236953bbb02c02805720e5a4c18561b305adb4012c795e03ea4f242012be4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da4236953bbb02c02805720e5a4c18561b305adb4012c795e03ea4f242012be4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da4236953bbb02c02805720e5a4c18561b305adb4012c795e03ea4f242012be4", kill_on_drop: false }`
[INFO] [stdout] da4236953bbb02c02805720e5a4c18561b305adb4012c795e03ea4f242012be4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "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] b8ee5398815cb267f665638d509fc9cf1445fa28872e2a071826c2d7a858b97c
[INFO] running `Command { std: "docker" "start" "-a" "b8ee5398815cb267f665638d509fc9cf1445fa28872e2a071826c2d7a858b97c", kill_on_drop: false }`
[INFO] [stderr]     Checking google-mirror1 v2.0.4+20190424 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `url`
[INFO] [stdout]     --> src/api.rs:5648:25
[INFO] [stdout]      |
[INFO] [stdout] 5648 |                     let url = upload_url.as_ref().and_then(|s| Some(url::Url::parse(s).unwrap())).unwrap();
[INFO] [stdout]      |                         ^^^ help: if this is intentional, prefix it with an underscore: `_url`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `url`
[INFO] [stdout]     --> src/api.rs:6743:25
[INFO] [stdout]      |
[INFO] [stdout] 6743 |                     let url = upload_url.as_ref().and_then(|s| Some(url::Url::parse(s).unwrap())).unwrap();
[INFO] [stdout]      |                         ^^^ help: if this is intentional, prefix it with an underscore: `_url`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `url`
[INFO] [stdout]     --> src/api.rs:7709:25
[INFO] [stdout]      |
[INFO] [stdout] 7709 |                     let url = upload_url.as_ref().and_then(|s| Some(url::Url::parse(s).unwrap())).unwrap();
[INFO] [stdout]      |                         ^^^ help: if this is intentional, prefix it with an underscore: `_url`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `url`
[INFO] [stdout]     --> src/api.rs:5648:25
[INFO] [stdout]      |
[INFO] [stdout] 5648 |                     let url = upload_url.as_ref().and_then(|s| Some(url::Url::parse(s).unwrap())).unwrap();
[INFO] [stdout]      |                         ^^^ help: if this is intentional, prefix it with an underscore: `_url`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `url`
[INFO] [stdout]     --> src/api.rs:6743:25
[INFO] [stdout]      |
[INFO] [stdout] 6743 |                     let url = upload_url.as_ref().and_then(|s| Some(url::Url::parse(s).unwrap())).unwrap();
[INFO] [stdout]      |                         ^^^ help: if this is intentional, prefix it with an underscore: `_url`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `url`
[INFO] [stdout]     --> src/api.rs:7709:25
[INFO] [stdout]      |
[INFO] [stdout] 7709 |                     let url = upload_url.as_ref().and_then(|s| Some(url::Url::parse(s).unwrap())).unwrap();
[INFO] [stdout]      |                         ^^^ help: if this is intentional, prefix it with an underscore: `_url`
[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 5.45s
[INFO] running `Command { std: "docker" "inspect" "b8ee5398815cb267f665638d509fc9cf1445fa28872e2a071826c2d7a858b97c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8ee5398815cb267f665638d509fc9cf1445fa28872e2a071826c2d7a858b97c", kill_on_drop: false }`
[INFO] [stdout] b8ee5398815cb267f665638d509fc9cf1445fa28872e2a071826c2d7a858b97c