[INFO] fetching crate looper 0.0.2...
[INFO] checking looper-0.0.2 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate looper 0.0.2 into /workspace/builds/worker-54/source
[INFO] validating manifest of crates.io crate looper 0.0.2 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate looper 0.0.2
[INFO] finished tweaking crates.io crate looper 0.0.2
[INFO] tweaked toml for crates.io crate looper 0.0.2 written to /workspace/builds/worker-54/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "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-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0f20420d0faac7bbabab1d77f0f231b38242af93e7ffb112cd9d170da98c7d7a
[INFO] running `Command { std: "docker" "start" "-a" "0f20420d0faac7bbabab1d77f0f231b38242af93e7ffb112cd9d170da98c7d7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f20420d0faac7bbabab1d77f0f231b38242af93e7ffb112cd9d170da98c7d7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f20420d0faac7bbabab1d77f0f231b38242af93e7ffb112cd9d170da98c7d7a", kill_on_drop: false }`
[INFO] [stdout] 0f20420d0faac7bbabab1d77f0f231b38242af93e7ffb112cd9d170da98c7d7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37ac1a9b6afa12f8c29085ba6ce38ea43a10865c1066b86ae1c837a63c092fd8
[INFO] running `Command { std: "docker" "start" "-a" "37ac1a9b6afa12f8c29085ba6ce38ea43a10865c1066b86ae1c837a63c092fd8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking looper v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `update`
[INFO] [stdout]   --> src/realtime.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     update: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `update`
[INFO] [stdout]   --> src/realtime.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     update: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 0.53s
[INFO] running `Command { std: "docker" "inspect" "37ac1a9b6afa12f8c29085ba6ce38ea43a10865c1066b86ae1c837a63c092fd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37ac1a9b6afa12f8c29085ba6ce38ea43a10865c1066b86ae1c837a63c092fd8", kill_on_drop: false }`
[INFO] [stdout] 37ac1a9b6afa12f8c29085ba6ce38ea43a10865c1066b86ae1c837a63c092fd8