[INFO] fetching crate smart 0.1.1...
[INFO] checking smart-0.1.1 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate smart 0.1.1 into /workspace/builds/worker-102/source
[INFO] validating manifest of crates.io crate smart 0.1.1 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate smart 0.1.1
[INFO] finished tweaking crates.io crate smart 0.1.1
[INFO] tweaked toml for crates.io crate smart 0.1.1 written to /workspace/builds/worker-102/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 18dba3f46056ee314a034e25d63a1343733a5f29a26e523c6f487d3a8d9744dd
[INFO] running `Command { std: "docker" "start" "-a" "18dba3f46056ee314a034e25d63a1343733a5f29a26e523c6f487d3a8d9744dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18dba3f46056ee314a034e25d63a1343733a5f29a26e523c6f487d3a8d9744dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18dba3f46056ee314a034e25d63a1343733a5f29a26e523c6f487d3a8d9744dd", kill_on_drop: false }`
[INFO] [stdout] 18dba3f46056ee314a034e25d63a1343733a5f29a26e523c6f487d3a8d9744dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ea88712909a281ea437f0b54919ab4ed16de9dc071aa18c0c16b0e752222397
[INFO] running `Command { std: "docker" "start" "-a" "0ea88712909a281ea437f0b54919ab4ed16de9dc071aa18c0c16b0e752222397", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking smart v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: unused return value of `from` that must be used
[INFO] [stdout]   --> src/tests.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     SyncPointer::from(SharedPointer::from(Rc::new(0)));
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![deny(warnings, missing_docs)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_must_use)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `smart` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "0ea88712909a281ea437f0b54919ab4ed16de9dc071aa18c0c16b0e752222397", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ea88712909a281ea437f0b54919ab4ed16de9dc071aa18c0c16b0e752222397", kill_on_drop: false }`
[INFO] [stdout] 0ea88712909a281ea437f0b54919ab4ed16de9dc071aa18c0c16b0e752222397