[INFO] fetching crate smart 0.1.1...
[INFO] checking smart-0.1.1 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate smart 0.1.1 into /workspace/builds/worker-1-tc2/source
[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-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate smart 0.1.1 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be283735c89ce4a18305af21a831c496a4d816843e899ca5609000200b5ac2bc
[INFO] running `Command { std: "docker" "start" "-a" "be283735c89ce4a18305af21a831c496a4d816843e899ca5609000200b5ac2bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be283735c89ce4a18305af21a831c496a4d816843e899ca5609000200b5ac2bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be283735c89ce4a18305af21a831c496a4d816843e899ca5609000200b5ac2bc", kill_on_drop: false }`
[INFO] [stdout] be283735c89ce4a18305af21a831c496a4d816843e899ca5609000200b5ac2bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20eeda9c5f0ca3dca228120406dd80caf1f59f3a192a0dd603983ef30c40cd54
[INFO] running `Command { std: "docker" "start" "-a" "20eeda9c5f0ca3dca228120406dd80caf1f59f3a192a0dd603983ef30c40cd54", kill_on_drop: false }`
[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] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let _ = SyncPointer::from(SharedPointer::from(Rc::new(0)));
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `smart` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "20eeda9c5f0ca3dca228120406dd80caf1f59f3a192a0dd603983ef30c40cd54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20eeda9c5f0ca3dca228120406dd80caf1f59f3a192a0dd603983ef30c40cd54", kill_on_drop: false }`
[INFO] [stdout] 20eeda9c5f0ca3dca228120406dd80caf1f59f3a192a0dd603983ef30c40cd54