[INFO] fetching crate smart 0.1.1...
[INFO] testing smart-0.1.1 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate smart 0.1.1 into /workspace/builds/worker-0-tc1/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-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate smart 0.1.1 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "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" "+caccb4d0368bd918ef6668af8e13834d07040417" "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" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3022201f7eb6638a5a106f20eaf53d4ff5da2978e6e58a6ed29d26eaebc29a89
[INFO] running `Command { std: "docker" "start" "-a" "3022201f7eb6638a5a106f20eaf53d4ff5da2978e6e58a6ed29d26eaebc29a89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3022201f7eb6638a5a106f20eaf53d4ff5da2978e6e58a6ed29d26eaebc29a89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3022201f7eb6638a5a106f20eaf53d4ff5da2978e6e58a6ed29d26eaebc29a89", kill_on_drop: false }`
[INFO] [stdout] 3022201f7eb6638a5a106f20eaf53d4ff5da2978e6e58a6ed29d26eaebc29a89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce413512e4180b668a3854eab4cffd7f2948ed2187a1cd11ca4826ffe88dd388
[INFO] running `Command { std: "docker" "start" "-a" "ce413512e4180b668a3854eab4cffd7f2948ed2187a1cd11ca4826ffe88dd388", kill_on_drop: false }`
[INFO] [stderr]    Compiling smart v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "ce413512e4180b668a3854eab4cffd7f2948ed2187a1cd11ca4826ffe88dd388", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce413512e4180b668a3854eab4cffd7f2948ed2187a1cd11ca4826ffe88dd388", kill_on_drop: false }`
[INFO] [stdout] ce413512e4180b668a3854eab4cffd7f2948ed2187a1cd11ca4826ffe88dd388
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b1dad1310619edca5a12342458b37ddf9f0c9030f7145abcd793671371ce952
[INFO] running `Command { std: "docker" "start" "-a" "2b1dad1310619edca5a12342458b37ddf9f0c9030f7145abcd793671371ce952", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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" "2b1dad1310619edca5a12342458b37ddf9f0c9030f7145abcd793671371ce952", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b1dad1310619edca5a12342458b37ddf9f0c9030f7145abcd793671371ce952", kill_on_drop: false }`
[INFO] [stdout] 2b1dad1310619edca5a12342458b37ddf9f0c9030f7145abcd793671371ce952