[INFO] fetching crate widget 0.0.0...
[INFO] checking widget-0.0.0 against try#de0e80659cee4f27282e60d63bbb8c5271a0d147 for pr-129392
[INFO] extracting crate widget 0.0.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate widget 0.0.0 on toolchain de0e80659cee4f27282e60d63bbb8c5271a0d147
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate widget 0.0.0
[INFO] finished tweaking crates.io crate widget 0.0.0
[INFO] tweaked toml for crates.io crate widget 0.0.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 05507a73b01e55aa78fe05ca5ae0ace53c1748183b1cc99006416bb0309b9fa3
[INFO] running `Command { std: "docker" "start" "-a" "05507a73b01e55aa78fe05ca5ae0ace53c1748183b1cc99006416bb0309b9fa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05507a73b01e55aa78fe05ca5ae0ace53c1748183b1cc99006416bb0309b9fa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05507a73b01e55aa78fe05ca5ae0ace53c1748183b1cc99006416bb0309b9fa3", kill_on_drop: false }`
[INFO] [stdout] 05507a73b01e55aa78fe05ca5ae0ace53c1748183b1cc99006416bb0309b9fa3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bbe3cc743d3cdfa36bb97e5c64b0b68a55d3c2143bd3b1b075e86999db40d4b1
[INFO] running `Command { std: "docker" "start" "-a" "bbe3cc743d3cdfa36bb97e5c64b0b68a55d3c2143bd3b1b075e86999db40d4b1", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking widget v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/split.rs:7:39
[INFO] [stdout]   |
[INFO] [stdout] 7 |                  W: DerefMut<Target = Widget<Ev, Surface, Output = A>>,
[INFO] [stdout]   |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |                  W: DerefMut<Target = dyn Widget<Ev, Surface, Output = A>>,
[INFO] [stdout]   |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/split.rs:21:27
[INFO] [stdout]    |
[INFO] [stdout] 21 |      W: DerefMut<Target = Widget<Ev, Surface, Output = A>>,
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 21 |      W: DerefMut<Target = dyn Widget<Ev, Surface, Output = A>>,
[INFO] [stdout]    |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/split.rs:7:39
[INFO] [stdout]   |
[INFO] [stdout] 7 |                  W: DerefMut<Target = Widget<Ev, Surface, Output = A>>,
[INFO] [stdout]   |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |                  W: DerefMut<Target = dyn Widget<Ev, Surface, Output = A>>,
[INFO] [stdout]   |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/split.rs:21:27
[INFO] [stdout]    |
[INFO] [stdout] 21 |      W: DerefMut<Target = Widget<Ev, Surface, Output = A>>,
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 21 |      W: DerefMut<Target = dyn Widget<Ev, Surface, Output = A>>,
[INFO] [stdout]    |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "bbe3cc743d3cdfa36bb97e5c64b0b68a55d3c2143bd3b1b075e86999db40d4b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbe3cc743d3cdfa36bb97e5c64b0b68a55d3c2143bd3b1b075e86999db40d4b1", kill_on_drop: false }`
[INFO] [stdout] bbe3cc743d3cdfa36bb97e5c64b0b68a55d3c2143bd3b1b075e86999db40d4b1