[INFO] fetching crate downcast 0.10.0...
[INFO] checking downcast-0.10.0 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate downcast 0.10.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate downcast 0.10.0 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate downcast 0.10.0
[INFO] finished tweaking crates.io crate downcast 0.10.0
[INFO] tweaked toml for crates.io crate downcast 0.10.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 651daf91ad1c3566a8e88bf8aa3c760d6412ccaf5225df3958de2b22109794e4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "651daf91ad1c3566a8e88bf8aa3c760d6412ccaf5225df3958de2b22109794e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "651daf91ad1c3566a8e88bf8aa3c760d6412ccaf5225df3958de2b22109794e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "651daf91ad1c3566a8e88bf8aa3c760d6412ccaf5225df3958de2b22109794e4", kill_on_drop: false }`
[INFO] [stdout] 651daf91ad1c3566a8e88bf8aa3c760d6412ccaf5225df3958de2b22109794e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 99504a784c1808dd420049a27bebbeb270e6d8fc00ccfdc9191c76fc71a10ce0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "99504a784c1808dd420049a27bebbeb270e6d8fc00ccfdc9191c76fc71a10ce0", kill_on_drop: false }`
[INFO] [stderr]     Checking downcast v0.10.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:406:20
[INFO] [stdout]     |
[INFO] [stdout] 406 |     impl_downcast!(Any);
[INFO] [stdout]     |                    ^^^ help: use `dyn`: `dyn Any`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:407:21
[INFO] [stdout]     |
[INFO] [stdout] 407 |     impl_downcast!((Any + Send));
[INFO] [stdout]     |                     ^^^^^^^^^^ help: use `dyn`: `dyn Any + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:408:21
[INFO] [stdout]     |
[INFO] [stdout] 408 |     impl_downcast!((Any + Sync));
[INFO] [stdout]     |                     ^^^^^^^^^^ help: use `dyn`: `dyn Any + Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:409:21
[INFO] [stdout]     |
[INFO] [stdout] 409 |     impl_downcast!((Any + Send + Sync));
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Any + Send + Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:406:20
[INFO] [stdout]     |
[INFO] [stdout] 406 |     impl_downcast!(Any);
[INFO] [stdout]     |                    ^^^ help: use `dyn`: `dyn Any`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:407:21
[INFO] [stdout]     |
[INFO] [stdout] 407 |     impl_downcast!((Any + Send));
[INFO] [stdout]     |                     ^^^^^^^^^^ help: use `dyn`: `dyn Any + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:408:21
[INFO] [stdout]     |
[INFO] [stdout] 408 |     impl_downcast!((Any + Sync));
[INFO] [stdout]     |                     ^^^^^^^^^^ help: use `dyn`: `dyn Any + Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:409:21
[INFO] [stdout]     |
[INFO] [stdout] 409 |     impl_downcast!((Any + Send + Sync));
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Any + Send + Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:102:51
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn description(&self) -> &str { self.mismatch.description() }
[INFO] [stdout]     |                                                   ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:102:51
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn description(&self) -> &str { self.mismatch.description() }
[INFO] [stdout]     |                                                   ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> examples/simple.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | downcast!(Animal);
[INFO] [stdout]    |           ^^^^^^ help: use `dyn`: `dyn Animal`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> examples/simple.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | downcast!(Animal);
[INFO] [stdout]    |           ^^^^^^ help: use `dyn`: `dyn Animal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> examples/simple.rs:27:21
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let animal: Box<Animal> = Box::new(Bird);
[INFO] [stdout]    |                     ^^^^^^ help: use `dyn`: `dyn Animal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> tests/tests.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | downcast!(Simple);
[INFO] [stdout]   |           ^^^^^^ help: use `dyn`: `dyn Simple`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> tests/tests.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | downcast!(Simple);
[INFO] [stdout]   |           ^^^^^^ help: use `dyn`: `dyn Simple`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> tests/tests.rs:9:18
[INFO] [stdout]   |
[INFO] [stdout] 9 | downcast!(<T, U> WithParams<T, U>);
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn WithParams<T, U>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> tests/tests.rs:25:20
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut a: Box<Simple> = Box::new(ImplA{ data: "data".into() });
[INFO] [stdout]    |                    ^^^^^^ help: use `dyn`: `dyn Simple`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> tests/tests.rs:38:20
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let mut a: Box<WithParams<Param1, Param2>> = Box::new(ImplA{ data: "data".into() });
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn WithParams<Param1, Param2>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> examples/with_params.rs:11:15
[INFO] [stdout]    |
[INFO] [stdout] 11 | downcast!(<X> Animal<X> where X: Debug);
[INFO] [stdout]    |               ^^^^^^^^^ help: use `dyn`: `dyn Animal<X>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> examples/with_params.rs:11:15
[INFO] [stdout]    |
[INFO] [stdout] 11 | downcast!(<X> Animal<X> where X: Debug);
[INFO] [stdout]    |               ^^^^^^^^^ help: use `dyn`: `dyn Animal<X>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> examples/with_params.rs:28:21
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let animal: Box<Animal<usize>> = Box::new(Bird);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn Animal<usize>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "99504a784c1808dd420049a27bebbeb270e6d8fc00ccfdc9191c76fc71a10ce0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99504a784c1808dd420049a27bebbeb270e6d8fc00ccfdc9191c76fc71a10ce0", kill_on_drop: false }`
[INFO] [stdout] 99504a784c1808dd420049a27bebbeb270e6d8fc00ccfdc9191c76fc71a10ce0