[INFO] fetching crate pebble-rust 0.1.0...
[INFO] checking pebble-rust-0.1.0 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate pebble-rust 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate pebble-rust 0.1.0 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pebble-rust 0.1.0
[INFO] finished tweaking crates.io crate pebble-rust 0.1.0
[INFO] tweaked toml for crates.io crate pebble-rust 0.1.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3d28338f5209b95a28d331cabec91930b78f9e8fb3dfd05d07240cfa1ab54d7a
[INFO] running `Command { std: "docker" "start" "-a" "3d28338f5209b95a28d331cabec91930b78f9e8fb3dfd05d07240cfa1ab54d7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d28338f5209b95a28d331cabec91930b78f9e8fb3dfd05d07240cfa1ab54d7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d28338f5209b95a28d331cabec91930b78f9e8fb3dfd05d07240cfa1ab54d7a", kill_on_drop: false }`
[INFO] [stdout] 3d28338f5209b95a28d331cabec91930b78f9e8fb3dfd05d07240cfa1ab54d7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b4aece78a7763c8b362eb8c8507ce49b811328645dc43e2b9040ac63539bebd
[INFO] running `Command { std: "docker" "start" "-a" "3b4aece78a7763c8b362eb8c8507ce49b811328645dc43e2b9040ac63539bebd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking pebble-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pebble/layer.rs:39:33
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn add_child(&self, layer: &ILayer);
[INFO] [stdout]    |                                 ^^^^^^ help: use `dyn`: `dyn ILayer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pebble/layer.rs:53:33
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn add_child(&self, layer: &ILayer) {
[INFO] [stdout]    |                                 ^^^^^^ help: use `dyn`: `dyn ILayer`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pebble/layer.rs:89:33
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn add_child(&self, layer: &ILayer) {
[INFO] [stdout]    |                                 ^^^^^^ help: use `dyn`: `dyn ILayer`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pebble/layer.rs:126:33
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn add_child(&self, layer: &ILayer) {
[INFO] [stdout]     |                                 ^^^^^^ help: use `dyn`: `dyn ILayer`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pebble/layer.rs:39:33
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn add_child(&self, layer: &ILayer);
[INFO] [stdout]    |                                 ^^^^^^ help: use `dyn`: `dyn ILayer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pebble/layer.rs:53:33
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn add_child(&self, layer: &ILayer) {
[INFO] [stdout]    |                                 ^^^^^^ help: use `dyn`: `dyn ILayer`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pebble/layer.rs:89:33
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn add_child(&self, layer: &ILayer) {
[INFO] [stdout]    |                                 ^^^^^^ help: use `dyn`: `dyn ILayer`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pebble/layer.rs:126:33
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn add_child(&self, layer: &ILayer) {
[INFO] [stdout]     |                                 ^^^^^^ help: use `dyn`: `dyn ILayer`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/pebble/mod.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn panic(_info: &core::panic::PanicInfo) -> ! {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stdout]    = note: first definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1a95cddb5b8aaf6b.rlib
[INFO] [stdout]    = note: second definition in the local crate (`pebble_rust`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pebble-rust` due to 2 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "3b4aece78a7763c8b362eb8c8507ce49b811328645dc43e2b9040ac63539bebd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b4aece78a7763c8b362eb8c8507ce49b811328645dc43e2b9040ac63539bebd", kill_on_drop: false }`
[INFO] [stdout] 3b4aece78a7763c8b362eb8c8507ce49b811328645dc43e2b9040ac63539bebd