[INFO] fetching crate pebble-rust 0.1.0...
[INFO] checking pebble-rust-0.1.0 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate pebble-rust 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate pebble-rust 0.1.0 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", 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-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb9d790b4c2e7338a9c33e9802f14fc7bdfdc1b290c5c9e28ce7ba885de2f358
[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" "bb9d790b4c2e7338a9c33e9802f14fc7bdfdc1b290c5c9e28ce7ba885de2f358", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb9d790b4c2e7338a9c33e9802f14fc7bdfdc1b290c5c9e28ce7ba885de2f358", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb9d790b4c2e7338a9c33e9802f14fc7bdfdc1b290c5c9e28ce7ba885de2f358", kill_on_drop: false }`
[INFO] [stdout] bb9d790b4c2e7338a9c33e9802f14fc7bdfdc1b290c5c9e28ce7ba885de2f358
[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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af51be39992e922553a1b5ec71b6eda90bfb71f5f8b8c5dd0e27c3c16c0fa1f6
[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" "af51be39992e922553a1b5ec71b6eda90bfb71f5f8b8c5dd0e27c3c16c0fa1f6", kill_on_drop: false }`
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 35 | |     loop {}
[INFO] [stdout] 36 | | }
[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/f6e2f78768c57172b99c3e85892f867894dc7e30/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-afd4b9aba051f3ad.rlib
[INFO] [stdout]    = note: second definition in the local crate (`pebble_rust`)
[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`.
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "af51be39992e922553a1b5ec71b6eda90bfb71f5f8b8c5dd0e27c3c16c0fa1f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af51be39992e922553a1b5ec71b6eda90bfb71f5f8b8c5dd0e27c3c16c0fa1f6", kill_on_drop: false }`
[INFO] [stdout] af51be39992e922553a1b5ec71b6eda90bfb71f5f8b8c5dd0e27c3c16c0fa1f6