[INFO] fetching crate tracing-core 0.1.17...
[INFO] checking tracing-core-0.1.17 against try#7b3565da729099dbe807466fcd118fb2815986e0 for pr-81789
[INFO] extracting crate tracing-core 0.1.17 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate tracing-core 0.1.17 on toolchain 7b3565da729099dbe807466fcd118fb2815986e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tracing-core 0.1.17
[INFO] finished tweaking crates.io crate tracing-core 0.1.17
[INFO] tweaked toml for crates.io crate tracing-core 0.1.17 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1b0cac48684f6c13d16b6800cbed0b7bd45b9d6c26cab62e87d5c522cc576163
[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" "1b0cac48684f6c13d16b6800cbed0b7bd45b9d6c26cab62e87d5c522cc576163", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b0cac48684f6c13d16b6800cbed0b7bd45b9d6c26cab62e87d5c522cc576163", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b0cac48684f6c13d16b6800cbed0b7bd45b9d6c26cab62e87d5c522cc576163", kill_on_drop: false }`
[INFO] [stdout] 1b0cac48684f6c13d16b6800cbed0b7bd45b9d6c26cab62e87d5c522cc576163
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b372a5df364b98d682c086393a7cec550a9e758995fc99f658449669bdfe221
[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" "1b372a5df364b98d682c086393a7cec550a9e758995fc99f658449669bdfe221", kill_on_drop: false }`
[INFO] [stderr]     Checking tracing-core v0.1.17 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/dispatcher.rs:283:20
[INFO] [stdout]     |
[INFO] [stdout] 283 |     if GLOBAL_INIT.compare_and_swap(UNINITIALIZED, INITIALIZING, Ordering::SeqCst) == UNINITIALIZED
[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]    --> src/dispatcher.rs:635:9
[INFO] [stdout]     |
[INFO] [stdout] 635 |         Subscriber::is::<T>(&*self.subscriber)
[INFO] [stdout]     |         ^^^^^^^^^^ help: use `dyn`: `<dyn Subscriber>`
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:98:5
[INFO] [stdout]     |
[INFO] [stdout] 98  |     rust_2018_idioms,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` implied by `#[warn(rust_2018_idioms)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/dispatcher.rs:642:9
[INFO] [stdout]     |
[INFO] [stdout] 642 |         Subscriber::downcast_ref(&*self.subscriber)
[INFO] [stdout]     |         ^^^^^^^^^^ help: use `dyn`: `<dyn Subscriber>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/dispatcher.rs:283:20
[INFO] [stdout]     |
[INFO] [stdout] 283 |     if GLOBAL_INIT.compare_and_swap(UNINITIALIZED, INITIALIZING, Ordering::SeqCst) == UNINITIALIZED
[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]    --> src/dispatcher.rs:635:9
[INFO] [stdout]     |
[INFO] [stdout] 635 |         Subscriber::is::<T>(&*self.subscriber)
[INFO] [stdout]     |         ^^^^^^^^^^ help: use `dyn`: `<dyn Subscriber>`
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:98:5
[INFO] [stdout]     |
[INFO] [stdout] 98  |     rust_2018_idioms,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` implied by `#[warn(rust_2018_idioms)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/dispatcher.rs:642:9
[INFO] [stdout]     |
[INFO] [stdout] 642 |         Subscriber::downcast_ref(&*self.subscriber)
[INFO] [stdout]     |         ^^^^^^^^^^ help: use `dyn`: `<dyn Subscriber>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `Command { std: "docker" "inspect" "1b372a5df364b98d682c086393a7cec550a9e758995fc99f658449669bdfe221", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b372a5df364b98d682c086393a7cec550a9e758995fc99f658449669bdfe221", kill_on_drop: false }`
[INFO] [stdout] 1b372a5df364b98d682c086393a7cec550a9e758995fc99f658449669bdfe221