[INFO] fetching crate traitcast_core 0.2.0...
[INFO] checking traitcast_core-0.2.0 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate traitcast_core 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate traitcast_core 0.2.0 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate traitcast_core 0.2.0
[INFO] finished tweaking crates.io crate traitcast_core 0.2.0
[INFO] tweaked toml for crates.io crate traitcast_core 0.2.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 251d5d61a6538038c4543ecd1b40b5c2d524295c92e518d6127aaa3da4dad3b9
[INFO] running `"docker" "start" "-a" "251d5d61a6538038c4543ecd1b40b5c2d524295c92e518d6127aaa3da4dad3b9"`
[INFO] [stderr]     Checking traitcast_core v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:140:26
[INFO] [stderr]     |
[INFO] [stderr] 140 |     pub cast_box: fn(Box<Any>) -> Result<Box<DynTrait>, Box<Any>>,
[INFO] [stderr]     |                          ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:140:61
[INFO] [stderr]     |
[INFO] [stderr] 140 |     pub cast_box: fn(Box<Any>) -> Result<Box<DynTrait>, Box<Any>>,
[INFO] [stderr]     |                                                             ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr]    Compiling ghost v0.1.1
[INFO] [stderr]    Compiling ctor v0.1.12
[INFO] [stderr]    Compiling inventory-impl v0.1.4
[INFO] [stderr]     Checking inventory v0.1.4
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:140:26
[INFO] [stderr]     |
[INFO] [stderr] 140 |     pub cast_box: fn(Box<Any>) -> Result<Box<DynTrait>, Box<Any>>,
[INFO] [stderr]     |                          ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:140:61
[INFO] [stderr]     |
[INFO] [stderr] 140 |     pub cast_box: fn(Box<Any>) -> Result<Box<DynTrait>, Box<Any>>,
[INFO] [stderr]     |                                                             ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.36s
[INFO] running `"docker" "inspect" "251d5d61a6538038c4543ecd1b40b5c2d524295c92e518d6127aaa3da4dad3b9"`
[INFO] running `"docker" "rm" "-f" "251d5d61a6538038c4543ecd1b40b5c2d524295c92e518d6127aaa3da4dad3b9"`
[INFO] [stdout] 251d5d61a6538038c4543ecd1b40b5c2d524295c92e518d6127aaa3da4dad3b9