[INFO] fetching crate slog-struct-diff 0.1.0...
[INFO] checking slog-struct-diff-0.1.0 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate slog-struct-diff 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate slog-struct-diff 0.1.0 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate slog-struct-diff 0.1.0
[INFO] finished tweaking crates.io crate slog-struct-diff 0.1.0
[INFO] tweaked toml for crates.io crate slog-struct-diff 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stdout] fbf7a26f19249d18ded5355c3a11dbdef6a107c13d54c3753394b42ed9ab8871
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "fbf7a26f19249d18ded5355c3a11dbdef6a107c13d54c3753394b42ed9ab8871"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking struct-diff v0.2.3
[INFO] [stderr]     Checking slog-struct-diff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `Diff`
[INFO] [stderr]  --> src/lib.rs:4:19
[INFO] [stderr]   |
[INFO] [stderr] 4 | use struct_diff::{Diff, Difference};
[INFO] [stderr]   |                   ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:15:26
[INFO] [stderr]    |
[INFO] [stderr] 15 |         serializer: &mut Serializer,
[INFO] [stderr]    |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[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:28:26
[INFO] [stderr]    |
[INFO] [stderr] 28 |         serializer: &mut Serializer,
[INFO] [stderr]    |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Diff`
[INFO] [stderr]  --> src/lib.rs:4:19
[INFO] [stderr]   |
[INFO] [stderr] 4 | use struct_diff::{Diff, Difference};
[INFO] [stderr]   |                   ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:15:26
[INFO] [stderr]    |
[INFO] [stderr] 15 |         serializer: &mut Serializer,
[INFO] [stderr]    |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[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:28:26
[INFO] [stderr]    |
[INFO] [stderr] 28 |         serializer: &mut Serializer,
[INFO] [stderr]    |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `"docker" "inspect" "fbf7a26f19249d18ded5355c3a11dbdef6a107c13d54c3753394b42ed9ab8871"`
[INFO] running `"docker" "rm" "-f" "fbf7a26f19249d18ded5355c3a11dbdef6a107c13d54c3753394b42ed9ab8871"`
[INFO] [stdout] fbf7a26f19249d18ded5355c3a11dbdef6a107c13d54c3753394b42ed9ab8871