[INFO] fetching crate json 0.12.4...
[INFO] checking json-0.12.4 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate json 0.12.4 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate json 0.12.4 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate json 0.12.4
[INFO] finished tweaking crates.io crate json 0.12.4
[INFO] tweaked toml for crates.io crate json 0.12.4 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0cc8f0e4e5e10ed1e20665ae0ded6910878d76d862cabb77212d23f38d426ccd
[INFO] running `Command { std: "docker" "start" "-a" "0cc8f0e4e5e10ed1e20665ae0ded6910878d76d862cabb77212d23f38d426ccd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cc8f0e4e5e10ed1e20665ae0ded6910878d76d862cabb77212d23f38d426ccd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cc8f0e4e5e10ed1e20665ae0ded6910878d76d862cabb77212d23f38d426ccd", kill_on_drop: false }`
[INFO] [stdout] 0cc8f0e4e5e10ed1e20665ae0ded6910878d76d862cabb77212d23f38d426ccd
[INFO] running `Command { std: "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" "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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6217008f5af5a385b598dcf0ceef361b764fd56a7c2fcdc60bb8928eb0390ac5
[INFO] running `Command { std: "docker" "start" "-a" "6217008f5af5a385b598dcf0ceef361b764fd56a7c2fcdc60bb8928eb0390ac5", kill_on_drop: false }`
[INFO] [stderr]     Checking json v0.12.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `json::JsonValue::to_writer`: use `JsonValue::write` instead
[INFO] [stdout]    --> benches/log.rs:269:14
[INFO] [stdout]     |
[INFO] [stdout] 269 |         data.to_writer(&mut target);
[INFO] [stdout]     |              ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `json::JsonValue::to_writer`: use `JsonValue::write` instead
[INFO] [stdout]    --> benches/log.rs:293:14
[INFO] [stdout]     |
[INFO] [stdout] 293 |         data.to_writer(&mut target);
[INFO] [stdout]     |              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused attribute
[INFO] [stdout]   --> benches/log.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "6217008f5af5a385b598dcf0ceef361b764fd56a7c2fcdc60bb8928eb0390ac5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6217008f5af5a385b598dcf0ceef361b764fd56a7c2fcdc60bb8928eb0390ac5", kill_on_drop: false }`
[INFO] [stdout] 6217008f5af5a385b598dcf0ceef361b764fd56a7c2fcdc60bb8928eb0390ac5