[INFO] fetching crate json 0.12.4...
[INFO] checking json-0.12.4 against master#a3f76a26e045a760bb1163b7eab36872985242d5 for pr-130930
[INFO] extracting crate json 0.12.4 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate json 0.12.4 on toolchain a3f76a26e045a760bb1163b7eab36872985242d5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "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-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7fa6bb4043ee08b4306e7a45a5f0c6139d8ae132b90fff42fe9407c64c5f1284
[INFO] running `Command { std: "docker" "start" "-a" "7fa6bb4043ee08b4306e7a45a5f0c6139d8ae132b90fff42fe9407c64c5f1284", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7fa6bb4043ee08b4306e7a45a5f0c6139d8ae132b90fff42fe9407c64c5f1284", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fa6bb4043ee08b4306e7a45a5f0c6139d8ae132b90fff42fe9407c64c5f1284", kill_on_drop: false }`
[INFO] [stdout] 7fa6bb4043ee08b4306e7a45a5f0c6139d8ae132b90fff42fe9407c64c5f1284
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c656f1b4151d69e930fd5b4e8d559e3ec41560253ec839ce291cadf25ff1df20
[INFO] running `Command { std: "docker" "start" "-a" "c656f1b4151d69e930fd5b4e8d559e3ec41560253ec839ce291cadf25ff1df20", kill_on_drop: false }`
[INFO] [stderr]     Checking json v0.12.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]    --> src/parser.rs:433:30
[INFO] [stdout]     |
[INFO] [stdout] 433 |             b'0' ..= b'9' => (ch - b'0'),
[INFO] [stdout]     |                              ^         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 433 -             b'0' ..= b'9' => (ch - b'0'),
[INFO] [stdout] 433 +             b'0' ..= b'9' => ch - b'0',
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]    --> src/parser.rs:434:30
[INFO] [stdout]     |
[INFO] [stdout] 434 |             b'a' ..= b'f' => (ch + 10 - b'a'),
[INFO] [stdout]     |                              ^              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 434 -             b'a' ..= b'f' => (ch + 10 - b'a'),
[INFO] [stdout] 434 +             b'a' ..= b'f' => ch + 10 - b'a',
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]    --> src/parser.rs:435:30
[INFO] [stdout]     |
[INFO] [stdout] 435 |             b'A' ..= b'F' => (ch + 10 - b'A'),
[INFO] [stdout]     |                              ^              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 435 -             b'A' ..= b'F' => (ch + 10 - b'A'),
[INFO] [stdout] 435 +             b'A' ..= b'F' => ch + 10 - b'A',
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]    --> src/parser.rs:433:30
[INFO] [stdout]     |
[INFO] [stdout] 433 |             b'0' ..= b'9' => (ch - b'0'),
[INFO] [stdout]     |                              ^         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 433 -             b'0' ..= b'9' => (ch - b'0'),
[INFO] [stdout] 433 +             b'0' ..= b'9' => ch - b'0',
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]    --> src/parser.rs:434:30
[INFO] [stdout]     |
[INFO] [stdout] 434 |             b'a' ..= b'f' => (ch + 10 - b'a'),
[INFO] [stdout]     |                              ^              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 434 -             b'a' ..= b'f' => (ch + 10 - b'a'),
[INFO] [stdout] 434 +             b'a' ..= b'f' => ch + 10 - b'a',
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]    --> src/parser.rs:435:30
[INFO] [stdout]     |
[INFO] [stdout] 435 |             b'A' ..= b'F' => (ch + 10 - b'A'),
[INFO] [stdout]     |                              ^              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 435 -             b'A' ..= b'F' => (ch + 10 - b'A'),
[INFO] [stdout] 435 +             b'A' ..= b'F' => ch + 10 - b'A',
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[macro_use]` only has an effect on `extern crate` and modules
[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: use of deprecated method `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 method `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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "c656f1b4151d69e930fd5b4e8d559e3ec41560253ec839ce291cadf25ff1df20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c656f1b4151d69e930fd5b4e8d559e3ec41560253ec839ce291cadf25ff1df20", kill_on_drop: false }`
[INFO] [stdout] c656f1b4151d69e930fd5b4e8d559e3ec41560253ec839ce291cadf25ff1df20