[INFO] cloning repository https://github.com/shika-blyat/json-parser3
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shika-blyat/json-parser3" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshika-blyat%2Fjson-parser3", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshika-blyat%2Fjson-parser3'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 67ae634dd840db5731af1d8b03a5241a7db212f5
[INFO] checking shika-blyat/json-parser3 against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshika-blyat%2Fjson-parser3" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shika-blyat/json-parser3 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shika-blyat/json-parser3
[INFO] finished tweaking git repo https://github.com/shika-blyat/json-parser3
[INFO] tweaked toml for git repo https://github.com/shika-blyat/json-parser3 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/shika-blyat/json-parser3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 35b6bd48c2fbe111eef46649e6f24a1d1394e204e961e7c568268de9651196cf
[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" "35b6bd48c2fbe111eef46649e6f24a1d1394e204e961e7c568268de9651196cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35b6bd48c2fbe111eef46649e6f24a1d1394e204e961e7c568268de9651196cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35b6bd48c2fbe111eef46649e6f24a1d1394e204e961e7c568268de9651196cf", kill_on_drop: false }`
[INFO] [stdout] 35b6bd48c2fbe111eef46649e6f24a1d1394e204e961e7c568268de9651196cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 415f860f1eab9d1bd520a91107a56aebc5420a5c0db95c5f1533ec2b5365b3ca
[INFO] running `Command { std: "docker" "start" "-a" "415f860f1eab9d1bd520a91107a56aebc5420a5c0db95c5f1533ec2b5365b3ca", kill_on_drop: false }`
[INFO] [stderr]     Checking json-parser3 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/parser.rs:175:31
[INFO] [stdout]     |
[INFO] [stdout] 175 |     val!(num, val, Token::Num(val), JsonValue::Num);
[INFO] [stdout]     |                               ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/parser.rs:176:33
[INFO] [stdout]     |
[INFO] [stdout] 176 |     val!(bool, val, Token::Bool(val), JsonValue::Bool);
[INFO] [stdout]     |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/parser.rs:177:31
[INFO] [stdout]     |
[INFO] [stdout] 177 |     val!(str, val, Token::Str(val), JsonValue::Str);
[INFO] [stdout]     |                               ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/parser.rs:175:31
[INFO] [stdout]     |
[INFO] [stdout] 175 |     val!(num, val, Token::Num(val), JsonValue::Num);
[INFO] [stdout]     |                               ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/parser.rs:176:33
[INFO] [stdout]     |
[INFO] [stdout] 176 |     val!(bool, val, Token::Bool(val), JsonValue::Bool);
[INFO] [stdout]     |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/parser.rs:177:31
[INFO] [stdout]     |
[INFO] [stdout] 177 |     val!(str, val, Token::Str(val), JsonValue::Str);
[INFO] [stdout]     |                               ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut parser = Parser::new(tokens.unwrap());
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut parser = Parser::new(tokens.unwrap());
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "415f860f1eab9d1bd520a91107a56aebc5420a5c0db95c5f1533ec2b5365b3ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "415f860f1eab9d1bd520a91107a56aebc5420a5c0db95c5f1533ec2b5365b3ca", kill_on_drop: false }`
[INFO] [stdout] 415f860f1eab9d1bd520a91107a56aebc5420a5c0db95c5f1533ec2b5365b3ca