[INFO] fetching crate json_parser_kevin_wang 0.1.0...
[INFO] testing json_parser_kevin_wang-0.1.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate json_parser_kevin_wang 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate json_parser_kevin_wang 0.1.0
[INFO] finished tweaking crates.io crate json_parser_kevin_wang 0.1.0
[INFO] tweaked toml for crates.io crate json_parser_kevin_wang 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate json_parser_kevin_wang 0.1.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate json_parser_kevin_wang 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed4ac8dc5eb53fb6ffd508d083c61cd6513b485e1ae11a7398961c71bce31ac9
[INFO] running `Command { std: "docker" "start" "-a" "ed4ac8dc5eb53fb6ffd508d083c61cd6513b485e1ae11a7398961c71bce31ac9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed4ac8dc5eb53fb6ffd508d083c61cd6513b485e1ae11a7398961c71bce31ac9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed4ac8dc5eb53fb6ffd508d083c61cd6513b485e1ae11a7398961c71bce31ac9", kill_on_drop: false }`
[INFO] [stdout] ed4ac8dc5eb53fb6ffd508d083c61cd6513b485e1ae11a7398961c71bce31ac9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 408d36dbef5ab6f29178f7c51f486777a0c3eea7c8b5d1a25ccd7152e6e27ccb
[INFO] running `Command { std: "docker" "start" "-a" "408d36dbef5ab6f29178f7c51f486777a0c3eea7c8b5d1a25ccd7152e6e27ccb", kill_on_drop: false }`
[INFO] [stderr]    Compiling json_parser_kevin_wang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/json_parser.rs:243:26
[INFO] [stdout]     |
[INFO] [stdout] 243 |                     Some(c)=>{
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/json_parser.rs:59:14
[INFO] [stdout]    |
[INFO] [stdout] 59 |         Bool(bool),
[INFO] [stdout]    |         ---- ^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `JSONTYPE` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 59 -         Bool(bool),
[INFO] [stdout] 59 +         Bool(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/json_parser.rs:61:16
[INFO] [stdout]    |
[INFO] [stdout] 61 |         Number(f64),
[INFO] [stdout]    |         ------ ^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `JSONTYPE` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 61 -         Number(f64),
[INFO] [stdout] 61 +         Number(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/json_parser.rs:62:16
[INFO] [stdout]    |
[INFO] [stdout] 62 |         Object(HashMap<String, JSONTYPE>),
[INFO] [stdout]    |         ------ ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `JSONTYPE` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 62 -         Object(HashMap<String, JSONTYPE>),
[INFO] [stdout] 62 +         Object(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/json_parser.rs:63:15
[INFO] [stdout]    |
[INFO] [stdout] 63 |         Array(Vec<JSONTYPE>),
[INFO] [stdout]    |         ----- ^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `JSONTYPE` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 63 -         Array(Vec<JSONTYPE>),
[INFO] [stdout] 63 +         Array(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "408d36dbef5ab6f29178f7c51f486777a0c3eea7c8b5d1a25ccd7152e6e27ccb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "408d36dbef5ab6f29178f7c51f486777a0c3eea7c8b5d1a25ccd7152e6e27ccb", kill_on_drop: false }`
[INFO] [stdout] 408d36dbef5ab6f29178f7c51f486777a0c3eea7c8b5d1a25ccd7152e6e27ccb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 857e0e6fe80303a37239549ef1cb119a4ec4f0e173422a8c55b8509957292245
[INFO] running `Command { std: "docker" "start" "-a" "857e0e6fe80303a37239549ef1cb119a4ec4f0e173422a8c55b8509957292245", kill_on_drop: false }`
[INFO] [stderr]    Compiling json_parser_kevin_wang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/json_parser.rs:243:26
[INFO] [stdout]     |
[INFO] [stdout] 243 |                     Some(c)=>{
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/json_parser.rs:59:14
[INFO] [stdout]    |
[INFO] [stdout] 59 |         Bool(bool),
[INFO] [stdout]    |         ---- ^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `JSONTYPE` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 59 -         Bool(bool),
[INFO] [stdout] 59 +         Bool(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/json_parser.rs:61:16
[INFO] [stdout]    |
[INFO] [stdout] 61 |         Number(f64),
[INFO] [stdout]    |         ------ ^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `JSONTYPE` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 61 -         Number(f64),
[INFO] [stdout] 61 +         Number(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/json_parser.rs:62:16
[INFO] [stdout]    |
[INFO] [stdout] 62 |         Object(HashMap<String, JSONTYPE>),
[INFO] [stdout]    |         ------ ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `JSONTYPE` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 62 -         Object(HashMap<String, JSONTYPE>),
[INFO] [stdout] 62 +         Object(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/json_parser.rs:63:15
[INFO] [stdout]    |
[INFO] [stdout] 63 |         Array(Vec<JSONTYPE>),
[INFO] [stdout]    |         ----- ^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `JSONTYPE` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 63 -         Array(Vec<JSONTYPE>),
[INFO] [stdout] 63 +         Array(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "857e0e6fe80303a37239549ef1cb119a4ec4f0e173422a8c55b8509957292245", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "857e0e6fe80303a37239549ef1cb119a4ec4f0e173422a8c55b8509957292245", kill_on_drop: false }`
[INFO] [stdout] 857e0e6fe80303a37239549ef1cb119a4ec4f0e173422a8c55b8509957292245
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1d54a35b4231c54b18ab89a8f089764d3e6af8f77e8ef68a21122939cc777d29
[INFO] running `Command { std: "docker" "start" "-a" "1d54a35b4231c54b18ab89a8f089764d3e6af8f77e8ef68a21122939cc777d29", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/json_parser.rs:243:26
[INFO] [stderr]     |
[INFO] [stderr] 243 |                     Some(c)=>{
[INFO] [stderr]     |                          ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> src/json_parser.rs:59:14
[INFO] [stderr]    |
[INFO] [stderr] 59 |         Bool(bool),
[INFO] [stderr]    |         ---- ^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         field in this variant
[INFO] [stderr]    |
[INFO] [stderr]    = note: `JSONTYPE` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 59 -         Bool(bool),
[INFO] [stderr] 59 +         Bool(()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> src/json_parser.rs:61:16
[INFO] [stderr]    |
[INFO] [stderr] 61 |         Number(f64),
[INFO] [stderr]    |         ------ ^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         field in this variant
[INFO] [stderr]    |
[INFO] [stderr]    = note: `JSONTYPE` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 61 -         Number(f64),
[INFO] [stderr] 61 +         Number(()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> src/json_parser.rs:62:16
[INFO] [stderr]    |
[INFO] [stderr] 62 |         Object(HashMap<String, JSONTYPE>),
[INFO] [stderr]    |         ------ ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         field in this variant
[INFO] [stderr]    |
[INFO] [stderr]    = note: `JSONTYPE` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 62 -         Object(HashMap<String, JSONTYPE>),
[INFO] [stderr] 62 +         Object(()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> src/json_parser.rs:63:15
[INFO] [stderr]    |
[INFO] [stderr] 63 |         Array(Vec<JSONTYPE>),
[INFO] [stderr]    |         ----- ^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         field in this variant
[INFO] [stderr]    |
[INFO] [stderr]    = note: `JSONTYPE` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 63 -         Array(Vec<JSONTYPE>),
[INFO] [stderr] 63 +         Array(()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `json_parser_kevin_wang` (bin "json_parser_kevin_wang" test) generated 5 warnings (run `cargo fix --bin "json_parser_kevin_wang" -p json_parser_kevin_wang --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/json_parser_kevin_wang-2dbacbb4e9d5488a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1d54a35b4231c54b18ab89a8f089764d3e6af8f77e8ef68a21122939cc777d29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d54a35b4231c54b18ab89a8f089764d3e6af8f77e8ef68a21122939cc777d29", kill_on_drop: false }`
[INFO] [stdout] 1d54a35b4231c54b18ab89a8f089764d3e6af8f77e8ef68a21122939cc777d29
