[INFO] updating cached repository https://github.com/Yuta1004/json_parser
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d4aa0d82f276d8fcf9953e714cf170b4c6c388aa
[INFO] checking Yuta1004/json_parser against master#bd0bacc694d7d8175804bb6f690cb846bfa4a9ee for pr-71665
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYuta1004%2Fjson_parser" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Yuta1004/json_parser on toolchain bd0bacc694d7d8175804bb6f690cb846bfa4a9ee
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Yuta1004/json_parser
[INFO] finished tweaking git repo https://github.com/Yuta1004/json_parser
[INFO] tweaked toml for git repo https://github.com/Yuta1004/json_parser written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/Yuta1004/json_parser already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 356ac842ea6ed42e68f9cbc03e8f099194f64ba96549cb226b7751de79615014
[INFO] running `"docker" "start" "-a" "356ac842ea6ed42e68f9cbc03e8f099194f64ba96549cb226b7751de79615014"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking json_parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: enum is never used: `Value`
[INFO] [stderr]  --> src/parser/mtype/value.rs:1:10
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub enum Value {
[INFO] [stderr]   |          ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new_num`
[INFO] [stderr]  --> src/parser/mtype/value.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn new_num(val: i32) -> Value {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new_bool`
[INFO] [stderr]   --> src/parser/mtype/value.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn new_bool(val: bool) -> Value {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new_str`
[INFO] [stderr]   --> src/parser/mtype/value.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn new_str(val: impl Into<String>) -> Value {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Array`
[INFO] [stderr]  --> src/parser/mtype/array.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct Array {
[INFO] [stderr]   |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]  --> src/parser/mtype/array.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     fn new() -> Array {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `push`
[INFO] [stderr]   --> src/parser/mtype/array.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn push(self: &mut Array, val: Value) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `len`
[INFO] [stderr]   --> src/parser/mtype/array.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn len(self: &Array) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.19s
[INFO] running `"docker" "inspect" "356ac842ea6ed42e68f9cbc03e8f099194f64ba96549cb226b7751de79615014"`
[INFO] running `"docker" "rm" "-f" "356ac842ea6ed42e68f9cbc03e8f099194f64ba96549cb226b7751de79615014"`
[INFO] [stdout] 356ac842ea6ed42e68f9cbc03e8f099194f64ba96549cb226b7751de79615014