[INFO] cloning repository https://github.com/Yuta1004/json_parser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Yuta1004/json_parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYuta1004%2Fjson_parser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYuta1004%2Fjson_parser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d4aa0d82f276d8fcf9953e714cf170b4c6c388aa
[INFO] checking Yuta1004/json_parser against try#099e089ab723e6ee96175f3496051098c60a4cd4 for pr-140208
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYuta1004%2Fjson_parser" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Yuta1004/json_parser on toolchain 099e089ab723e6ee96175f3496051098c60a4cd4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+099e089ab723e6ee96175f3496051098c60a4cd4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Yuta1004/json_parser 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" "+099e089ab723e6ee96175f3496051098c60a4cd4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+099e089ab723e6ee96175f3496051098c60a4cd4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c93162f42dcf9d03fe14b1e8d27594908f8da0059e82454fd8eec12048e6b1d
[INFO] running `Command { std: "docker" "start" "-a" "3c93162f42dcf9d03fe14b1e8d27594908f8da0059e82454fd8eec12048e6b1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c93162f42dcf9d03fe14b1e8d27594908f8da0059e82454fd8eec12048e6b1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c93162f42dcf9d03fe14b1e8d27594908f8da0059e82454fd8eec12048e6b1d", kill_on_drop: false }`
[INFO] [stdout] 3c93162f42dcf9d03fe14b1e8d27594908f8da0059e82454fd8eec12048e6b1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+099e089ab723e6ee96175f3496051098c60a4cd4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8226d110610e8b05ad3959c4ce1d6b80463628fe8c18a637fef54bbeae28ae92
[INFO] running `Command { std: "docker" "start" "-a" "8226d110610e8b05ad3959c4ce1d6b80463628fe8c18a637fef54bbeae28ae92", kill_on_drop: false }`
[INFO] [stderr]     Checking json_parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `Value` is never used
[INFO] [stdout]  --> src/parser/mtype/value.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Value {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new_num`, `new_bool`, and `new_str` are never used
[INFO] [stdout]   --> src/parser/mtype/value.rs:8:12
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl Value {
[INFO] [stdout]    | ---------- associated functions in this implementation
[INFO] [stdout] 8  |     pub fn new_num(val: i32) -> Value {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     pub fn new_bool(val: bool) -> Value {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn new_str(val: impl Into<String>) -> Value {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Array` is never constructed
[INFO] [stdout]  --> src/parser/mtype/array.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Array {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push`, and `len` are never used
[INFO] [stdout]   --> src/parser/mtype/array.rs:8:8
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl Array {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 8  |     fn new() -> Array {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     fn push(self: &mut Array, val: Value) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn len(self: &Array) -> usize {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "8226d110610e8b05ad3959c4ce1d6b80463628fe8c18a637fef54bbeae28ae92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8226d110610e8b05ad3959c4ce1d6b80463628fe8c18a637fef54bbeae28ae92", kill_on_drop: false }`
[INFO] [stdout] 8226d110610e8b05ad3959c4ce1d6b80463628fe8c18a637fef54bbeae28ae92