[INFO] cloning repository https://github.com/yazaldefilimonepinto/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/yazaldefilimonepinto/json-parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyazaldefilimonepinto%2Fjson-parser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyazaldefilimonepinto%2Fjson-parser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 686341dde74c41e31eb1dbe2252416b279d13a60
[INFO] checking yazaldefilimonepinto/json-parser against try#fafe42c59556a4233f03dd0d900b575a9afeece8 for pr-143764
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyazaldefilimonepinto%2Fjson-parser" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/yazaldefilimonepinto/json-parser
[INFO] finished tweaking git repo https://github.com/yazaldefilimonepinto/json-parser
[INFO] tweaked toml for git repo https://github.com/yazaldefilimonepinto/json-parser written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yazaldefilimonepinto/json-parser on toolchain fafe42c59556a4233f03dd0d900b575a9afeece8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/yazaldefilimonepinto/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" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f6463fdd1d885eefdb6e512afac9cc34bdfafe47688632f76349c6a79f6814a
[INFO] running `Command { std: "docker" "start" "-a" "1f6463fdd1d885eefdb6e512afac9cc34bdfafe47688632f76349c6a79f6814a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f6463fdd1d885eefdb6e512afac9cc34bdfafe47688632f76349c6a79f6814a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f6463fdd1d885eefdb6e512afac9cc34bdfafe47688632f76349c6a79f6814a", kill_on_drop: false }`
[INFO] [stdout] 1f6463fdd1d885eefdb6e512afac9cc34bdfafe47688632f76349c6a79f6814a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b0fc89e8d7063d42559da80838625e0ae0d707612c621f1c247f3f495a377a9
[INFO] running `Command { std: "docker" "start" "-a" "1b0fc89e8d7063d42559da80838625e0ae0d707612c621f1c247f3f495a377a9", kill_on_drop: false }`
[INFO] [stderr]     Checking json-parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:38:7
[INFO] [stdout]    |
[INFO] [stdout] 38 |   let mut paser = parser(tokens);
[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: variant `UNDEFINED` is never constructed
[INFO] [stdout]  --> src/lexer.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum TokenType {
[INFO] [stdout]   |          --------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 8 |   UNDEFINED,
[INFO] [stdout]   |   ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TokenType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `kind` and `value` are never read
[INFO] [stdout]  --> src/parser.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Ast {
[INFO] [stdout]   |            --- fields in this struct
[INFO] [stdout] 6 |   kind: String,
[INFO] [stdout]   |   ^^^^
[INFO] [stdout] 7 |   children: Vec<Ast>,
[INFO] [stdout] 8 |   value: Option<String>,
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Ast` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:38:7
[INFO] [stdout]    |
[INFO] [stdout] 38 |   let mut paser = parser(tokens);
[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: variant `UNDEFINED` is never constructed
[INFO] [stdout]  --> src/lexer.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum TokenType {
[INFO] [stdout]   |          --------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 8 |   UNDEFINED,
[INFO] [stdout]   |   ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TokenType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `kind` and `value` are never read
[INFO] [stdout]  --> src/parser.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Ast {
[INFO] [stdout]   |            --- fields in this struct
[INFO] [stdout] 6 |   kind: String,
[INFO] [stdout]   |   ^^^^
[INFO] [stdout] 7 |   children: Vec<Ast>,
[INFO] [stdout] 8 |   value: Option<String>,
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Ast` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "1b0fc89e8d7063d42559da80838625e0ae0d707612c621f1c247f3f495a377a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b0fc89e8d7063d42559da80838625e0ae0d707612c621f1c247f3f495a377a9", kill_on_drop: false }`
[INFO] [stdout] 1b0fc89e8d7063d42559da80838625e0ae0d707612c621f1c247f3f495a377a9