[INFO] cloning repository https://github.com/fanlia/rust-json
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fanlia/rust-json" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffanlia%2Frust-json", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffanlia%2Frust-json'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d920d530eeda5aefbc0780e4cbf1e161712d9808
[INFO] checking fanlia/rust-json against try#6757d700f93f6d16c8b39cf79e96b019bd570e7d for pr-155299-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffanlia%2Frust-json" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/fanlia/rust-json
[INFO] finished tweaking git repo https://github.com/fanlia/rust-json
[INFO] tweaked toml for git repo https://github.com/fanlia/rust-json written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/fanlia/rust-json on toolchain 6757d700f93f6d16c8b39cf79e96b019bd570e7d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/fanlia/rust-json 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" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5c3be94f5a9a4f4587366a59b606c081cf1ea28af86f646dfd82325570ea09cf
[INFO] running `Command { std: "docker" "start" "-a" "5c3be94f5a9a4f4587366a59b606c081cf1ea28af86f646dfd82325570ea09cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c3be94f5a9a4f4587366a59b606c081cf1ea28af86f646dfd82325570ea09cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c3be94f5a9a4f4587366a59b606c081cf1ea28af86f646dfd82325570ea09cf", kill_on_drop: false }`
[INFO] [stdout] 5c3be94f5a9a4f4587366a59b606c081cf1ea28af86f646dfd82325570ea09cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf2fc0c1ab3877c17323cb1a158a389d7cc5a23955b44764062d58a5d8e764f2
[INFO] running `Command { std: "docker" "start" "-a" "cf2fc0c1ab3877c17323cb1a158a389d7cc5a23955b44764062d58a5d8e764f2", kill_on_drop: false }`
[INFO] [stderr]     Checking world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `peek_char` is never used
[INFO] [stdout]   --> src/json.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl Parser {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 52 |     fn peek_char(&self) -> Option<char> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/json.rs:375:12
[INFO] [stdout]     |
[INFO] [stdout] 374 | impl JsonValue {
[INFO] [stdout]     | -------------- methods in this implementation
[INFO] [stdout] 375 |     pub fn as_str(&self) -> Option<&str> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 382 |     pub fn as_f64(&self) -> Option<f64> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 389 |     pub fn as_bool(&self) -> Option<bool> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 396 |     pub fn as_array(&self) -> Option<&Vec<JsonValue>> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 403 |     pub fn as_object(&self) -> Option<&HashMap<String, JsonValue>> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 410 |     pub fn get(&self, key: &str) -> Option<&JsonValue> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 417 |     pub fn get_index(&self, index: usize) -> Option<&JsonValue> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `peek_char` is never used
[INFO] [stdout]   --> src/json.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl Parser {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 52 |     fn peek_char(&self) -> Option<char> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/json.rs:375:12
[INFO] [stdout]     |
[INFO] [stdout] 374 | impl JsonValue {
[INFO] [stdout]     | -------------- methods in this implementation
[INFO] [stdout] 375 |     pub fn as_str(&self) -> Option<&str> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 382 |     pub fn as_f64(&self) -> Option<f64> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 389 |     pub fn as_bool(&self) -> Option<bool> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 396 |     pub fn as_array(&self) -> Option<&Vec<JsonValue>> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 403 |     pub fn as_object(&self) -> Option<&HashMap<String, JsonValue>> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 410 |     pub fn get(&self, key: &str) -> Option<&JsonValue> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 417 |     pub fn get_index(&self, index: usize) -> Option<&JsonValue> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "cf2fc0c1ab3877c17323cb1a158a389d7cc5a23955b44764062d58a5d8e764f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf2fc0c1ab3877c17323cb1a158a389d7cc5a23955b44764062d58a5d8e764f2", kill_on_drop: false }`
[INFO] [stdout] cf2fc0c1ab3877c17323cb1a158a389d7cc5a23955b44764062d58a5d8e764f2
