[INFO] cloning repository https://github.com/yshirai-joolen/json2nippo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yshirai-joolen/json2nippo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyshirai-joolen%2Fjson2nippo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyshirai-joolen%2Fjson2nippo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2853b82ea00e6df97259f23734aaff13e4c401e7
[INFO] checking yshirai-joolen/json2nippo against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyshirai-joolen%2Fjson2nippo" "/workspace/builds/worker-21/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-21/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yshirai-joolen/json2nippo on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yshirai-joolen/json2nippo
[INFO] finished tweaking git repo https://github.com/yshirai-joolen/json2nippo
[INFO] tweaked toml for git repo https://github.com/yshirai-joolen/json2nippo written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate git repo https://github.com/yshirai-joolen/json2nippo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c4cad5073676b7a8314dd2a4adab33c451d1dbe295b424c86d06b8c4867eb53
[INFO] running `Command { std: "docker" "start" "-a" "7c4cad5073676b7a8314dd2a4adab33c451d1dbe295b424c86d06b8c4867eb53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c4cad5073676b7a8314dd2a4adab33c451d1dbe295b424c86d06b8c4867eb53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c4cad5073676b7a8314dd2a4adab33c451d1dbe295b424c86d06b8c4867eb53", kill_on_drop: false }`
[INFO] [stdout] 7c4cad5073676b7a8314dd2a4adab33c451d1dbe295b424c86d06b8c4867eb53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b0591a8815ede61a667e085f8f5ffc63b7003275e1b4a5e08a6bb1970e83b31
[INFO] running `Command { std: "docker" "start" "-a" "9b0591a8815ede61a667e085f8f5ffc63b7003275e1b4a5e08a6bb1970e83b31", kill_on_drop: false }`
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]     Checking json2nippo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parsed`
[INFO] [stdout]  --> src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let parsed = json::parse(raw_string).unwrap();
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parsed`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `construct_mention_name`
[INFO] [stdout]   --> src/main.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn construct_mention_name(name: &str) -> Result<String, String>{
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `construct_mention_raw`
[INFO] [stdout]   --> src/main.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn construct_mention_raw(names: &[&str]) -> Result<String, String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parsed`
[INFO] [stdout]  --> src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let parsed = json::parse(raw_string).unwrap();
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parsed`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `Command { std: "docker" "inspect" "9b0591a8815ede61a667e085f8f5ffc63b7003275e1b4a5e08a6bb1970e83b31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b0591a8815ede61a667e085f8f5ffc63b7003275e1b4a5e08a6bb1970e83b31", kill_on_drop: false }`
[INFO] [stdout] 9b0591a8815ede61a667e085f8f5ffc63b7003275e1b4a5e08a6bb1970e83b31