[INFO] cloning repository https://github.com/user1303836/rust_config_converter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/user1303836/rust_config_converter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fuser1303836%2Frust_config_converter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fuser1303836%2Frust_config_converter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 234080a39f4def1d0ed58b39d81ba4b5709a7c31
[INFO] testing user1303836/rust_config_converter against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fuser1303836%2Frust_config_converter" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/user1303836/rust_config_converter
[INFO] finished tweaking git repo https://github.com/user1303836/rust_config_converter
[INFO] tweaked toml for git repo https://github.com/user1303836/rust_config_converter written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/user1303836/rust_config_converter on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/user1303836/rust_config_converter 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 82fc0855e5f75b22037cb0eca6d8b386cc9c8b817b04b496fff8df66359618d2
[INFO] running `Command { std: "docker" "start" "-a" "82fc0855e5f75b22037cb0eca6d8b386cc9c8b817b04b496fff8df66359618d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82fc0855e5f75b22037cb0eca6d8b386cc9c8b817b04b496fff8df66359618d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82fc0855e5f75b22037cb0eca6d8b386cc9c8b817b04b496fff8df66359618d2", kill_on_drop: false }`
[INFO] [stdout] 82fc0855e5f75b22037cb0eca6d8b386cc9c8b817b04b496fff8df66359618d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f5ac2a92ef7b87b6f2143448560027e20f1f480a0f5e3d5ca5569dab35884ae9
[INFO] running `Command { std: "docker" "start" "-a" "f5ac2a92ef7b87b6f2143448560027e20f1f480a0f5e3d5ca5569dab35884ae9", kill_on_drop: false }`
[INFO] [stderr]    Compiling json_yaml_converter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: cannot find derive macro `debug` in this scope
[INFO] [stdout]   --> src/main.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[derive(debug)]
[INFO] [stdout]    |          ^^^^^ help: a derive macro with a similar name exists: `Debug`
[INFO] [stdout]    |
[INFO] [stdout]   --> /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:913:4
[INFO] [stdout]    |
[INFO] [stdout]    = note: similarly named derive macro `Debug` defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:71:16
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn main() {
[INFO] [stdout]    |          - expected `()` because of default return type
[INFO] [stdout] ...
[INFO] [stdout] 71 |         return Ok(());
[INFO] [stdout]    |                ^^^^^^ expected `()`, found `Result<(), _>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected unit type `()`
[INFO] [stdout]                    found enum `Result<(), _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn main() {
[INFO] [stdout]    |          - expected `()` because of default return type
[INFO] [stdout] ...
[INFO] [stdout] 76 |     Ok(())
[INFO] [stdout]    |     ^^^^^^ expected `()`, found `Result<(), _>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected unit type `()`
[INFO] [stdout]                    found enum `Result<(), _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]   --> src/main.rs:49:25
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn convert_yaml_to_json(filename: &str) -> Result<(), ConversionError> {
[INFO] [stdout]    |                         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]   --> src/main.rs:53:25
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn convert_json_to_yaml(filename: &str) -> Result<(), ConversionError> {
[INFO] [stdout]    |                         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `json_yaml_converter` (bin "json_yaml_converter") due to 3 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f5ac2a92ef7b87b6f2143448560027e20f1f480a0f5e3d5ca5569dab35884ae9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5ac2a92ef7b87b6f2143448560027e20f1f480a0f5e3d5ca5569dab35884ae9", kill_on_drop: false }`
[INFO] [stdout] f5ac2a92ef7b87b6f2143448560027e20f1f480a0f5e3d5ca5569dab35884ae9