[INFO] cloning repository https://github.com/sashavrg/narayan
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sashavrg/narayan" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsashavrg%2Fnarayan", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsashavrg%2Fnarayan'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f66b91e85b3eb3b48b7314d4d43c4ca4e7fa4d52
[INFO] building sashavrg/narayan against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsashavrg%2Fnarayan" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
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[INFO] removed /workspace/builds/worker-1-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/sashavrg/narayan
[INFO] finished tweaking git repo https://github.com/sashavrg/narayan
[INFO] tweaked toml for git repo https://github.com/sashavrg/narayan written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sashavrg/narayan on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sashavrg/narayan 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 040dc2cfaa9bac11c5d7fe904621c2ddf29d7af1d820211ae7033aadea3736ad
[INFO] running `Command { std: "docker" "start" "-a" "040dc2cfaa9bac11c5d7fe904621c2ddf29d7af1d820211ae7033aadea3736ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "040dc2cfaa9bac11c5d7fe904621c2ddf29d7af1d820211ae7033aadea3736ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "040dc2cfaa9bac11c5d7fe904621c2ddf29d7af1d820211ae7033aadea3736ad", kill_on_drop: false }`
[INFO] [stdout] 040dc2cfaa9bac11c5d7fe904621c2ddf29d7af1d820211ae7033aadea3736ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c193738e5bb96b7244c1378e1981b8e4b21b4fdebfbbcc41c4f96226e1188b9a
[INFO] running `Command { std: "docker" "start" "-a" "c193738e5bb96b7244c1378e1981b8e4b21b4fdebfbbcc41c4f96226e1188b9a", kill_on_drop: false }`
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[INFO] [stderr]    Compiling flac-to-mp3-converter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Error` is never constructed
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | enum ConversionMessage {
[INFO] [stdout]    |      ----------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 28 |     Error(String),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ConversionMessage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4m 35s
[INFO] running `Command { std: "docker" "inspect" "c193738e5bb96b7244c1378e1981b8e4b21b4fdebfbbcc41c4f96226e1188b9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c193738e5bb96b7244c1378e1981b8e4b21b4fdebfbbcc41c4f96226e1188b9a", kill_on_drop: false }`
[INFO] [stdout] c193738e5bb96b7244c1378e1981b8e4b21b4fdebfbbcc41c4f96226e1188b9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c87e53b05b30a34054f3df5dc327e43c0d8879dfc47486004410c92070eddbb
[INFO] running `Command { std: "docker" "start" "-a" "7c87e53b05b30a34054f3df5dc327e43c0d8879dfc47486004410c92070eddbb", kill_on_drop: false }`
[INFO] [stderr]    Compiling flac-to-mp3-converter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Error` is never constructed
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | enum ConversionMessage {
[INFO] [stdout]    |      ----------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 28 |     Error(String),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ConversionMessage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "7c87e53b05b30a34054f3df5dc327e43c0d8879dfc47486004410c92070eddbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c87e53b05b30a34054f3df5dc327e43c0d8879dfc47486004410c92070eddbb", kill_on_drop: false }`
[INFO] [stdout] 7c87e53b05b30a34054f3df5dc327e43c0d8879dfc47486004410c92070eddbb