[INFO] fetching crate mutf8 0.5.0...
[INFO] checking mutf8-0.5.0 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate mutf8 0.5.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate mutf8 0.5.0 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mutf8 0.5.0
[INFO] finished tweaking crates.io crate mutf8 0.5.0
[INFO] tweaked toml for crates.io crate mutf8 0.5.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] beb199fef3e36561036155ae4eda00deed0bf8942cac6c6e343bd6d44ae0c0e7
[INFO] running `Command { std: "docker" "start" "-a" "beb199fef3e36561036155ae4eda00deed0bf8942cac6c6e343bd6d44ae0c0e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "beb199fef3e36561036155ae4eda00deed0bf8942cac6c6e343bd6d44ae0c0e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "beb199fef3e36561036155ae4eda00deed0bf8942cac6c6e343bd6d44ae0c0e7", kill_on_drop: false }`
[INFO] [stdout] beb199fef3e36561036155ae4eda00deed0bf8942cac6c6e343bd6d44ae0c0e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a324fac53f25d670b4db1b3509cdf27e5c2679d89c0de0ec4a9127b904026d8
[INFO] running `Command { std: "docker" "start" "-a" "0a324fac53f25d670b4db1b3509cdf27e5c2679d89c0de0ec4a9127b904026d8", kill_on_drop: false }`
[INFO] [stderr]     Checking mutf8 v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde v1.0.209
[INFO] [stderr]     Checking serde_json v1.0.127
[INFO] [stdout] warning: unused import: `mutf8::mutf8_to_utf8`
[INFO] [stdout]  --> tests/to_mutf8.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use mutf8::mutf8_to_utf8;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.06s
[INFO] running `Command { std: "docker" "inspect" "0a324fac53f25d670b4db1b3509cdf27e5c2679d89c0de0ec4a9127b904026d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a324fac53f25d670b4db1b3509cdf27e5c2679d89c0de0ec4a9127b904026d8", kill_on_drop: false }`
[INFO] [stdout] 0a324fac53f25d670b4db1b3509cdf27e5c2679d89c0de0ec4a9127b904026d8