[INFO] cloning repository https://github.com/jianshu93/DartUniFrac
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jianshu93/DartUniFrac" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjianshu93%2FDartUniFrac", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjianshu93%2FDartUniFrac'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 86e4c143bf7ba485d5c26c28fd0cef959454256f
[INFO] checking jianshu93/DartUniFrac against try#48c9d93cf65d550d124c40108859fd993778c157 for pr-153692-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjianshu93%2FDartUniFrac" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-6-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/jianshu93/DartUniFrac
[INFO] finished tweaking git repo https://github.com/jianshu93/DartUniFrac
[INFO] tweaked toml for git repo https://github.com/jianshu93/DartUniFrac written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jianshu93/DartUniFrac on toolchain 48c9d93cf65d550d124c40108859fd993778c157
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+48c9d93cf65d550d124c40108859fd993778c157" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jianshu93/DartUniFrac 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" "+48c9d93cf65d550d124c40108859fd993778c157" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+48c9d93cf65d550d124c40108859fd993778c157" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 014252174a340620754189e133b98d52778eda20a05a10ad7c6af3598db7ec53
[INFO] running `Command { std: "docker" "start" "-a" "014252174a340620754189e133b98d52778eda20a05a10ad7c6af3598db7ec53", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "rm" "-f" "014252174a340620754189e133b98d52778eda20a05a10ad7c6af3598db7ec53", kill_on_drop: false }`
[INFO] [stdout] 014252174a340620754189e133b98d52778eda20a05a10ad7c6af3598db7ec53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+48c9d93cf65d550d124c40108859fd993778c157" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5432ec5946198aeb77c3d558180ba8b03a1d6c9228aad2944c6af1ec8fcf4fce
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[INFO] [stderr]     Checking dartunifrac v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `node_name` and `is_leaf` are never read
[INFO] [stdout]   --> src/emdunifrac.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct TreeIndex {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 39 |     node_name: Vec<Option<String>>,   // postorder node -> name
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 40 |     is_leaf: Vec<bool>,               // postorder node -> compact leaf?
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TreeIndex` 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] [stdout] warning: fields `node_name` and `is_leaf` are never read
[INFO] [stdout]   --> src/emdunifrac.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct TreeIndex {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 39 |     node_name: Vec<Option<String>>,   // postorder node -> name
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 40 |     is_leaf: Vec<bool>,               // postorder node -> compact leaf?
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TreeIndex` 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 3m 28s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: proc-macro-error2 v2.0.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "5432ec5946198aeb77c3d558180ba8b03a1d6c9228aad2944c6af1ec8fcf4fce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5432ec5946198aeb77c3d558180ba8b03a1d6c9228aad2944c6af1ec8fcf4fce", kill_on_drop: false }`
[INFO] [stdout] 5432ec5946198aeb77c3d558180ba8b03a1d6c9228aad2944c6af1ec8fcf4fce
