[INFO] cloning repository https://github.com/rvarago/rust-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rvarago/rust-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frvarago%2Frust-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frvarago%2Frust-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0153a38ab42bfe174285ff24fc37adddf02c4a50
[INFO] checking rvarago/rust-playground against master#2d3a85b4f8ba7e2554f4d4fee126bc2ac6ee2af4 for pr-84385
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frvarago%2Frust-playground" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rvarago/rust-playground on toolchain 2d3a85b4f8ba7e2554f4d4fee126bc2ac6ee2af4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2d3a85b4f8ba7e2554f4d4fee126bc2ac6ee2af4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/rvarago/rust-playground
[INFO] finished tweaking git repo https://github.com/rvarago/rust-playground
[INFO] tweaked toml for git repo https://github.com/rvarago/rust-playground written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/rvarago/rust-playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2d3a85b4f8ba7e2554f4d4fee126bc2ac6ee2af4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:3d1cd00eb6e6ea2a7969240779edeaeff35b24be85036c63b883ba933028a15f" "/opt/rustwide/cargo-home/bin/cargo" "+2d3a85b4f8ba7e2554f4d4fee126bc2ac6ee2af4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 620d76f6bdae752901d29f94ebc0bccde915106c4f2bda370ddde3671b477c72
[INFO] running `Command { std: "docker" "start" "-a" "620d76f6bdae752901d29f94ebc0bccde915106c4f2bda370ddde3671b477c72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "620d76f6bdae752901d29f94ebc0bccde915106c4f2bda370ddde3671b477c72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "620d76f6bdae752901d29f94ebc0bccde915106c4f2bda370ddde3671b477c72", kill_on_drop: false }`
[INFO] [stdout] 620d76f6bdae752901d29f94ebc0bccde915106c4f2bda370ddde3671b477c72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:3d1cd00eb6e6ea2a7969240779edeaeff35b24be85036c63b883ba933028a15f" "/opt/rustwide/cargo-home/bin/cargo" "+2d3a85b4f8ba7e2554f4d4fee126bc2ac6ee2af4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c65b84c7747823ee916dd1ac33f6df2c3c4e14e25b3c57977b260d617b8a54cb
[INFO] running `Command { std: "docker" "start" "-a" "c65b84c7747823ee916dd1ac33f6df2c3c4e14e25b3c57977b260d617b8a54cb", kill_on_drop: false }`
[INFO] [stderr]     Checking reader v0.1.0 (/opt/rustwide/workdir/reader)
[INFO] [stderr]     Checking sized_vector v0.1.0 (/opt/rustwide/workdir/sized_vector)
[INFO] [stderr]     Checking playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking partition v0.1.0 (/opt/rustwide/workdir/partition)
[INFO] [stderr]     Checking hlist v0.1.0 (/opt/rustwide/workdir/hlist)
[INFO] [stdout] warning: the feature `generic_associated_types` has been stable since 1.65.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> sized_vector/src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(generic_associated_types)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nat::Nat`
[INFO] [stdout]  --> hlist/src/hlist.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     nat::Nat,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `hlist`
[INFO] [stdout]   --> hlist/src/hlist.rs:27:14
[INFO] [stdout]    |
[INFO] [stdout] 27 | macro_rules! hlist {
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `generic_associated_types` has been stable since 1.65.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> hlist/src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(generic_associated_types)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nat::Nat`
[INFO] [stdout]  --> hlist/src/hlist.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     nat::Nat,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `matches` and `mismatches` are never read
[INFO] [stdout]   --> partition/src/lib.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub struct Partitioned<A> {
[INFO] [stdout]    |                ----------- fields in this struct
[INFO] [stdout] 45 |         matches: Vec<A>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 46 |         mismatches: Vec<A>,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Partitioned` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `matches` and `mismatches` are never read
[INFO] [stdout]   --> partition/src/lib.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub struct Partitioned<A> {
[INFO] [stdout]    |                ----------- fields in this struct
[INFO] [stdout] 45 |         matches: Vec<A>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 46 |         mismatches: Vec<A>,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Partitioned` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `generic_associated_types` has been stable since 1.65.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> sized_vector/src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(generic_associated_types)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `generic_associated_types` has been stable since 1.65.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> hlist/src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(generic_associated_types)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `debug` is never read
[INFO] [stdout]   --> reader/examples/config.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Config {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 18 |     debug: bool,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Config` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `address` is never read
[INFO] [stdout]   --> reader/examples/config.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct Server {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 25 |     address: Address,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Server` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 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 0.30s
[INFO] running `Command { std: "docker" "inspect" "c65b84c7747823ee916dd1ac33f6df2c3c4e14e25b3c57977b260d617b8a54cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c65b84c7747823ee916dd1ac33f6df2c3c4e14e25b3c57977b260d617b8a54cb", kill_on_drop: false }`
[INFO] [stdout] c65b84c7747823ee916dd1ac33f6df2c3c4e14e25b3c57977b260d617b8a54cb