[INFO] cloning repository https://github.com/zeithrold/minecraft-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zeithrold/minecraft-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzeithrold%2Fminecraft-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzeithrold%2Fminecraft-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 24e1c59411734daa518507bd60b5e53880511441
[INFO] checking zeithrold/minecraft-playground against master#a33907a7a5381473eec8bcfa0c56e05a856a911c for pr-151539
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzeithrold%2Fminecraft-playground" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/zeithrold/minecraft-playground
[INFO] finished tweaking git repo https://github.com/zeithrold/minecraft-playground
[INFO] tweaked toml for git repo https://github.com/zeithrold/minecraft-playground written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zeithrold/minecraft-playground on toolchain a33907a7a5381473eec8bcfa0c56e05a856a911c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a33907a7a5381473eec8bcfa0c56e05a856a911c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/zeithrold/minecraft-playground 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" "+a33907a7a5381473eec8bcfa0c56e05a856a911c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+a33907a7a5381473eec8bcfa0c56e05a856a911c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91984ad789bb2e4163765a79e13fb95bc7a7e3e6f48344f559354abf9c1451f6
[INFO] running `Command { std: "docker" "start" "-a" "91984ad789bb2e4163765a79e13fb95bc7a7e3e6f48344f559354abf9c1451f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91984ad789bb2e4163765a79e13fb95bc7a7e3e6f48344f559354abf9c1451f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91984ad789bb2e4163765a79e13fb95bc7a7e3e6f48344f559354abf9c1451f6", kill_on_drop: false }`
[INFO] [stdout] 91984ad789bb2e4163765a79e13fb95bc7a7e3e6f48344f559354abf9c1451f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+a33907a7a5381473eec8bcfa0c56e05a856a911c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8cfc4967314de3853f57b78b70c712361f83634a13f6e34d840319902af946a7
[INFO] running `Command { std: "docker" "start" "-a" "8cfc4967314de3853f57b78b70c712361f83634a13f6e34d840319902af946a7", kill_on_drop: false }`
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[INFO] [stderr]     Checking minecraft-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Visitor` and `self`
[INFO] [stdout]  --> src/version/types.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde::de::{self, MapAccess, Visitor};
[INFO] [stdout]   |                 ^^^^             ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/version/types.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/version/types.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde::de::{self, MapAccess, Visitor};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/version/types.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MapAccess`
[INFO] [stdout]  --> src/version/types.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde::de::{self, MapAccess, Visitor};
[INFO] [stdout]   |                       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Deserializer`
[INFO] [stdout]  --> src/version/types.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde::{Deserializer, Serializer};
[INFO] [stdout]   |             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Serializer`
[INFO] [stdout]  --> src/version/types.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde::{Deserializer, Serializer};
[INFO] [stdout]   |                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Visitor`
[INFO] [stdout]  --> src/version/types.rs:5:34
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde::de::{self, MapAccess, Visitor};
[INFO] [stdout]   |                                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MapAccess`
[INFO] [stdout]  --> src/version/types.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde::de::{self, MapAccess, Visitor};
[INFO] [stdout]   |                       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Deserializer`
[INFO] [stdout]  --> src/version/types.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde::{Deserializer, Serializer};
[INFO] [stdout]   |             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Serializer`
[INFO] [stdout]  --> src/version/types.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde::{Deserializer, Serializer};
[INFO] [stdout]   |                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AssetItem` is never constructed
[INFO] [stdout]  --> src/assets/types.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct AssetItem {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AssetIndex` is never constructed
[INFO] [stdout]   --> src/assets/types.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct AssetIndex {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 23s
[INFO] running `Command { std: "docker" "inspect" "8cfc4967314de3853f57b78b70c712361f83634a13f6e34d840319902af946a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cfc4967314de3853f57b78b70c712361f83634a13f6e34d840319902af946a7", kill_on_drop: false }`
[INFO] [stdout] 8cfc4967314de3853f57b78b70c712361f83634a13f6e34d840319902af946a7