[INFO] fetching crate polywrap_logger_plugin 0.0.2-beta.2...
[INFO] checking polywrap_logger_plugin-0.0.2-beta.2 against master#bd138e2ae11050ea9ca7a187345a1b606697a8db for pr-114933
[INFO] extracting crate polywrap_logger_plugin 0.0.2-beta.2 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate polywrap_logger_plugin 0.0.2-beta.2 on toolchain bd138e2ae11050ea9ca7a187345a1b606697a8db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd138e2ae11050ea9ca7a187345a1b606697a8db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polywrap_logger_plugin 0.0.2-beta.2
[INFO] finished tweaking crates.io crate polywrap_logger_plugin 0.0.2-beta.2
[INFO] tweaked toml for crates.io crate polywrap_logger_plugin 0.0.2-beta.2 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" "+bd138e2ae11050ea9ca7a187345a1b606697a8db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd138e2ae11050ea9ca7a187345a1b606697a8db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded polywrap_plugin_implementor v0.1.7
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[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:ee140239ab1b0f8122969764b067164664e0d95d26f53df575574e2e5e286359" "/opt/rustwide/cargo-home/bin/cargo" "+bd138e2ae11050ea9ca7a187345a1b606697a8db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8a5b1f101d60d0658948ceeb6f65fe8dad2c6680655caf84ac411f5acd6c9d9
[INFO] running `Command { std: "docker" "start" "-a" "a8a5b1f101d60d0658948ceeb6f65fe8dad2c6680655caf84ac411f5acd6c9d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8a5b1f101d60d0658948ceeb6f65fe8dad2c6680655caf84ac411f5acd6c9d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8a5b1f101d60d0658948ceeb6f65fe8dad2c6680655caf84ac411f5acd6c9d9", kill_on_drop: false }`
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[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:ee140239ab1b0f8122969764b067164664e0d95d26f53df575574e2e5e286359" "/opt/rustwide/cargo-home/bin/cargo" "+bd138e2ae11050ea9ca7a187345a1b606697a8db" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f18ed0ee11fcffc060918f199779a295dd598bfb54199ebd554eedefd8b557f9
[INFO] running `Command { std: "docker" "start" "-a" "f18ed0ee11fcffc060918f199779a295dd598bfb54199ebd554eedefd8b557f9", kill_on_drop: false }`
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[INFO] [stderr]     Checking polywrap_plugin v0.1.7
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[INFO] [stderr]     Checking polywrap_logger_plugin v0.0.2-beta.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BigNumber`, `JSONString`, `JSON`, `bytes::ByteBuf`, `from_slice`, `to_vec`
[INFO] [stdout]   --> src/wrap/module.rs:8:3
[INFO] [stdout]    |
[INFO] [stdout] 8  |   to_vec,
[INFO] [stdout]    |   ^^^^^^
[INFO] [stdout] 9  |   from_slice,
[INFO] [stdout]    |   ^^^^^^^^^^
[INFO] [stdout] 10 |   JSON,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 11 |   bytes::ByteBuf,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^
[INFO] [stdout] 12 |   JSONString,
[INFO] [stdout]    |   ^^^^^^^^^^
[INFO] [stdout] 13 |   BigNumber
[INFO] [stdout]    |   ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BTreeMap`
[INFO] [stdout]   --> src/wrap/module.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::collections::BTreeMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private trait `LogFuncTrait` in public interface (error E0445)
[INFO] [stdout]   --> src/lib.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn new(custom_logger: Option<Box<dyn LogFuncTrait>>) -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking polywrap_client_builder v0.1.7
[INFO] [stderr]     Checking polywrap_client v0.1.7
[INFO] [stdout] warning: unused imports: `BigNumber`, `JSONString`, `JSON`, `bytes::ByteBuf`, `from_slice`, `to_vec`
[INFO] [stdout]   --> src/wrap/module.rs:8:3
[INFO] [stdout]    |
[INFO] [stdout] 8  |   to_vec,
[INFO] [stdout]    |   ^^^^^^
[INFO] [stdout] 9  |   from_slice,
[INFO] [stdout]    |   ^^^^^^^^^^
[INFO] [stdout] 10 |   JSON,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 11 |   bytes::ByteBuf,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^
[INFO] [stdout] 12 |   JSONString,
[INFO] [stdout]    |   ^^^^^^^^^^
[INFO] [stdout] 13 |   BigNumber
[INFO] [stdout]    |   ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BTreeMap`
[INFO] [stdout]   --> src/wrap/module.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::collections::BTreeMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `env_logger::Builder`
[INFO] [stdout]   --> src/lib.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     use env_logger::Builder;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private trait `LogFuncTrait` in public interface (error E0445)
[INFO] [stdout]   --> src/lib.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn new(custom_logger: Option<Box<dyn LogFuncTrait>>) -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.04s
[INFO] running `Command { std: "docker" "inspect" "f18ed0ee11fcffc060918f199779a295dd598bfb54199ebd554eedefd8b557f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f18ed0ee11fcffc060918f199779a295dd598bfb54199ebd554eedefd8b557f9", kill_on_drop: false }`
[INFO] [stdout] f18ed0ee11fcffc060918f199779a295dd598bfb54199ebd554eedefd8b557f9