[INFO] fetching crate krait 0.1.7...
[INFO] checking krait-0.1.7 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate krait 0.1.7 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate krait 0.1.7
[INFO] finished tweaking crates.io crate krait 0.1.7
[INFO] tweaked toml for crates.io crate krait 0.1.7 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate krait 0.1.7 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 95665ec2a2be9cd3027ef2e55e560102764640ccd2771d1db18faccefbc765df
[INFO] running `Command { std: "docker" "start" "-a" "95665ec2a2be9cd3027ef2e55e560102764640ccd2771d1db18faccefbc765df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95665ec2a2be9cd3027ef2e55e560102764640ccd2771d1db18faccefbc765df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95665ec2a2be9cd3027ef2e55e560102764640ccd2771d1db18faccefbc765df", kill_on_drop: false }`
[INFO] [stdout] 95665ec2a2be9cd3027ef2e55e560102764640ccd2771d1db18faccefbc765df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0870b2cefc02a4eef0c80467cd6a50393885c1bce4fb9a2798326d91c5afb4fd
[INFO] running `Command { std: "docker" "start" "-a" "0870b2cefc02a4eef0c80467cd6a50393885c1bce4fb9a2798326d91c5afb4fd", kill_on_drop: false }`
[INFO] [stderr]     Checking krait v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `log_level`
[INFO] [stdout]   --> src/engine/logging.rs:27:56
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn log_message(engine: &mut Engine, message: &str, log_level: LogLevel) {
[INFO] [stdout]    |                                                        ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_log_level`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/engine/scene.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut scenes = Vec::new();
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `is_running` is never read
[INFO] [stdout]  --> src/engine/core.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Engine {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 5 |     pub(crate) is_running: bool,
[INFO] [stdout]   |                ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `message` and `level` are never read
[INFO] [stdout]   --> src/engine/logging.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Log {
[INFO] [stdout]    |            --- fields in this struct
[INFO] [stdout] 16 |     message: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 17 |     level: LogLevel,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `log_level`
[INFO] [stdout]   --> src/engine/logging.rs:27:56
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn log_message(engine: &mut Engine, message: &str, log_level: LogLevel) {
[INFO] [stdout]    |                                                        ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_log_level`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/engine/scene.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut scenes = Vec::new();
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `is_running` is never read
[INFO] [stdout]  --> src/engine/core.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Engine {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 5 |     pub(crate) is_running: bool,
[INFO] [stdout]   |                ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `message` and `level` are never read
[INFO] [stdout]   --> src/engine/logging.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Log {
[INFO] [stdout]    |            --- fields in this struct
[INFO] [stdout] 16 |     message: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 17 |     level: LogLevel,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "0870b2cefc02a4eef0c80467cd6a50393885c1bce4fb9a2798326d91c5afb4fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0870b2cefc02a4eef0c80467cd6a50393885c1bce4fb9a2798326d91c5afb4fd", kill_on_drop: false }`
[INFO] [stdout] 0870b2cefc02a4eef0c80467cd6a50393885c1bce4fb9a2798326d91c5afb4fd