[INFO] cloning repository https://github.com/mhammond/tracing-as-log
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mhammond/tracing-as-log" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmhammond%2Ftracing-as-log", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmhammond%2Ftracing-as-log'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0b354b3de8626a17dcff4fb4c49accbf4f7e6538
[INFO] checking mhammond/tracing-as-log against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmhammond%2Ftracing-as-log" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mhammond/tracing-as-log
[INFO] finished tweaking git repo https://github.com/mhammond/tracing-as-log
[INFO] tweaked toml for git repo https://github.com/mhammond/tracing-as-log written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mhammond/tracing-as-log on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mhammond/tracing-as-log 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v2.0.51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d55c8badcfd6318903564990b3fcb9c86c0c33c459767e9e1c04e74913c2b3bb
[INFO] running `Command { std: "docker" "start" "-a" "d55c8badcfd6318903564990b3fcb9c86c0c33c459767e9e1c04e74913c2b3bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d55c8badcfd6318903564990b3fcb9c86c0c33c459767e9e1c04e74913c2b3bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d55c8badcfd6318903564990b3fcb9c86c0c33c459767e9e1c04e74913c2b3bb", kill_on_drop: false }`
[INFO] [stdout] d55c8badcfd6318903564990b3fcb9c86c0c33c459767e9e1c04e74913c2b3bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c4036bb75054d0a4b096fec7d4f92f89dbebe66fad47592b9d0ab696992fad2
[INFO] running `Command { std: "docker" "start" "-a" "5c4036bb75054d0a4b096fec7d4f92f89dbebe66fad47592b9d0ab696992fad2", kill_on_drop: false }`
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking log_lib v0.1.0 (/opt/rustwide/workdir/log_lib)
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]    Compiling syn v2.0.51
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking env_logger v0.10.2
[INFO] [stderr]     Checking regex-automata v0.4.5
[INFO] [stderr]     Checking serde_json v1.0.114
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking first_lib v0.1.0 (/opt/rustwide/workdir/first_lib)
[INFO] [stderr]     Checking second_lib v0.1.0 (/opt/rustwide/workdir/second_lib)
[INFO] [stderr]     Checking app v0.1.0 (/opt/rustwide/workdir/app)
[INFO] [stdout] warning: unused import: `tracing_subscriber::prelude::*`
[INFO] [stdout]  --> app/src/burgers.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use tracing_subscriber::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Record` is never constructed
[INFO] [stdout]   --> app/src/lib.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Record {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `LogSink` is never used
[INFO] [stdout]   --> app/src/lib.rs:51:7
[INFO] [stdout]    |
[INFO] [stdout] 51 | trait LogSink: Send + Sync {
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `register` is never used
[INFO] [stdout]   --> app/src/lib.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | impl AppServicesLogger {
[INFO] [stdout]    | ---------------------- method in this implementation
[INFO] [stdout] 69 |     fn register(&self, target: String, level: Level, sink: Arc<dyn LogSink>) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `init_tracing_log` is never used
[INFO] [stdout]   --> app/src/lib.rs:82:4
[INFO] [stdout]    |
[INFO] [stdout] 82 | fn init_tracing_log() {}
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CustomLayer` is never constructed
[INFO] [stdout]  --> app/src/burgers.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct CustomLayer;
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PrintlnVisitor` is never constructed
[INFO] [stdout]   --> app/src/burgers.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct PrintlnVisitor;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LogEntry` is never constructed
[INFO] [stdout]   --> app/src/tracer.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct LogEntry {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `LOGGERS_BY_TARGET` is never used
[INFO] [stdout]   --> app/src/tracer.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | static LOGGERS_BY_TARGET: Lazy<RwLock<HashMap<String, LogEntry>>> = Lazy::new(|| {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `register_log_sink` is never used
[INFO] [stdout]   --> app/src/tracer.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn register_log_sink(target: String, level: crate::Level, sink: Arc<dyn LogSink>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SimpleLogLayer` is never constructed
[INFO] [stdout]   --> app/src/tracer.rs:31:19
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub(crate) struct SimpleLogLayer;
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `JsonVisitor` is never constructed
[INFO] [stdout]   --> app/src/tracer.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | struct JsonVisitor<'a>(&'a mut BTreeMap<String, serde_json::Value>);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> app/src/lib.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Record {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 46 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Record` 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: struct `PrintlnVisitor` is never constructed
[INFO] [stdout]   --> app/src/burgers.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct PrintlnVisitor;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.40s
[INFO] running `Command { std: "docker" "inspect" "5c4036bb75054d0a4b096fec7d4f92f89dbebe66fad47592b9d0ab696992fad2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c4036bb75054d0a4b096fec7d4f92f89dbebe66fad47592b9d0ab696992fad2", kill_on_drop: false }`
[INFO] [stdout] 5c4036bb75054d0a4b096fec7d4f92f89dbebe66fad47592b9d0ab696992fad2