[INFO] fetching crate tracing_storage_logger 0.1.16...
[INFO] testing tracing_storage_logger-0.1.16 against beta-2024-12-08 for beta-1.84.0-4-retry
[INFO] extracting crate tracing_storage_logger 0.1.16 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate tracing_storage_logger 0.1.16 on toolchain beta-2024-12-08
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-12-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tracing_storage_logger 0.1.16
[INFO] finished tweaking crates.io crate tracing_storage_logger 0.1.16
[INFO] tweaked toml for crates.io crate tracing_storage_logger 0.1.16 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate tracing_storage_logger 0.1.16 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" "+beta-2024-12-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 47777e47d6d0cfbb7a0268e2ad123e4ed6062c8f3ddd8de21209acd8102133c1
[INFO] running `Command { std: "docker" "start" "-a" "47777e47d6d0cfbb7a0268e2ad123e4ed6062c8f3ddd8de21209acd8102133c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "47777e47d6d0cfbb7a0268e2ad123e4ed6062c8f3ddd8de21209acd8102133c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47777e47d6d0cfbb7a0268e2ad123e4ed6062c8f3ddd8de21209acd8102133c1", kill_on_drop: false }`
[INFO] [stdout] 47777e47d6d0cfbb7a0268e2ad123e4ed6062c8f3ddd8de21209acd8102133c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f2aff3de8f1e31657030ad7f83bbb911f36abc7b4568ecf30ccf4487c9cb948
[INFO] running `Command { std: "docker" "start" "-a" "8f2aff3de8f1e31657030ad7f83bbb911f36abc7b4568ecf30ccf4487c9cb948", kill_on_drop: false }`
[INFO] [stderr] warning: tracing_storage_logger v0.1.16 (/opt/rustwide/workdir) ignoring invalid dependency `readme` which is missing a lib target
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling ucd-util v0.1.9
[INFO] [stderr]    Compiling libc v0.2.127
[INFO] [stderr]    Compiling utf8-ranges v1.0.5
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling once_cell v1.13.0
[INFO] [stderr]    Compiling serde v1.0.142
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling miniz_oxide v0.5.3
[INFO] [stderr]    Compiling serde_json v1.0.83
[INFO] [stderr]    Compiling sharded-slab v0.1.4
[INFO] [stderr]    Compiling tracing-core v0.1.29
[INFO] [stderr]    Compiling thread_local v1.1.4
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling smallvec v1.9.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling itoa v1.0.3
[INFO] [stderr]    Compiling tracing-log v0.1.3
[INFO] [stderr]    Compiling string-builder v0.2.0
[INFO] [stderr]    Compiling flate2 v1.0.24
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling tracing-subscriber v0.3.15
[INFO] [stderr]    Compiling chrono v0.4.20
[INFO] [stderr]    Compiling parse-zoneinfo v0.1.1
[INFO] [stderr]    Compiling file-rotate v0.7.0
[INFO] [stderr]    Compiling chrono-tz v0.4.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.22
[INFO] [stderr]    Compiling tracing v0.1.36
[INFO] [stderr]    Compiling tracing_storage_logger v0.1.16 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `fmt::Layer`
[INFO] [stdout]  --> src/logger.rs:6:26
[INFO] [stdout]   |
[INFO] [stdout] 6 | use tracing_subscriber::{fmt::Layer, prelude::*};
[INFO] [stdout]   |                          ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chrono_tz::US::Eastern`
[INFO] [stdout]  --> src/custom_layer/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use chrono_tz::US::Eastern;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `suffix::AppendCount`
[INFO] [stdout]  --> src/custom_layer/mod.rs:6:45
[INFO] [stdout]   |
[INFO] [stdout] 6 | use file_rotate::{compression::Compression, suffix::AppendCount, ContentLimit, FileRotate};
[INFO] [stdout]   |                                             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::Cell`
[INFO] [stdout]  --> src/custom_layer/mod.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::cell::Cell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Scope`
[INFO] [stdout]   --> src/custom_layer/mod.rs:14:36
[INFO] [stdout]    |
[INFO] [stdout] 14 | use tracing_subscriber::registry::{Scope, SpanRef};
[INFO] [stdout]    |                                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `registry::Extensions`
[INFO] [stdout]   --> src/custom_layer/mod.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 | use tracing_subscriber::{registry::Extensions, Layer};
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]   --> src/custom_layer/mod.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let mut visitor = JsonVisitor(&mut fields);
[INFO] [stdout]    |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attrs`
[INFO] [stdout]   --> src/custom_layer/mod.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         attrs: &tracing::span::Attributes<'_>,
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_attrs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/custom_layer/mod.rs:74:13
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let mut visitor = JsonVisitor(&mut fields);
[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: value assigned to `spans` is never read
[INFO] [stdout]    --> src/custom_layer/mod.rs:121:17
[INFO] [stdout]     |
[INFO] [stdout] 121 |         let mut spans = Vec::<SpanRef<'_, S>>::new();
[INFO] [stdout]     |                 ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]    --> src/custom_layer/mod.rs:208:13
[INFO] [stdout]     |
[INFO] [stdout] 208 |         let output = serde_json::json!({
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/custom_layer/mod.rs:185:17
[INFO] [stdout]     |
[INFO] [stdout] 185 |             let mut parse_me = value.to_string();
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |             write!( w, "{b}"); 
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |             writeln!(w, "");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |             write!( w, "{n}");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |             writeln!( w, "");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |             write!( w, "{s}");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |             writeln!( w, "");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:34:25
[INFO] [stdout]    |
[INFO] [stdout] 34 |                         write!( w, "{start_indent}{indent_str}{key}:\n");
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:38:25
[INFO] [stdout]    |
[INFO] [stdout] 38 |                         write!( w, "{start_indent}{indent_str}{key}:\n");
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:41:25
[INFO] [stdout]    |
[INFO] [stdout] 41 |                         write!( w, "{start_indent}{indent_str}{key}: ");
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/custom_layer/mod.rs:183:13
[INFO] [stdout]     |
[INFO] [stdout] 183 |             writeln!(log, "{indent}[{name}]");
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/custom_layer/mod.rs:202:21
[INFO] [stdout]     |
[INFO] [stdout] 202 |                     writeln!(&mut log, "{}{}", indent, value.to_string());
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Subscriber`, `debug_span`, `error`, `info_span`, `info`, `instrument`, and `warn`
[INFO] [stdout]  --> src/logger.rs:5:19
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use tracing::{debug_span, error, info, info_span, instrument, warn, Subscriber};
[INFO] [stdout]   |                   ^^^^^^^^^^  ^^^^^  ^^^^  ^^^^^^^^^  ^^^^^^^^^^  ^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fmt::Layer`
[INFO] [stdout]  --> src/logger.rs:6:26
[INFO] [stdout]   |
[INFO] [stdout] 6 | use tracing_subscriber::{fmt::Layer, prelude::*};
[INFO] [stdout]   |                          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chrono_tz::US::Eastern`
[INFO] [stdout]  --> src/custom_layer/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use chrono_tz::US::Eastern;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `suffix::AppendCount`
[INFO] [stdout]  --> src/custom_layer/mod.rs:6:45
[INFO] [stdout]   |
[INFO] [stdout] 6 | use file_rotate::{compression::Compression, suffix::AppendCount, ContentLimit, FileRotate};
[INFO] [stdout]   |                                             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::Cell`
[INFO] [stdout]  --> src/custom_layer/mod.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::cell::Cell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Scope`
[INFO] [stdout]   --> src/custom_layer/mod.rs:14:36
[INFO] [stdout]    |
[INFO] [stdout] 14 | use tracing_subscriber::registry::{Scope, SpanRef};
[INFO] [stdout]    |                                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `registry::Extensions`
[INFO] [stdout]   --> src/custom_layer/mod.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 | use tracing_subscriber::{registry::Extensions, Layer};
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]   --> src/custom_layer/mod.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let mut visitor = JsonVisitor(&mut fields);
[INFO] [stdout]    |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attrs`
[INFO] [stdout]   --> src/custom_layer/mod.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         attrs: &tracing::span::Attributes<'_>,
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_attrs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/custom_layer/mod.rs:74:13
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let mut visitor = JsonVisitor(&mut fields);
[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: value assigned to `spans` is never read
[INFO] [stdout]    --> src/custom_layer/mod.rs:121:17
[INFO] [stdout]     |
[INFO] [stdout] 121 |         let mut spans = Vec::<SpanRef<'_, S>>::new();
[INFO] [stdout]     |                 ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]    --> src/custom_layer/mod.rs:208:13
[INFO] [stdout]     |
[INFO] [stdout] 208 |         let output = serde_json::json!({
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/custom_layer/mod.rs:185:17
[INFO] [stdout]     |
[INFO] [stdout] 185 |             let mut parse_me = value.to_string();
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `logger`
[INFO] [stdout]   --> src/main.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let logger = Logger::new(
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_logger`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Logger` is never constructed
[INFO] [stdout]  --> src/logger.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Logger;
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Logger` 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: associated function `new` is never used
[INFO] [stdout]   --> src/logger.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Logger {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 17 |     pub fn new(path: PathBuf, limit: ContentLimit, max_files: usize, time_zone: Tz) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `max_files` is never read
[INFO] [stdout]   --> src/custom_layer/mod.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct CustomLayer {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub max_files: usize,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `get_span_path` is never used
[INFO] [stdout]    --> src/custom_layer/mod.rs:222:12
[INFO] [stdout]     |
[INFO] [stdout] 221 | impl CustomLayer {
[INFO] [stdout]     | ---------------- associated function in this implementation
[INFO] [stdout] 222 |     pub fn get_span_path() {}
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/custom_layer/mod.rs:183:13
[INFO] [stdout]     |
[INFO] [stdout] 183 |             writeln!(log, "{indent}[{name}]");
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/custom_layer/mod.rs:202:21
[INFO] [stdout]     |
[INFO] [stdout] 202 |                     writeln!(&mut log, "{}{}", indent, value.to_string());
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |             write!( w, "{b}"); 
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |             writeln!(w, "");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |             write!( w, "{n}");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |             writeln!( w, "");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |             write!( w, "{s}");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |             writeln!( w, "");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:34:25
[INFO] [stdout]    |
[INFO] [stdout] 34 |                         write!( w, "{start_indent}{indent_str}{key}:\n");
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:38:25
[INFO] [stdout]    |
[INFO] [stdout] 38 |                         write!( w, "{start_indent}{indent_str}{key}:\n");
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:41:25
[INFO] [stdout]    |
[INFO] [stdout] 41 |                         write!( w, "{start_indent}{indent_str}{key}: ");
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.81s
[INFO] running `Command { std: "docker" "inspect" "8f2aff3de8f1e31657030ad7f83bbb911f36abc7b4568ecf30ccf4487c9cb948", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f2aff3de8f1e31657030ad7f83bbb911f36abc7b4568ecf30ccf4487c9cb948", kill_on_drop: false }`
[INFO] [stdout] 8f2aff3de8f1e31657030ad7f83bbb911f36abc7b4568ecf30ccf4487c9cb948
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 59ee95d1c9c4949dc31991f6e986bd0f1bb2ba74d2b0d7c4138e0976d4cc00bc
[INFO] running `Command { std: "docker" "start" "-a" "59ee95d1c9c4949dc31991f6e986bd0f1bb2ba74d2b0d7c4138e0976d4cc00bc", kill_on_drop: false }`
[INFO] [stderr] warning: tracing_storage_logger v0.1.16 (/opt/rustwide/workdir) ignoring invalid dependency `readme` which is missing a lib target
[INFO] [stdout] warning: unused import: `fmt::Layer`
[INFO] [stdout]  --> src/logger.rs:6:26
[INFO] [stdout]   |
[INFO] [stdout] 6 | use tracing_subscriber::{fmt::Layer, prelude::*};
[INFO] [stdout]   |                          ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chrono_tz::US::Eastern`
[INFO] [stdout]  --> src/custom_layer/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use chrono_tz::US::Eastern;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `suffix::AppendCount`
[INFO] [stdout]  --> src/custom_layer/mod.rs:6:45
[INFO] [stdout]   |
[INFO] [stdout] 6 | use file_rotate::{compression::Compression, suffix::AppendCount, ContentLimit, FileRotate};
[INFO] [stdout]   |                                             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::Cell`
[INFO] [stdout]  --> src/custom_layer/mod.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::cell::Cell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Scope`
[INFO] [stdout]   --> src/custom_layer/mod.rs:14:36
[INFO] [stdout]    |
[INFO] [stdout] 14 | use tracing_subscriber::registry::{Scope, SpanRef};
[INFO] [stdout]    |                                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `registry::Extensions`
[INFO] [stdout]   --> src/custom_layer/mod.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 | use tracing_subscriber::{registry::Extensions, Layer};
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]   --> src/custom_layer/mod.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let mut visitor = JsonVisitor(&mut fields);
[INFO] [stdout]    |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attrs`
[INFO] [stdout]   --> src/custom_layer/mod.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         attrs: &tracing::span::Attributes<'_>,
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_attrs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/custom_layer/mod.rs:74:13
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let mut visitor = JsonVisitor(&mut fields);
[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: value assigned to `spans` is never read
[INFO] [stdout]    --> src/custom_layer/mod.rs:121:17
[INFO] [stdout]     |
[INFO] [stdout] 121 |         let mut spans = Vec::<SpanRef<'_, S>>::new();
[INFO] [stdout]     |                 ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]    --> src/custom_layer/mod.rs:208:13
[INFO] [stdout]     |
[INFO] [stdout] 208 |         let output = serde_json::json!({
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/custom_layer/mod.rs:185:17
[INFO] [stdout]     |
[INFO] [stdout] 185 |             let mut parse_me = value.to_string();
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |             write!( w, "{b}"); 
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |             writeln!(w, "");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |             write!( w, "{n}");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |             writeln!( w, "");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |             write!( w, "{s}");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |             writeln!( w, "");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:34:25
[INFO] [stdout]    |
[INFO] [stdout] 34 |                         write!( w, "{start_indent}{indent_str}{key}:\n");
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:38:25
[INFO] [stdout]    |
[INFO] [stdout] 38 |                         write!( w, "{start_indent}{indent_str}{key}:\n");
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:41:25
[INFO] [stdout]    |
[INFO] [stdout] 41 |                         write!( w, "{start_indent}{indent_str}{key}: ");
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/custom_layer/mod.rs:183:13
[INFO] [stdout]     |
[INFO] [stdout] 183 |             writeln!(log, "{indent}[{name}]");
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/custom_layer/mod.rs:202:21
[INFO] [stdout]     |
[INFO] [stdout] 202 |                     writeln!(&mut log, "{}{}", indent, value.to_string());
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tracing_storage_logger v0.1.16 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `fmt::Layer`
[INFO] [stdout]  --> src/logger.rs:6:26
[INFO] [stdout]   |
[INFO] [stdout] 6 | use tracing_subscriber::{fmt::Layer, prelude::*};
[INFO] [stdout]   |                          ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chrono_tz::US::Eastern`
[INFO] [stdout]  --> src/custom_layer/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use chrono_tz::US::Eastern;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `suffix::AppendCount`
[INFO] [stdout]  --> src/custom_layer/mod.rs:6:45
[INFO] [stdout]   |
[INFO] [stdout] 6 | use file_rotate::{compression::Compression, suffix::AppendCount, ContentLimit, FileRotate};
[INFO] [stdout]   |                                             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::Cell`
[INFO] [stdout]  --> src/custom_layer/mod.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::cell::Cell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Scope`
[INFO] [stdout]   --> src/custom_layer/mod.rs:14:36
[INFO] [stdout]    |
[INFO] [stdout] 14 | use tracing_subscriber::registry::{Scope, SpanRef};
[INFO] [stdout]    |                                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `registry::Extensions`
[INFO] [stdout]   --> src/custom_layer/mod.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 | use tracing_subscriber::{registry::Extensions, Layer};
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Subscriber`, `debug_span`, `error`, `info_span`, `info`, `instrument`, and `warn`
[INFO] [stdout]  --> src/logger.rs:5:19
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use tracing::{debug_span, error, info, info_span, instrument, warn, Subscriber};
[INFO] [stdout]   |                   ^^^^^^^^^^  ^^^^^  ^^^^  ^^^^^^^^^  ^^^^^^^^^^  ^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fmt::Layer`
[INFO] [stdout]  --> src/logger.rs:6:26
[INFO] [stdout]   |
[INFO] [stdout] 6 | use tracing_subscriber::{fmt::Layer, prelude::*};
[INFO] [stdout]   |                          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chrono_tz::US::Eastern`
[INFO] [stdout]  --> src/custom_layer/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use chrono_tz::US::Eastern;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `suffix::AppendCount`
[INFO] [stdout]  --> src/custom_layer/mod.rs:6:45
[INFO] [stdout]   |
[INFO] [stdout] 6 | use file_rotate::{compression::Compression, suffix::AppendCount, ContentLimit, FileRotate};
[INFO] [stdout]   |                                             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::Cell`
[INFO] [stdout]  --> src/custom_layer/mod.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::cell::Cell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Scope`
[INFO] [stdout]   --> src/custom_layer/mod.rs:14:36
[INFO] [stdout]    |
[INFO] [stdout] 14 | use tracing_subscriber::registry::{Scope, SpanRef};
[INFO] [stdout]    |                                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `registry::Extensions`
[INFO] [stdout]   --> src/custom_layer/mod.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 | use tracing_subscriber::{registry::Extensions, Layer};
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]   --> src/custom_layer/mod.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let mut visitor = JsonVisitor(&mut fields);
[INFO] [stdout]    |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attrs`
[INFO] [stdout]   --> src/custom_layer/mod.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         attrs: &tracing::span::Attributes<'_>,
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_attrs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/custom_layer/mod.rs:74:13
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let mut visitor = JsonVisitor(&mut fields);
[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: value assigned to `spans` is never read
[INFO] [stdout]    --> src/custom_layer/mod.rs:121:17
[INFO] [stdout]     |
[INFO] [stdout] 121 |         let mut spans = Vec::<SpanRef<'_, S>>::new();
[INFO] [stdout]     |                 ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]    --> src/custom_layer/mod.rs:208:13
[INFO] [stdout]     |
[INFO] [stdout] 208 |         let output = serde_json::json!({
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]   --> src/custom_layer/mod.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let mut visitor = JsonVisitor(&mut fields);
[INFO] [stdout]    |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attrs`
[INFO] [stdout]   --> src/custom_layer/mod.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         attrs: &tracing::span::Attributes<'_>,
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_attrs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/custom_layer/mod.rs:74:13
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let mut visitor = JsonVisitor(&mut fields);
[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: value assigned to `spans` is never read
[INFO] [stdout]    --> src/custom_layer/mod.rs:121:17
[INFO] [stdout]     |
[INFO] [stdout] 121 |         let mut spans = Vec::<SpanRef<'_, S>>::new();
[INFO] [stdout]     |                 ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]    --> src/custom_layer/mod.rs:208:13
[INFO] [stdout]     |
[INFO] [stdout] 208 |         let output = serde_json::json!({
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/custom_layer/mod.rs:185:17
[INFO] [stdout]     |
[INFO] [stdout] 185 |             let mut parse_me = value.to_string();
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `logger`
[INFO] [stdout]   --> src/main.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let logger = Logger::new(
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_logger`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/custom_layer/mod.rs:185:17
[INFO] [stdout]     |
[INFO] [stdout] 185 |             let mut parse_me = value.to_string();
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |             write!( w, "{b}"); 
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |             writeln!(w, "");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |             write!( w, "{n}");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |             writeln!( w, "");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |             write!( w, "{s}");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |             writeln!( w, "");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:34:25
[INFO] [stdout]    |
[INFO] [stdout] 34 |                         write!( w, "{start_indent}{indent_str}{key}:\n");
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:38:25
[INFO] [stdout]    |
[INFO] [stdout] 38 |                         write!( w, "{start_indent}{indent_str}{key}:\n");
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:41:25
[INFO] [stdout]    |
[INFO] [stdout] 41 |                         write!( w, "{start_indent}{indent_str}{key}: ");
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/custom_layer/mod.rs:183:13
[INFO] [stdout]     |
[INFO] [stdout] 183 |             writeln!(log, "{indent}[{name}]");
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/custom_layer/mod.rs:202:21
[INFO] [stdout]     |
[INFO] [stdout] 202 |                     writeln!(&mut log, "{}{}", indent, value.to_string());
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Logger` is never constructed
[INFO] [stdout]  --> src/logger.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Logger;
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Logger` 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: associated function `new` is never used
[INFO] [stdout]   --> src/logger.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Logger {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 17 |     pub fn new(path: PathBuf, limit: ContentLimit, max_files: usize, time_zone: Tz) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `max_files` is never read
[INFO] [stdout]   --> src/custom_layer/mod.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct CustomLayer {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub max_files: usize,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `get_span_path` is never used
[INFO] [stdout]    --> src/custom_layer/mod.rs:222:12
[INFO] [stdout]     |
[INFO] [stdout] 221 | impl CustomLayer {
[INFO] [stdout]     | ---------------- associated function in this implementation
[INFO] [stdout] 222 |     pub fn get_span_path() {}
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/custom_layer/mod.rs:183:13
[INFO] [stdout]     |
[INFO] [stdout] 183 |             writeln!(log, "{indent}[{name}]");
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/custom_layer/mod.rs:202:21
[INFO] [stdout]     |
[INFO] [stdout] 202 |                     writeln!(&mut log, "{}{}", indent, value.to_string());
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |             write!( w, "{b}"); 
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |             writeln!(w, "");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |             write!( w, "{n}");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |             writeln!( w, "");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |             write!( w, "{s}");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |             writeln!( w, "");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:34:25
[INFO] [stdout]    |
[INFO] [stdout] 34 |                         write!( w, "{start_indent}{indent_str}{key}:\n");
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:38:25
[INFO] [stdout]    |
[INFO] [stdout] 38 |                         write!( w, "{start_indent}{indent_str}{key}:\n");
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write_json.rs:41:25
[INFO] [stdout]    |
[INFO] [stdout] 41 |                         write!( w, "{start_indent}{indent_str}{key}: ");
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "59ee95d1c9c4949dc31991f6e986bd0f1bb2ba74d2b0d7c4138e0976d4cc00bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59ee95d1c9c4949dc31991f6e986bd0f1bb2ba74d2b0d7c4138e0976d4cc00bc", kill_on_drop: false }`
[INFO] [stdout] 59ee95d1c9c4949dc31991f6e986bd0f1bb2ba74d2b0d7c4138e0976d4cc00bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a1854ddfc2db9a6d2367399044e97c2b230a780e6d2903776d9644ead722df62
[INFO] running `Command { std: "docker" "start" "-a" "a1854ddfc2db9a6d2367399044e97c2b230a780e6d2903776d9644ead722df62", kill_on_drop: false }`
[INFO] [stderr] warning: tracing_storage_logger v0.1.16 (/opt/rustwide/workdir) ignoring invalid dependency `readme` which is missing a lib target
[INFO] [stderr] warning: unused import: `fmt::Layer`
[INFO] [stderr]  --> src/logger.rs:6:26
[INFO] [stderr]   |
[INFO] [stderr] 6 | use tracing_subscriber::{fmt::Layer, prelude::*};
[INFO] [stderr]   |                          ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `chrono_tz::US::Eastern`
[INFO] [stderr]  --> src/custom_layer/mod.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use chrono_tz::US::Eastern;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `suffix::AppendCount`
[INFO] [stderr]  --> src/custom_layer/mod.rs:6:45
[INFO] [stderr]   |
[INFO] [stderr] 6 | use file_rotate::{compression::Compression, suffix::AppendCount, ContentLimit, FileRotate};
[INFO] [stderr]   |                                             ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::Cell`
[INFO] [stderr]  --> src/custom_layer/mod.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::cell::Cell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Scope`
[INFO] [stderr]   --> src/custom_layer/mod.rs:14:36
[INFO] [stderr]    |
[INFO] [stderr] 14 | use tracing_subscriber::registry::{Scope, SpanRef};
[INFO] [stderr]    |                                    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `registry::Extensions`
[INFO] [stderr]   --> src/custom_layer/mod.rs:15:26
[INFO] [stderr]    |
[INFO] [stderr] 15 | use tracing_subscriber::{registry::Extensions, Layer};
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `visitor`
[INFO] [stderr]   --> src/custom_layer/mod.rs:74:17
[INFO] [stderr]    |
[INFO] [stderr] 74 |         let mut visitor = JsonVisitor(&mut fields);
[INFO] [stderr]    |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `attrs`
[INFO] [stderr]   --> src/custom_layer/mod.rs:61:9
[INFO] [stderr]    |
[INFO] [stderr] 61 |         attrs: &tracing::span::Attributes<'_>,
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_attrs`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/custom_layer/mod.rs:74:13
[INFO] [stderr]    |
[INFO] [stderr] 74 |         let mut visitor = JsonVisitor(&mut fields);
[INFO] [stderr]    |             ----^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `spans` is never read
[INFO] [stderr]    --> src/custom_layer/mod.rs:121:17
[INFO] [stderr]     |
[INFO] [stderr] 121 |         let mut spans = Vec::<SpanRef<'_, S>>::new();
[INFO] [stderr]     |                 ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `output`
[INFO] [stderr]    --> src/custom_layer/mod.rs:208:13
[INFO] [stderr]     |
[INFO] [stderr] 208 |         let output = serde_json::json!({
[INFO] [stderr]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/custom_layer/mod.rs:185:17
[INFO] [stderr]     |
[INFO] [stderr] 185 |             let mut parse_me = value.to_string();
[INFO] [stderr]     |                 ----^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/write_json.rs:12:13
[INFO] [stderr]    |
[INFO] [stderr] 12 |             write!( w, "{b}"); 
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/write_json.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |             writeln!(w, "");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/write_json.rs:16:13
[INFO] [stderr]    |
[INFO] [stderr] 16 |             write!( w, "{n}");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/write_json.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |             writeln!( w, "");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/write_json.rs:20:13
[INFO] [stderr]    |
[INFO] [stderr] 20 |             write!( w, "{s}");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/write_json.rs:21:13
[INFO] [stderr]    |
[INFO] [stderr] 21 |             writeln!( w, "");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/write_json.rs:34:25
[INFO] [stderr]    |
[INFO] [stderr] 34 |                         write!( w, "{start_indent}{indent_str}{key}:\n");
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/write_json.rs:38:25
[INFO] [stderr]    |
[INFO] [stderr] 38 |                         write!( w, "{start_indent}{indent_str}{key}:\n");
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/write_json.rs:41:25
[INFO] [stderr]    |
[INFO] [stderr] 41 |                         write!( w, "{start_indent}{indent_str}{key}: ");
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/custom_layer/mod.rs:183:13
[INFO] [stderr]     |
[INFO] [stderr] 183 |             writeln!(log, "{indent}[{name}]");
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/custom_layer/mod.rs:202:21
[INFO] [stderr]     |
[INFO] [stderr] 202 |                     writeln!(&mut log, "{}{}", indent, value.to_string());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `tracing_storage_logger` (lib) generated 23 warnings (run `cargo fix --lib -p tracing_storage_logger` to apply 8 suggestions)
[INFO] [stderr] warning: `tracing_storage_logger` (lib test) generated 23 warnings (23 duplicates)
[INFO] [stderr] warning: unused imports: `Subscriber`, `debug_span`, `error`, `info_span`, `info`, `instrument`, and `warn`
[INFO] [stderr]  --> src/logger.rs:5:19
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub use tracing::{debug_span, error, info, info_span, instrument, warn, Subscriber};
[INFO] [stderr]   |                   ^^^^^^^^^^  ^^^^^  ^^^^  ^^^^^^^^^  ^^^^^^^^^^  ^^^^  ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `fmt::Layer`
[INFO] [stderr]  --> src/logger.rs:6:26
[INFO] [stderr]   |
[INFO] [stderr] 6 | use tracing_subscriber::{fmt::Layer, prelude::*};
[INFO] [stderr]   |                          ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `logger`
[INFO] [stderr]   --> src/main.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let logger = Logger::new(
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_logger`
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Logger` is never constructed
[INFO] [stderr]  --> src/logger.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub struct Logger;
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Logger` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/logger.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 16 | impl Logger {
[INFO] [stderr]    | ----------- associated function in this implementation
[INFO] [stderr] 17 |     pub fn new(path: PathBuf, limit: ContentLimit, max_files: usize, time_zone: Tz) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `max_files` is never read
[INFO] [stderr]   --> src/custom_layer/mod.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub struct CustomLayer {
[INFO] [stderr]    |            ----------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 28 |     pub max_files: usize,
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `get_span_path` is never used
[INFO] [stderr]    --> src/custom_layer/mod.rs:222:12
[INFO] [stderr]     |
[INFO] [stderr] 221 | impl CustomLayer {
[INFO] [stderr]     | ---------------- associated function in this implementation
[INFO] [stderr] 222 |     pub fn get_span_path() {}
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/custom_layer/mod.rs:183:13
[INFO] [stderr]     |
[INFO] [stderr] 183 |             writeln!(log, "{indent}[{name}]");
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/write_json.rs:12:13
[INFO] [stderr]    |
[INFO] [stderr] 12 |             write!( w, "{b}"); 
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `tracing_storage_logger` (bin "main" test) generated 29 warnings (20 duplicates) (run `cargo fix --bin "main" --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tracing_storage_logger-fabf7fd34f39dc8f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/main-cbd96252802a733b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tracing_storage_logger
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 6) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 6) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] thread 'main' panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/file-rotate-0.7.0/src/lib.rs:432:56:
[INFO] [stdout] create dir: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x60c34743b34a - std::backtrace_rs::backtrace::libunwind::trace::h8810477743020387
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x60c34743b34a - std::backtrace_rs::backtrace::trace_unsynchronized::h3aa55355dd6c54a6
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x60c34743b34a - std::sys::backtrace::_print_fmt::h8588b0f62410823f
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x60c34743b34a - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h98c26ac25ffe89bb
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x60c34745c2a3 - core::fmt::rt::Argument::fmt::hf95377f4aebd453b
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x60c34745c2a3 - core::fmt::write::h0dd5f6e2238c7982
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/mod.rs:1189:21
[INFO] [stdout]    6:     0x60c347438c83 - std::io::Write::write_fmt::hc00bff0a88e08857
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/io/mod.rs:1884:15
[INFO] [stdout]    7:     0x60c34743b192 - std::sys::backtrace::BacktraceLock::print::h5c19c1c038ee186d
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x60c34743c15c - std::panicking::default_hook::{{closure}}::h77172f079a1fcb13
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:268:22
[INFO] [stdout]    9:     0x60c34743bfa2 - std::panicking::default_hook::he5f8e3b203ccddba
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:295:9
[INFO] [stdout]   10:     0x60c34743c737 - std::panicking::rust_panic_with_hook::h53863d4e9018df39
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:801:13
[INFO] [stdout]   11:     0x60c34743c5ca - std::panicking::begin_panic_handler::{{closure}}::h67280e6fa0757873
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:674:13
[INFO] [stdout]   12:     0x60c34743b829 - std::sys::backtrace::__rust_end_short_backtrace::h1dac3f54d6fbbeb2
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:170:18
[INFO] [stdout]   13:     0x60c34743c25c - rust_begin_unwind
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:665:5
[INFO] [stdout]   14:     0x60c3472fc9b0 - core::panicking::panic_fmt::h6792bd1b2bf01041
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panicking.rs:76:14
[INFO] [stdout]   15:     0x60c3472fcdf6 - core::result::unwrap_failed::h05e0602ed34287c5
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/result.rs:1699:5
[INFO] [stdout]   16:     0x60c34730a99f - core::result::Result<T,E>::expect::hc2001eba56cad4ce
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/result.rs:1061:23
[INFO] [stdout]   17:     0x60c3473269b9 - file_rotate::FileRotate<S>::new::h4dc096a6170fc469
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/file-rotate-0.7.0/src/lib.rs:432:9
[INFO] [stdout]   18:     0x60c34730efa1 - <tracing_storage_logger::custom_layer::CustomLayer as tracing_subscriber::layer::Layer<S>>::on_event::h3d72f1bda3b47879
[INFO] [stdout]                                at /opt/rustwide/workdir/src/custom_layer/mod.rs:154:24
[INFO] [stdout]   19:     0x60c3473117a7 - <tracing_subscriber::layer::layered::Layered<L,S> as tracing_core::subscriber::Subscriber>::event::heee275cafab3fe4e
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/tracing-subscriber-0.3.15/src/layer/layered.rs:154:9
[INFO] [stdout]   20:     0x60c34736e952 - <alloc::sync::Arc<S> as tracing_core::subscriber::Subscriber>::event::h8e7ce8c99d46af02
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/tracing-core-0.1.29/src/subscriber.rs:807:9
[INFO] [stdout]   21:     0x60c34736b407 - tracing_core::dispatcher::Dispatch::event::hfbee5cce27f1c260
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/tracing-core-0.1.29/src/dispatcher.rs:526:13
[INFO] [stdout]   22:     0x60c34736b5f1 - tracing_core::event::Event::dispatch::{{closure}}::heb435a23bb83ac14
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/tracing-core-0.1.29/src/event.rs:35:13
[INFO] [stdout]   23:     0x60c34736af88 - tracing_core::dispatcher::get_default::{{closure}}::h4f59b937a6170417
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/tracing-core-0.1.29/src/dispatcher.rs:337:24
[INFO] [stdout]   24:     0x60c34736c4ef - std::thread::local::LocalKey<T>::try_with::h3fed545394604099
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/thread/local.rs:283:12
[INFO] [stdout]   25:     0x60c34736ac0e - tracing_core::dispatcher::get_default::h650e9e529fa5dbae
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/tracing-core-0.1.29/src/dispatcher.rs:334:5
[INFO] [stdout]   26:     0x60c34736b5c9 - tracing_core::event::Event::dispatch::h6194af306cba2a56
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/tracing-core-0.1.29/src/event.rs:34:9
[INFO] [stdout]   27:     0x60c3472fe0ae - rust_out::main::{{closure}}::h9b368b9774ae0716
[INFO] [stdout]   28:     0x60c3472fdc7b - rust_out::main::h57eefffa92e38ed0
[INFO] [stdout]   29:     0x60c3472fd5d3 - core::ops::function::FnOnce::call_once::hcb3872443a25b5b7
[INFO] [stdout]   30:     0x60c3472fd4f6 - std::sys::backtrace::__rust_begin_short_backtrace::hb8f53f53663d2e9e
[INFO] [stdout]   31:     0x60c3472fd4c9 - std::rt::lang_start::{{closure}}::h0d6bdb8cb611c7e9
[INFO] [stdout]   32:     0x60c347435697 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hba2470d01d3f5e41
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:284:13
[INFO] [stdout]   33:     0x60c347435697 - std::panicking::try::do_call::hc063fb73159aab72
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40
[INFO] [stdout]   34:     0x60c347435697 - std::panicking::try::h2767c6d245d3a3bb
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19
[INFO] [stdout]   35:     0x60c347435697 - std::panic::catch_unwind::h061c6ef75790da63
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14
[INFO] [stdout]   36:     0x60c347435697 - std::rt::lang_start_internal::{{closure}}::h5c5e35b11a4b8c4e
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/rt.rs:174:48
[INFO] [stdout]   37:     0x60c347435697 - std::panicking::try::do_call::h705e99690a8109cc
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40
[INFO] [stdout]   38:     0x60c347435697 - std::panicking::try::he5f4452754ed9a34
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19
[INFO] [stdout]   39:     0x60c347435697 - std::panic::catch_unwind::h5db61b3bcbe883e5
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14
[INFO] [stdout]   40:     0x60c347435697 - std::rt::lang_start_internal::h81da9b59bab665c6
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/rt.rs:174:20
[INFO] [stdout]   41:     0x60c3472fd4a7 - std::rt::lang_start::h2798034e47ddebf9
[INFO] [stdout]   42:     0x60c3473015b5 - main
[INFO] [stdout]   43:     0x7c3a36325d90 - <unknown>
[INFO] [stdout]   44:     0x7c3a36325e40 - __libc_start_main
[INFO] [stdout]   45:     0x60c3472fd255 - _start
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 6)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.13s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "a1854ddfc2db9a6d2367399044e97c2b230a780e6d2903776d9644ead722df62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1854ddfc2db9a6d2367399044e97c2b230a780e6d2903776d9644ead722df62", kill_on_drop: false }`
[INFO] [stdout] a1854ddfc2db9a6d2367399044e97c2b230a780e6d2903776d9644ead722df62
