[INFO] cloning repository https://github.com/goksgie/rs-wal-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/goksgie/rs-wal-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgoksgie%2Frs-wal-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgoksgie%2Frs-wal-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 979d5abae72fa85e4057dbcf2063b2bf7310a20e
[INFO] checking goksgie/rs-wal-playground against master#db0e836148accac8a22532e3596ac612b63c2d8e for pr-139272
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgoksgie%2Frs-wal-playground" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/goksgie/rs-wal-playground on toolchain db0e836148accac8a22532e3596ac612b63c2d8e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db0e836148accac8a22532e3596ac612b63c2d8e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/goksgie/rs-wal-playground
[INFO] finished tweaking git repo https://github.com/goksgie/rs-wal-playground
[INFO] tweaked toml for git repo https://github.com/goksgie/rs-wal-playground written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/goksgie/rs-wal-playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db0e836148accac8a22532e3596ac612b63c2d8e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+db0e836148accac8a22532e3596ac612b63c2d8e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89e34048e898b843cf85a0e0785ef7553067bc383cb5b1b550304afca8af9bd1
[INFO] running `Command { std: "docker" "start" "-a" "89e34048e898b843cf85a0e0785ef7553067bc383cb5b1b550304afca8af9bd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89e34048e898b843cf85a0e0785ef7553067bc383cb5b1b550304afca8af9bd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89e34048e898b843cf85a0e0785ef7553067bc383cb5b1b550304afca8af9bd1", kill_on_drop: false }`
[INFO] [stdout] 89e34048e898b843cf85a0e0785ef7553067bc383cb5b1b550304afca8af9bd1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+db0e836148accac8a22532e3596ac612b63c2d8e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3dd66343ca0a8596d392bd5ba80f0e318fd7e1406cde0151638c3be47cf2a67
[INFO] running `Command { std: "docker" "start" "-a" "c3dd66343ca0a8596d392bd5ba80f0e318fd7e1406cde0151638c3be47cf2a67", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]     Checking ryu v1.0.17
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking getrandom v0.2.14
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking file-processor-with-cache v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `io`
[INFO] [stdout]  --> src/utilities.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs, io};
[INFO] [stdout]   |               ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io`
[INFO] [stdout]  --> src/utilities.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs, io};
[INFO] [stdout]   |               ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `file_extension` is never read
[INFO] [stdout]   --> src/utilities.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct FileEntry {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub file_extension: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FileEntry` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `thread` are never read
[INFO] [stdout]   --> src/utilities.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 69 | struct Worker {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 70 |     id: u8,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 71 |     thread: JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]   --> src/utilities.rs:96:5
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub struct ThreadPool<T: Send + 'static> {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 95 |     /// specifies the number of threads.
[INFO] [stdout] 96 |     workers: Vec<Worker>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `shutdown` is never used
[INFO] [stdout]    --> src/utilities.rs:143:12
[INFO] [stdout]     |
[INFO] [stdout] 103 | impl<T: Send + 'static> ThreadPool<T> {
[INFO] [stdout]     | ------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 143 |     pub fn shutdown(&self) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Metadata` is never constructed
[INFO] [stdout]   --> src/services/processor.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Metadata {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/services/processor.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Metadata {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 40 |     fn new(capacity: usize) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `file_extension` is never read
[INFO] [stdout]   --> src/utilities.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct FileEntry {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub file_extension: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FileEntry` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `thread` are never read
[INFO] [stdout]   --> src/utilities.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 69 | struct Worker {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 70 |     id: u8,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 71 |     thread: JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]   --> src/utilities.rs:96:5
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub struct ThreadPool<T: Send + 'static> {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 95 |     /// specifies the number of threads.
[INFO] [stdout] 96 |     workers: Vec<Worker>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `shutdown` is never used
[INFO] [stdout]    --> src/utilities.rs:143:12
[INFO] [stdout]     |
[INFO] [stdout] 103 | impl<T: Send + 'static> ThreadPool<T> {
[INFO] [stdout]     | ------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 143 |     pub fn shutdown(&self) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Metadata` is never constructed
[INFO] [stdout]   --> src/services/processor.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Metadata {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/services/processor.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Metadata {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 40 |     fn new(capacity: usize) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.98s
[INFO] running `Command { std: "docker" "inspect" "c3dd66343ca0a8596d392bd5ba80f0e318fd7e1406cde0151638c3be47cf2a67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3dd66343ca0a8596d392bd5ba80f0e318fd7e1406cde0151638c3be47cf2a67", kill_on_drop: false }`
[INFO] [stdout] c3dd66343ca0a8596d392bd5ba80f0e318fd7e1406cde0151638c3be47cf2a67