[INFO] cloning repository https://github.com/bayuncao/rdlp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bayuncao/rdlp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbayuncao%2Frdlp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbayuncao%2Frdlp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 39466bbee650afcd636c33cb36886163fb39a6cb
[INFO] checking bayuncao/rdlp against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbayuncao%2Frdlp" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bayuncao/rdlp on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bayuncao/rdlp
[INFO] finished tweaking git repo https://github.com/bayuncao/rdlp
[INFO] tweaked toml for git repo https://github.com/bayuncao/rdlp written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/bayuncao/rdlp 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] 8b19b24a7639ad6c035c0b42c5fb872fdd6d5390c0816bbbfc5c7e2cd4fc221c
[INFO] running `Command { std: "docker" "start" "-a" "8b19b24a7639ad6c035c0b42c5fb872fdd6d5390c0816bbbfc5c7e2cd4fc221c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b19b24a7639ad6c035c0b42c5fb872fdd6d5390c0816bbbfc5c7e2cd4fc221c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b19b24a7639ad6c035c0b42c5fb872fdd6d5390c0816bbbfc5c7e2cd4fc221c", kill_on_drop: false }`
[INFO] [stdout] 8b19b24a7639ad6c035c0b42c5fb872fdd6d5390c0816bbbfc5c7e2cd4fc221c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac1d88ad21effbf4b5818fb07964dc27fff9d4d6660738b971204b79a03cd8b1
[INFO] running `Command { std: "docker" "start" "-a" "ac1d88ad21effbf4b5818fb07964dc27fff9d4d6660738b971204b79a03cd8b1", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `macros::*`
[INFO] [stdout]  --> src/lib.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use macros::*;
[INFO] [stdout]   |         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `macros::*`
[INFO] [stdout]  --> src/lib.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use macros::*;
[INFO] [stdout]   |         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]  --> src/engine/engine.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::result::Result; // Changed from crate::result::Result
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Result` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `debug`, `error`, `info`, `trace`, `warn`
[INFO] [stdout]  --> src/logger/logger.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use log::{debug, error, info, trace, warn, LevelFilter, Level};
[INFO] [stdout]   |           ^^^^^  ^^^^^  ^^^^  ^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]  --> src/engine/engine.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::result::Result; // Changed from crate::result::Result
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Result` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/result/result.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::io::AsyncReadExt`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use tokio::io::AsyncReadExt;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `debug`, `error`, `info`, `trace`, `warn`
[INFO] [stdout]  --> src/logger/logger.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use log::{debug, error, info, trace, warn, LevelFilter, Level};
[INFO] [stdout]   |           ^^^^^  ^^^^^  ^^^^  ^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/result/result.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::io::AsyncReadExt`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use tokio::io::AsyncReadExt;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `results`
[INFO] [stdout]    --> src/main.rs:151:41
[INFO] [stdout]     |
[INFO] [stdout] 151 | ...                   let results = worker.detect(&content);
[INFO] [stdout]     |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_results`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `results`
[INFO] [stdout]    --> src/main.rs:151:41
[INFO] [stdout]     |
[INFO] [stdout] 151 | ...                   let results = worker.detect(&content);
[INFO] [stdout]     |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_results`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Process` is never constructed
[INFO] [stdout]  --> src/engine/engine.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Process {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `rule` and `rule_type` are never read
[INFO] [stdout]   --> src/engine/engine.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Worker {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 15 |     conf: Arc<Conf>, // No change needed here
[INFO] [stdout] 16 |     rule: Item,      // rule item in conf
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 17 |     rule_type: i32,  // VALUE if there is no KReg and KDict
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Result` is never constructed
[INFO] [stdout]  --> src/result/result.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Result {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Process` is never constructed
[INFO] [stdout]  --> src/engine/engine.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Process {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `rule` and `rule_type` are never read
[INFO] [stdout]   --> src/engine/engine.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Worker {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 15 |     conf: Arc<Conf>, // No change needed here
[INFO] [stdout] 16 |     rule: Item,      // rule item in conf
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 17 |     rule_type: i32,  // VALUE if there is no KReg and KDict
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Result` is never constructed
[INFO] [stdout]  --> src/result/result.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Result {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.10s
[INFO] running `Command { std: "docker" "inspect" "ac1d88ad21effbf4b5818fb07964dc27fff9d4d6660738b971204b79a03cd8b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac1d88ad21effbf4b5818fb07964dc27fff9d4d6660738b971204b79a03cd8b1", kill_on_drop: false }`
[INFO] [stdout] ac1d88ad21effbf4b5818fb07964dc27fff9d4d6660738b971204b79a03cd8b1