[INFO] fetching crate knob 0.9.65...
[INFO] testing knob-0.9.65 against master#1f7f8ea0721a3b1eb73e6c6d25cccb371434b320 for pr-154065-1
[INFO] extracting crate knob 0.9.65 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate knob 0.9.65
[INFO] finished tweaking crates.io crate knob 0.9.65
[INFO] tweaked toml for crates.io crate knob 0.9.65 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate knob 0.9.65 on toolchain 1f7f8ea0721a3b1eb73e6c6d25cccb371434b320
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate knob 0.9.65 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" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clap_derive v4.5.28
[INFO] [stderr]   Downloaded once_cell v1.21.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 19d5336b17800126cd8c89eb5960e6dcdf9f82047291e725c96ae7abc19415a4
[INFO] running `Command { std: "docker" "start" "-a" "19d5336b17800126cd8c89eb5960e6dcdf9f82047291e725c96ae7abc19415a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19d5336b17800126cd8c89eb5960e6dcdf9f82047291e725c96ae7abc19415a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19d5336b17800126cd8c89eb5960e6dcdf9f82047291e725c96ae7abc19415a4", kill_on_drop: false }`
[INFO] [stdout] 19d5336b17800126cd8c89eb5960e6dcdf9f82047291e725c96ae7abc19415a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98299906f0a0a9f15ba83f6aa2ff978d179eedc73521370a1152be1b52fb95d6
[INFO] running `Command { std: "docker" "start" "-a" "98299906f0a0a9f15ba83f6aa2ff978d179eedc73521370a1152be1b52fb95d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling hashbrown v0.15.2
[INFO] [stderr]    Compiling winnow v0.7.3
[INFO] [stderr]    Compiling anstream v0.6.18
[INFO] [stderr]    Compiling clap_lex v0.7.4
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling clap_builder v4.5.31
[INFO] [stderr]    Compiling indexmap v2.7.1
[INFO] [stderr]    Compiling quote v1.0.39
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling clap_derive v4.5.28
[INFO] [stderr]    Compiling clap v4.5.31
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling toml_datetime v0.6.8
[INFO] [stderr]    Compiling serde_spanned v0.6.8
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling toml_edit v0.22.24
[INFO] [stderr]    Compiling toml v0.8.20
[INFO] [stderr]    Compiling knob v0.9.65 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Path`
[INFO] [stdout]  --> src/buildsteps.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::path::{Path, PathBuf};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `toml::Value`
[INFO] [stdout]  --> src/compileutils.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use toml::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::types::*`
[INFO] [stdout]  --> src/procutils.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::types::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env::consts`
[INFO] [stdout]  --> src/procutils.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::env::consts;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Component` and `Path`
[INFO] [stdout]  --> src/procutils.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::path::{Component, Path, PathBuf};
[INFO] [stdout]   |                 ^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::*`
[INFO] [stdout]  --> src/procutils.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::time::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Path`
[INFO] [stdout]  --> src/types.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::path::{Path, PathBuf};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/buildsteps.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let mut compiler_args =
[INFO] [stdout]    |         ----^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/compileutils.rs:57:54
[INFO] [stdout]    |
[INFO] [stdout] 57 |                         .fold(Vec::new(), |mut acc, (x, y)| {
[INFO] [stdout]    |                                                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/compileutils.rs:42:54
[INFO] [stdout]    |
[INFO] [stdout] 42 |                         .fold(Vec::new(), |mut acc, (x, y)| {
[INFO] [stdout]    |                                                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `status`
[INFO] [stdout]   --> src/procutils.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |         Ok(status) => return true,
[INFO] [stdout]    |            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_status`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/procutils.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |         Err(e) => return false,
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `code`
[INFO] [stdout]   --> src/procutils.rs:55:21
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 let code = output.status.code().unwrap();
[INFO] [stdout]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:116:21
[INFO] [stdout]     |
[INFO] [stdout] 116 |                 let mut includes_args: Vec<String> = includes
[INFO] [stdout]     |                     ----^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:120:21
[INFO] [stdout]     |
[INFO] [stdout] 120 |                 let mut isys_args = includes.iter().fold(Vec::new(), |mut a, i| {
[INFO] [stdout]     |                     ----^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:186:21
[INFO] [stdout]     |
[INFO] [stdout] 186 |                 let mut args =
[INFO] [stdout]     |                     ----^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `platform`
[INFO] [stdout]   --> src/main.rs:49:28
[INFO] [stdout]    |
[INFO] [stdout] 49 |                 let (dirs, platform, shared, targets) = parse_toml(&*toml);
[INFO] [stdout]    |                            ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_platform`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dirs`
[INFO] [stdout]   --> src/main.rs:92:22
[INFO] [stdout]    |
[INFO] [stdout] 92 |                 let (dirs, platform, shared, target) = parse_toml(&*toml);
[INFO] [stdout]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_dirs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `platform`
[INFO] [stdout]   --> src/main.rs:92:28
[INFO] [stdout]    |
[INFO] [stdout] 92 |                 let (dirs, platform, shared, target) = parse_toml(&*toml);
[INFO] [stdout]    |                            ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_platform`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]   --> src/main.rs:92:46
[INFO] [stdout]    |
[INFO] [stdout] 92 |                 let (dirs, platform, shared, target) = parse_toml(&*toml);
[INFO] [stdout]    |                                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]   --> src/main.rs:97:46
[INFO] [stdout]    |
[INFO] [stdout] 97 |                 let (dirs, platform, shared, target) = parse_toml(&*toml);
[INFO] [stdout]    |                                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sources`
[INFO] [stdout]    --> src/main.rs:109:21
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 let sources = find_sources(&dirs.sources);
[INFO] [stdout]     |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sources`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]    --> src/main.rs:134:25
[INFO] [stdout]     |
[INFO] [stdout] 134 |                     let src = PathBuf::from(&command.file);
[INFO] [stdout]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bin`
[INFO] [stdout]    --> src/main.rs:148:21
[INFO] [stdout]     |
[INFO] [stdout] 148 |                 let bin = compile(
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_bin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 31.47s
[INFO] running `Command { std: "docker" "inspect" "98299906f0a0a9f15ba83f6aa2ff978d179eedc73521370a1152be1b52fb95d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98299906f0a0a9f15ba83f6aa2ff978d179eedc73521370a1152be1b52fb95d6", kill_on_drop: false }`
[INFO] [stdout] 98299906f0a0a9f15ba83f6aa2ff978d179eedc73521370a1152be1b52fb95d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b7c4c3045aa9bad8a068e28354456b90a151231c2f4ff5c6a01a4105b9dda06
[INFO] running `Command { std: "docker" "start" "-a" "0b7c4c3045aa9bad8a068e28354456b90a151231c2f4ff5c6a01a4105b9dda06", kill_on_drop: false }`
[INFO] [stderr]    Compiling knob v0.9.65 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Path`
[INFO] [stdout]  --> src/buildsteps.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::path::{Path, PathBuf};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `toml::Value`
[INFO] [stdout]  --> src/compileutils.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use toml::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::types::*`
[INFO] [stdout]  --> src/procutils.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::types::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env::consts`
[INFO] [stdout]  --> src/procutils.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::env::consts;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Component` and `Path`
[INFO] [stdout]  --> src/procutils.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::path::{Component, Path, PathBuf};
[INFO] [stdout]   |                 ^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::*`
[INFO] [stdout]  --> src/procutils.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::time::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Path`
[INFO] [stdout]  --> src/types.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::path::{Path, PathBuf};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/buildsteps.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let mut compiler_args =
[INFO] [stdout]    |         ----^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/compileutils.rs:57:54
[INFO] [stdout]    |
[INFO] [stdout] 57 |                         .fold(Vec::new(), |mut acc, (x, y)| {
[INFO] [stdout]    |                                                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/compileutils.rs:42:54
[INFO] [stdout]    |
[INFO] [stdout] 42 |                         .fold(Vec::new(), |mut acc, (x, y)| {
[INFO] [stdout]    |                                                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `status`
[INFO] [stdout]   --> src/procutils.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |         Ok(status) => return true,
[INFO] [stdout]    |            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_status`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/procutils.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |         Err(e) => return false,
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `code`
[INFO] [stdout]   --> src/procutils.rs:55:21
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 let code = output.status.code().unwrap();
[INFO] [stdout]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:116:21
[INFO] [stdout]     |
[INFO] [stdout] 116 |                 let mut includes_args: Vec<String> = includes
[INFO] [stdout]     |                     ----^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:120:21
[INFO] [stdout]     |
[INFO] [stdout] 120 |                 let mut isys_args = includes.iter().fold(Vec::new(), |mut a, i| {
[INFO] [stdout]     |                     ----^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:186:21
[INFO] [stdout]     |
[INFO] [stdout] 186 |                 let mut args =
[INFO] [stdout]     |                     ----^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `platform`
[INFO] [stdout]   --> src/main.rs:49:28
[INFO] [stdout]    |
[INFO] [stdout] 49 |                 let (dirs, platform, shared, targets) = parse_toml(&*toml);
[INFO] [stdout]    |                            ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_platform`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dirs`
[INFO] [stdout]   --> src/main.rs:92:22
[INFO] [stdout]    |
[INFO] [stdout] 92 |                 let (dirs, platform, shared, target) = parse_toml(&*toml);
[INFO] [stdout]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_dirs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `platform`
[INFO] [stdout]   --> src/main.rs:92:28
[INFO] [stdout]    |
[INFO] [stdout] 92 |                 let (dirs, platform, shared, target) = parse_toml(&*toml);
[INFO] [stdout]    |                            ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_platform`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]   --> src/main.rs:92:46
[INFO] [stdout]    |
[INFO] [stdout] 92 |                 let (dirs, platform, shared, target) = parse_toml(&*toml);
[INFO] [stdout]    |                                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]   --> src/main.rs:97:46
[INFO] [stdout]    |
[INFO] [stdout] 97 |                 let (dirs, platform, shared, target) = parse_toml(&*toml);
[INFO] [stdout]    |                                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sources`
[INFO] [stdout]    --> src/main.rs:109:21
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 let sources = find_sources(&dirs.sources);
[INFO] [stdout]     |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sources`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]    --> src/main.rs:134:25
[INFO] [stdout]     |
[INFO] [stdout] 134 |                     let src = PathBuf::from(&command.file);
[INFO] [stdout]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bin`
[INFO] [stdout]    --> src/main.rs:148:21
[INFO] [stdout]     |
[INFO] [stdout] 148 |                 let bin = compile(
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_bin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "0b7c4c3045aa9bad8a068e28354456b90a151231c2f4ff5c6a01a4105b9dda06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b7c4c3045aa9bad8a068e28354456b90a151231c2f4ff5c6a01a4105b9dda06", kill_on_drop: false }`
[INFO] [stdout] 0b7c4c3045aa9bad8a068e28354456b90a151231c2f4ff5c6a01a4105b9dda06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3b10529a5ebc1fdbcf679264c875346370c71c6249c557beb97f387a2fefc148
[INFO] running `Command { std: "docker" "start" "-a" "3b10529a5ebc1fdbcf679264c875346370c71c6249c557beb97f387a2fefc148", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Path`
[INFO] [stderr]  --> src/buildsteps.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::path::{Path, PathBuf};
[INFO] [stderr]   |                 ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `toml::Value`
[INFO] [stderr]  --> src/compileutils.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use toml::Value;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::types::*`
[INFO] [stderr]  --> src/procutils.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::types::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env::consts`
[INFO] [stderr]  --> src/procutils.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::env::consts;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Component` and `Path`
[INFO] [stderr]  --> src/procutils.rs:5:17
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::path::{Component, Path, PathBuf};
[INFO] [stderr]   |                 ^^^^^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::*`
[INFO] [stderr]  --> src/procutils.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::time::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Path`
[INFO] [stderr]  --> src/types.rs:3:17
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::path::{Path, PathBuf};
[INFO] [stderr]   |                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/buildsteps.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |     let mut compiler_args =
[INFO] [stderr]    |         ----^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/compileutils.rs:57:54
[INFO] [stderr]    |
[INFO] [stderr] 57 |                         .fold(Vec::new(), |mut acc, (x, y)| {
[INFO] [stderr]    |                                                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/compileutils.rs:42:54
[INFO] [stderr]    |
[INFO] [stderr] 42 |                         .fold(Vec::new(), |mut acc, (x, y)| {
[INFO] [stderr]    |                                                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `status`
[INFO] [stderr]   --> src/procutils.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |         Ok(status) => return true,
[INFO] [stderr]    |            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_status`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/procutils.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |         Err(e) => return false,
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `code`
[INFO] [stderr]   --> src/procutils.rs:55:21
[INFO] [stderr]    |
[INFO] [stderr] 55 |                 let code = output.status.code().unwrap();
[INFO] [stderr]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:116:21
[INFO] [stderr]     |
[INFO] [stderr] 116 |                 let mut includes_args: Vec<String> = includes
[INFO] [stderr]     |                     ----^^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:120:21
[INFO] [stderr]     |
[INFO] [stderr] 120 |                 let mut isys_args = includes.iter().fold(Vec::new(), |mut a, i| {
[INFO] [stderr]     |                     ----^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:186:21
[INFO] [stderr]     |
[INFO] [stderr] 186 |                 let mut args =
[INFO] [stderr]     |                     ----^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `platform`
[INFO] [stderr]   --> src/main.rs:49:28
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 let (dirs, platform, shared, targets) = parse_toml(&*toml);
[INFO] [stderr]    |                            ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_platform`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dirs`
[INFO] [stderr]   --> src/main.rs:92:22
[INFO] [stderr]    |
[INFO] [stderr] 92 |                 let (dirs, platform, shared, target) = parse_toml(&*toml);
[INFO] [stderr]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_dirs`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `platform`
[INFO] [stderr]   --> src/main.rs:92:28
[INFO] [stderr]    |
[INFO] [stderr] 92 |                 let (dirs, platform, shared, target) = parse_toml(&*toml);
[INFO] [stderr]    |                            ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_platform`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `target`
[INFO] [stderr]   --> src/main.rs:92:46
[INFO] [stderr]    |
[INFO] [stderr] 92 |                 let (dirs, platform, shared, target) = parse_toml(&*toml);
[INFO] [stderr]    |                                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `target`
[INFO] [stderr]   --> src/main.rs:97:46
[INFO] [stderr]    |
[INFO] [stderr] 97 |                 let (dirs, platform, shared, target) = parse_toml(&*toml);
[INFO] [stderr]    |                                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sources`
[INFO] [stderr]    --> src/main.rs:109:21
[INFO] [stderr]     |
[INFO] [stderr] 109 |                 let sources = find_sources(&dirs.sources);
[INFO] [stderr]     |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sources`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `src`
[INFO] [stderr]    --> src/main.rs:134:25
[INFO] [stderr]     |
[INFO] [stderr] 134 |                     let src = PathBuf::from(&command.file);
[INFO] [stderr]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bin`
[INFO] [stderr]    --> src/main.rs:148:21
[INFO] [stderr]     |
[INFO] [stderr] 148 |                 let bin = compile(
[INFO] [stderr]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_bin`
[INFO] [stderr] 
[INFO] [stderr] warning: `knob` (bin "knob" test) generated 24 warnings (run `cargo fix --bin "knob" -p knob --tests` to apply 24 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/knob-d802725677f9d020)
[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] running `Command { std: "docker" "inspect" "3b10529a5ebc1fdbcf679264c875346370c71c6249c557beb97f387a2fefc148", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b10529a5ebc1fdbcf679264c875346370c71c6249c557beb97f387a2fefc148", kill_on_drop: false }`
[INFO] [stdout] 3b10529a5ebc1fdbcf679264c875346370c71c6249c557beb97f387a2fefc148
