[INFO] cloning repository https://github.com/Aapuji/math-lang-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Aapuji/math-lang-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAapuji%2Fmath-lang-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAapuji%2Fmath-lang-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2bab3c3be8b8c53198690e9ea57f899ee5f78af6
[INFO] checking Aapuji/math-lang-rs against master#8f21a5c92ea55c348c275a1bc4fedbdf181e0d64 for pr-143011
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAapuji%2Fmath-lang-rs" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Aapuji/math-lang-rs
[INFO] finished tweaking git repo https://github.com/Aapuji/math-lang-rs
[INFO] tweaked toml for git repo https://github.com/Aapuji/math-lang-rs written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Aapuji/math-lang-rs on toolchain 8f21a5c92ea55c348c275a1bc4fedbdf181e0d64
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Aapuji/math-lang-rs 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" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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_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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] abd855de2aa7ef4cf74f636406646e2477a24ca8a03cf0807291ec7efe36b074
[INFO] running `Command { std: "docker" "start" "-a" "abd855de2aa7ef4cf74f636406646e2477a24ca8a03cf0807291ec7efe36b074", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "abd855de2aa7ef4cf74f636406646e2477a24ca8a03cf0807291ec7efe36b074", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abd855de2aa7ef4cf74f636406646e2477a24ca8a03cf0807291ec7efe36b074", kill_on_drop: false }`
[INFO] [stdout] abd855de2aa7ef4cf74f636406646e2477a24ca8a03cf0807291ec7efe36b074
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 462ab6e0102e6022ca10df3e9aeb6d6575583925fc3123a629b5e206fe5ee84c
[INFO] running `Command { std: "docker" "start" "-a" "462ab6e0102e6022ca10df3e9aeb6d6575583925fc3123a629b5e206fe5ee84c", kill_on_drop: false }`
[INFO] [stderr]     Checking math-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/config.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 |   File(String)
[INFO] [stdout]   |   ---- ^^^^^^
[INFO] [stdout]   |   |
[INFO] [stdout]   |   field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Mode` 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] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 4 -   File(String)
[INFO] [stdout] 4 +   File(())
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `mode` is never read
[INFO] [stdout]  --> src/config.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Config {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 9 |   mode: Mode
[INFO] [stdout]   |   ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Config` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `mode` is never used
[INFO] [stdout]   --> src/config.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Config {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 30 |   fn mode(&self) -> Mode {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/config.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 |   File(String)
[INFO] [stdout]   |   ---- ^^^^^^
[INFO] [stdout]   |   |
[INFO] [stdout]   |   field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Mode` 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] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 4 -   File(String)
[INFO] [stdout] 4 +   File(())
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `mode` is never read
[INFO] [stdout]  --> src/config.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Config {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 9 |   mode: Mode
[INFO] [stdout]   |   ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Config` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `mode` is never used
[INFO] [stdout]   --> src/config.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Config {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 30 |   fn mode(&self) -> Mode {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]  --> src/main.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 |   let config = Config::build(env::args()).unwrap_or_else(|err| {
[INFO] [stdout]   |       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]  --> src/main.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 |   let config = Config::build(env::args()).unwrap_or_else(|err| {
[INFO] [stdout]   |       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "462ab6e0102e6022ca10df3e9aeb6d6575583925fc3123a629b5e206fe5ee84c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "462ab6e0102e6022ca10df3e9aeb6d6575583925fc3123a629b5e206fe5ee84c", kill_on_drop: false }`
[INFO] [stdout] 462ab6e0102e6022ca10df3e9aeb6d6575583925fc3123a629b5e206fe5ee84c
