[INFO] cloning repository https://github.com/DarioBiscevic/eq-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DarioBiscevic/eq-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDarioBiscevic%2Feq-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDarioBiscevic%2Feq-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9e2bd301718040a36c31765e2d3b8e85abed0b95
[INFO] checking DarioBiscevic/eq-solver against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDarioBiscevic%2Feq-solver" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DarioBiscevic/eq-solver on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DarioBiscevic/eq-solver
[INFO] finished tweaking git repo https://github.com/DarioBiscevic/eq-solver
[INFO] tweaked toml for git repo https://github.com/DarioBiscevic/eq-solver written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/DarioBiscevic/eq-solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c19af477ea127502598bab096e35b52968ea5a3736597ac96d6cc6703d72140
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1c19af477ea127502598bab096e35b52968ea5a3736597ac96d6cc6703d72140", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c19af477ea127502598bab096e35b52968ea5a3736597ac96d6cc6703d72140", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c19af477ea127502598bab096e35b52968ea5a3736597ac96d6cc6703d72140", kill_on_drop: false }`
[INFO] [stdout] 1c19af477ea127502598bab096e35b52968ea5a3736597ac96d6cc6703d72140
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97e0ec16667ec6816ddff31dfe98f696d9f80d8efe1f7d56a48d20e75ebdd391
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "97e0ec16667ec6816ddff31dfe98f696d9f80d8efe1f7d56a48d20e75ebdd391", kill_on_drop: false }`
[INFO] [stderr]     Checking eq_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `equals_index`
[INFO] [stdout]   --> src/lib/mod.rs:34:18
[INFO] [stdout]    |
[INFO] [stdout] 34 |     if let Some((equals_index, _)) = char_iterator().find(|(_, ch)| ch == &'='){
[INFO] [stdout]    |                  ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_equals_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Element`
[INFO] [stdout]  --> src/lib/mod.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Element{
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Equation`
[INFO] [stdout]   --> src/lib/mod.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Equation{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `equals_index`
[INFO] [stdout]   --> src/lib/mod.rs:34:18
[INFO] [stdout]    |
[INFO] [stdout] 34 |     if let Some((equals_index, _)) = char_iterator().find(|(_, ch)| ch == &'='){
[INFO] [stdout]    |                  ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_equals_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Element`
[INFO] [stdout]  --> src/lib/mod.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Element{
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Equation`
[INFO] [stdout]   --> src/lib/mod.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Equation{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "97e0ec16667ec6816ddff31dfe98f696d9f80d8efe1f7d56a48d20e75ebdd391", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97e0ec16667ec6816ddff31dfe98f696d9f80d8efe1f7d56a48d20e75ebdd391", kill_on_drop: false }`
[INFO] [stdout] 97e0ec16667ec6816ddff31dfe98f696d9f80d8efe1f7d56a48d20e75ebdd391