[INFO] cloning repository https://github.com/Shyclops/calculator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Shyclops/calculator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShyclops%2Fcalculator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShyclops%2Fcalculator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dc435ff53aaaefba7a9a294180c657b9694393a3
[INFO] checking Shyclops/calculator against master#cfbc6d4cf1acbac5c025acf8ed68929caa551df3 for pr-75494-beta
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShyclops%2Fcalculator" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Shyclops/calculator on toolchain cfbc6d4cf1acbac5c025acf8ed68929caa551df3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Shyclops/calculator
[INFO] finished tweaking git repo https://github.com/Shyclops/calculator
[INFO] tweaked toml for git repo https://github.com/Shyclops/calculator written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Shyclops/calculator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ffa6eca47698332d4090db48036bb3852a27956ba4286b25112606375c712355
[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" "ffa6eca47698332d4090db48036bb3852a27956ba4286b25112606375c712355", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffa6eca47698332d4090db48036bb3852a27956ba4286b25112606375c712355", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffa6eca47698332d4090db48036bb3852a27956ba4286b25112606375c712355", kill_on_drop: false }`
[INFO] [stdout] ffa6eca47698332d4090db48036bb3852a27956ba4286b25112606375c712355
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18b180854f14573795e6119c1d3e58ead95f20e930e1d2d31d5a58960fdaf730
[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" "18b180854f14573795e6119c1d3e58ead95f20e930e1d2d31d5a58960fdaf730", kill_on_drop: false }`
[INFO] [stderr]     Checking calculator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `operators`
[INFO] [stdout]   --> src/reverse_polish_notation/parser.rs:17:6
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut operators: Vec<Expression> = Vec::new();
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_operators`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]   --> src/reverse_polish_notation/parser.rs:21:25
[INFO] [stdout]    |
[INFO] [stdout] 21 |             Expression::Operator(o)    => {},
[INFO] [stdout]    |                                  ^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/reverse_polish_notation/parser.rs:22:20
[INFO] [stdout]    |
[INFO] [stdout] 22 |             Expression::Val(v)        => output.push(ex),
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]   --> src/reverse_polish_notation/parser.rs:82:19
[INFO] [stdout]    |
[INFO] [stdout] 82 | fn get_precedence(operator: String) -> i8 {
[INFO] [stdout]    |                   ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_operator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/reverse_polish_notation/parser.rs:17:6
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut operators: Vec<Expression> = Vec::new();
[INFO] [stdout]    |         ----^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_precedence`
[INFO] [stdout]   --> src/reverse_polish_notation/parser.rs:82:4
[INFO] [stdout]    |
[INFO] [stdout] 82 | fn get_precedence(operator: String) -> i8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operators`
[INFO] [stdout]   --> src/reverse_polish_notation/parser.rs:17:6
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut operators: Vec<Expression> = Vec::new();
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_operators`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]   --> src/reverse_polish_notation/parser.rs:21:25
[INFO] [stdout]    |
[INFO] [stdout] 21 |             Expression::Operator(o)    => {},
[INFO] [stdout]    |                                  ^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/reverse_polish_notation/parser.rs:22:20
[INFO] [stdout]    |
[INFO] [stdout] 22 |             Expression::Val(v)        => output.push(ex),
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]   --> src/reverse_polish_notation/parser.rs:82:19
[INFO] [stdout]    |
[INFO] [stdout] 82 | fn get_precedence(operator: String) -> i8 {
[INFO] [stdout]    |                   ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_operator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/reverse_polish_notation/parser.rs:17:6
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut operators: Vec<Expression> = Vec::new();
[INFO] [stdout]    |         ----^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_precedence`
[INFO] [stdout]   --> src/reverse_polish_notation/parser.rs:82:4
[INFO] [stdout]    |
[INFO] [stdout] 82 | fn get_precedence(operator: String) -> i8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "18b180854f14573795e6119c1d3e58ead95f20e930e1d2d31d5a58960fdaf730", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18b180854f14573795e6119c1d3e58ead95f20e930e1d2d31d5a58960fdaf730", kill_on_drop: false }`
[INFO] [stdout] 18b180854f14573795e6119c1d3e58ead95f20e930e1d2d31d5a58960fdaf730
