[INFO] cloning repository https://github.com/cartoon-raccoon/verdigris
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cartoon-raccoon/verdigris" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcartoon-raccoon%2Fverdigris", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcartoon-raccoon%2Fverdigris'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e613054d778b9bbae7910675d2006cf94b5381bb
[INFO] checking cartoon-raccoon/verdigris against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcartoon-raccoon%2Fverdigris" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cartoon-raccoon/verdigris on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cartoon-raccoon/verdigris
[INFO] finished tweaking git repo https://github.com/cartoon-raccoon/verdigris
[INFO] tweaked toml for git repo https://github.com/cartoon-raccoon/verdigris written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/cartoon-raccoon/verdigris already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 938c298d156872f404d93bd0666341ee0df01f2bab9973e977f2c3cbaea093a0
[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" "938c298d156872f404d93bd0666341ee0df01f2bab9973e977f2c3cbaea093a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "938c298d156872f404d93bd0666341ee0df01f2bab9973e977f2c3cbaea093a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "938c298d156872f404d93bd0666341ee0df01f2bab9973e977f2c3cbaea093a0", kill_on_drop: false }`
[INFO] [stdout] 938c298d156872f404d93bd0666341ee0df01f2bab9973e977f2c3cbaea093a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 134ad98891de9cdfc2db9764d837d6757d3a1b136167901d9fe964d8b15df59a
[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" "134ad98891de9cdfc2db9764d837d6757d3a1b136167901d9fe964d8b15df59a", kill_on_drop: false }`
[INFO] [stderr]     Checking verdigris v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `scanner`
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let scanner = Lexer::new();
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_scanner`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/lexer.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn from(t: TokenType) -> String {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `prevc` is assigned to, but never used
[INFO] [stdout]    --> src/lexer.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |         let mut prevc: char;
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_prevc` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `prevc` is never read
[INFO] [stdout]    --> src/lexer.rs:149:13
[INFO] [stdout]     |
[INFO] [stdout] 149 |             prevc = c;
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/lexer.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 74 |     pub fn to_string(&self) -> String {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan`
[INFO] [stdout]   --> src/lexer.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn scan(&mut self, input: &str) { //Change this return a result type
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scanner`
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let scanner = Lexer::new();
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_scanner`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/lexer.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn from(t: TokenType) -> String {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `prevc` is assigned to, but never used
[INFO] [stdout]    --> src/lexer.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |         let mut prevc: char;
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_prevc` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `prevc` is never read
[INFO] [stdout]    --> src/lexer.rs:149:13
[INFO] [stdout]     |
[INFO] [stdout] 149 |             prevc = c;
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/lexer.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 74 |     pub fn to_string(&self) -> String {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan`
[INFO] [stdout]   --> src/lexer.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn scan(&mut self, input: &str) { //Change this return a result type
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "134ad98891de9cdfc2db9764d837d6757d3a1b136167901d9fe964d8b15df59a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "134ad98891de9cdfc2db9764d837d6757d3a1b136167901d9fe964d8b15df59a", kill_on_drop: false }`
[INFO] [stdout] 134ad98891de9cdfc2db9764d837d6757d3a1b136167901d9fe964d8b15df59a