[INFO] cloning repository https://github.com/Gammaglobulino/parse_math
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Gammaglobulino/parse_math" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGammaglobulino%2Fparse_math", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGammaglobulino%2Fparse_math'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 910ec48d9f0e47aee9ca48529f8084259353181a
[INFO] checking Gammaglobulino/parse_math against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGammaglobulino%2Fparse_math" "/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/Gammaglobulino/parse_math on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Gammaglobulino/parse_math
[INFO] finished tweaking git repo https://github.com/Gammaglobulino/parse_math
[INFO] tweaked toml for git repo https://github.com/Gammaglobulino/parse_math written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Gammaglobulino/parse_math already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ff7be3515a9feea9b31512a76eb552783a9eb4a68352ae93fe2c0af94291d52
[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" "4ff7be3515a9feea9b31512a76eb552783a9eb4a68352ae93fe2c0af94291d52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ff7be3515a9feea9b31512a76eb552783a9eb4a68352ae93fe2c0af94291d52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ff7be3515a9feea9b31512a76eb552783a9eb4a68352ae93fe2c0af94291d52", kill_on_drop: false }`
[INFO] [stdout] 4ff7be3515a9feea9b31512a76eb552783a9eb4a68352ae93fe2c0af94291d52
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 138c2c2bbce558960112a06c0343ce9707c1499dd939b616bdbd43731bc7656c
[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" "138c2c2bbce558960112a06c0343ce9707c1499dd939b616bdbd43731bc7656c", kill_on_drop: false }`
[INFO] [stderr]     Checking parse_math v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `Parser`
[INFO] [stdout]  --> src/parsemath/parser.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Parser<'a> {
[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: `new`
[INFO] [stdout]   --> src/parsemath/parser.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(expr: &'a str) -> Result<Self, ParseError> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_next_token`
[INFO] [stdout]   --> src/parsemath/parser.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn get_next_token(&mut self) -> Result<(), ParseError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnableToParse`
[INFO] [stdout]   --> src/parsemath/parser.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     UnableToParse(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InvalidOperator`
[INFO] [stdout]   --> src/parsemath/parser.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     InvalidOperator(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/parsemath/tokenizer.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new(new_expr: &'a str) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnableToParse`
[INFO] [stdout]   --> src/parsemath/parser.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     UnableToParse(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "138c2c2bbce558960112a06c0343ce9707c1499dd939b616bdbd43731bc7656c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "138c2c2bbce558960112a06c0343ce9707c1499dd939b616bdbd43731bc7656c", kill_on_drop: false }`
[INFO] [stdout] 138c2c2bbce558960112a06c0343ce9707c1499dd939b616bdbd43731bc7656c