[INFO] cloning repository https://github.com/ayushsherpa111/math_parser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ayushsherpa111/math_parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fayushsherpa111%2Fmath_parser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fayushsherpa111%2Fmath_parser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d40934afeb1d5d6eb22d654f5864ce1f0debd01b
[INFO] building ayushsherpa111/math_parser against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fayushsherpa111%2Fmath_parser" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ayushsherpa111/math_parser on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ayushsherpa111/math_parser
[INFO] finished tweaking git repo https://github.com/ayushsherpa111/math_parser
[INFO] tweaked toml for git repo https://github.com/ayushsherpa111/math_parser written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ayushsherpa111/math_parser 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 570c469b203cb3b8aac486bf8e18d5d5b47742bf60fcf82fa988c289f0165ff5
[INFO] running `Command { std: "docker" "start" "-a" "570c469b203cb3b8aac486bf8e18d5d5b47742bf60fcf82fa988c289f0165ff5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "570c469b203cb3b8aac486bf8e18d5d5b47742bf60fcf82fa988c289f0165ff5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "570c469b203cb3b8aac486bf8e18d5d5b47742bf60fcf82fa988c289f0165ff5", kill_on_drop: false }`
[INFO] [stdout] 570c469b203cb3b8aac486bf8e18d5d5b47742bf60fcf82fa988c289f0165ff5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30f1b38e3c1fbfef4388b68c442365b1edc8b52b2dc4688d8084a585dba05a9e
[INFO] running `Command { std: "docker" "start" "-a" "30f1b38e3c1fbfef4388b68c442365b1edc8b52b2dc4688d8084a585dba05a9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]    Compiling math_parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Expr` is never constructed
[INFO] [stdout]  --> src/parser/operations.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Operand{
[INFO] [stdout]   |          ------- variant in this enum
[INFO] [stdout] 3 |     Expr(Expression)
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Operand` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `divisor` and `dividend` are never read
[INFO] [stdout]   --> src/parser/operations.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub struct Term {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     pub divisor: Vec<Operand>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 15 |     pub dividend: Vec<Operand>
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Term` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `terms` is never read
[INFO] [stdout]   --> src/parser/operations.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Expression{
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 22 |     pub terms: Vec<Term>
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Expression` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.73s
[INFO] running `Command { std: "docker" "inspect" "30f1b38e3c1fbfef4388b68c442365b1edc8b52b2dc4688d8084a585dba05a9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30f1b38e3c1fbfef4388b68c442365b1edc8b52b2dc4688d8084a585dba05a9e", kill_on_drop: false }`
[INFO] [stdout] 30f1b38e3c1fbfef4388b68c442365b1edc8b52b2dc4688d8084a585dba05a9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b6c10bb989b7febdc461864e237f2789cb9517fc2fd70ca696446c6e35683ed
[INFO] running `Command { std: "docker" "start" "-a" "2b6c10bb989b7febdc461864e237f2789cb9517fc2fd70ca696446c6e35683ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling math_parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Expr` is never constructed
[INFO] [stdout]  --> src/parser/operations.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Operand{
[INFO] [stdout]   |          ------- variant in this enum
[INFO] [stdout] 3 |     Expr(Expression)
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Operand` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `divisor` and `dividend` are never read
[INFO] [stdout]   --> src/parser/operations.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub struct Term {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     pub divisor: Vec<Operand>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 15 |     pub dividend: Vec<Operand>
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Term` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `terms` is never read
[INFO] [stdout]   --> src/parser/operations.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Expression{
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 22 |     pub terms: Vec<Term>
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Expression` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "2b6c10bb989b7febdc461864e237f2789cb9517fc2fd70ca696446c6e35683ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b6c10bb989b7febdc461864e237f2789cb9517fc2fd70ca696446c6e35683ed", kill_on_drop: false }`
[INFO] [stdout] 2b6c10bb989b7febdc461864e237f2789cb9517fc2fd70ca696446c6e35683ed