[INFO] cloning repository https://github.com/Callum-Irving/postfix-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/Callum-Irving/postfix-math-parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCallum-Irving%2Fpostfix-math-parser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCallum-Irving%2Fpostfix-math-parser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5c8498df634b2358d89fed71762e4dfe049dbd05
[INFO] checking Callum-Irving/postfix-math-parser against try#d4bd6c543d189dee2fa075d0b37e31ddc7d111a4 for pr-106073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCallum-Irving%2Fpostfix-math-parser" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Callum-Irving/postfix-math-parser on toolchain d4bd6c543d189dee2fa075d0b37e31ddc7d111a4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d4bd6c543d189dee2fa075d0b37e31ddc7d111a4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Callum-Irving/postfix-math-parser
[INFO] finished tweaking git repo https://github.com/Callum-Irving/postfix-math-parser
[INFO] tweaked toml for git repo https://github.com/Callum-Irving/postfix-math-parser written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Callum-Irving/postfix-math-parser already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d4bd6c543d189dee2fa075d0b37e31ddc7d111a4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:9db6adea6fe108e8475f2314ed6ea91319efc655499b550640da2809d69ffe6a" "/opt/rustwide/cargo-home/bin/cargo" "+d4bd6c543d189dee2fa075d0b37e31ddc7d111a4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 303f21ffccfb68662373de0db5a5c55e00e89c8f125d9a1d12e08ea35782ad24
[INFO] running `Command { std: "docker" "start" "-a" "303f21ffccfb68662373de0db5a5c55e00e89c8f125d9a1d12e08ea35782ad24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "303f21ffccfb68662373de0db5a5c55e00e89c8f125d9a1d12e08ea35782ad24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "303f21ffccfb68662373de0db5a5c55e00e89c8f125d9a1d12e08ea35782ad24", kill_on_drop: false }`
[INFO] [stdout] 303f21ffccfb68662373de0db5a5c55e00e89c8f125d9a1d12e08ea35782ad24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:9db6adea6fe108e8475f2314ed6ea91319efc655499b550640da2809d69ffe6a" "/opt/rustwide/cargo-home/bin/cargo" "+d4bd6c543d189dee2fa075d0b37e31ddc7d111a4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be0ef9d2fc0dbd069c26f5f5fb6e2b43b277653730915e84fe01be7d58148fd1
[INFO] running `Command { std: "docker" "start" "-a" "be0ef9d2fc0dbd069c26f5f5fb6e2b43b277653730915e84fe01be7d58148fd1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.4.7
[INFO] [stderr]    Compiling az v1.2.0
[INFO] [stderr]    Compiling rug v1.14.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking postfix_calc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `MultipleVariableDef` is never constructed
[INFO] [stdout]    --> src/interpreter.rs:135:5
[INFO] [stdout]     |
[INFO] [stdout] 128 | pub enum CalcError {
[INFO] [stdout]     |          --------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 135 |     MultipleVariableDef,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `CalcError` 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `MultipleVariableDef` is never constructed
[INFO] [stdout]    --> src/interpreter.rs:135:5
[INFO] [stdout]     |
[INFO] [stdout] 128 | pub enum CalcError {
[INFO] [stdout]     |          --------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 135 |     MultipleVariableDef,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `CalcError` 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 32s
[INFO] running `Command { std: "docker" "inspect" "be0ef9d2fc0dbd069c26f5f5fb6e2b43b277653730915e84fe01be7d58148fd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be0ef9d2fc0dbd069c26f5f5fb6e2b43b277653730915e84fe01be7d58148fd1", kill_on_drop: false }`
[INFO] [stdout] be0ef9d2fc0dbd069c26f5f5fb6e2b43b277653730915e84fe01be7d58148fd1