[INFO] cloning repository https://github.com/mathiusj/calc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mathiusj/calc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmathiusj%2Fcalc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmathiusj%2Fcalc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 498bc6ad49cef9872416e56903eddb13f484cc42
[INFO] checking mathiusj/calc against master#9c3064e131f4939cc95a29bb11413c49bbda1491 for pr-144098
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmathiusj%2Fcalc" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mathiusj/calc
[INFO] finished tweaking git repo https://github.com/mathiusj/calc
[INFO] tweaked toml for git repo https://github.com/mathiusj/calc written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mathiusj/calc on toolchain 9c3064e131f4939cc95a29bb11413c49bbda1491
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mathiusj/calc 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" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking mathiusj/calc against master#9c3064e131f4939cc95a29bb11413c49bbda1491 for pr-144098
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmathiusj%2Fcalc" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mathiusj/calc
[INFO] finished tweaking git repo https://github.com/mathiusj/calc
[INFO] tweaked toml for git repo https://github.com/mathiusj/calc written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mathiusj/calc on toolchain 9c3064e131f4939cc95a29bb11413c49bbda1491
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mathiusj/calc 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" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a0c1c8bede325bd6692e40296f1f0acea60f2d7108092b518ba4930e018d0017
[INFO] running `Command { std: "docker" "start" "-a" "a0c1c8bede325bd6692e40296f1f0acea60f2d7108092b518ba4930e018d0017", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a0c1c8bede325bd6692e40296f1f0acea60f2d7108092b518ba4930e018d0017", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0c1c8bede325bd6692e40296f1f0acea60f2d7108092b518ba4930e018d0017", kill_on_drop: false }`
[INFO] [stdout] a0c1c8bede325bd6692e40296f1f0acea60f2d7108092b518ba4930e018d0017
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8de83d8a80a11b17589bc588ad204d1a8949fa51ef45c10dcc9450e99f1250b6
[INFO] running `Command { std: "docker" "start" "-a" "8de83d8a80a11b17589bc588ad204d1a8949fa51ef45c10dcc9450e99f1250b6", kill_on_drop: false }`
[INFO] [stderr]     Checking calc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/lib.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         (left, _) =>{
[INFO] [stdout]    |         ^^^^^^^^^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/lib.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         (Some(left), Some(right)) => {
[INFO] [stdout]    |         ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 33 |         (_, right) =>{
[INFO] [stdout]    |         ---------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 36 |         (left, _) =>{
[INFO] [stdout]    |         ^^^^^^^^^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/lib.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         (_, _) => {
[INFO] [stdout]    |         ^^^^^^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/lib.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         (Some(left), Some(right)) => {
[INFO] [stdout]    |         ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 33 |         (_, right) =>{
[INFO] [stdout]    |         ---------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 39 |         (_, _) => {
[INFO] [stdout]    |         ^^^^^^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/lib.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |         (_, right) =>{
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_right`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]   --> src/lib.rs:36:10
[INFO] [stdout]    |
[INFO] [stdout] 36 |         (left, _) =>{
[INFO] [stdout]    |          ^^^^ help: if this is intentional, prefix it with an underscore: `_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `callback`
[INFO] [stdout]   --> src/lib.rs:27:35
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn popStack(mut stack: Vec<Expr>, callback: Expr) {
[INFO] [stdout]    |                                   ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_callback`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/lib.rs:58:21
[INFO] [stdout]    |
[INFO] [stdout] 58 |                     (left, _) =>{
[INFO] [stdout]    |                     ^^^^^^^^^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/lib.rs:58:21
[INFO] [stdout]    |
[INFO] [stdout] 51 |                     (Some(left), Some(right)) => {
[INFO] [stdout]    |                     ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 54 |                     (_, right) =>{
[INFO] [stdout]    |                     ---------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 58 |                     (left, _) =>{
[INFO] [stdout]    |                     ^^^^^^^^^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/lib.rs:61:21
[INFO] [stdout]    |
[INFO] [stdout] 61 |                     (_, _) => {
[INFO] [stdout]    |                     ^^^^^^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/lib.rs:61:21
[INFO] [stdout]    |
[INFO] [stdout] 51 |                     (Some(left), Some(right)) => {
[INFO] [stdout]    |                     ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 54 |                     (_, right) =>{
[INFO] [stdout]    |                     ---------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 61 |                     (_, _) => {
[INFO] [stdout]    |                     ^^^^^^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/lib.rs:76:21
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     (left, _) =>{
[INFO] [stdout]    |                     ^^^^^^^^^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/lib.rs:76:21
[INFO] [stdout]    |
[INFO] [stdout] 69 |                     (Some(left), Some(right)) => {
[INFO] [stdout]    |                     ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 72 |                     (_, right) =>{
[INFO] [stdout]    |                     ---------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 76 |                     (left, _) =>{
[INFO] [stdout]    |                     ^^^^^^^^^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/lib.rs:79:21
[INFO] [stdout]    |
[INFO] [stdout] 79 |                     (_, _) => {
[INFO] [stdout]    |                     ^^^^^^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/lib.rs:79:21
[INFO] [stdout]    |
[INFO] [stdout] 69 |                     (Some(left), Some(right)) => {
[INFO] [stdout]    |                     ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 72 |                     (_, right) =>{
[INFO] [stdout]    |                     ---------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 79 |                     (_, _) => {
[INFO] [stdout]    |                     ^^^^^^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/lib.rs:54:25
[INFO] [stdout]    |
[INFO] [stdout] 54 |                     (_, right) =>{
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]   --> src/lib.rs:58:22
[INFO] [stdout]    |
[INFO] [stdout] 58 |                     (left, _) =>{
[INFO] [stdout]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/lib.rs:72:25
[INFO] [stdout]    |
[INFO] [stdout] 72 |                     (_, right) =>{
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]   --> src/lib.rs:76:22
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     (left, _) =>{
[INFO] [stdout]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Expr` is never used
[INFO] [stdout]  --> src/lib.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum Expr {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `EvalError` is never used
[INFO] [stdout]   --> src/lib.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum EvalError {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eval` is never used
[INFO] [stdout]   --> src/lib.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn eval(expr: &Expr) -> Result<i64, EvalError> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ParseError` is never used
[INFO] [stdout]   --> src/lib.rs:23:6
[INFO] [stdout]    |
[INFO] [stdout] 23 | enum ParseError {
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `popStack` is never used
[INFO] [stdout]   --> src/lib.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn popStack(mut stack: Vec<Expr>, callback: Expr) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse` is never used
[INFO] [stdout]   --> src/lib.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn parse(input: &str) -> Result<Expr, ParseError> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `popStack` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn popStack(mut stack: Vec<Expr>, callback: Expr) {
[INFO] [stdout]    |    ^^^^^^^^ help: convert the identifier to snake case: `pop_stack`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/lib.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         (left, _) =>{
[INFO] [stdout]    |         ^^^^^^^^^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/lib.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         (Some(left), Some(right)) => {
[INFO] [stdout]    |         ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 33 |         (_, right) =>{
[INFO] [stdout]    |         ---------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 36 |         (left, _) =>{
[INFO] [stdout]    |         ^^^^^^^^^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/lib.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         (_, _) => {
[INFO] [stdout]    |         ^^^^^^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/lib.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         (Some(left), Some(right)) => {
[INFO] [stdout]    |         ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 33 |         (_, right) =>{
[INFO] [stdout]    |         ---------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 39 |         (_, _) => {
[INFO] [stdout]    |         ^^^^^^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/lib.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |         (_, right) =>{
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_right`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]   --> src/lib.rs:36:10
[INFO] [stdout]    |
[INFO] [stdout] 36 |         (left, _) =>{
[INFO] [stdout]    |          ^^^^ help: if this is intentional, prefix it with an underscore: `_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `callback`
[INFO] [stdout]   --> src/lib.rs:27:35
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn popStack(mut stack: Vec<Expr>, callback: Expr) {
[INFO] [stdout]    |                                   ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_callback`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/lib.rs:58:21
[INFO] [stdout]    |
[INFO] [stdout] 58 |                     (left, _) =>{
[INFO] [stdout]    |                     ^^^^^^^^^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/lib.rs:58:21
[INFO] [stdout]    |
[INFO] [stdout] 51 |                     (Some(left), Some(right)) => {
[INFO] [stdout]    |                     ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 54 |                     (_, right) =>{
[INFO] [stdout]    |                     ---------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 58 |                     (left, _) =>{
[INFO] [stdout]    |                     ^^^^^^^^^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/lib.rs:61:21
[INFO] [stdout]    |
[INFO] [stdout] 61 |                     (_, _) => {
[INFO] [stdout]    |                     ^^^^^^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/lib.rs:61:21
[INFO] [stdout]    |
[INFO] [stdout] 51 |                     (Some(left), Some(right)) => {
[INFO] [stdout]    |                     ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 54 |                     (_, right) =>{
[INFO] [stdout]    |                     ---------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 61 |                     (_, _) => {
[INFO] [stdout]    |                     ^^^^^^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/lib.rs:76:21
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     (left, _) =>{
[INFO] [stdout]    |                     ^^^^^^^^^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/lib.rs:76:21
[INFO] [stdout]    |
[INFO] [stdout] 69 |                     (Some(left), Some(right)) => {
[INFO] [stdout]    |                     ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 72 |                     (_, right) =>{
[INFO] [stdout]    |                     ---------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 76 |                     (left, _) =>{
[INFO] [stdout]    |                     ^^^^^^^^^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/lib.rs:79:21
[INFO] [stdout]    |
[INFO] [stdout] 79 |                     (_, _) => {
[INFO] [stdout]    |                     ^^^^^^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/lib.rs:79:21
[INFO] [stdout]    |
[INFO] [stdout] 69 |                     (Some(left), Some(right)) => {
[INFO] [stdout]    |                     ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 72 |                     (_, right) =>{
[INFO] [stdout]    |                     ---------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 79 |                     (_, _) => {
[INFO] [stdout]    |                     ^^^^^^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/lib.rs:54:25
[INFO] [stdout]    |
[INFO] [stdout] 54 |                     (_, right) =>{
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]   --> src/lib.rs:58:22
[INFO] [stdout]    |
[INFO] [stdout] 58 |                     (left, _) =>{
[INFO] [stdout]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/lib.rs:72:25
[INFO] [stdout]    |
[INFO] [stdout] 72 |                     (_, right) =>{
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]   --> src/lib.rs:76:22
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     (left, _) =>{
[INFO] [stdout]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `popStack` is never used
[INFO] [stdout]   --> src/lib.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn popStack(mut stack: Vec<Expr>, callback: Expr) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `popStack` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn popStack(mut stack: Vec<Expr>, callback: Expr) {
[INFO] [stdout]    |    ^^^^^^^^ help: convert the identifier to snake case: `pop_stack`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "8de83d8a80a11b17589bc588ad204d1a8949fa51ef45c10dcc9450e99f1250b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8de83d8a80a11b17589bc588ad204d1a8949fa51ef45c10dcc9450e99f1250b6", kill_on_drop: false }`
[INFO] [stdout] 8de83d8a80a11b17589bc588ad204d1a8949fa51ef45c10dcc9450e99f1250b6