[INFO] cloning repository https://github.com/thepointsupporter/exp-eval
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/thepointsupporter/exp-eval" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthepointsupporter%2Fexp-eval", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthepointsupporter%2Fexp-eval'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 450eec3ba1ee462b400e4071400269546045df2a
[INFO] checking thepointsupporter/exp-eval against try#b98202ad067d72e45cec8be3d5c15d86ef0fd086 for pr-155193
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthepointsupporter%2Fexp-eval" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/thepointsupporter/exp-eval
[INFO] finished tweaking git repo https://github.com/thepointsupporter/exp-eval
[INFO] tweaked toml for git repo https://github.com/thepointsupporter/exp-eval written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/thepointsupporter/exp-eval on toolchain b98202ad067d72e45cec8be3d5c15d86ef0fd086
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/thepointsupporter/exp-eval 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" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "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 thepointsupporter/exp-eval against try#b98202ad067d72e45cec8be3d5c15d86ef0fd086 for pr-155193
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthepointsupporter%2Fexp-eval" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/thepointsupporter/exp-eval
[INFO] finished tweaking git repo https://github.com/thepointsupporter/exp-eval
[INFO] tweaked toml for git repo https://github.com/thepointsupporter/exp-eval written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/thepointsupporter/exp-eval on toolchain b98202ad067d72e45cec8be3d5c15d86ef0fd086
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/thepointsupporter/exp-eval 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" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0eb2bc47a7bd198b6d95b84f83892f761da6226d9226c0802b8c62e88d6ccb6b
[INFO] running `Command { std: "docker" "start" "-a" "0eb2bc47a7bd198b6d95b84f83892f761da6226d9226c0802b8c62e88d6ccb6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0eb2bc47a7bd198b6d95b84f83892f761da6226d9226c0802b8c62e88d6ccb6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eb2bc47a7bd198b6d95b84f83892f761da6226d9226c0802b8c62e88d6ccb6b", kill_on_drop: false }`
[INFO] [stdout] 0eb2bc47a7bd198b6d95b84f83892f761da6226d9226c0802b8c62e88d6ccb6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5fc1ce4e8d6a767dca246a949c04ebd1225dca176c3367926761c3bf378280a8
[INFO] running `Command { std: "docker" "start" "-a" "5fc1ce4e8d6a767dca246a949c04ebd1225dca176c3367926761c3bf378280a8", kill_on_drop: false }`
[INFO] [stderr]     Checking exp-eval v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `add` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:143:9
[INFO] [stdout]     |
[INFO] [stdout] 143 |         add,
[INFO] [stdout]     |         ^^^ help: convert the identifier to upper camel case: `Add`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `mul` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |         mul,
[INFO] [stdout]     |         ^^^ help: convert the identifier to upper camel case: `Mul`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `div` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 |         div,
[INFO] [stdout]     |         ^^^ help: convert the identifier to upper camel case: `Div`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `sub` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |         sub,
[INFO] [stdout]     |         ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Sub`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `opbr` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |         opbr,
[INFO] [stdout]     |         ^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Opbr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `clbr` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:148:9
[INFO] [stdout]     |
[INFO] [stdout] 148 |         clbr,
[INFO] [stdout]     |         ^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Clbr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `dig` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:149:9
[INFO] [stdout]     |
[INFO] [stdout] 149 |         dig,
[INFO] [stdout]     |         ^^^ help: convert the identifier to upper camel case: `Dig`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `dec` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 150 |         dec,
[INFO] [stdout]     |         ^^^ help: convert the identifier to upper camel case: `Dec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `non` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:151:9
[INFO] [stdout]     |
[INFO] [stdout] 151 |         non,
[INFO] [stdout]     |         ^^^ help: convert the identifier to upper camel case: `Non`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `add` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:143:9
[INFO] [stdout]     |
[INFO] [stdout] 143 |         add,
[INFO] [stdout]     |         ^^^ help: convert the identifier to upper camel case: `Add`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `mul` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |         mul,
[INFO] [stdout]     |         ^^^ help: convert the identifier to upper camel case: `Mul`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `div` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 |         div,
[INFO] [stdout]     |         ^^^ help: convert the identifier to upper camel case: `Div`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `sub` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |         sub,
[INFO] [stdout]     |         ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Sub`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `opbr` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |         opbr,
[INFO] [stdout]     |         ^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Opbr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `clbr` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:148:9
[INFO] [stdout]     |
[INFO] [stdout] 148 |         clbr,
[INFO] [stdout]     |         ^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Clbr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `dig` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:149:9
[INFO] [stdout]     |
[INFO] [stdout] 149 |         dig,
[INFO] [stdout]     |         ^^^ help: convert the identifier to upper camel case: `Dig`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `dec` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 150 |         dec,
[INFO] [stdout]     |         ^^^ help: convert the identifier to upper camel case: `Dec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `non` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:151:9
[INFO] [stdout]     |
[INFO] [stdout] 151 |         non,
[INFO] [stdout]     |         ^^^ help: convert the identifier to upper camel case: `Non`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> src/main.rs:39:14
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let (mut x, mut y) = (0.0, 0.0);
[INFO] [stdout]    |              ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 42 |                 x = some.calculate();
[INFO] [stdout]    |                 -------------------- `x` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]   --> src/main.rs:39:21
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let (mut x, mut y) = (0.0, 0.0);
[INFO] [stdout]    |                     ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 50 |                 y = some.calculate();
[INFO] [stdout]    |                 -------------------- `y` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> src/main.rs:39:14
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let (mut x, mut y) = (0.0, 0.0);
[INFO] [stdout]    |              ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 42 |                 x = some.calculate();
[INFO] [stdout]    |                 -------------------- `x` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]   --> src/main.rs:39:21
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let (mut x, mut y) = (0.0, 0.0);
[INFO] [stdout]    |                     ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 50 |                 y = some.calculate();
[INFO] [stdout]    |                 -------------------- `y` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |     let mut result = primitive;
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `prev_sym` is never read
[INFO] [stdout]    --> src/main.rs:154:10
[INFO] [stdout]     |
[INFO] [stdout] 154 |     let (mut prev_sym, mut curr_sym) = (non, non);
[INFO] [stdout]     |          ^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 184 |                 prev_sym = curr_sym;
[INFO] [stdout]     |                 ------------------- `prev_sym` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end` is never read
[INFO] [stdout]    --> src/main.rs:337:21
[INFO] [stdout]     |
[INFO] [stdout] 337 |     let (mut start, mut end) = (0, 0);
[INFO] [stdout]     |                     ^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] 338 |     for i in no_rh_oprnd_minus_pos {
[INFO] [stdout] 339 |         end = i;
[INFO] [stdout]     |         ------- `end` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:390:9
[INFO] [stdout]     |
[INFO] [stdout] 390 |     let mut byte_arr = exp.as_bytes();
[INFO] [stdout]     |         ----^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `denuded_exp` is never read
[INFO] [stdout]    --> src/main.rs:419:27
[INFO] [stdout]     |
[INFO] [stdout] 419 |     let mut denuded_exp = String::new();
[INFO] [stdout]     |                           ^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 423 |             denuded_exp = denuded_exp[1..(denuded_exp.len() - 1)].to_string();
[INFO] [stdout]     |             ----------- `denuded_exp` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `splitend` is never read
[INFO] [stdout]    --> src/main.rs:456:26
[INFO] [stdout]     |
[INFO] [stdout] 456 |     let (mut splitstart, mut splitend) = (0, 0);
[INFO] [stdout]     |                          ^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] 457 |     for i in loc {
[INFO] [stdout] 458 |         splitend = i;
[INFO] [stdout]     |         ------------ `splitend` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |     let mut result = primitive;
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `prev_sym` is never read
[INFO] [stdout]    --> src/main.rs:154:10
[INFO] [stdout]     |
[INFO] [stdout] 154 |     let (mut prev_sym, mut curr_sym) = (non, non);
[INFO] [stdout]     |          ^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 184 |                 prev_sym = curr_sym;
[INFO] [stdout]     |                 ------------------- `prev_sym` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end` is never read
[INFO] [stdout]    --> src/main.rs:337:21
[INFO] [stdout]     |
[INFO] [stdout] 337 |     let (mut start, mut end) = (0, 0);
[INFO] [stdout]     |                     ^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] 338 |     for i in no_rh_oprnd_minus_pos {
[INFO] [stdout] 339 |         end = i;
[INFO] [stdout]     |         ------- `end` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:486:9
[INFO] [stdout]     |
[INFO] [stdout] 486 |     let mut merge_start = wop - 1;
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:390:9
[INFO] [stdout]     |
[INFO] [stdout] 390 |     let mut byte_arr = exp.as_bytes();
[INFO] [stdout]     |         ----^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `denuded_exp` is never read
[INFO] [stdout]    --> src/main.rs:419:27
[INFO] [stdout]     |
[INFO] [stdout] 419 |     let mut denuded_exp = String::new();
[INFO] [stdout]     |                           ^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 423 |             denuded_exp = denuded_exp[1..(denuded_exp.len() - 1)].to_string();
[INFO] [stdout]     |             ----------- `denuded_exp` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `splitend` is never read
[INFO] [stdout]    --> src/main.rs:456:26
[INFO] [stdout]     |
[INFO] [stdout] 456 |     let (mut splitstart, mut splitend) = (0, 0);
[INFO] [stdout]     |                          ^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] 457 |     for i in loc {
[INFO] [stdout] 458 |         splitend = i;
[INFO] [stdout]     |         ------------ `splitend` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `oprnd1` is never read
[INFO] [stdout]    --> src/main.rs:529:10
[INFO] [stdout]     |
[INFO] [stdout] 529 |     let (mut oprnd1, mut oprnd2) = (
[INFO] [stdout]     |          ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 537 |         oprnd1 = Operand::Expression(Box::new(create_node_from_str(&assembled[0])));
[INFO] [stdout]     |         ------ `oprnd1` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `oprnd2` is never read
[INFO] [stdout]    --> src/main.rs:529:22
[INFO] [stdout]     |
[INFO] [stdout] 529 |     let (mut oprnd1, mut oprnd2) = (
[INFO] [stdout]     |                      ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 550 |         oprnd2 = Operand::Expression(Box::new(create_node_from_str(&assembled[2])));
[INFO] [stdout]     |         ------ `oprnd2` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:486:9
[INFO] [stdout]     |
[INFO] [stdout] 486 |     let mut merge_start = wop - 1;
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `oprnd1` is never read
[INFO] [stdout]    --> src/main.rs:529:10
[INFO] [stdout]     |
[INFO] [stdout] 529 |     let (mut oprnd1, mut oprnd2) = (
[INFO] [stdout]     |          ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 537 |         oprnd1 = Operand::Expression(Box::new(create_node_from_str(&assembled[0])));
[INFO] [stdout]     |         ------ `oprnd1` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `oprnd2` is never read
[INFO] [stdout]    --> src/main.rs:529:22
[INFO] [stdout]     |
[INFO] [stdout] 529 |     let (mut oprnd1, mut oprnd2) = (
[INFO] [stdout]     |                      ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 550 |         oprnd2 = Operand::Expression(Box::new(create_node_from_str(&assembled[2])));
[INFO] [stdout]     |         ------ `oprnd2` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:581:9
[INFO] [stdout]     |
[INFO] [stdout] 581 |         stdin().read_line(&mut x);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 581 |         let _ = stdin().read_line(&mut x);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:581:9
[INFO] [stdout]     |
[INFO] [stdout] 581 |         stdin().read_line(&mut x);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 581 |         let _ = stdin().read_line(&mut x);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "5fc1ce4e8d6a767dca246a949c04ebd1225dca176c3367926761c3bf378280a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fc1ce4e8d6a767dca246a949c04ebd1225dca176c3367926761c3bf378280a8", kill_on_drop: false }`
[INFO] [stdout] 5fc1ce4e8d6a767dca246a949c04ebd1225dca176c3367926761c3bf378280a8
