[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 master#82310651b93a594a3fd69015e1562186a080d94c for pr-145770
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthepointsupporter%2Fexp-eval" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/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-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/thepointsupporter/exp-eval on toolchain 82310651b93a594a3fd69015e1562186a080d94c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "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" "+82310651b93a594a3fd69015e1562186a080d94c" "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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e46227f846fb74b70ded90ef2027670b31d63a1e0f5005daf6531f124d6e8c09
[INFO] running `Command { std: "docker" "start" "-a" "e46227f846fb74b70ded90ef2027670b31d63a1e0f5005daf6531f124d6e8c09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e46227f846fb74b70ded90ef2027670b31d63a1e0f5005daf6531f124d6e8c09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e46227f846fb74b70ded90ef2027670b31d63a1e0f5005daf6531f124d6e8c09", kill_on_drop: false }`
[INFO] [stdout] e46227f846fb74b70ded90ef2027670b31d63a1e0f5005daf6531f124d6e8c09
[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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af87ab4f94c7f2ab28bb4747aa771757ba9b15bb069cd0c200b35e12b6106cfc
[INFO] running `Command { std: "docker" "start" "-a" "af87ab4f94c7f2ab28bb4747aa771757ba9b15bb069cd0c200b35e12b6106cfc", 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)]` 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 `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)]` on by default
[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 `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:39:18
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let (mut x, mut y) = (0.0, 0.0);
[INFO] [stdout]    |                  ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]   --> src/main.rs:39:25
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let (mut x, mut y) = (0.0, 0.0);
[INFO] [stdout]    |                         ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `prev_sym` is never read
[INFO] [stdout]    --> src/main.rs:154:14
[INFO] [stdout]     |
[INFO] [stdout] 154 |     let (mut prev_sym, mut curr_sym) = (non, non);
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end` is never read
[INFO] [stdout]    --> src/main.rs:337:25
[INFO] [stdout]     |
[INFO] [stdout] 337 |     let (mut start, mut end) = (0, 0);
[INFO] [stdout]     |                         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being 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)]` on by default
[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:419:13
[INFO] [stdout]     |
[INFO] [stdout] 419 |     let mut denuded_exp = String::new();
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `splitend` is never read
[INFO] [stdout]    --> src/main.rs:456:30
[INFO] [stdout]     |
[INFO] [stdout] 456 |     let (mut splitstart, mut splitend) = (0, 0);
[INFO] [stdout]     |                              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being 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 `x` is never read
[INFO] [stdout]   --> src/main.rs:39:18
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let (mut x, mut y) = (0.0, 0.0);
[INFO] [stdout]    |                  ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]    --> src/main.rs:507:13
[INFO] [stdout]     |
[INFO] [stdout] 507 |     let mut result = vec![];
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]   --> src/main.rs:39:25
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let (mut x, mut y) = (0.0, 0.0);
[INFO] [stdout]    |                         ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `oprnd1` is never read
[INFO] [stdout]    --> src/main.rs:529:14
[INFO] [stdout]     |
[INFO] [stdout] 529 |     let (mut oprnd1, mut oprnd2) = (
[INFO] [stdout]     |              ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `oprnd2` is never read
[INFO] [stdout]    --> src/main.rs:529:26
[INFO] [stdout]     |
[INFO] [stdout] 529 |     let (mut oprnd1, mut oprnd2) = (
[INFO] [stdout]     |                          ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `prev_sym` is never read
[INFO] [stdout]    --> src/main.rs:154:14
[INFO] [stdout]     |
[INFO] [stdout] 154 |     let (mut prev_sym, mut curr_sym) = (non, non);
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end` is never read
[INFO] [stdout]    --> src/main.rs:337:25
[INFO] [stdout]     |
[INFO] [stdout] 337 |     let (mut start, mut end) = (0, 0);
[INFO] [stdout]     |                         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being 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)]` 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: 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)]` on by default
[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:419:13
[INFO] [stdout]     |
[INFO] [stdout] 419 |     let mut denuded_exp = String::new();
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `splitend` is never read
[INFO] [stdout]    --> src/main.rs:456:30
[INFO] [stdout]     |
[INFO] [stdout] 456 |     let (mut splitstart, mut splitend) = (0, 0);
[INFO] [stdout]     |                              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being 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 `result` is never read
[INFO] [stdout]    --> src/main.rs:507:13
[INFO] [stdout]     |
[INFO] [stdout] 507 |     let mut result = vec![];
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `oprnd1` is never read
[INFO] [stdout]    --> src/main.rs:529:14
[INFO] [stdout]     |
[INFO] [stdout] 529 |     let (mut oprnd1, mut oprnd2) = (
[INFO] [stdout]     |              ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `oprnd2` is never read
[INFO] [stdout]    --> src/main.rs:529:26
[INFO] [stdout]     |
[INFO] [stdout] 529 |     let (mut oprnd1, mut oprnd2) = (
[INFO] [stdout]     |                          ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being 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)]` 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 0.41s
[INFO] running `Command { std: "docker" "inspect" "af87ab4f94c7f2ab28bb4747aa771757ba9b15bb069cd0c200b35e12b6106cfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af87ab4f94c7f2ab28bb4747aa771757ba9b15bb069cd0c200b35e12b6106cfc", kill_on_drop: false }`
[INFO] [stdout] af87ab4f94c7f2ab28bb4747aa771757ba9b15bb069cd0c200b35e12b6106cfc
