[INFO] updating cached repository https://github.com/totoroyyb/Infix2Postfix-Rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d865c158fbd727dd0d217a9070678216f7aa7d1f
[INFO] checking totoroyyb/Infix2Postfix-Rust against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftotoroyyb%2FInfix2Postfix-Rust" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/totoroyyb/Infix2Postfix-Rust on toolchain c9edc02e8320a9e5799d185910ece7d491f524e6-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/totoroyyb/Infix2Postfix-Rust
[INFO] finished tweaking git repo https://github.com/totoroyyb/Infix2Postfix-Rust
[INFO] tweaked toml for git repo https://github.com/totoroyyb/Infix2Postfix-Rust written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/totoroyyb/Infix2Postfix-Rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 822b99dc88d060225fef3fc33bcad1664b362dc8ff5b0fa831fcb9a23bf81eb0
[INFO] running `"docker" "start" "-a" "822b99dc88d060225fef3fc33bcad1664b362dc8ff5b0fa831fcb9a23bf81eb0"`
[INFO] [stderr]     Checking your v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: denote infinite loops with `loop { ... }`
[INFO] [stderr]   --> src/lib.rs:91:17
[INFO] [stderr]    |
[INFO] [stderr] 91 |                 while true {
[INFO] [stderr]    |                 ^^^^^^^^^^ help: use `loop`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(while_true)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: denote infinite loops with `loop { ... }`
[INFO] [stderr]    --> src/lib.rs:108:21
[INFO] [stderr]     |
[INFO] [stderr] 108 |                     while true {
[INFO] [stderr]     |                     ^^^^^^^^^^ help: use `loop`
[INFO] [stderr] 
[INFO] [stderr] warning: denote infinite loops with `loop { ... }`
[INFO] [stderr]   --> src/lib.rs:91:17
[INFO] [stderr]    |
[INFO] [stderr] 91 |                 while true {
[INFO] [stderr]    |                 ^^^^^^^^^^ help: use `loop`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(while_true)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: denote infinite loops with `loop { ... }`
[INFO] [stderr]    --> src/lib.rs:108:21
[INFO] [stderr]     |
[INFO] [stderr] 108 |                     while true {
[INFO] [stderr]     |                     ^^^^^^^^^^ help: use `loop`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/lib.rs:138:13
[INFO] [stderr]     |
[INFO] [stderr] 138 |         for x in 0..stack.len() {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]  --> src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn main() {
[INFO] [stderr]   | ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/lib.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     handle.read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: variable `eachEle` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:170:13
[INFO] [stderr]     |
[INFO] [stderr] 170 |         for eachEle in tokens {
[INFO] [stderr]     |             ^^^^^^^ help: convert the identifier to snake case: `each_ele`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `eachEle` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:222:13
[INFO] [stderr]     |
[INFO] [stderr] 222 |         for eachEle in tokens {
[INFO] [stderr]     |             ^^^^^^^ help: convert the identifier to snake case: `each_ele`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/lib.rs:138:13
[INFO] [stderr]     |
[INFO] [stderr] 138 |         for x in 0..stack.len() {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/lib.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     handle.read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: variable `eachEle` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:170:13
[INFO] [stderr]     |
[INFO] [stderr] 170 |         for eachEle in tokens {
[INFO] [stderr]     |             ^^^^^^^ help: convert the identifier to snake case: `each_ele`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `eachEle` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:222:13
[INFO] [stderr]     |
[INFO] [stderr] 222 |         for eachEle in tokens {
[INFO] [stderr]     |             ^^^^^^^ help: convert the identifier to snake case: `each_ele`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `"docker" "inspect" "822b99dc88d060225fef3fc33bcad1664b362dc8ff5b0fa831fcb9a23bf81eb0"`
[INFO] running `"docker" "rm" "-f" "822b99dc88d060225fef3fc33bcad1664b362dc8ff5b0fa831fcb9a23bf81eb0"`
[INFO] [stdout] 822b99dc88d060225fef3fc33bcad1664b362dc8ff5b0fa831fcb9a23bf81eb0