[INFO] cloning repository https://github.com/totoroyyb/Infix2Postfix-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/totoroyyb/Infix2Postfix-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftotoroyyb%2FInfix2Postfix-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftotoroyyb%2FInfix2Postfix-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d865c158fbd727dd0d217a9070678216f7aa7d1f
[INFO] checking totoroyyb/Infix2Postfix-Rust against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftotoroyyb%2FInfix2Postfix-Rust" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/totoroyyb/Infix2Postfix-Rust on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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 /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/totoroyyb/Infix2Postfix-Rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9af1656e81da729266ce21ad22216614c969869a5d1e062cfaf2ee4f2f999ac2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9af1656e81da729266ce21ad22216614c969869a5d1e062cfaf2ee4f2f999ac2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9af1656e81da729266ce21ad22216614c969869a5d1e062cfaf2ee4f2f999ac2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9af1656e81da729266ce21ad22216614c969869a5d1e062cfaf2ee4f2f999ac2", kill_on_drop: false }`
[INFO] [stdout] 9af1656e81da729266ce21ad22216614c969869a5d1e062cfaf2ee4f2f999ac2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2399351207ed59447905ff6ada962532abdcc8eb9a357b00f4c57cd96ad6bfab
[INFO] running `Command { std: "docker" "start" "-a" "2399351207ed59447905ff6ada962532abdcc8eb9a357b00f4c57cd96ad6bfab", kill_on_drop: false }`
[INFO] [stderr]     Checking your v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]   --> src/lib.rs:91:17
[INFO] [stdout]    |
[INFO] [stdout] 91 |                 while true {
[INFO] [stdout]    |                 ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]    --> src/lib.rs:108:21
[INFO] [stdout]     |
[INFO] [stdout] 108 |                     while true {
[INFO] [stdout]     |                     ^^^^^^^^^^ help: use `loop`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]   --> src/lib.rs:91:17
[INFO] [stdout]    |
[INFO] [stdout] 91 |                 while true {
[INFO] [stdout]    |                 ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]    --> src/lib.rs:108:21
[INFO] [stdout]     |
[INFO] [stdout] 108 |                     while true {
[INFO] [stdout]     |                     ^^^^^^^^^^ help: use `loop`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:138:13
[INFO] [stdout]     |
[INFO] [stdout] 138 |         for x in 0..stack.len() {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:138:13
[INFO] [stdout]     |
[INFO] [stdout] 138 |         for x in 0..stack.len() {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]  --> src/lib.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     handle.read_to_string(&mut buffer);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `eachEle` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:170:13
[INFO] [stdout]     |
[INFO] [stdout] 170 |         for eachEle in tokens {
[INFO] [stdout]     |             ^^^^^^^ help: convert the identifier to snake case: `each_ele`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `eachEle` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:222:13
[INFO] [stdout]     |
[INFO] [stdout] 222 |         for eachEle in tokens {
[INFO] [stdout]     |             ^^^^^^^ help: convert the identifier to snake case: `each_ele`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     handle.read_to_string(&mut buffer);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `eachEle` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:170:13
[INFO] [stdout]     |
[INFO] [stdout] 170 |         for eachEle in tokens {
[INFO] [stdout]     |             ^^^^^^^ help: convert the identifier to snake case: `each_ele`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `eachEle` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:222:13
[INFO] [stdout]     |
[INFO] [stdout] 222 |         for eachEle in tokens {
[INFO] [stdout]     |             ^^^^^^^ help: convert the identifier to snake case: `each_ele`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `Command { std: "docker" "inspect" "2399351207ed59447905ff6ada962532abdcc8eb9a357b00f4c57cd96ad6bfab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2399351207ed59447905ff6ada962532abdcc8eb9a357b00f4c57cd96ad6bfab", kill_on_drop: false }`
[INFO] [stdout] 2399351207ed59447905ff6ada962532abdcc8eb9a357b00f4c57cd96ad6bfab