[INFO] cloning repository https://github.com/Snakeyes97/Brainfuck-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Snakeyes97/Brainfuck-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSnakeyes97%2FBrainfuck-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSnakeyes97%2FBrainfuck-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4c5c8e40245aaee3db0337ecc405dfd2840fefc7
[INFO] checking Snakeyes97/Brainfuck-rs against try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSnakeyes97%2FBrainfuck-rs" "/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/Snakeyes97/Brainfuck-rs on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Snakeyes97/Brainfuck-rs
[INFO] finished tweaking git repo https://github.com/Snakeyes97/Brainfuck-rs
[INFO] tweaked toml for git repo https://github.com/Snakeyes97/Brainfuck-rs written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/Snakeyes97/Brainfuck-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c60ac9b0a078b27aaaf0537b9aea12da5c2bc18ae7503cceb86e21e3b3db312f
[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" "c60ac9b0a078b27aaaf0537b9aea12da5c2bc18ae7503cceb86e21e3b3db312f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c60ac9b0a078b27aaaf0537b9aea12da5c2bc18ae7503cceb86e21e3b3db312f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c60ac9b0a078b27aaaf0537b9aea12da5c2bc18ae7503cceb86e21e3b3db312f", kill_on_drop: false }`
[INFO] [stdout] c60ac9b0a078b27aaaf0537b9aea12da5c2bc18ae7503cceb86e21e3b3db312f
[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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "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] fcf62ec3417764549d75a9dd72407b6bc82b810efe36f6f9069fd8c0c7cd7aac
[INFO] running `Command { std: "docker" "start" "-a" "fcf62ec3417764549d75a9dd72407b6bc82b810efe36f6f9069fd8c0c7cd7aac", kill_on_drop: false }`
[INFO] [stderr]     Checking brainfuck_interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `iter`, `str`
[INFO] [stdout]  --> src/interpreter.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{iter,str};
[INFO] [stdout]   |           ^^^^ ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `iter`, `str`
[INFO] [stdout]  --> src/interpreter.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{iter,str};
[INFO] [stdout]   |           ^^^^ ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Interpreter`
[INFO] [stdout]  --> src/interpreter.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Interpreter {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/interpreter.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn new() -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse`
[INFO] [stdout]   --> src/interpreter.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn parse(&mut self, source: String) -> Result<(),String> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `check_parenthesis`
[INFO] [stdout]  --> src/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn check_parenthesis(text : String) -> Result<(), usize> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Interpreter`
[INFO] [stdout]  --> src/interpreter.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Interpreter {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/interpreter.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn new() -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.36s
[INFO] [stdout] warning: associated function is never used: `parse`
[INFO] [stdout]   --> src/interpreter.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn parse(&mut self, source: String) -> Result<(),String> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `check_parenthesis`
[INFO] [stdout]  --> src/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn check_parenthesis(text : String) -> Result<(), usize> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fcf62ec3417764549d75a9dd72407b6bc82b810efe36f6f9069fd8c0c7cd7aac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcf62ec3417764549d75a9dd72407b6bc82b810efe36f6f9069fd8c0c7cd7aac", kill_on_drop: false }`
[INFO] [stdout] fcf62ec3417764549d75a9dd72407b6bc82b810efe36f6f9069fd8c0c7cd7aac