[INFO] cloning repository https://github.com/Bech1337/programming_language
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Bech1337/programming_language" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBech1337%2Fprogramming_language", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBech1337%2Fprogramming_language'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8458b6fc013917f4d80517f7526f63f7865f89f4
[INFO] checking Bech1337/programming_language against try#c8bdaa84ec1b37f18f30375e196a65b7602f3790 for pr-73345
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBech1337%2Fprogramming_language" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Bech1337/programming_language on toolchain c8bdaa84ec1b37f18f30375e196a65b7602f3790
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Bech1337/programming_language
[INFO] finished tweaking git repo https://github.com/Bech1337/programming_language
[INFO] tweaked toml for git repo https://github.com/Bech1337/programming_language written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Bech1337/programming_language already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "metadata" "--no-deps" "--format-version=1", 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] 08910fa4aaa9ccbb07a0a2b672cbdcbf909ca72f330e711809c57c1998ced967
[INFO] running `Command { std: "docker" "start" "-a" "08910fa4aaa9ccbb07a0a2b672cbdcbf909ca72f330e711809c57c1998ced967", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "08910fa4aaa9ccbb07a0a2b672cbdcbf909ca72f330e711809c57c1998ced967", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08910fa4aaa9ccbb07a0a2b672cbdcbf909ca72f330e711809c57c1998ced967", kill_on_drop: false }`
[INFO] [stdout] 08910fa4aaa9ccbb07a0a2b672cbdcbf909ca72f330e711809c57c1998ced967
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e583de6a184c1a5241d9ade58d7f147118925f3008541267e7ed1838972eb0d
[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" "0e583de6a184c1a5241d9ade58d7f147118925f3008541267e7ed1838972eb0d", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `test_string`
[INFO] [stdout]  --> src/lexer/is.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let mut test_string = char::to_string(&chars[index]);
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_string`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keywords`
[INFO] [stdout]  --> src/lexer/is.rs:2:56
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn is_keyword(mut index: usize, chars: &Vec<char>, keywords: &Vec<&str>) -> bool {
[INFO] [stdout]   |                                                        ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keywords`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/lexer/is.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let mut test_string = char::to_string(&chars[index]);
[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: unused variable: `test_string`
[INFO] [stdout]  --> src/lexer/is.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let mut test_string = char::to_string(&chars[index]);
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_string`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keywords`
[INFO] [stdout]  --> src/lexer/is.rs:2:56
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn is_keyword(mut index: usize, chars: &Vec<char>, keywords: &Vec<&str>) -> bool {
[INFO] [stdout]   |                                                        ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keywords`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/lexer/is.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let mut test_string = char::to_string(&chars[index]);
[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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.66s
[INFO] running `Command { std: "docker" "inspect" "0e583de6a184c1a5241d9ade58d7f147118925f3008541267e7ed1838972eb0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e583de6a184c1a5241d9ade58d7f147118925f3008541267e7ed1838972eb0d", kill_on_drop: false }`
[INFO] [stdout] 0e583de6a184c1a5241d9ade58d7f147118925f3008541267e7ed1838972eb0d