[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] testing Bech1337/programming_language against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBech1337%2Fprogramming_language" "/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/Bech1337/programming_language on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "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-1/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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "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" "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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b8471520242d953615d288e114e91b00afe3a7dc5dbfd40d1d4c6104f6b33339
[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" "b8471520242d953615d288e114e91b00afe3a7dc5dbfd40d1d4c6104f6b33339", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8471520242d953615d288e114e91b00afe3a7dc5dbfd40d1d4c6104f6b33339", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8471520242d953615d288e114e91b00afe3a7dc5dbfd40d1d4c6104f6b33339", kill_on_drop: false }`
[INFO] [stdout] b8471520242d953615d288e114e91b00afe3a7dc5dbfd40d1d4c6104f6b33339
[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" "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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--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] ab10ae3496f4a7d6238071b9085cb6c09f8a3c8a8c7cf066043d8a17724107ff
[INFO] running `Command { std: "docker" "start" "-a" "ab10ae3496f4a7d6238071b9085cb6c09f8a3c8a8c7cf066043d8a17724107ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling regex v1.3.7
[INFO] [stderr]    Compiling 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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.14s
[INFO] running `Command { std: "docker" "inspect" "ab10ae3496f4a7d6238071b9085cb6c09f8a3c8a8c7cf066043d8a17724107ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab10ae3496f4a7d6238071b9085cb6c09f8a3c8a8c7cf066043d8a17724107ff", kill_on_drop: false }`
[INFO] [stdout] ab10ae3496f4a7d6238071b9085cb6c09f8a3c8a8c7cf066043d8a17724107ff
[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" "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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--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] bf3ee10f6b9ff21009d59124ba58f66a840d5c1bd7a447d5a0c61b5ced6d4b54
[INFO] running `Command { std: "docker" "start" "-a" "bf3ee10f6b9ff21009d59124ba58f66a840d5c1bd7a447d5a0c61b5ced6d4b54", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "bf3ee10f6b9ff21009d59124ba58f66a840d5c1bd7a447d5a0c61b5ced6d4b54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf3ee10f6b9ff21009d59124ba58f66a840d5c1bd7a447d5a0c61b5ced6d4b54", kill_on_drop: false }`
[INFO] [stdout] bf3ee10f6b9ff21009d59124ba58f66a840d5c1bd7a447d5a0c61b5ced6d4b54
[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" "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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", 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] fe4da00c0eef659dd849861244a22d3751ccedbd704fee38a283d22f9a6415a6
[INFO] running `Command { std: "docker" "start" "-a" "fe4da00c0eef659dd849861244a22d3751ccedbd704fee38a283d22f9a6415a6", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `test_string`
[INFO] [stderr]  --> src/lexer/is.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 |     let mut test_string = char::to_string(&chars[index]);
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_string`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `keywords`
[INFO] [stderr]  --> src/lexer/is.rs:2:56
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub fn is_keyword(mut index: usize, chars: &Vec<char>, keywords: &Vec<&str>) -> bool {
[INFO] [stderr]   |                                                        ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keywords`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/lexer/is.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 |     let mut test_string = char::to_string(&chars[index]);
[INFO] [stderr]   |         ----^^^^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/compiler-23b9f1d83b88e5bd
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fe4da00c0eef659dd849861244a22d3751ccedbd704fee38a283d22f9a6415a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe4da00c0eef659dd849861244a22d3751ccedbd704fee38a283d22f9a6415a6", kill_on_drop: false }`
[INFO] [stdout] fe4da00c0eef659dd849861244a22d3751ccedbd704fee38a283d22f9a6415a6