[INFO] updating cached repository https://github.com/jameshiew/crust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f14616799c78c518489ed4ba5c6b65db64ed3ac
[INFO] testing jameshiew/crust against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjameshiew%2Fcrust" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jameshiew/crust 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/jameshiew/crust
[INFO] finished tweaking git repo https://github.com/jameshiew/crust
[INFO] tweaked toml for git repo https://github.com/jameshiew/crust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/jameshiew/crust 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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d45e73de2c56bfe4f7ac6e314d79dc4ddc1594a6fce8dc7c7cde697b03a78ff
[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" "8d45e73de2c56bfe4f7ac6e314d79dc4ddc1594a6fce8dc7c7cde697b03a78ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d45e73de2c56bfe4f7ac6e314d79dc4ddc1594a6fce8dc7c7cde697b03a78ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d45e73de2c56bfe4f7ac6e314d79dc4ddc1594a6fce8dc7c7cde697b03a78ff", kill_on_drop: false }`
[INFO] [stdout] 8d45e73de2c56bfe4f7ac6e314d79dc4ddc1594a6fce8dc7c7cde697b03a78ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2a22a98f44a09489ef584f434af14ecdf29d3d964cc2356171687695871bbd23
[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" "2a22a98f44a09489ef584f434af14ecdf29d3d964cc2356171687695871bbd23", kill_on_drop: false }`
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling libc v0.2.34
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.4.1
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling regex v0.2.3
[INFO] [stderr]    Compiling crust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]   --> src/lexer.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 | /         lazy_static! {
[INFO] [stdout] 42 | |             static ref INT_KEYWORD: Regex = Regex::new(r"^int$").unwrap();
[INFO] [stdout] 43 | |             static ref RETURN_KEYWORD: Regex = Regex::new(r"^return$").unwrap();
[INFO] [stdout] 44 | |             static ref IDENTIFIER: Regex = Regex::new(r"^[a-zA-Z]\w*$").unwrap();
[INFO] [stdout] 45 | |             static ref INTEGER_LITERAL: Regex = Regex::new(r"^[0-9]+$").unwrap();
[INFO] [stdout] 46 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]   --> src/lexer.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 | /         lazy_static! {
[INFO] [stdout] 42 | |             static ref INT_KEYWORD: Regex = Regex::new(r"^int$").unwrap();
[INFO] [stdout] 43 | |             static ref RETURN_KEYWORD: Regex = Regex::new(r"^return$").unwrap();
[INFO] [stdout] 44 | |             static ref IDENTIFIER: Regex = Regex::new(r"^[a-zA-Z]\w*$").unwrap();
[INFO] [stdout] 45 | |             static ref INTEGER_LITERAL: Regex = Regex::new(r"^[0-9]+$").unwrap();
[INFO] [stdout] 46 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]   --> src/lexer.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 | /         lazy_static! {
[INFO] [stdout] 42 | |             static ref INT_KEYWORD: Regex = Regex::new(r"^int$").unwrap();
[INFO] [stdout] 43 | |             static ref RETURN_KEYWORD: Regex = Regex::new(r"^return$").unwrap();
[INFO] [stdout] 44 | |             static ref IDENTIFIER: Regex = Regex::new(r"^[a-zA-Z]\w*$").unwrap();
[INFO] [stdout] 45 | |             static ref INTEGER_LITERAL: Regex = Regex::new(r"^[0-9]+$").unwrap();
[INFO] [stdout] 46 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]   --> src/lexer.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 | /         lazy_static! {
[INFO] [stdout] 42 | |             static ref INT_KEYWORD: Regex = Regex::new(r"^int$").unwrap();
[INFO] [stdout] 43 | |             static ref RETURN_KEYWORD: Regex = Regex::new(r"^return$").unwrap();
[INFO] [stdout] 44 | |             static ref IDENTIFIER: Regex = Regex::new(r"^[a-zA-Z]\w*$").unwrap();
[INFO] [stdout] 45 | |             static ref INTEGER_LITERAL: Regex = Regex::new(r"^[0-9]+$").unwrap();
[INFO] [stdout] 46 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.77s
[INFO] running `Command { std: "docker" "inspect" "2a22a98f44a09489ef584f434af14ecdf29d3d964cc2356171687695871bbd23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a22a98f44a09489ef584f434af14ecdf29d3d964cc2356171687695871bbd23", kill_on_drop: false }`
[INFO] [stdout] 2a22a98f44a09489ef584f434af14ecdf29d3d964cc2356171687695871bbd23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18308824d2f0f23c5541b4d2a2f4a39d567b59c183c9bcbd9f3bbc73703e3a03
[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" "18308824d2f0f23c5541b4d2a2f4a39d567b59c183c9bcbd9f3bbc73703e3a03", kill_on_drop: false }`
[INFO] [stderr]    Compiling crust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]   --> src/lexer.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 | /         lazy_static! {
[INFO] [stdout] 42 | |             static ref INT_KEYWORD: Regex = Regex::new(r"^int$").unwrap();
[INFO] [stdout] 43 | |             static ref RETURN_KEYWORD: Regex = Regex::new(r"^return$").unwrap();
[INFO] [stdout] 44 | |             static ref IDENTIFIER: Regex = Regex::new(r"^[a-zA-Z]\w*$").unwrap();
[INFO] [stdout] 45 | |             static ref INTEGER_LITERAL: Regex = Regex::new(r"^[0-9]+$").unwrap();
[INFO] [stdout] 46 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]   --> src/lexer.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 | /         lazy_static! {
[INFO] [stdout] 42 | |             static ref INT_KEYWORD: Regex = Regex::new(r"^int$").unwrap();
[INFO] [stdout] 43 | |             static ref RETURN_KEYWORD: Regex = Regex::new(r"^return$").unwrap();
[INFO] [stdout] 44 | |             static ref IDENTIFIER: Regex = Regex::new(r"^[a-zA-Z]\w*$").unwrap();
[INFO] [stdout] 45 | |             static ref INTEGER_LITERAL: Regex = Regex::new(r"^[0-9]+$").unwrap();
[INFO] [stdout] 46 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]   --> src/lexer.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 | /         lazy_static! {
[INFO] [stdout] 42 | |             static ref INT_KEYWORD: Regex = Regex::new(r"^int$").unwrap();
[INFO] [stdout] 43 | |             static ref RETURN_KEYWORD: Regex = Regex::new(r"^return$").unwrap();
[INFO] [stdout] 44 | |             static ref IDENTIFIER: Regex = Regex::new(r"^[a-zA-Z]\w*$").unwrap();
[INFO] [stdout] 45 | |             static ref INTEGER_LITERAL: Regex = Regex::new(r"^[0-9]+$").unwrap();
[INFO] [stdout] 46 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]   --> src/lexer.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 | /         lazy_static! {
[INFO] [stdout] 42 | |             static ref INT_KEYWORD: Regex = Regex::new(r"^int$").unwrap();
[INFO] [stdout] 43 | |             static ref RETURN_KEYWORD: Regex = Regex::new(r"^return$").unwrap();
[INFO] [stdout] 44 | |             static ref IDENTIFIER: Regex = Regex::new(r"^[a-zA-Z]\w*$").unwrap();
[INFO] [stdout] 45 | |             static ref INTEGER_LITERAL: Regex = Regex::new(r"^[0-9]+$").unwrap();
[INFO] [stdout] 46 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "18308824d2f0f23c5541b4d2a2f4a39d567b59c183c9bcbd9f3bbc73703e3a03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18308824d2f0f23c5541b4d2a2f4a39d567b59c183c9bcbd9f3bbc73703e3a03", kill_on_drop: false }`
[INFO] [stdout] 18308824d2f0f23c5541b4d2a2f4a39d567b59c183c9bcbd9f3bbc73703e3a03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] efb293a71d6314129f5bb69dbf0aa941a5b6b29f77797e838778e635af8af377
[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" "efb293a71d6314129f5bb69dbf0aa941a5b6b29f77797e838778e635af8af377", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/lexer.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 | /         lazy_static! {
[INFO] [stderr] 42 | |             static ref INT_KEYWORD: Regex = Regex::new(r"^int$").unwrap();
[INFO] [stderr] 43 | |             static ref RETURN_KEYWORD: Regex = Regex::new(r"^return$").unwrap();
[INFO] [stderr] 44 | |             static ref IDENTIFIER: Regex = Regex::new(r"^[a-zA-Z]\w*$").unwrap();
[INFO] [stderr] 45 | |             static ref INTEGER_LITERAL: Regex = Regex::new(r"^[0-9]+$").unwrap();
[INFO] [stderr] 46 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/lexer.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 | /         lazy_static! {
[INFO] [stderr] 42 | |             static ref INT_KEYWORD: Regex = Regex::new(r"^int$").unwrap();
[INFO] [stderr] 43 | |             static ref RETURN_KEYWORD: Regex = Regex::new(r"^return$").unwrap();
[INFO] [stderr] 44 | |             static ref IDENTIFIER: Regex = Regex::new(r"^[a-zA-Z]\w*$").unwrap();
[INFO] [stderr] 45 | |             static ref INTEGER_LITERAL: Regex = Regex::new(r"^[0-9]+$").unwrap();
[INFO] [stderr] 46 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/lexer.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 | /         lazy_static! {
[INFO] [stderr] 42 | |             static ref INT_KEYWORD: Regex = Regex::new(r"^int$").unwrap();
[INFO] [stderr] 43 | |             static ref RETURN_KEYWORD: Regex = Regex::new(r"^return$").unwrap();
[INFO] [stderr] 44 | |             static ref IDENTIFIER: Regex = Regex::new(r"^[a-zA-Z]\w*$").unwrap();
[INFO] [stderr] 45 | |             static ref INTEGER_LITERAL: Regex = Regex::new(r"^[0-9]+$").unwrap();
[INFO] [stderr] 46 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/lexer.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 | /         lazy_static! {
[INFO] [stderr] 42 | |             static ref INT_KEYWORD: Regex = Regex::new(r"^int$").unwrap();
[INFO] [stderr] 43 | |             static ref RETURN_KEYWORD: Regex = Regex::new(r"^return$").unwrap();
[INFO] [stderr] 44 | |             static ref IDENTIFIER: Regex = Regex::new(r"^[a-zA-Z]\w*$").unwrap();
[INFO] [stderr] 45 | |             static ref INTEGER_LITERAL: Regex = Regex::new(r"^[0-9]+$").unwrap();
[INFO] [stderr] 46 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/crust-1d22c563749bef47
[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" "efb293a71d6314129f5bb69dbf0aa941a5b6b29f77797e838778e635af8af377", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efb293a71d6314129f5bb69dbf0aa941a5b6b29f77797e838778e635af8af377", kill_on_drop: false }`
[INFO] [stdout] efb293a71d6314129f5bb69dbf0aa941a5b6b29f77797e838778e635af8af377