[INFO] updating cached repository https://github.com/DCubix/ToyLang
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9ca21919f17f4f26b897118cf59ea7ece3479061
[INFO] testing DCubix/ToyLang against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDCubix%2FToyLang" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DCubix/ToyLang on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/DCubix/ToyLang
[INFO] finished tweaking git repo https://github.com/DCubix/ToyLang
[INFO] tweaked toml for git repo https://github.com/DCubix/ToyLang written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/DCubix/ToyLang already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stdout] 7193b1f4a3d3ffcd47ca1855072a7da2d80f8533f79cfe8b1f9ed2710bc982a5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "7193b1f4a3d3ffcd47ca1855072a7da2d80f8533f79cfe8b1f9ed2710bc982a5"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]    Compiling lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer.rs:73:8
[INFO] [stderr]    |
[INFO] [stderr] 73 |                 '0'...'9' | '.' => {
[INFO] [stderr]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer.rs:77:11
[INFO] [stderr]    |
[INFO] [stderr] 77 |                             'a'...'f' | 'A'...'F' => false,
[INFO] [stderr]    |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer.rs:77:23
[INFO] [stderr]    |
[INFO] [stderr] 77 |                             'a'...'f' | 'A'...'F' => false,
[INFO] [stderr]    |                                            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer.rs:96:8
[INFO] [stderr]    |
[INFO] [stderr] 96 |                 'a'...'z' | 'A'...'Z' | '_' => {
[INFO] [stderr]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer.rs:96:20
[INFO] [stderr]    |
[INFO] [stderr] 96 |                 'a'...'z' | 'A'...'Z' | '_' => {
[INFO] [stderr]    |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::scanner::Scanner`
[INFO] [stderr]  --> src/interp.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::scanner::Scanner;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `prev` is assigned to, but never used
[INFO] [stderr]   --> src/lexer.rs:66:7
[INFO] [stderr]    |
[INFO] [stderr] 66 |         let mut prev = '\0';
[INFO] [stderr]    |             ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_prev` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `prev` is never read
[INFO] [stderr]    --> src/lexer.rs:157:4
[INFO] [stderr]     |
[INFO] [stderr] 157 |             prev = c;
[INFO] [stderr]     |             ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `next`
[INFO] [stderr]   --> src/scanner.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn next(&self) -> char {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `prev`
[INFO] [stderr]   --> src/scanner.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn prev(&self) -> char {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `eat_until_any`
[INFO] [stderr]   --> src/scanner.rs:74:9
[INFO] [stderr]    |
[INFO] [stderr] 74 |     pub fn eat_until_any(&mut self, value: Vec<char>) -> String {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Boolean`
[INFO] [stderr]   --> src/interp.rs:17:2
[INFO] [stderr]    |
[INFO] [stderr] 17 |     Boolean(bool),
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `step_back`
[INFO] [stderr]   --> src/interp.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn step_back(&mut self) {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `arg_list`
[INFO] [stderr]    --> src/interp.rs:385:5
[INFO] [stderr]     |
[INFO] [stderr] 385 |     fn arg_list(&mut self) -> Result<Vec<Box<Node>>, String> {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `KEYWORDS` should have a snake case name
[INFO] [stderr]   --> src/lexer.rs:48:7
[INFO] [stderr]    |
[INFO] [stderr] 48 |         let KEYWORDS: HashMap<&str, BuiltinKeyword> = hashmap!{
[INFO] [stderr]    |             ^^^^^^^^ help: convert the identifier to snake case: `keywords`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.65s
[INFO] running `"docker" "inspect" "7193b1f4a3d3ffcd47ca1855072a7da2d80f8533f79cfe8b1f9ed2710bc982a5"`
[INFO] running `"docker" "rm" "-f" "7193b1f4a3d3ffcd47ca1855072a7da2d80f8533f79cfe8b1f9ed2710bc982a5"`
[INFO] [stdout] 7193b1f4a3d3ffcd47ca1855072a7da2d80f8533f79cfe8b1f9ed2710bc982a5
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fc394ea8f7c94ad40960d34ebeafc86a67ce04fa85e1a603ae4957ce79c521f9
[INFO] running `"docker" "start" "-a" "fc394ea8f7c94ad40960d34ebeafc86a67ce04fa85e1a603ae4957ce79c521f9"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer.rs:73:8
[INFO] [stderr]    |
[INFO] [stderr] 73 |                 '0'...'9' | '.' => {
[INFO] [stderr]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer.rs:77:11
[INFO] [stderr]    |
[INFO] [stderr] 77 |                             'a'...'f' | 'A'...'F' => false,
[INFO] [stderr]    |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer.rs:77:23
[INFO] [stderr]    |
[INFO] [stderr] 77 |                             'a'...'f' | 'A'...'F' => false,
[INFO] [stderr]    |                                            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer.rs:96:8
[INFO] [stderr]    |
[INFO] [stderr] 96 |                 'a'...'z' | 'A'...'Z' | '_' => {
[INFO] [stderr]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer.rs:96:20
[INFO] [stderr]    |
[INFO] [stderr] 96 |                 'a'...'z' | 'A'...'Z' | '_' => {
[INFO] [stderr]    |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::scanner::Scanner`
[INFO] [stderr]  --> src/interp.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::scanner::Scanner;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `prev` is assigned to, but never used
[INFO] [stderr]   --> src/lexer.rs:66:7
[INFO] [stderr]    |
[INFO] [stderr] 66 |         let mut prev = '\0';
[INFO] [stderr]    |             ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_prev` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `prev` is never read
[INFO] [stderr]    --> src/lexer.rs:157:4
[INFO] [stderr]     |
[INFO] [stderr] 157 |             prev = c;
[INFO] [stderr]     |             ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `next`
[INFO] [stderr]   --> src/scanner.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn next(&self) -> char {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `prev`
[INFO] [stderr]   --> src/scanner.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn prev(&self) -> char {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `eat_until_any`
[INFO] [stderr]   --> src/scanner.rs:74:9
[INFO] [stderr]    |
[INFO] [stderr] 74 |     pub fn eat_until_any(&mut self, value: Vec<char>) -> String {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Boolean`
[INFO] [stderr]   --> src/interp.rs:17:2
[INFO] [stderr]    |
[INFO] [stderr] 17 |     Boolean(bool),
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `step_back`
[INFO] [stderr]   --> src/interp.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn step_back(&mut self) {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `arg_list`
[INFO] [stderr]    --> src/interp.rs:385:5
[INFO] [stderr]     |
[INFO] [stderr] 385 |     fn arg_list(&mut self) -> Result<Vec<Box<Node>>, String> {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `KEYWORDS` should have a snake case name
[INFO] [stderr]   --> src/lexer.rs:48:7
[INFO] [stderr]    |
[INFO] [stderr] 48 |         let KEYWORDS: HashMap<&str, BuiltinKeyword> = hashmap!{
[INFO] [stderr]    |             ^^^^^^^^ help: convert the identifier to snake case: `keywords`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `"docker" "inspect" "fc394ea8f7c94ad40960d34ebeafc86a67ce04fa85e1a603ae4957ce79c521f9"`
[INFO] running `"docker" "rm" "-f" "fc394ea8f7c94ad40960d34ebeafc86a67ce04fa85e1a603ae4957ce79c521f9"`
[INFO] [stdout] fc394ea8f7c94ad40960d34ebeafc86a67ce04fa85e1a603ae4957ce79c521f9
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f87be3897424390c9a479ea2f0b637031fd1e47d29ce5542c2a80d47a8e6b609
[INFO] running `"docker" "start" "-a" "f87be3897424390c9a479ea2f0b637031fd1e47d29ce5542c2a80d47a8e6b609"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer.rs:73:8
[INFO] [stderr]    |
[INFO] [stderr] 73 |                 '0'...'9' | '.' => {
[INFO] [stderr]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer.rs:77:11
[INFO] [stderr]    |
[INFO] [stderr] 77 |                             'a'...'f' | 'A'...'F' => false,
[INFO] [stderr]    |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer.rs:77:23
[INFO] [stderr]    |
[INFO] [stderr] 77 |                             'a'...'f' | 'A'...'F' => false,
[INFO] [stderr]    |                                            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer.rs:96:8
[INFO] [stderr]    |
[INFO] [stderr] 96 |                 'a'...'z' | 'A'...'Z' | '_' => {
[INFO] [stderr]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer.rs:96:20
[INFO] [stderr]    |
[INFO] [stderr] 96 |                 'a'...'z' | 'A'...'Z' | '_' => {
[INFO] [stderr]    |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::scanner::Scanner`
[INFO] [stderr]  --> src/interp.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::scanner::Scanner;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `prev` is assigned to, but never used
[INFO] [stderr]   --> src/lexer.rs:66:7
[INFO] [stderr]    |
[INFO] [stderr] 66 |         let mut prev = '\0';
[INFO] [stderr]    |             ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_prev` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `prev` is never read
[INFO] [stderr]    --> src/lexer.rs:157:4
[INFO] [stderr]     |
[INFO] [stderr] 157 |             prev = c;
[INFO] [stderr]     |             ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `next`
[INFO] [stderr]   --> src/scanner.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn next(&self) -> char {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `prev`
[INFO] [stderr]   --> src/scanner.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn prev(&self) -> char {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `eat_until_any`
[INFO] [stderr]   --> src/scanner.rs:74:9
[INFO] [stderr]    |
[INFO] [stderr] 74 |     pub fn eat_until_any(&mut self, value: Vec<char>) -> String {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Boolean`
[INFO] [stderr]   --> src/interp.rs:17:2
[INFO] [stderr]    |
[INFO] [stderr] 17 |     Boolean(bool),
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `step_back`
[INFO] [stderr]   --> src/interp.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn step_back(&mut self) {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `arg_list`
[INFO] [stderr]    --> src/interp.rs:385:5
[INFO] [stderr]     |
[INFO] [stderr] 385 |     fn arg_list(&mut self) -> Result<Vec<Box<Node>>, String> {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `KEYWORDS` should have a snake case name
[INFO] [stderr]   --> src/lexer.rs:48:7
[INFO] [stderr]    |
[INFO] [stderr] 48 |         let KEYWORDS: HashMap<&str, BuiltinKeyword> = hashmap!{
[INFO] [stderr]    |             ^^^^^^^^ help: convert the identifier to snake case: `keywords`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lang-fc088c4ea5d6f48b
[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 `"docker" "inspect" "f87be3897424390c9a479ea2f0b637031fd1e47d29ce5542c2a80d47a8e6b609"`
[INFO] running `"docker" "rm" "-f" "f87be3897424390c9a479ea2f0b637031fd1e47d29ce5542c2a80d47a8e6b609"`
[INFO] [stdout] f87be3897424390c9a479ea2f0b637031fd1e47d29ce5542c2a80d47a8e6b609