[INFO] cloning repository https://github.com/DCubix/ToyLang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DCubix/ToyLang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDCubix%2FToyLang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDCubix%2FToyLang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9ca21919f17f4f26b897118cf59ea7ece3479061
[INFO] testing DCubix/ToyLang against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDCubix%2FToyLang" "/workspace/builds/worker-102/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-102/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DCubix/ToyLang on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-102/source/Cargo.toml
[INFO] crate git repo https://github.com/DCubix/ToyLang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb9512842d28c344d6594c022409dc6de0d32489b58bc8c5ba816c691c3df398
[INFO] running `Command { std: "docker" "start" "-a" "fb9512842d28c344d6594c022409dc6de0d32489b58bc8c5ba816c691c3df398", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb9512842d28c344d6594c022409dc6de0d32489b58bc8c5ba816c691c3df398", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb9512842d28c344d6594c022409dc6de0d32489b58bc8c5ba816c691c3df398", kill_on_drop: false }`
[INFO] [stdout] fb9512842d28c344d6594c022409dc6de0d32489b58bc8c5ba816c691c3df398
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8da7f729ab4265dc800ceb791609637d88d54bbf773ad75831f896d43a577a32
[INFO] running `Command { std: "docker" "start" "-a" "8da7f729ab4265dc800ceb791609637d88d54bbf773ad75831f896d43a577a32", kill_on_drop: false }`
[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] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 '0'...'9' | '.' => {
[INFO] [stdout]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer.rs:77:11
[INFO] [stdout]    |
[INFO] [stdout] 77 | ...                   'a'...'f' | 'A'...'F' => false,
[INFO] [stdout]    |                          ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer.rs:77:23
[INFO] [stdout]    |
[INFO] [stdout] 77 | ...                   'a'...'f' | 'A'...'F' => false,
[INFO] [stdout]    |                                      ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 96 |                 'a'...'z' | 'A'...'Z' | '_' => {
[INFO] [stdout]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer.rs:96:20
[INFO] [stdout]    |
[INFO] [stdout] 96 |                 'a'...'z' | 'A'...'Z' | '_' => {
[INFO] [stdout]    |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::scanner::Scanner`
[INFO] [stdout]  --> src/interp.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::scanner::Scanner;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `prev` is assigned to, but never used
[INFO] [stdout]   --> src/lexer.rs:66:11
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let mut prev = '\0';
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = note: consider using `_prev` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `prev` is never read
[INFO] [stdout]    --> src/lexer.rs:157:4
[INFO] [stdout]     |
[INFO] [stdout] 157 |             prev = c;
[INFO] [stdout]     |             ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]   --> src/scanner.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn next(&self) -> char {
[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: `prev`
[INFO] [stdout]   --> src/scanner.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn prev(&self) -> char {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `eat_until_any`
[INFO] [stdout]   --> src/scanner.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |     pub fn eat_until_any(&mut self, value: Vec<char>) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Boolean`
[INFO] [stdout]   --> src/interp.rs:17:2
[INFO] [stdout]    |
[INFO] [stdout] 17 |     Boolean(bool),
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/interp.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `step_back`
[INFO] [stdout]   --> src/interp.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn step_back(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `arg_list`
[INFO] [stdout]    --> src/interp.rs:385:5
[INFO] [stdout]     |
[INFO] [stdout] 385 |     fn arg_list(&mut self) -> Result<Vec<Box<Node>>, String> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `KEYWORDS` should have a snake case name
[INFO] [stdout]   --> src/lexer.rs:48:7
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let KEYWORDS: HashMap<&str, BuiltinKeyword> = hashmap!{
[INFO] [stdout]    |             ^^^^^^^^ help: convert the identifier to snake case: `keywords`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.02s
[INFO] running `Command { std: "docker" "inspect" "8da7f729ab4265dc800ceb791609637d88d54bbf773ad75831f896d43a577a32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8da7f729ab4265dc800ceb791609637d88d54bbf773ad75831f896d43a577a32", kill_on_drop: false }`
[INFO] [stdout] 8da7f729ab4265dc800ceb791609637d88d54bbf773ad75831f896d43a577a32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36158af5410ec71a2b8d4257d1e9cadd05aa923c58df85873db1f21990cbaf2b
[INFO] running `Command { std: "docker" "start" "-a" "36158af5410ec71a2b8d4257d1e9cadd05aa923c58df85873db1f21990cbaf2b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 '0'...'9' | '.' => {
[INFO] [stdout]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer.rs:77:11
[INFO] [stdout]    |
[INFO] [stdout] 77 | ...                   'a'...'f' | 'A'...'F' => false,
[INFO] [stdout]    |                          ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer.rs:77:23
[INFO] [stdout]    |
[INFO] [stdout] 77 | ...                   'a'...'f' | 'A'...'F' => false,
[INFO] [stdout]    |                                      ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 96 |                 'a'...'z' | 'A'...'Z' | '_' => {
[INFO] [stdout]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer.rs:96:20
[INFO] [stdout]    |
[INFO] [stdout] 96 |                 'a'...'z' | 'A'...'Z' | '_' => {
[INFO] [stdout]    |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::scanner::Scanner`
[INFO] [stdout]  --> src/interp.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::scanner::Scanner;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `prev` is assigned to, but never used
[INFO] [stdout]   --> src/lexer.rs:66:11
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let mut prev = '\0';
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = note: consider using `_prev` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `prev` is never read
[INFO] [stdout]    --> src/lexer.rs:157:4
[INFO] [stdout]     |
[INFO] [stdout] 157 |             prev = c;
[INFO] [stdout]     |             ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]   --> src/scanner.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn next(&self) -> char {
[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: `prev`
[INFO] [stdout]   --> src/scanner.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn prev(&self) -> char {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `eat_until_any`
[INFO] [stdout]   --> src/scanner.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |     pub fn eat_until_any(&mut self, value: Vec<char>) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Boolean`
[INFO] [stdout]   --> src/interp.rs:17:2
[INFO] [stdout]    |
[INFO] [stdout] 17 |     Boolean(bool),
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/interp.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `step_back`
[INFO] [stdout]   --> src/interp.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn step_back(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `arg_list`
[INFO] [stdout]    --> src/interp.rs:385:5
[INFO] [stdout]     |
[INFO] [stdout] 385 |     fn arg_list(&mut self) -> Result<Vec<Box<Node>>, String> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `KEYWORDS` should have a snake case name
[INFO] [stdout]   --> src/lexer.rs:48:7
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let KEYWORDS: HashMap<&str, BuiltinKeyword> = hashmap!{
[INFO] [stdout]    |             ^^^^^^^^ help: convert the identifier to snake case: `keywords`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "36158af5410ec71a2b8d4257d1e9cadd05aa923c58df85873db1f21990cbaf2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36158af5410ec71a2b8d4257d1e9cadd05aa923c58df85873db1f21990cbaf2b", kill_on_drop: false }`
[INFO] [stdout] 36158af5410ec71a2b8d4257d1e9cadd05aa923c58df85873db1f21990cbaf2b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3dbf2820669e009bcb5b1f332e0cf8b01ce218a765272a0fe6c209b593a3e6be
[INFO] running `Command { std: "docker" "start" "-a" "3dbf2820669e009bcb5b1f332e0cf8b01ce218a765272a0fe6c209b593a3e6be", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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:66:11
[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] note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/interp.rs:14:10
[INFO] [stderr]    |
[INFO] [stderr] 14 | #[derive(Debug)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[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: `lang` (bin "lang" test) generated 15 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/lang-dc0924e58966f319)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3dbf2820669e009bcb5b1f332e0cf8b01ce218a765272a0fe6c209b593a3e6be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dbf2820669e009bcb5b1f332e0cf8b01ce218a765272a0fe6c209b593a3e6be", kill_on_drop: false }`
[INFO] [stdout] 3dbf2820669e009bcb5b1f332e0cf8b01ce218a765272a0fe6c209b593a3e6be