[INFO] cloning repository https://github.com/nilq/ketchup
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nilq/ketchup" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnilq%2Fketchup", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnilq%2Fketchup'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a7015cf97d074264852cf4941843d1bc058d2501
[INFO] checking nilq/ketchup against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnilq%2Fketchup" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nilq/ketchup on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nilq/ketchup
[INFO] finished tweaking git repo https://github.com/nilq/ketchup
[INFO] tweaked toml for git repo https://github.com/nilq/ketchup written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/nilq/ketchup already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "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] 3b3558ad81cfcdf64fdc4b16c08ae4dab219c1bdd0b84251b958adf61b59d45b
[INFO] running `Command { std: "docker" "start" "-a" "3b3558ad81cfcdf64fdc4b16c08ae4dab219c1bdd0b84251b958adf61b59d45b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b3558ad81cfcdf64fdc4b16c08ae4dab219c1bdd0b84251b958adf61b59d45b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b3558ad81cfcdf64fdc4b16c08ae4dab219c1bdd0b84251b958adf61b59d45b", kill_on_drop: false }`
[INFO] [stdout] 3b3558ad81cfcdf64fdc4b16c08ae4dab219c1bdd0b84251b958adf61b59d45b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0f379664df9f1d54c33e13576b2937d18be569d9bdc0dcaeed04a74b1ef601f
[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" "a0f379664df9f1d54c33e13576b2937d18be569d9bdc0dcaeed04a74b1ef601f", 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] [stderr]     Checking ketchup v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/language/syntax/lexer/tokenizer.rs:41:28
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn new(items: &mut Iterator<Item = char>) -> Tokenizer {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = char>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/language/syntax/lexer/tokenizer.rs:112:49
[INFO] [stdout]     |
[INFO] [stdout] 112 |     pub fn try_match_token(&mut self, matcher: &Matcher) -> Option<Token> {
[INFO] [stdout]     |                                                 ^^^^^^^ help: use `dyn`: `dyn Matcher`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/language/syntax/lexer/lexer.rs:116:23
[INFO] [stdout]     |
[INFO] [stdout] 116 |     matchers: Vec<Box<Matcher>>,
[INFO] [stdout]     |                       ^^^^^^^ help: use `dyn`: `dyn Matcher`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/language/syntax/lexer/lexer.rs:138:40
[INFO] [stdout]     |
[INFO] [stdout] 138 |     pub fn matchers(&self) -> &Vec<Box<Matcher>> {
[INFO] [stdout]     |                                        ^^^^^^^ help: use `dyn`: `dyn Matcher`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/language/syntax/lexer/lexer.rs:142:52
[INFO] [stdout]     |
[INFO] [stdout] 142 |     pub fn matchers_mut(&mut self) -> &mut Vec<Box<Matcher>> {
[INFO] [stdout]     |                                                    ^^^^^^^ help: use `dyn`: `dyn Matcher`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/language/vm/mod.rs:45:56
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 Op::Add      => binary_op!(self, a, b, try!(a.add(b))),
[INFO] [stdout]    |                                                        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/language/vm/mod.rs:46:56
[INFO] [stdout]    |
[INFO] [stdout] 46 |                 Op::Sub      => binary_op!(self, a, b, try!(a.sub(b))),
[INFO] [stdout]    |                                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/language/vm/mod.rs:47:56
[INFO] [stdout]    |
[INFO] [stdout] 47 |                 Op::Mul      => binary_op!(self, a, b, try!(a.mul(b))),
[INFO] [stdout]    |                                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/language/vm/mod.rs:48:56
[INFO] [stdout]    |
[INFO] [stdout] 48 |                 Op::Div      => binary_op!(self, a, b, try!(a.div(b))),
[INFO] [stdout]    |                                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/language/vm/mod.rs:108:43
[INFO] [stdout]     |
[INFO] [stdout] 108 | ...                   match try!(frame.run(scopes)) {
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Op`
[INFO] [stdout]   --> src/language/mod.rs:11:14
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use vm::{Op, Value, Object, Native};
[INFO] [stdout]    |              ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/language/syntax/lexer/tokenizer.rs:41:28
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn new(items: &mut Iterator<Item = char>) -> Tokenizer {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = char>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/language/syntax/lexer/tokenizer.rs:112:49
[INFO] [stdout]     |
[INFO] [stdout] 112 |     pub fn try_match_token(&mut self, matcher: &Matcher) -> Option<Token> {
[INFO] [stdout]     |                                                 ^^^^^^^ help: use `dyn`: `dyn Matcher`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/language/syntax/lexer/lexer.rs:116:23
[INFO] [stdout]     |
[INFO] [stdout] 116 |     matchers: Vec<Box<Matcher>>,
[INFO] [stdout]     |                       ^^^^^^^ help: use `dyn`: `dyn Matcher`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/language/syntax/lexer/lexer.rs:138:40
[INFO] [stdout]     |
[INFO] [stdout] 138 |     pub fn matchers(&self) -> &Vec<Box<Matcher>> {
[INFO] [stdout]     |                                        ^^^^^^^ help: use `dyn`: `dyn Matcher`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/language/syntax/lexer/lexer.rs:142:52
[INFO] [stdout]     |
[INFO] [stdout] 142 |     pub fn matchers_mut(&mut self) -> &mut Vec<Box<Matcher>> {
[INFO] [stdout]     |                                                    ^^^^^^^ help: use `dyn`: `dyn Matcher`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/language/vm/mod.rs:45:56
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 Op::Add      => binary_op!(self, a, b, try!(a.add(b))),
[INFO] [stdout]    |                                                        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/language/vm/mod.rs:46:56
[INFO] [stdout]    |
[INFO] [stdout] 46 |                 Op::Sub      => binary_op!(self, a, b, try!(a.sub(b))),
[INFO] [stdout]    |                                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/language/vm/mod.rs:47:56
[INFO] [stdout]    |
[INFO] [stdout] 47 |                 Op::Mul      => binary_op!(self, a, b, try!(a.mul(b))),
[INFO] [stdout]    |                                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/language/vm/mod.rs:48:56
[INFO] [stdout]    |
[INFO] [stdout] 48 |                 Op::Div      => binary_op!(self, a, b, try!(a.div(b))),
[INFO] [stdout]    |                                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/language/vm/mod.rs:108:43
[INFO] [stdout]     |
[INFO] [stdout] 108 | ...                   match try!(frame.run(scopes)) {
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Op`
[INFO] [stdout]   --> src/language/mod.rs:11:14
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use vm::{Op, Value, Object, Native};
[INFO] [stdout]    |              ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/language/mod.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         panic!(s.join(" "));
[INFO] [stdout]    |         -------------------- any code following this expression is unreachable
[INFO] [stdout] 49 | 
[INFO] [stdout] 50 |         Value::Nil
[INFO] [stdout]    |         ^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/language/mod.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         panic!(s.join(" "));
[INFO] [stdout]    |         -------------------- any code following this expression is unreachable
[INFO] [stdout] 49 | 
[INFO] [stdout] 50 |         Value::Nil
[INFO] [stdout]    |         ^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/language/mod.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |             _ => panic!("unimplemented expression!") ,
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/language/mod.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 _ => panic!("unstable/unimplemented statement!?")
[INFO] [stdout]     |                 ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/language/vm/mod.rs:63:17
[INFO] [stdout]    |
[INFO] [stdout] 63 |                 Op::Name(ref n) => {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/language/vm/mod.rs:129:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 _ => panic!("angery, not covered!?!"),
[INFO] [stdout]     |                 ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `body` is never read
[INFO] [stdout]    --> src/language/syntax/parser/mod.rs:186:29
[INFO] [stdout]     |
[INFO] [stdout] 186 |                     let mut body: Option<Vec<Statement>> = None;
[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: unused variable: `t`
[INFO] [stdout]    --> src/language/syntax/parser/mod.rs:215:25
[INFO] [stdout]     |
[INFO] [stdout] 215 |                         t => body = Some(vec!(Statement::Expression(Box::new(self.expression())))),
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let mut test = r#"
[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: unreachable pattern
[INFO] [stdout]    --> src/language/mod.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |             _ => panic!("unimplemented expression!") ,
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/language/mod.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 _ => panic!("unstable/unimplemented statement!?")
[INFO] [stdout]     |                 ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/language/vm/mod.rs:63:17
[INFO] [stdout]    |
[INFO] [stdout] 63 |                 Op::Name(ref n) => {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/language/vm/mod.rs:129:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 _ => panic!("angery, not covered!?!"),
[INFO] [stdout]     |                 ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `body` is never read
[INFO] [stdout]    --> src/language/syntax/parser/mod.rs:186:29
[INFO] [stdout]     |
[INFO] [stdout] 186 |                     let mut body: Option<Vec<Statement>> = None;
[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: unused variable: `t`
[INFO] [stdout]    --> src/language/syntax/parser/mod.rs:215:25
[INFO] [stdout]     |
[INFO] [stdout] 215 |                         t => body = Some(vec!(Statement::Expression(Box::new(self.expression())))),
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let mut test = r#"
[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: variant is never constructed: `Block`
[INFO] [stdout]  --> src/language/syntax/lexer/token.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     Block(Vec<Token>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Tokens`
[INFO] [stdout]  --> src/language/syntax/lexer/block_tree.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Tokens(Vec<Token>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `value`
[INFO] [stdout]   --> src/language/syntax/lexer/block_tree.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn value(&self) -> &ChunkValue {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lex_branch`
[INFO] [stdout]   --> src/language/syntax/lexer/lexer.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn lex_branch(branch: &Branch) -> Branch {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `flatten_branch`
[INFO] [stdout]   --> src/language/syntax/lexer/lexer.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 | pub fn flatten_branch(branch: &Branch) -> Vec<Token> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `process_branch`
[INFO] [stdout]    --> src/language/syntax/lexer/lexer.rs:110:8
[INFO] [stdout]     |
[INFO] [stdout] 110 | pub fn process_branch(branch: &Branch) -> Vec<Token> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Block`
[INFO] [stdout]   --> src/language/syntax/parser/ast.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Block(Box<Vec<Statement>>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Jump`
[INFO] [stdout]   --> src/language/vm/op.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     Jump(i32),
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test`
[INFO] [stdout]   --> src/main.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn test() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/language/mod.rs:48:16
[INFO] [stdout]    |
[INFO] [stdout] 48 |         panic!(s.join(" "));
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 48 |         panic!("{}", s.join(" "));
[INFO] [stdout]    |                +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:56:30
[INFO] [stdout]    |
[INFO] [stdout] 56 |             Err(e) => panic!(e),
[INFO] [stdout]    |                              ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 56 |             Err(e) => panic!("{}", e),
[INFO] [stdout]    |                              +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 56 |             Err(e) => std::panic::panic_any(e),
[INFO] [stdout]    |                       ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:53:17
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 vm.run(&mut scopes);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:92:5
[INFO] [stdout]    |
[INFO] [stdout] 92 |     vm.run(&mut scopes);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Block`
[INFO] [stdout]  --> src/language/syntax/lexer/token.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     Block(Vec<Token>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Tokens`
[INFO] [stdout]  --> src/language/syntax/lexer/block_tree.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Tokens(Vec<Token>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `value`
[INFO] [stdout]   --> src/language/syntax/lexer/block_tree.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn value(&self) -> &ChunkValue {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lex_branch`
[INFO] [stdout]   --> src/language/syntax/lexer/lexer.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn lex_branch(branch: &Branch) -> Branch {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `flatten_branch`
[INFO] [stdout]   --> src/language/syntax/lexer/lexer.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 | pub fn flatten_branch(branch: &Branch) -> Vec<Token> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `process_branch`
[INFO] [stdout]    --> src/language/syntax/lexer/lexer.rs:110:8
[INFO] [stdout]     |
[INFO] [stdout] 110 | pub fn process_branch(branch: &Branch) -> Vec<Token> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Block`
[INFO] [stdout]   --> src/language/syntax/parser/ast.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Block(Box<Vec<Statement>>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Jump`
[INFO] [stdout]   --> src/language/vm/op.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     Jump(i32),
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test`
[INFO] [stdout]   --> src/main.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn test() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/language/mod.rs:48:16
[INFO] [stdout]    |
[INFO] [stdout] 48 |         panic!(s.join(" "));
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 48 |         panic!("{}", s.join(" "));
[INFO] [stdout]    |                +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:56:30
[INFO] [stdout]    |
[INFO] [stdout] 56 |             Err(e) => panic!(e),
[INFO] [stdout]    |                              ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 56 |             Err(e) => panic!("{}", e),
[INFO] [stdout]    |                              +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 56 |             Err(e) => std::panic::panic_any(e),
[INFO] [stdout]    |                       ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:53:17
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 vm.run(&mut scopes);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:92:5
[INFO] [stdout]    |
[INFO] [stdout] 92 |     vm.run(&mut scopes);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.43s
[INFO] running `Command { std: "docker" "inspect" "a0f379664df9f1d54c33e13576b2937d18be569d9bdc0dcaeed04a74b1ef601f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0f379664df9f1d54c33e13576b2937d18be569d9bdc0dcaeed04a74b1ef601f", kill_on_drop: false }`
[INFO] [stdout] a0f379664df9f1d54c33e13576b2937d18be569d9bdc0dcaeed04a74b1ef601f