[INFO] cloning repository https://github.com/niccholaspage/rusty-lox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/niccholaspage/rusty-lox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fniccholaspage%2Frusty-lox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fniccholaspage%2Frusty-lox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 57e2b22c325d8931fbb84c5983ec16f2220e33b1
[INFO] checking niccholaspage/rusty-lox against try#1779a8680dcd39c56ed600627cf6742ef07ed78c for pr-149045
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fniccholaspage%2Frusty-lox" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/niccholaspage/rusty-lox
[INFO] finished tweaking git repo https://github.com/niccholaspage/rusty-lox
[INFO] tweaked toml for git repo https://github.com/niccholaspage/rusty-lox written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/niccholaspage/rusty-lox on toolchain 1779a8680dcd39c56ed600627cf6742ef07ed78c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1779a8680dcd39c56ed600627cf6742ef07ed78c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/niccholaspage/rusty-lox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1779a8680dcd39c56ed600627cf6742ef07ed78c" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1779a8680dcd39c56ed600627cf6742ef07ed78c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0249907d5f41ba163802449fc7136c8549c5b0cbb16d0fe2c07394a3dda37d6a
[INFO] running `Command { std: "docker" "start" "-a" "0249907d5f41ba163802449fc7136c8549c5b0cbb16d0fe2c07394a3dda37d6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0249907d5f41ba163802449fc7136c8549c5b0cbb16d0fe2c07394a3dda37d6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0249907d5f41ba163802449fc7136c8549c5b0cbb16d0fe2c07394a3dda37d6a", kill_on_drop: false }`
[INFO] [stdout] 0249907d5f41ba163802449fc7136c8549c5b0cbb16d0fe2c07394a3dda37d6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1779a8680dcd39c56ed600627cf6742ef07ed78c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ed617573cbc042029c8d4ef1662acfba7b01af0214ba5f265e3c7660188f7f0f
[INFO] running `Command { std: "docker" "start" "-a" "ed617573cbc042029c8d4ef1662acfba7b01af0214ba5f265e3c7660188f7f0f", kill_on_drop: false }`
[INFO] [stderr]     Checking typed-arena v2.0.1
[INFO] [stderr]     Checking rusty-lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Visitor` is never used
[INFO] [stdout]  --> src/expr.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Visitor<R> {
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Visitor` is never used
[INFO] [stdout]  --> src/stmt.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Visitor<R> {
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/parser.rs:20:25
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn new(context: &RefCell<Context>, tokens: Vec<Token>) -> Parser {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^                         ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn new(context: &RefCell<Context>, tokens: Vec<Token>) -> Parser<'_> {
[INFO] [stdout]    |                                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/parser.rs:28:74
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn parse(&'a mut self, arena: &'a Arena<Expr<'a>>) -> Option<Vec<Stmt>> {
[INFO] [stdout]    |                   --                   --            --                  ^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                   |                    |             |
[INFO] [stdout]    |                   |                    |             the lifetime is named here
[INFO] [stdout]    |                   |                    the lifetime is named here
[INFO] [stdout]    |                   the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn parse(&'a mut self, arena: &'a Arena<Expr<'a>>) -> Option<Vec<Stmt<'a>>> {
[INFO] [stdout]    |                                                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/parser.rs:42:19
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn expression(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr, ParseError> {
[INFO] [stdout]    |                   ^^^^^ the lifetime is elided here                ^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn expression(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr<'_>, ParseError> {
[INFO] [stdout]    |                                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/parser.rs:46:73
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn declaration(&'a self, arena: &'a Arena<Expr<'a>>) -> Option<Stmt<'_>> {
[INFO] [stdout]    |                     --               --            --                   ^^ the same lifetime is elided here
[INFO] [stdout]    |                     |                |             |
[INFO] [stdout]    |                     |                |             the lifetime is named here
[INFO] [stdout]    |                     |                the lifetime is named here
[INFO] [stdout]    |                     the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 46 -     fn declaration(&'a self, arena: &'a Arena<Expr<'a>>) -> Option<Stmt<'_>> {
[INFO] [stdout] 46 +     fn declaration(&'a self, arena: &'a Arena<Expr<'a>>) -> Option<Stmt<'a>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/parser.rs:66:71
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn statement(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'_>, ParseError> {
[INFO] [stdout]    |                   --               --            --                   ^^ the same lifetime is elided here
[INFO] [stdout]    |                   |                |             |
[INFO] [stdout]    |                   |                |             the lifetime is named here
[INFO] [stdout]    |                   |                the lifetime is named here
[INFO] [stdout]    |                   the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 66 -     fn statement(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'_>, ParseError> {
[INFO] [stdout] 66 +     fn statement(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'a>, ParseError> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/parser.rs:78:77
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn print_statement(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'_>, ParseError> {
[INFO] [stdout]    |                         --               --            --                   ^^ the same lifetime is elided here
[INFO] [stdout]    |                         |                |             |
[INFO] [stdout]    |                         |                |             the lifetime is named here
[INFO] [stdout]    |                         |                the lifetime is named here
[INFO] [stdout]    |                         the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 78 -     fn print_statement(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'_>, ParseError> {
[INFO] [stdout] 78 +     fn print_statement(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'a>, ParseError> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/parser.rs:86:77
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn var_declaration(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'_>, ParseError> {
[INFO] [stdout]    |                         --               --            --                   ^^ the same lifetime is elided here
[INFO] [stdout]    |                         |                |             |
[INFO] [stdout]    |                         |                |             the lifetime is named here
[INFO] [stdout]    |                         |                the lifetime is named here
[INFO] [stdout]    |                         the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 86 -     fn var_declaration(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'_>, ParseError> {
[INFO] [stdout] 86 +     fn var_declaration(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'a>, ParseError> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/parser.rs:99:82
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn expression_statement(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'_>, ParseError> {
[INFO] [stdout]    |                              --               --            --                   ^^ the same lifetime is elided here
[INFO] [stdout]    |                              |                |             |
[INFO] [stdout]    |                              |                |             the lifetime is named here
[INFO] [stdout]    |                              |                the lifetime is named here
[INFO] [stdout]    |                              the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 99 -     fn expression_statement(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'_>, ParseError> {
[INFO] [stdout] 99 +     fn expression_statement(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'a>, ParseError> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:107:71
[INFO] [stdout]     |
[INFO] [stdout] 107 |     fn block(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Vec<Stmt<'_>>, ParseError> {
[INFO] [stdout]     |               --               --            --                       ^^ the same lifetime is elided here
[INFO] [stdout]     |               |                |             |
[INFO] [stdout]     |               |                |             the lifetime is named here
[INFO] [stdout]     |               |                the lifetime is named here
[INFO] [stdout]     |               the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 107 -     fn block(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Vec<Stmt<'_>>, ParseError> {
[INFO] [stdout] 107 +     fn block(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Vec<Stmt<'a>>, ParseError> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:120:19
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn assignment(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr, ParseError> {
[INFO] [stdout]     |                   ^^^^^ the lifetime is elided here                ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn assignment(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr<'_>, ParseError> {
[INFO] [stdout]     |                                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:137:17
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn equality(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr, ParseError> {
[INFO] [stdout]     |                 ^^^^^ the lifetime is elided here                ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn equality(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr<'_>, ParseError> {
[INFO] [stdout]     |                                                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:153:19
[INFO] [stdout]     |
[INFO] [stdout] 153 |     fn comparison(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr, ParseError> {
[INFO] [stdout]     |                   ^^^^^ the lifetime is elided here                ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 153 |     fn comparison(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr<'_>, ParseError> {
[INFO] [stdout]     |                                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:174:13
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn term(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr, ParseError> {
[INFO] [stdout]     |             ^^^^^ the lifetime is elided here                ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn term(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr<'_>, ParseError> {
[INFO] [stdout]     |                                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:190:15
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn factor(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr, ParseError> {
[INFO] [stdout]     |               ^^^^^ the lifetime is elided here                ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn factor(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr<'_>, ParseError> {
[INFO] [stdout]     |                                                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:206:14
[INFO] [stdout]     |
[INFO] [stdout] 206 |     fn unary(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr, ParseError> {
[INFO] [stdout]     |              ^^^^^ the lifetime is elided here                ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 206 |     fn unary(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr<'_>, ParseError> {
[INFO] [stdout]     |                                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:219:16
[INFO] [stdout]     |
[INFO] [stdout] 219 |     fn primary(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr, ParseError> {
[INFO] [stdout]     |                ^^^^^ the lifetime is elided here                ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 219 |     fn primary(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr<'_>, ParseError> {
[INFO] [stdout]     |                                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Visitor` is never used
[INFO] [stdout]  --> src/expr.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Visitor<R> {
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Visitor` is never used
[INFO] [stdout]  --> src/stmt.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Visitor<R> {
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/parser.rs:20:25
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn new(context: &RefCell<Context>, tokens: Vec<Token>) -> Parser {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^                         ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn new(context: &RefCell<Context>, tokens: Vec<Token>) -> Parser<'_> {
[INFO] [stdout]    |                                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/parser.rs:28:74
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn parse(&'a mut self, arena: &'a Arena<Expr<'a>>) -> Option<Vec<Stmt>> {
[INFO] [stdout]    |                   --                   --            --                  ^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                   |                    |             |
[INFO] [stdout]    |                   |                    |             the lifetime is named here
[INFO] [stdout]    |                   |                    the lifetime is named here
[INFO] [stdout]    |                   the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn parse(&'a mut self, arena: &'a Arena<Expr<'a>>) -> Option<Vec<Stmt<'a>>> {
[INFO] [stdout]    |                                                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/parser.rs:42:19
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn expression(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr, ParseError> {
[INFO] [stdout]    |                   ^^^^^ the lifetime is elided here                ^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn expression(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr<'_>, ParseError> {
[INFO] [stdout]    |                                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/parser.rs:46:73
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn declaration(&'a self, arena: &'a Arena<Expr<'a>>) -> Option<Stmt<'_>> {
[INFO] [stdout]    |                     --               --            --                   ^^ the same lifetime is elided here
[INFO] [stdout]    |                     |                |             |
[INFO] [stdout]    |                     |                |             the lifetime is named here
[INFO] [stdout]    |                     |                the lifetime is named here
[INFO] [stdout]    |                     the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 46 -     fn declaration(&'a self, arena: &'a Arena<Expr<'a>>) -> Option<Stmt<'_>> {
[INFO] [stdout] 46 +     fn declaration(&'a self, arena: &'a Arena<Expr<'a>>) -> Option<Stmt<'a>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/parser.rs:66:71
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn statement(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'_>, ParseError> {
[INFO] [stdout]    |                   --               --            --                   ^^ the same lifetime is elided here
[INFO] [stdout]    |                   |                |             |
[INFO] [stdout]    |                   |                |             the lifetime is named here
[INFO] [stdout]    |                   |                the lifetime is named here
[INFO] [stdout]    |                   the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 66 -     fn statement(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'_>, ParseError> {
[INFO] [stdout] 66 +     fn statement(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'a>, ParseError> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/parser.rs:78:77
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn print_statement(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'_>, ParseError> {
[INFO] [stdout]    |                         --               --            --                   ^^ the same lifetime is elided here
[INFO] [stdout]    |                         |                |             |
[INFO] [stdout]    |                         |                |             the lifetime is named here
[INFO] [stdout]    |                         |                the lifetime is named here
[INFO] [stdout]    |                         the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 78 -     fn print_statement(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'_>, ParseError> {
[INFO] [stdout] 78 +     fn print_statement(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'a>, ParseError> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/parser.rs:86:77
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn var_declaration(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'_>, ParseError> {
[INFO] [stdout]    |                         --               --            --                   ^^ the same lifetime is elided here
[INFO] [stdout]    |                         |                |             |
[INFO] [stdout]    |                         |                |             the lifetime is named here
[INFO] [stdout]    |                         |                the lifetime is named here
[INFO] [stdout]    |                         the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 86 -     fn var_declaration(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'_>, ParseError> {
[INFO] [stdout] 86 +     fn var_declaration(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'a>, ParseError> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/parser.rs:99:82
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn expression_statement(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'_>, ParseError> {
[INFO] [stdout]    |                              --               --            --                   ^^ the same lifetime is elided here
[INFO] [stdout]    |                              |                |             |
[INFO] [stdout]    |                              |                |             the lifetime is named here
[INFO] [stdout]    |                              |                the lifetime is named here
[INFO] [stdout]    |                              the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 99 -     fn expression_statement(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'_>, ParseError> {
[INFO] [stdout] 99 +     fn expression_statement(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Stmt<'a>, ParseError> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:107:71
[INFO] [stdout]     |
[INFO] [stdout] 107 |     fn block(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Vec<Stmt<'_>>, ParseError> {
[INFO] [stdout]     |               --               --            --                       ^^ the same lifetime is elided here
[INFO] [stdout]     |               |                |             |
[INFO] [stdout]     |               |                |             the lifetime is named here
[INFO] [stdout]     |               |                the lifetime is named here
[INFO] [stdout]     |               the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 107 -     fn block(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Vec<Stmt<'_>>, ParseError> {
[INFO] [stdout] 107 +     fn block(&'a self, arena: &'a Arena<Expr<'a>>) -> Result<Vec<Stmt<'a>>, ParseError> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:120:19
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn assignment(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr, ParseError> {
[INFO] [stdout]     |                   ^^^^^ the lifetime is elided here                ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn assignment(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr<'_>, ParseError> {
[INFO] [stdout]     |                                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:137:17
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn equality(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr, ParseError> {
[INFO] [stdout]     |                 ^^^^^ the lifetime is elided here                ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn equality(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr<'_>, ParseError> {
[INFO] [stdout]     |                                                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:153:19
[INFO] [stdout]     |
[INFO] [stdout] 153 |     fn comparison(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr, ParseError> {
[INFO] [stdout]     |                   ^^^^^ the lifetime is elided here                ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 153 |     fn comparison(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr<'_>, ParseError> {
[INFO] [stdout]     |                                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:174:13
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn term(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr, ParseError> {
[INFO] [stdout]     |             ^^^^^ the lifetime is elided here                ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn term(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr<'_>, ParseError> {
[INFO] [stdout]     |                                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:190:15
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn factor(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr, ParseError> {
[INFO] [stdout]     |               ^^^^^ the lifetime is elided here                ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn factor(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr<'_>, ParseError> {
[INFO] [stdout]     |                                                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:206:14
[INFO] [stdout]     |
[INFO] [stdout] 206 |     fn unary(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr, ParseError> {
[INFO] [stdout]     |              ^^^^^ the lifetime is elided here                ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 206 |     fn unary(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr<'_>, ParseError> {
[INFO] [stdout]     |                                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:219:16
[INFO] [stdout]     |
[INFO] [stdout] 219 |     fn primary(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr, ParseError> {
[INFO] [stdout]     |                ^^^^^ the lifetime is elided here                ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 219 |     fn primary(&self, arena: &'a Arena<Expr<'a>>) -> Result<&'a Expr<'_>, ParseError> {
[INFO] [stdout]     |                                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "ed617573cbc042029c8d4ef1662acfba7b01af0214ba5f265e3c7660188f7f0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed617573cbc042029c8d4ef1662acfba7b01af0214ba5f265e3c7660188f7f0f", kill_on_drop: false }`
[INFO] [stdout] ed617573cbc042029c8d4ef1662acfba7b01af0214ba5f265e3c7660188f7f0f
