[INFO] cloning repository https://github.com/mzumi/writing-an-interpreter-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mzumi/writing-an-interpreter-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmzumi%2Fwriting-an-interpreter-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmzumi%2Fwriting-an-interpreter-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b5d30edd90e7dfb45d75ed744c330db355fa562
[INFO] testing mzumi/writing-an-interpreter-in-rust against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmzumi%2Fwriting-an-interpreter-in-rust" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mzumi/writing-an-interpreter-in-rust on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mzumi/writing-an-interpreter-in-rust
[INFO] finished tweaking git repo https://github.com/mzumi/writing-an-interpreter-in-rust
[INFO] tweaked toml for git repo https://github.com/mzumi/writing-an-interpreter-in-rust written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/mzumi/writing-an-interpreter-in-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "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] 4e388de8682c13d28bf489c7f0ee13565c88d6563710045aad41489db580a5f8
[INFO] running `Command { std: "docker" "start" "-a" "4e388de8682c13d28bf489c7f0ee13565c88d6563710045aad41489db580a5f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e388de8682c13d28bf489c7f0ee13565c88d6563710045aad41489db580a5f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e388de8682c13d28bf489c7f0ee13565c88d6563710045aad41489db580a5f8", kill_on_drop: false }`
[INFO] [stdout] 4e388de8682c13d28bf489c7f0ee13565c88d6563710045aad41489db580a5f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76a1ddbd394919281e285afd1ad7b130998b678a6b1a73b48b6c6167d49d10c4
[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" "76a1ddbd394919281e285afd1ad7b130998b678a6b1a73b48b6c6167d49d10c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling writing-an-interpreter-in-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/ast.rs:16:29
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub statements: Vec<Box<Statement>>,
[INFO] [stdout]    |                             ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/ast.rs:20:36
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn new(statements: Vec<Box<Statement>>) -> Self {
[INFO] [stdout]    |                                    ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/ast/let_statement.rs:7:27
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub value: Option<Box<Expression>>,
[INFO] [stdout]   |                           ^^^^^^^^^^ help: use `dyn`: `dyn Expression`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/let_statement.rs:11:66
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(token: Token, name: Identifier, value: Option<Box<Expression>>) -> Self {
[INFO] [stdout]    |                                                                  ^^^^^^^^^^ help: use `dyn`: `dyn Expression`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/ast/return_statement.rs:6:34
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub return_value: Option<Box<Expression>>,
[INFO] [stdout]   |                                  ^^^^^^^^^^ help: use `dyn`: `dyn Expression`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/ast/expression_statement.rs:6:32
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub expression: Option<Box<Expression>>,
[INFO] [stdout]   |                                ^^^^^^^^^^ help: use `dyn`: `dyn Expression`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/parser.rs:32:33
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let statements: Vec<Box<Statement>> = vec![];
[INFO] [stdout]    |                                 ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/parser.rs:49:49
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn parse_statement(&mut self) -> Result<Box<Statement>, ParseError> {
[INFO] [stdout]    |                                                 ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/parser.rs:53:35
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 let s: Result<Box<Statement>, _> = Ok(Box::new(let_statement));
[INFO] [stdout]    |                                   ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/parser.rs:58:35
[INFO] [stdout]    |
[INFO] [stdout] 58 |                 let s: Result<Box<Statement>, _> = Ok(Box::new(return_statement));
[INFO] [stdout]    |                                   ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "76a1ddbd394919281e285afd1ad7b130998b678a6b1a73b48b6c6167d49d10c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76a1ddbd394919281e285afd1ad7b130998b678a6b1a73b48b6c6167d49d10c4", kill_on_drop: false }`
[INFO] [stdout] 76a1ddbd394919281e285afd1ad7b130998b678a6b1a73b48b6c6167d49d10c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d877e9db18f5c00421ac335796f1d602e286204164b7c612b289c0b504892a8
[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" "2d877e9db18f5c00421ac335796f1d602e286204164b7c612b289c0b504892a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling writing-an-interpreter-in-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/ast.rs:16:29
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub statements: Vec<Box<Statement>>,
[INFO] [stdout]    |                             ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/ast.rs:20:36
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn new(statements: Vec<Box<Statement>>) -> Self {
[INFO] [stdout]    |                                    ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/ast/let_statement.rs:7:27
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub value: Option<Box<Expression>>,
[INFO] [stdout]   |                           ^^^^^^^^^^ help: use `dyn`: `dyn Expression`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/let_statement.rs:11:66
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(token: Token, name: Identifier, value: Option<Box<Expression>>) -> Self {
[INFO] [stdout]    |                                                                  ^^^^^^^^^^ help: use `dyn`: `dyn Expression`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/ast/return_statement.rs:6:34
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub return_value: Option<Box<Expression>>,
[INFO] [stdout]   |                                  ^^^^^^^^^^ help: use `dyn`: `dyn Expression`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/ast/expression_statement.rs:6:32
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub expression: Option<Box<Expression>>,
[INFO] [stdout]   |                                ^^^^^^^^^^ help: use `dyn`: `dyn Expression`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/parser.rs:32:33
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let statements: Vec<Box<Statement>> = vec![];
[INFO] [stdout]    |                                 ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/parser.rs:49:49
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn parse_statement(&mut self) -> Result<Box<Statement>, ParseError> {
[INFO] [stdout]    |                                                 ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/parser.rs:53:35
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 let s: Result<Box<Statement>, _> = Ok(Box::new(let_statement));
[INFO] [stdout]    |                                   ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/parser.rs:58:35
[INFO] [stdout]    |
[INFO] [stdout] 58 |                 let s: Result<Box<Statement>, _> = Ok(Box::new(return_statement));
[INFO] [stdout]    |                                   ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/ast.rs:16:29
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub statements: Vec<Box<Statement>>,
[INFO] [stdout]    |                             ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/ast.rs:20:36
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn new(statements: Vec<Box<Statement>>) -> Self {
[INFO] [stdout]    |                                    ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/ast/let_statement.rs:7:27
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub value: Option<Box<Expression>>,
[INFO] [stdout]   |                           ^^^^^^^^^^ help: use `dyn`: `dyn Expression`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/let_statement.rs:11:66
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(token: Token, name: Identifier, value: Option<Box<Expression>>) -> Self {
[INFO] [stdout]    |                                                                  ^^^^^^^^^^ help: use `dyn`: `dyn Expression`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/ast/return_statement.rs:6:34
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub return_value: Option<Box<Expression>>,
[INFO] [stdout]   |                                  ^^^^^^^^^^ help: use `dyn`: `dyn Expression`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/ast/expression_statement.rs:6:32
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub expression: Option<Box<Expression>>,
[INFO] [stdout]   |                                ^^^^^^^^^^ help: use `dyn`: `dyn Expression`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/parser.rs:32:33
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let statements: Vec<Box<Statement>> = vec![];
[INFO] [stdout]    |                                 ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/parser.rs:49:49
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn parse_statement(&mut self) -> Result<Box<Statement>, ParseError> {
[INFO] [stdout]    |                                                 ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/parser.rs:53:35
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 let s: Result<Box<Statement>, _> = Ok(Box::new(let_statement));
[INFO] [stdout]    |                                   ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/parser.rs:58:35
[INFO] [stdout]    |
[INFO] [stdout] 58 |                 let s: Result<Box<Statement>, _> = Ok(Box::new(return_statement));
[INFO] [stdout]    |                                   ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "2d877e9db18f5c00421ac335796f1d602e286204164b7c612b289c0b504892a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d877e9db18f5c00421ac335796f1d602e286204164b7c612b289c0b504892a8", kill_on_drop: false }`
[INFO] [stdout] 2d877e9db18f5c00421ac335796f1d602e286204164b7c612b289c0b504892a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", 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] c7e123c1d104b0fe7e960684895a7ff3ea8a3693d9b51a2a70ba5f98969fac99
[INFO] running `Command { std: "docker" "start" "-a" "c7e123c1d104b0fe7e960684895a7ff3ea8a3693d9b51a2a70ba5f98969fac99", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ast/ast.rs:16:29
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub statements: Vec<Box<Statement>>,
[INFO] [stderr]    |                             ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ast/ast.rs:16:29
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub statements: Vec<Box<Statement>>,
[INFO] [stderr]    |                             ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ast/ast.rs:20:36
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn new(statements: Vec<Box<Statement>>) -> Self {
[INFO] [stderr]    |                                    ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ast/ast.rs:20:36
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn new(statements: Vec<Box<Statement>>) -> Self {
[INFO] [stderr]    |                                    ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/ast/let_statement.rs:7:27
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pub value: Option<Box<Expression>>,
[INFO] [stderr]   |                           ^^^^^^^^^^ help: use `dyn`: `dyn Expression`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/ast/let_statement.rs:7:27
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pub value: Option<Box<Expression>>,
[INFO] [stderr]   |                           ^^^^^^^^^^ help: use `dyn`: `dyn Expression`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ast/let_statement.rs:11:66
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(token: Token, name: Identifier, value: Option<Box<Expression>>) -> Self {
[INFO] [stderr]    |                                                                  ^^^^^^^^^^ help: use `dyn`: `dyn Expression`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/ast/return_statement.rs:6:34
[INFO] [stderr]   |
[INFO] [stderr] 6 |     pub return_value: Option<Box<Expression>>,
[INFO] [stderr]   |                                  ^^^^^^^^^^ help: use `dyn`: `dyn Expression`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ast/let_statement.rs:11:66
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(token: Token, name: Identifier, value: Option<Box<Expression>>) -> Self {
[INFO] [stderr]    |                                                                  ^^^^^^^^^^ help: use `dyn`: `dyn Expression`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/ast/expression_statement.rs:6:32
[INFO] [stderr]   |
[INFO] [stderr] 6 |     pub expression: Option<Box<Expression>>,
[INFO] [stderr]   |                                ^^^^^^^^^^ help: use `dyn`: `dyn Expression`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/parser.rs:32:33
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let statements: Vec<Box<Statement>> = vec![];
[INFO] [stderr]    |                                 ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/ast/return_statement.rs:6:34
[INFO] [stderr]   |
[INFO] [stderr] 6 |     pub return_value: Option<Box<Expression>>,
[INFO] [stderr]   |                                  ^^^^^^^^^^ help: use `dyn`: `dyn Expression`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/parser.rs:49:49
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn parse_statement(&mut self) -> Result<Box<Statement>, ParseError> {
[INFO] [stderr]    |                                                 ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/parser.rs:53:35
[INFO] [stderr]    |
[INFO] [stderr] 53 |                 let s: Result<Box<Statement>, _> = Ok(Box::new(let_statement));
[INFO] [stderr]    |                                   ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/ast/expression_statement.rs:6:32
[INFO] [stderr]   |
[INFO] [stderr] 6 |     pub expression: Option<Box<Expression>>,
[INFO] [stderr]   |                                ^^^^^^^^^^ help: use `dyn`: `dyn Expression`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/parser.rs:58:35
[INFO] [stderr]    |
[INFO] [stderr] 58 |                 let s: Result<Box<Statement>, _> = Ok(Box::new(return_statement));
[INFO] [stderr]    |                                   ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/parser.rs:32:33
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let statements: Vec<Box<Statement>> = vec![];
[INFO] [stderr]    |                                 ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/parser.rs:49:49
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn parse_statement(&mut self) -> Result<Box<Statement>, ParseError> {
[INFO] [stderr]    |                                                 ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/parser.rs:53:35
[INFO] [stderr]    |
[INFO] [stderr] 53 |                 let s: Result<Box<Statement>, _> = Ok(Box::new(let_statement));
[INFO] [stderr]    |                                   ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/parser.rs:58:35
[INFO] [stderr]    |
[INFO] [stderr] 58 |                 let s: Result<Box<Statement>, _> = Ok(Box::new(return_statement));
[INFO] [stderr]    |                                   ^^^^^^^^^ help: use `dyn`: `dyn Statement`
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/writing_an_interpreter_in_rust-d18357cf0c20036e
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test ast::ast::test::test_to_stirng ... ok
[INFO] [stdout] test token::token_type::fail_parse ... ok
[INFO] [stdout] test token::token_type::parse_test ... ok
[INFO] [stdout] test parser::parser::test_invalid_let_statement ... ok
[INFO] [stdout] test parser::parser::test_return_statement ... ok
[INFO] [stdout] test parser::parser::test_let_statement ... ok
[INFO] [stdout] test lexer::lexer::test_next_token ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/writing_an_interpreter_in_rust-3f477ccfa84abae9
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests writing-an-interpreter-in-rust
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c7e123c1d104b0fe7e960684895a7ff3ea8a3693d9b51a2a70ba5f98969fac99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7e123c1d104b0fe7e960684895a7ff3ea8a3693d9b51a2a70ba5f98969fac99", kill_on_drop: false }`
[INFO] [stdout] c7e123c1d104b0fe7e960684895a7ff3ea8a3693d9b51a2a70ba5f98969fac99