[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] checking mzumi/writing-an-interpreter-in-rust against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmzumi%2Fwriting-an-interpreter-in-rust" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mzumi/writing-an-interpreter-in-rust on toolchain 4a04890980766cc79878135f5ade8c0c4321e943
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-7/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" "+4a04890980766cc79878135f5ade8c0c4321e943" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "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] da38cfd914bbd890bf17ff0d9eee54e95b2dfa9cb6bff47bd920714c86c411ce
[INFO] running `Command { std: "docker" "start" "-a" "da38cfd914bbd890bf17ff0d9eee54e95b2dfa9cb6bff47bd920714c86c411ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da38cfd914bbd890bf17ff0d9eee54e95b2dfa9cb6bff47bd920714c86c411ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da38cfd914bbd890bf17ff0d9eee54e95b2dfa9cb6bff47bd920714c86c411ce", kill_on_drop: false }`
[INFO] [stdout] da38cfd914bbd890bf17ff0d9eee54e95b2dfa9cb6bff47bd920714c86c411ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aa672fc1dcca3473d75db14f7c9fcd27c314a885f66eebfe1d1983d0c0108bd3
[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" "aa672fc1dcca3473d75db14f7c9fcd27c314a885f66eebfe1d1983d0c0108bd3", kill_on_drop: false }`
[INFO] [stderr]     Checking 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: 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: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "aa672fc1dcca3473d75db14f7c9fcd27c314a885f66eebfe1d1983d0c0108bd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa672fc1dcca3473d75db14f7c9fcd27c314a885f66eebfe1d1983d0c0108bd3", kill_on_drop: false }`
[INFO] [stdout] aa672fc1dcca3473d75db14f7c9fcd27c314a885f66eebfe1d1983d0c0108bd3