[INFO] cloning repository https://github.com/josht-jpg/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/josht-jpg/writing-an-interpreter-in-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjosht-jpg%2Fwriting-an-interpreter-in-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjosht-jpg%2Fwriting-an-interpreter-in-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 25ee177bd19eeff6b11e03258076186acca584f4
[INFO] checking josht-jpg/writing-an-interpreter-in-Rust against master#46424fb5054f211ec836c5c03159f92e46bb35ac for pr-139042
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjosht-jpg%2Fwriting-an-interpreter-in-Rust" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/josht-jpg/writing-an-interpreter-in-Rust on toolchain 46424fb5054f211ec836c5c03159f92e46bb35ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+46424fb5054f211ec836c5c03159f92e46bb35ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/josht-jpg/writing-an-interpreter-in-Rust
[INFO] finished tweaking git repo https://github.com/josht-jpg/writing-an-interpreter-in-Rust
[INFO] tweaked toml for git repo https://github.com/josht-jpg/writing-an-interpreter-in-Rust written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/josht-jpg/writing-an-interpreter-in-Rust 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" "+46424fb5054f211ec836c5c03159f92e46bb35ac" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+46424fb5054f211ec836c5c03159f92e46bb35ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97294aace58e62097e1d494af9e346b3a2a4cbd0afb62281b62714de3ad26e21
[INFO] running `Command { std: "docker" "start" "-a" "97294aace58e62097e1d494af9e346b3a2a4cbd0afb62281b62714de3ad26e21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97294aace58e62097e1d494af9e346b3a2a4cbd0afb62281b62714de3ad26e21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97294aace58e62097e1d494af9e346b3a2a4cbd0afb62281b62714de3ad26e21", kill_on_drop: false }`
[INFO] [stdout] 97294aace58e62097e1d494af9e346b3a2a4cbd0afb62281b62714de3ad26e21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+46424fb5054f211ec836c5c03159f92e46bb35ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c739d993673d205d53ed6386dfa3ded48c88856233cf1c4fd4b84d3b484194e9
[INFO] running `Command { std: "docker" "start" "-a" "c739d993673d205d53ed6386dfa3ded48c88856233cf1c4fd4b84d3b484194e9", kill_on_drop: false }`
[INFO] [stderr]     Checking interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]  --> src/repl.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     while true {
[INFO] [stdout]   |     ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]  --> src/repl.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     while true {
[INFO] [stdout]   |     ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Node` is never used
[INFO] [stdout]  --> src/ast.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | trait Node {
[INFO] [stdout]   |       ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `kind` is never read
[INFO] [stdout]   --> src/ast.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Expression {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 15 |     pub kind: ExpressionKinds,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `expression_node` is never used
[INFO] [stdout]   --> src/ast.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl Expression {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 21 |     fn expression_node() {}
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ReturnStatement` is never constructed
[INFO] [stdout]   --> src/ast.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub enum StatementKinds {
[INFO] [stdout]    |          -------------- variant in this enum
[INFO] [stdout] 28 |     LetStatement,
[INFO] [stdout] 29 |     ReturnStatement,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `kind` and `value` are never read
[INFO] [stdout]   --> src/ast.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct Statement {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 35 |     pub kind: StatementKinds,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub value: Expression,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `statement_node` is never used
[INFO] [stdout]   --> src/ast.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl Statement {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 45 |     fn statement_node() {}
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PROMPT` is never used
[INFO] [stdout]  --> src/repl.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | const PROMPT: &str = ">> ";
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `start` is never used
[INFO] [stdout]  --> src/repl.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn start() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ASTERISK` is never used
[INFO] [stdout]   --> src/token.rs:22:11
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub const ASTERISK: &str = "*";
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LT` is never used
[INFO] [stdout]   --> src/token.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub const LT: &str = "<";
[INFO] [stdout]    |           ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `GT` is never used
[INFO] [stdout]   --> src/token.rs:26:11
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub const GT: &str = ">";
[INFO] [stdout]    |           ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Token` should have a snake case name
[INFO] [stdout]   --> src/ast.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub Token: token::Token,
[INFO] [stdout]    |         ^^^^^ help: convert the identifier to snake case: `token`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Value` should have a snake case name
[INFO] [stdout]   --> src/ast.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub Value: String,
[INFO] [stdout]    |         ^^^^^ help: convert the identifier to snake case (notice the capitalization): `value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Statements` should have a snake case name
[INFO] [stdout]   --> src/ast.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub Statements: Vec<Statement>,
[INFO] [stdout]    |         ^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `statements`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Node` is never used
[INFO] [stdout]  --> src/ast.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | trait Node {
[INFO] [stdout]   |       ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `kind` is never read
[INFO] [stdout]   --> src/ast.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Expression {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 15 |     pub kind: ExpressionKinds,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `expression_node` is never used
[INFO] [stdout]   --> src/ast.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl Expression {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 21 |     fn expression_node() {}
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ReturnStatement` is never constructed
[INFO] [stdout]   --> src/ast.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub enum StatementKinds {
[INFO] [stdout]    |          -------------- variant in this enum
[INFO] [stdout] 28 |     LetStatement,
[INFO] [stdout] 29 |     ReturnStatement,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `kind` and `value` are never read
[INFO] [stdout]   --> src/ast.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct Statement {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 35 |     pub kind: StatementKinds,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub value: Expression,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `statement_node` is never used
[INFO] [stdout]   --> src/ast.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl Statement {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 45 |     fn statement_node() {}
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PROMPT` is never used
[INFO] [stdout]  --> src/repl.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | const PROMPT: &str = ">> ";
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `start` is never used
[INFO] [stdout]  --> src/repl.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn start() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ASTERISK` is never used
[INFO] [stdout]   --> src/token.rs:22:11
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub const ASTERISK: &str = "*";
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LT` is never used
[INFO] [stdout]   --> src/token.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub const LT: &str = "<";
[INFO] [stdout]    |           ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `GT` is never used
[INFO] [stdout]   --> src/token.rs:26:11
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub const GT: &str = ">";
[INFO] [stdout]    |           ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Token` should have a snake case name
[INFO] [stdout]   --> src/ast.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub Token: token::Token,
[INFO] [stdout]    |         ^^^^^ help: convert the identifier to snake case: `token`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Value` should have a snake case name
[INFO] [stdout]   --> src/ast.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub Value: String,
[INFO] [stdout]    |         ^^^^^ help: convert the identifier to snake case (notice the capitalization): `value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Statements` should have a snake case name
[INFO] [stdout]   --> src/ast.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub Statements: Vec<Statement>,
[INFO] [stdout]    |         ^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `statements`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/repl.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         io::stdin().read_line(&mut input);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let _ = io::stdin().read_line(&mut input);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Type` should have a snake case name
[INFO] [stdout]  --> src/token.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub Type: String,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: rename the identifier or convert it to a snake case raw identifier
[INFO] [stdout]   |
[INFO] [stdout] 5 -     pub Type: String,
[INFO] [stdout] 5 +     pub r#type: String,
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Literal` should have a snake case name
[INFO] [stdout]  --> src/token.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub Literal: String,
[INFO] [stdout]   |         ^^^^^^^ help: convert the identifier to snake case: `literal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/repl.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         io::stdin().read_line(&mut input);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let _ = io::stdin().read_line(&mut input);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Type` should have a snake case name
[INFO] [stdout]  --> src/token.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub Type: String,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: rename the identifier or convert it to a snake case raw identifier
[INFO] [stdout]   |
[INFO] [stdout] 5 -     pub Type: String,
[INFO] [stdout] 5 +     pub r#type: String,
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Literal` should have a snake case name
[INFO] [stdout]  --> src/token.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub Literal: String,
[INFO] [stdout]   |         ^^^^^^^ help: convert the identifier to snake case: `literal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not parse/generate dep info at: /opt/rustwide/target/debug/deps/interpreter-71525ba33d89f4af.d
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to write `/opt/rustwide/target/debug/.fingerprint/interpreter-71525ba33d89f4af/dep-test-bin-interpreter`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: failed to write `/opt/rustwide/target/debug/.fingerprint/interpreter-8effa8d942edad1a/bin-interpreter`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] running `Command { std: "docker" "inspect" "c739d993673d205d53ed6386dfa3ded48c88856233cf1c4fd4b84d3b484194e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c739d993673d205d53ed6386dfa3ded48c88856233cf1c4fd4b84d3b484194e9", kill_on_drop: false }`
[INFO] [stdout] c739d993673d205d53ed6386dfa3ded48c88856233cf1c4fd4b84d3b484194e9