[INFO] cloning repository https://github.com/KoenWestendorp/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/KoenWestendorp/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKoenWestendorp%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKoenWestendorp%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] caf1328429193147989092701b9a9ced10172825
[INFO] building KoenWestendorp/rlox against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKoenWestendorp%2Frlox" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/KoenWestendorp/rlox on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/KoenWestendorp/rlox
[INFO] finished tweaking git repo https://github.com/KoenWestendorp/rlox
[INFO] tweaked toml for git repo https://github.com/KoenWestendorp/rlox written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/KoenWestendorp/rlox 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7752127474a961c05585144d94b0b1f5c0eb2a6737bdafcf7c96195d1ed99f45
[INFO] running `Command { std: "docker" "start" "-a" "7752127474a961c05585144d94b0b1f5c0eb2a6737bdafcf7c96195d1ed99f45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7752127474a961c05585144d94b0b1f5c0eb2a6737bdafcf7c96195d1ed99f45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7752127474a961c05585144d94b0b1f5c0eb2a6737bdafcf7c96195d1ed99f45", kill_on_drop: false }`
[INFO] [stdout] 7752127474a961c05585144d94b0b1f5c0eb2a6737bdafcf7c96195d1ed99f45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5810df110359cf741c99b441a0f364447fb47cdb621d314772023e12972dd6f
[INFO] running `Command { std: "docker" "start" "-a" "e5810df110359cf741c99b441a0f364447fb47cdb621d314772023e12972dd6f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Arguments`
[INFO] [stdout]  --> src/ast.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Arguments, Display};
[INFO] [stdout]   |                ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Expr`
[INFO] [stdout]  --> src/callable.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::ast::{Expr, Stmt};
[INFO] [stdout]   |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/callable.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::environment::{self, Environment};
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `environment::Environment`
[INFO] [stdout]  --> src/token.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     environment::Environment,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `params`
[INFO] [stdout]    --> src/ast.rs:130:36
[INFO] [stdout]     |
[INFO] [stdout] 130 |             Stmt::Function { name, params, body } => write!(f, "<fn {name}>", name = name.lexeme()),
[INFO] [stdout]     |                                    ^^^^^^ help: try ignoring the field: `params: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `body`
[INFO] [stdout]    --> src/ast.rs:130:44
[INFO] [stdout]     |
[INFO] [stdout] 130 |             Stmt::Function { name, params, body } => write!(f, "<fn {name}>", name = name.lexeme()),
[INFO] [stdout]     |                                            ^^^^ help: try ignoring the field: `body: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `globals` and `backtrace` are never read
[INFO] [stdout]   --> src/interpreter.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub(crate) struct Interpreter {
[INFO] [stdout]    |                   ----------- fields in this struct
[INFO] [stdout] 9  |     globals: Box<Environment>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 10 |     backtrace: Vec<Expr>,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Interpreter` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Identifier` is never constructed
[INFO] [stdout]   --> src/token.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub enum Literal {
[INFO] [stdout]    |          ------- variant in this enum
[INFO] [stdout] 69 |     Identifier(String),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Literal` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `identifier` is never used
[INFO] [stdout]   --> src/token.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 77 | impl Literal {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 78 |     fn identifier(&self) -> Option<&String> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "e5810df110359cf741c99b441a0f364447fb47cdb621d314772023e12972dd6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5810df110359cf741c99b441a0f364447fb47cdb621d314772023e12972dd6f", kill_on_drop: false }`
[INFO] [stdout] e5810df110359cf741c99b441a0f364447fb47cdb621d314772023e12972dd6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ace1643a9cdfb6050a09423878514fd1a434b2d2296bf5d270c3e3ddca45aef6
[INFO] running `Command { std: "docker" "start" "-a" "ace1643a9cdfb6050a09423878514fd1a434b2d2296bf5d270c3e3ddca45aef6", kill_on_drop: false }`
[INFO] [stderr]    Compiling rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Arguments`
[INFO] [stdout]  --> src/ast.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Arguments, Display};
[INFO] [stdout]   |                ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Expr`
[INFO] [stdout]  --> src/callable.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::ast::{Expr, Stmt};
[INFO] [stdout]   |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/callable.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::environment::{self, Environment};
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `environment::Environment`
[INFO] [stdout]  --> src/token.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     environment::Environment,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `params`
[INFO] [stdout]    --> src/ast.rs:130:36
[INFO] [stdout]     |
[INFO] [stdout] 130 |             Stmt::Function { name, params, body } => write!(f, "<fn {name}>", name = name.lexeme()),
[INFO] [stdout]     |                                    ^^^^^^ help: try ignoring the field: `params: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `body`
[INFO] [stdout]    --> src/ast.rs:130:44
[INFO] [stdout]     |
[INFO] [stdout] 130 |             Stmt::Function { name, params, body } => write!(f, "<fn {name}>", name = name.lexeme()),
[INFO] [stdout]     |                                            ^^^^ help: try ignoring the field: `body: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `globals` and `backtrace` are never read
[INFO] [stdout]   --> src/interpreter.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub(crate) struct Interpreter {
[INFO] [stdout]    |                   ----------- fields in this struct
[INFO] [stdout] 9  |     globals: Box<Environment>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 10 |     backtrace: Vec<Expr>,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Interpreter` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Identifier` is never constructed
[INFO] [stdout]   --> src/token.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub enum Literal {
[INFO] [stdout]    |          ------- variant in this enum
[INFO] [stdout] 69 |     Identifier(String),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Literal` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `identifier` is never used
[INFO] [stdout]   --> src/token.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 77 | impl Literal {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 78 |     fn identifier(&self) -> Option<&String> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "ace1643a9cdfb6050a09423878514fd1a434b2d2296bf5d270c3e3ddca45aef6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ace1643a9cdfb6050a09423878514fd1a434b2d2296bf5d270c3e3ddca45aef6", kill_on_drop: false }`
[INFO] [stdout] ace1643a9cdfb6050a09423878514fd1a434b2d2296bf5d270c3e3ddca45aef6