[INFO] cloning repository https://github.com/kameczera/crafting-interpreters
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kameczera/crafting-interpreters" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkameczera%2Fcrafting-interpreters", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkameczera%2Fcrafting-interpreters'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5f1e7af7444e9d3610797d9438dd3878a23247d9
[INFO] building kameczera/crafting-interpreters 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%2Fkameczera%2Fcrafting-interpreters" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kameczera/crafting-interpreters 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/kameczera/crafting-interpreters
[INFO] finished tweaking git repo https://github.com/kameczera/crafting-interpreters
[INFO] tweaked toml for git repo https://github.com/kameczera/crafting-interpreters written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kameczera/crafting-interpreters 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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 27b5f3e00336be834b7377a3fd40f2f773e4a55706ae011158355f5652e5e63b
[INFO] running `Command { std: "docker" "start" "-a" "27b5f3e00336be834b7377a3fd40f2f773e4a55706ae011158355f5652e5e63b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27b5f3e00336be834b7377a3fd40f2f773e4a55706ae011158355f5652e5e63b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27b5f3e00336be834b7377a3fd40f2f773e4a55706ae011158355f5652e5e63b", kill_on_drop: false }`
[INFO] [stdout] 27b5f3e00336be834b7377a3fd40f2f773e4a55706ae011158355f5652e5e63b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 20e043e181b80b78830db21ff1f8d40c61da673247c4176cc1ee90f3539c4da7
[INFO] running `Command { std: "docker" "start" "-a" "20e043e181b80b78830db21ff1f8d40c61da673247c4176cc1ee90f3539c4da7", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `super::object`
[INFO] [stdout]  --> src/lox/lox_callable.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::object::*;
[INFO] [stdout]   |            ^^^^^^ could not find `object` in `super`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> src/lox/lang.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lox::expr`
[INFO] [stdout]  --> src/lox/lang.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::lox::expr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lox::interpreter`
[INFO] [stdout]  --> src/lox/lang.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::lox::interpreter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/lox/parser.rs:453:16
[INFO] [stdout]     |
[INFO] [stdout] 453 |             if (self.check(token_type)) {
[INFO] [stdout]     |                ^                      ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 453 -             if (self.check(token_type)) {
[INFO] [stdout] 453 +             if self.check(token_type) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `lang::Lox`, `self`, and `self`
[INFO] [stdout]  --> src/lox/interpreter.rs:6:30
[INFO] [stdout]   |
[INFO] [stdout] 6 |     environment, exception::{self, Exception}, lang::Lox, lox_callable::LoxCallable, objects::{self, *}
[INFO] [stdout]   |                              ^^^^              ^^^^^^^^^                                       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Literal as TokenLiteral`
[INFO] [stdout]   --> src/lox/interpreter.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |     token::{Literal as TokenLiteral, *},
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around pattern
[INFO] [stdout]    --> src/lox/interpreter.rs:207:31
[INFO] [stdout]     |
[INFO] [stdout] 207 |                 } else if let (Object::String(left_value)) = values.0 {
[INFO] [stdout]     |                               ^                          ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 207 -                 } else if let (Object::String(left_value)) = values.0 {
[INFO] [stdout] 207 +                 } else if let Object::String(left_value) = values.0 {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/lox/environment.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::exception`
[INFO] [stdout]  --> src/lox/environment.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use super::exception;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `arity` found for struct `LoxCallable` in the current scope
[INFO] [stdout]    --> src/lox/interpreter.rs:254:40
[INFO] [stdout]     |
[INFO] [stdout] 254 |         if arguments.len() != function.arity() {
[INFO] [stdout]     |                                        ^^^^^ method not found in `LoxCallable`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lox/lox_callable.rs:5:1
[INFO] [stdout]     |
[INFO] [stdout] 5   | pub struct LoxCallable {
[INFO] [stdout]     | ---------------------- method `arity` not found for this struct
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `call` found for struct `LoxCallable` in the current scope
[INFO] [stdout]    --> src/lox/interpreter.rs:257:25
[INFO] [stdout]     |
[INFO] [stdout] 257 |         return function.call(self, arguments);
[INFO] [stdout]     |                ---------^^^^-----------------
[INFO] [stdout]     |                |        |
[INFO] [stdout]     |                |        this is an associated function, not a method
[INFO] [stdout]     |                help: use associated function syntax instead: `LoxCallable::call(self, arguments)`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lox/lox_callable.rs:5:1
[INFO] [stdout]     |
[INFO] [stdout] 5   | pub struct LoxCallable {
[INFO] [stdout]     | ---------------------- method `call` not found for this struct
[INFO] [stdout]     |
[INFO] [stdout]     = note: found the following associated functions; to be used as methods, functions must have a `self` parameter
[INFO] [stdout] note: the candidate is defined in an impl for the type `LoxCallable`
[INFO] [stdout]    --> src/lox/lox_callable.rs:9:5
[INFO] [stdout]     |
[INFO] [stdout] 9   |     fn call(interpreter: Interpreter, arguments: Vec<Object>) -> Result<Object, Exception> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following trait defines an item `call`, perhaps you need to implement it:
[INFO] [stdout]             candidate #1: `Fn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0605]: non-primitive cast: `objects::Object` as `LoxCallable`
[INFO] [stdout]    --> src/lox/interpreter.rs:253:37
[INFO] [stdout]     |
[INFO] [stdout] 253 |         let function: LoxCallable = callee as LoxCallable;
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^ an `as` expression can only be used to convert between primitive types or to coerce to a specific trait object
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lox/interpreter.rs:334:13
[INFO] [stdout]     |
[INFO] [stdout] 334 |         let mut right = self.evaluate(*expr.right)?;
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `number`
[INFO] [stdout]    --> src/lox/interpreter.rs:361:31
[INFO] [stdout]     |
[INFO] [stdout] 361 |         if let Object::Number(number) = operand {
[INFO] [stdout]     |                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/lox/objects.rs:32:31
[INFO] [stdout]    |
[INFO] [stdout] 32 |         if let Object::String(s) = self {
[INFO] [stdout]    |                               ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/lox/objects.rs:58:31
[INFO] [stdout]    |
[INFO] [stdout] 58 |         if let Object::Number(s) = self {
[INFO] [stdout]    |                               ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599, E0605.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lox` (bin "lox") due to 4 previous errors; 13 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "20e043e181b80b78830db21ff1f8d40c61da673247c4176cc1ee90f3539c4da7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20e043e181b80b78830db21ff1f8d40c61da673247c4176cc1ee90f3539c4da7", kill_on_drop: false }`
[INFO] [stdout] 20e043e181b80b78830db21ff1f8d40c61da673247c4176cc1ee90f3539c4da7