[INFO] cloning repository https://github.com/AliasT/craftinginterpreters
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AliasT/craftinginterpreters" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAliasT%2Fcraftinginterpreters", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAliasT%2Fcraftinginterpreters'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec5c9c704420350b7e8b47233cf48ef8f4afc725
[INFO] testing AliasT/craftinginterpreters against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAliasT%2Fcraftinginterpreters" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AliasT/craftinginterpreters on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AliasT/craftinginterpreters
[INFO] finished tweaking git repo https://github.com/AliasT/craftinginterpreters
[INFO] tweaked toml for git repo https://github.com/AliasT/craftinginterpreters written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/AliasT/craftinginterpreters already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded phf_generator v0.9.0
[INFO] [stderr]   Downloaded phf_macros v0.9.0
[INFO] [stderr]   Downloaded phf v0.9.0
[INFO] [stderr]   Downloaded phf_shared v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 06f9a7ea467b6c9b3fb43cec78c134dab3b394fed26bbe01dcd5231a27e69ce3
[INFO] running `Command { std: "docker" "start" "-a" "06f9a7ea467b6c9b3fb43cec78c134dab3b394fed26bbe01dcd5231a27e69ce3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06f9a7ea467b6c9b3fb43cec78c134dab3b394fed26bbe01dcd5231a27e69ce3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06f9a7ea467b6c9b3fb43cec78c134dab3b394fed26bbe01dcd5231a27e69ce3", kill_on_drop: false }`
[INFO] [stdout] 06f9a7ea467b6c9b3fb43cec78c134dab3b394fed26bbe01dcd5231a27e69ce3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36700e654220df1ce44a7da9efeade9b519a2799deb9b05467d95cd541f81ef2
[INFO] running `Command { std: "docker" "start" "-a" "36700e654220df1ce44a7da9efeade9b519a2799deb9b05467d95cd541f81ef2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling siphasher v0.3.5
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling phf_shared v0.9.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling phf_generator v0.9.0
[INFO] [stderr]    Compiling phf_macros v0.9.0
[INFO] [stderr]    Compiling phf v0.9.0
[INFO] [stderr]    Compiling crafting v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TokenType`
[INFO] [stdout]  --> src/lexer/ast.rs:1:35
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::token::{Object, Token, TokenType};
[INFO] [stdout]   |                                   ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Debug`
[INFO] [stdout]  --> src/lexer/parser.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Debug, Display};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::BorrowMut`
[INFO] [stdout]  --> src/playground/lifetime.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::BorrowMut, collections::HashMap, marker::PhantomData};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/lexer/token.rs:122:36
[INFO] [stdout]     |
[INFO] [stdout] 122 |             UnionObject::Reference(v) => todo!(),
[INFO] [stdout]     |                                    ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `walk`
[INFO] [stdout]   --> src/lexer/ast.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn walk<F>(&self, visitor: &F) -> bool
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `c`
[INFO] [stdout]   --> src/playground/lifetime.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn c(&self, k: &'a i32) -> &B<'a> {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.93s
[INFO] running `Command { std: "docker" "inspect" "36700e654220df1ce44a7da9efeade9b519a2799deb9b05467d95cd541f81ef2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36700e654220df1ce44a7da9efeade9b519a2799deb9b05467d95cd541f81ef2", kill_on_drop: false }`
[INFO] [stdout] 36700e654220df1ce44a7da9efeade9b519a2799deb9b05467d95cd541f81ef2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62abdd1b391dbacfd5d33c63dfbebb5e01db029a75cd490a7cc0cd87d40cee26
[INFO] running `Command { std: "docker" "start" "-a" "62abdd1b391dbacfd5d33c63dfbebb5e01db029a75cd490a7cc0cd87d40cee26", kill_on_drop: false }`
[INFO] [stderr]    Compiling crafting v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TokenType`
[INFO] [stdout]  --> src/lexer/ast.rs:1:35
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::token::{Object, Token, TokenType};
[INFO] [stdout]   |                                   ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Debug`
[INFO] [stdout]  --> src/lexer/parser.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Debug, Display};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::BorrowMut`
[INFO] [stdout]  --> src/playground/lifetime.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::BorrowMut, collections::HashMap, marker::PhantomData};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/lexer/token.rs:122:36
[INFO] [stdout]     |
[INFO] [stdout] 122 |             UnionObject::Reference(v) => todo!(),
[INFO] [stdout]     |                                    ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `walk`
[INFO] [stdout]   --> src/lexer/ast.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn walk<F>(&self, visitor: &F) -> bool
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `c`
[INFO] [stdout]   --> src/playground/lifetime.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn c(&self, k: &'a i32) -> &B<'a> {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Debug`
[INFO] [stdout]  --> src/lexer/parser.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Debug, Display};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::BorrowMut`
[INFO] [stdout]  --> src/playground/lifetime.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::BorrowMut, collections::HashMap, marker::PhantomData};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/lexer/ast.rs:66:14
[INFO] [stdout]    |
[INFO] [stdout] 66 |     e.walk(&|expr| {
[INFO] [stdout]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/lexer/token.rs:122:36
[INFO] [stdout]     |
[INFO] [stdout] 122 |             UnionObject::Reference(v) => todo!(),
[INFO] [stdout]     |                                    ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/playground/lifetime.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let b = a.c(&1);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lexer/ast.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let mut i = 0;
[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: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "62abdd1b391dbacfd5d33c63dfbebb5e01db029a75cd490a7cc0cd87d40cee26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62abdd1b391dbacfd5d33c63dfbebb5e01db029a75cd490a7cc0cd87d40cee26", kill_on_drop: false }`
[INFO] [stdout] 62abdd1b391dbacfd5d33c63dfbebb5e01db029a75cd490a7cc0cd87d40cee26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 84081a1b03f683bacf1a1c88f377e7b103a79bf67a1d75bfa0d479e0c6c408d6
[INFO] running `Command { std: "docker" "start" "-a" "84081a1b03f683bacf1a1c88f377e7b103a79bf67a1d75bfa0d479e0c6c408d6", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused import: `TokenType`
[INFO] [stdout] running 4 tests
[INFO] [stderr]  --> src/lexer/ast.rs:1:35
[INFO] [stdout] test lexer::ast::expression_display ... ok
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::token::{Object, Token, TokenType};
[INFO] [stderr]   |                                   ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Debug`
[INFO] [stderr]  --> src/lexer/parser.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fmt::{Debug, Display};
[INFO] [stderr]   |                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `borrow::BorrowMut`
[INFO] [stderr]  --> src/playground/lifetime.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{borrow::BorrowMut, collections::HashMap, marker::PhantomData};
[INFO] [stderr]   |           ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]    --> src/lexer/token.rs:122:36
[INFO] [stderr]     |
[INFO] [stderr] 122 |             UnionObject::Reference(v) => todo!(),
[INFO] [stderr]     |                                    ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `walk`
[INFO] [stderr]   --> src/lexer/ast.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn walk<F>(&self, visitor: &F) -> bool
[INFO] [stderr]    |        ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `c`
[INFO] [stderr]   --> src/playground/lifetime.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn c(&self, k: &'a i32) -> &B<'a> {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Debug`
[INFO] [stderr]  --> src/lexer/parser.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fmt::{Debug, Display};
[INFO] [stderr]   |                ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]   --> src/lexer/ast.rs:66:14
[INFO] [stderr]    |
[INFO] [stderr] 66 |     e.walk(&|expr| {
[INFO] [stderr]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]    --> src/lexer/token.rs:122:36
[INFO] [stderr]     |
[INFO] [stderr] 122 |             UnionObject::Reference(v) => todo!(),
[INFO] [stderr]     |                                    ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/playground/lifetime.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     let b = a.c(&1);
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lexer/ast.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 |     let mut i = 0;
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `crafting` (lib) generated 6 warnings
[INFO] [stderr] warning: `crafting` (lib test) generated 6 warnings (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/crafting-e17a4eda6a2e1320)
[INFO] [stdout] test playground::lifetime::test ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/crafting-383a4e58526b9c9d)
[INFO] [stdout] test lexer::parser::test ... ok
[INFO] [stdout] test lexer::compiler::test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests crafting
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "84081a1b03f683bacf1a1c88f377e7b103a79bf67a1d75bfa0d479e0c6c408d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84081a1b03f683bacf1a1c88f377e7b103a79bf67a1d75bfa0d479e0c6c408d6", kill_on_drop: false }`
[INFO] [stdout] 84081a1b03f683bacf1a1c88f377e7b103a79bf67a1d75bfa0d479e0c6c408d6