[INFO] cloning repository https://github.com/paxromana96/lisp_compiler_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/paxromana96/lisp_compiler_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaxromana96%2Flisp_compiler_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaxromana96%2Flisp_compiler_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 90fbbf2891f5cbb7e805c93ecb6f9dc1d7dad987
[INFO] checking paxromana96/lisp_compiler_rust against master#9fa580b1175018b0a276b0bc68f9827a106f7260 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaxromana96%2Flisp_compiler_rust" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/paxromana96/lisp_compiler_rust on toolchain 9fa580b1175018b0a276b0bc68f9827a106f7260
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/paxromana96/lisp_compiler_rust
[INFO] finished tweaking git repo https://github.com/paxromana96/lisp_compiler_rust
[INFO] tweaked toml for git repo https://github.com/paxromana96/lisp_compiler_rust written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/paxromana96/lisp_compiler_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a1ae451ed782682b0c6e51fffc6546bfd96f8ae4b033bf8ede00b6af912faae
[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" "4a1ae451ed782682b0c6e51fffc6546bfd96f8ae4b033bf8ede00b6af912faae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a1ae451ed782682b0c6e51fffc6546bfd96f8ae4b033bf8ede00b6af912faae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a1ae451ed782682b0c6e51fffc6546bfd96f8ae4b033bf8ede00b6af912faae", kill_on_drop: false }`
[INFO] [stdout] 4a1ae451ed782682b0c6e51fffc6546bfd96f8ae4b033bf8ede00b6af912faae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90334c35535c96afe7ce0c1a010821840545df6f50e99fe10469bddfb8a27017
[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" "90334c35535c96afe7ce0c1a010821840545df6f50e99fe10469bddfb8a27017", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking lisp_compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::lexer::traits::*`
[INFO] [stdout]  --> src/ast/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::lexer::traits::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/errors.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/errors.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Lexable`
[INFO] [stdout]  --> src/parser/mod.rs:2:20
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lexer::{Lexable, Lexer};
[INFO] [stdout]   |                    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lexer::Lexable`
[INFO] [stdout]  --> src/parser/tree.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::lexer::Lexable;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/errors.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/errors.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::parser::traits`
[INFO] [stdout]  --> src/ast/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::parser::traits::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::traits`
[INFO] [stdout]   --> src/parser/tree.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use super::traits::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cell`
[INFO] [stdout]   --> src/ast/mod.rs:76:29
[INFO] [stdout]    |
[INFO] [stdout] 76 |                         let cell = &cells[&cons_idx];
[INFO] [stdout]    |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_cell`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cell`
[INFO] [stdout]   --> src/ast/mod.rs:95:25
[INFO] [stdout]    |
[INFO] [stdout] 95 |                     let cell = &cells[&cons_idx];
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_cell`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nil`
[INFO] [stdout]   --> src/ast/mod.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     Nil,
[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: `preorder_traversal`
[INFO] [stdout]    --> src/ast/mod.rs:166:8
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn preorder_traversal<'a>(&'a self) -> PreOrderAstTraversal<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fmt_errors`
[INFO] [stdout]    --> src/ast/mod.rs:536:4
[INFO] [stdout]     |
[INFO] [stdout] 536 | fn fmt_errors<E: CompilerError>(errors: Vec<E>) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `unwrap`
[INFO] [stdout]    --> src/ast/mod.rs:543:4
[INFO] [stdout]     |
[INFO] [stdout] 543 | fn unwrap<T, E: CompilerError>(val: Result<T, Vec<E>>) -> T {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `i32`
[INFO] [stdout]   --> src/lexer/mod.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn i32(val: i32, loc: Range<CharLocation>) -> Token {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `assert_lexes_to`
[INFO] [stdout]    --> src/lexer/mod.rs:215:8
[INFO] [stdout]     |
[INFO] [stdout] 215 |     fn assert_lexes_to(text: &str, expected_tokens: Vec<Result<Token, Error>>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/ast/mod.rs:546:31
[INFO] [stdout]     |
[INFO] [stdout] 546 |         Err(errors) => panic!(fmt_errors(errors)),
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 546 |         Err(errors) => panic!("{}", fmt_errors(errors)),
[INFO] [stdout]     |                               ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 546 |         Err(errors) => std::panic::panic_any(fmt_errors(errors)),
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cell`
[INFO] [stdout]   --> src/ast/mod.rs:76:29
[INFO] [stdout]    |
[INFO] [stdout] 76 |                         let cell = &cells[&cons_idx];
[INFO] [stdout]    |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_cell`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cell`
[INFO] [stdout]   --> src/ast/mod.rs:95:25
[INFO] [stdout]    |
[INFO] [stdout] 95 |                     let cell = &cells[&cons_idx];
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_cell`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nil`
[INFO] [stdout]   --> src/ast/mod.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     Nil,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/ast/mod.rs:546:31
[INFO] [stdout]     |
[INFO] [stdout] 546 |         Err(errors) => panic!(fmt_errors(errors)),
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 546 |         Err(errors) => panic!("{}", fmt_errors(errors)),
[INFO] [stdout]     |                               ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 546 |         Err(errors) => std::panic::panic_any(fmt_errors(errors)),
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/ast/mod.rs:554:31
[INFO] [stdout]     |
[INFO] [stdout] 554 |         Err(errors) => panic!(fmt_errors(errors)),
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 554 |         Err(errors) => panic!("{}", fmt_errors(errors)),
[INFO] [stdout]     |                               ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 554 |         Err(errors) => std::panic::panic_any(fmt_errors(errors)),
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/ast/mod.rs:590:31
[INFO] [stdout]     |
[INFO] [stdout] 590 |         Err(errors) => panic!(fmt_errors(errors)),
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 590 |         Err(errors) => panic!("{}", fmt_errors(errors)),
[INFO] [stdout]     |                               ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 590 |         Err(errors) => std::panic::panic_any(fmt_errors(errors)),
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/ast/mod.rs:693:31
[INFO] [stdout]     |
[INFO] [stdout] 693 |         Err(errors) => panic!(fmt_errors(errors)),
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 693 |         Err(errors) => panic!("{}", fmt_errors(errors)),
[INFO] [stdout]     |                               ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 693 |         Err(errors) => std::panic::panic_any(fmt_errors(errors)),
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/ast/mod.rs:705:31
[INFO] [stdout]     |
[INFO] [stdout] 705 |         Err(errors) => panic!(fmt_errors(errors)),
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 705 |         Err(errors) => panic!("{}", fmt_errors(errors)),
[INFO] [stdout]     |                               ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 705 |         Err(errors) => std::panic::panic_any(fmt_errors(errors)),
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.65s
[INFO] running `Command { std: "docker" "inspect" "90334c35535c96afe7ce0c1a010821840545df6f50e99fe10469bddfb8a27017", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90334c35535c96afe7ce0c1a010821840545df6f50e99fe10469bddfb8a27017", kill_on_drop: false }`
[INFO] [stdout] 90334c35535c96afe7ce0c1a010821840545df6f50e99fe10469bddfb8a27017