[INFO] cloning repository https://github.com/oberblastmeister/monkey
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/oberblastmeister/monkey" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foberblastmeister%2Fmonkey", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foberblastmeister%2Fmonkey'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f3324627ebb543c5d00b39907c07a50ec83e2233
[INFO] checking oberblastmeister/monkey against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foberblastmeister%2Fmonkey" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-7-tc2/source/.cargo/config
[INFO] started tweaking git repo https://github.com/oberblastmeister/monkey
[INFO] finished tweaking git repo https://github.com/oberblastmeister/monkey
[INFO] tweaked toml for git repo https://github.com/oberblastmeister/monkey written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/oberblastmeister/monkey on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/oberblastmeister/monkey 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9b704f8371ff4c253cce93945ca139dc4be742cc40e88d1a8f359ca8efee04b6
[INFO] running `Command { std: "docker" "start" "-a" "9b704f8371ff4c253cce93945ca139dc4be742cc40e88d1a8f359ca8efee04b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b704f8371ff4c253cce93945ca139dc4be742cc40e88d1a8f359ca8efee04b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b704f8371ff4c253cce93945ca139dc4be742cc40e88d1a8f359ca8efee04b6", kill_on_drop: false }`
[INFO] [stdout] 9b704f8371ff4c253cce93945ca139dc4be742cc40e88d1a8f359ca8efee04b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d54f6fa6f9d5f1e818ae3ea7c8c0c86001d7bccdde9e48ca796a36ce2a67505
[INFO] running `Command { std: "docker" "start" "-a" "7d54f6fa6f9d5f1e818ae3ea7c8c0c86001d7bccdde9e48ca796a36ce2a67505", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.67
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling libc v0.2.87
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling trybuild v1.0.42
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking smol_str v0.1.17
[INFO] [stderr]     Checking la-arena v0.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]     Checking text-size v1.1.0
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking bstr v0.2.15
[INFO] [stderr]     Checking dtoa v0.4.7
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking similar v1.3.0
[INFO] [stderr]    Compiling eyre v0.6.5
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking textwrap v0.12.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking os_str_bytes v2.4.0
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling xshell-macros v0.1.9
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking xshell v0.1.9
[INFO] [stderr]     Checking terminal_size v0.1.16
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking console v0.14.0
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking directories-next v2.0.0
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking globset v0.4.6
[INFO] [stderr]     Checking rustyline v7.1.0
[INFO] [stderr]     Checking synstructure v0.12.4
[INFO] [stderr]     Checking monkey-macros v0.1.0 (/opt/rustwide/workdir/crates/monkey-macros)
[INFO] [stdout] warning: unused imports: `Ident` and `Span`
[INFO] [stdout]  --> crates/monkey-macros/src/lib.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | use proc_macro2::{Ident, Span, TokenStream};
[INFO] [stdout]   |                   ^^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stdout] warning: unused imports: `Ident` and `Span`
[INFO] [stdout]  --> crates/monkey-macros/src/lib.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | use proc_macro2::{Ident, Span, TokenStream};
[INFO] [stdout]   |                   ^^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking monkey-util v0.1.0 (/opt/rustwide/workdir/crates/monkey-util)
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking monkey-lang v0.1.0 (/opt/rustwide/workdir/crates/monkey-lang)
[INFO] [stdout] warning: unused import: `ParseError`
[INFO] [stdout]  --> crates/monkey-lang/src/ast/lit_num.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{Parse, ParseError, ParseResult, Parser, Peek, Peeker};
[INFO] [stdout]   |                    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ParseResult` and `Parse`
[INFO] [stdout]   --> crates/monkey-lang/src/ast/mod.rs:85:13
[INFO] [stdout]    |
[INFO] [stdout] 85 | use crate::{Parse, ParseError, ParseResult};
[INFO] [stdout]    |             ^^^^^              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `EvalResult`, `Eval`, `Value`, and `ast`
[INFO] [stdout]  --> crates/monkey-lang/src/evaluating/eval/file.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub use crate::{ast, Eval, EvalResult, Value};
[INFO] [stdout]   |                 ^^^  ^^^^  ^^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `EvalErrorKind`
[INFO] [stdout]  --> crates/monkey-lang/src/evaluating/mod.rs:7:33
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use eval_error::{EvalError, EvalErrorKind, EvalResult};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TextSize`
[INFO] [stdout]  --> crates/monkey-lang/src/parsing/lexer.rs:6:28
[INFO] [stdout]   |
[INFO] [stdout] 6 | use text_size::{TextRange, TextSize};
[INFO] [stdout]   |                            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::TryFrom`
[INFO] [stdout]   --> crates/monkey-lang/src/parsing/lexer.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::convert::TryFrom;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::fmt`
[INFO] [stdout]  --> crates/monkey-lang/src/parsing/parser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::fmt;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `la_arena::Arena`
[INFO] [stdout]  --> crates/monkey-lang/src/parsing/parser.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use la_arena::Arena;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::ShrinkToFit`
[INFO] [stdout]  --> crates/monkey-lang/src/parsing/parser.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::ShrinkToFit;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking clap v3.0.0-beta.2
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]   --> crates/monkey-lang/src/ast/lit_num.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |         let token = &num.token;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `actual` is never read
[INFO] [stdout]   --> crates/monkey-lang/src/parsing/parse_error.rs:19:19
[INFO] [stdout]    |
[INFO] [stdout] 19 |     ExpectedEof { actual: &'static str },
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]   --> crates/monkey-lang/src/parsing/parse_error.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     span: Span,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `kind` is never read
[INFO] [stdout]   --> crates/monkey-lang/src/parsing/parse_error.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     kind: ParseErrorKind,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `errors` and `node` are never read
[INFO] [stdout]   --> crates/monkey-lang/src/ast/mod.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub struct Ast<P> {
[INFO] [stdout]    |            --- fields in this struct
[INFO] [stdout] 88 |     arena: Arena,
[INFO] [stdout] 89 |     errors: Vec<ParseError>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 90 |     node: P,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ParamList` is never constructed
[INFO] [stdout]   --> crates/monkey-lang/src/ast/lit_fn.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct ParamList<T, DO, DC, SEP = T![,]>
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `EvalErrorKind` is never used
[INFO] [stdout]  --> crates/monkey-lang/src/evaluating/eval_error.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub enum EvalErrorKind {}
[INFO] [stdout]   |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `input` is never read
[INFO] [stdout]   --> crates/monkey-lang/src/parsing/lexer.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Source<'a> {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 20 |     input: &'a str,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Source` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `accept`, `peek_n`, and `text` are never used
[INFO] [stdout]   --> crates/monkey-lang/src/parsing/lexer.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl<'a> Source<'a> {
[INFO] [stdout]    | ------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn accept(&mut self, c: char) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     fn peek_n(&self, n: usize) -> Option<char> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83 |     fn text(&mut self) -> SmolStr {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `keyword` is never used
[INFO] [stdout]    --> crates/monkey-lang/src/parsing/lexer.rs:280:4
[INFO] [stdout]     |
[INFO] [stdout] 280 | fn keyword(text: &str) -> Option<TokenKind> {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `errors` is never read
[INFO] [stdout]   --> crates/monkey-lang/src/parsing/parser.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub struct Parser<'a> {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 66 |     peeker: Peeker<'a>,
[INFO] [stdout] 67 |     errors: Vec<ParseError>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Parser` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]   --> crates/monkey-lang/src/parsing/lexer.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         (self.input_len - self.chars_len()).try_into().unwrap()
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `monkey-lang` (lib) due to 1 previous error; 20 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7d54f6fa6f9d5f1e818ae3ea7c8c0c86001d7bccdde9e48ca796a36ce2a67505", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d54f6fa6f9d5f1e818ae3ea7c8c0c86001d7bccdde9e48ca796a36ce2a67505", kill_on_drop: false }`
[INFO] [stdout] 7d54f6fa6f9d5f1e818ae3ea7c8c0c86001d7bccdde9e48ca796a36ce2a67505
