[INFO] fetching crate xur 0.1.0...
[INFO] testing xur-0.1.0 against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] extracting crate xur 0.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate xur 0.1.0
[INFO] finished tweaking crates.io crate xur 0.1.0
[INFO] tweaked toml for crates.io crate xur 0.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate xur 0.1.0 on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate xur 0.1.0 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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-serde v0.1.2
[INFO] [stderr]   Downloaded tracing-log v0.1.2
[INFO] [stderr]   Downloaded tracing-core v0.1.21
[INFO] [stderr]   Downloaded tracing v0.1.29
[INFO] [stderr]   Downloaded pin-project-lite v0.2.7
[INFO] [stderr]   Downloaded smallvec v1.7.0
[INFO] [stderr]   Downloaded once_cell v1.9.0
[INFO] [stderr]   Downloaded tracing-attributes v0.1.18
[INFO] [stderr]   Downloaded anyhow v1.0.52
[INFO] [stderr]   Downloaded serde v1.0.132
[INFO] [stderr]   Downloaded serde_json v1.0.73
[INFO] [stderr]   Downloaded syn v1.0.84
[INFO] [stderr]   Downloaded libc v0.2.112
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62665cb8be62a7e30b54ea5ed25077689b309658e0b2b4acf178c3f238f3a119
[INFO] running `Command { std: "docker" "start" "-a" "62665cb8be62a7e30b54ea5ed25077689b309658e0b2b4acf178c3f238f3a119", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62665cb8be62a7e30b54ea5ed25077689b309658e0b2b4acf178c3f238f3a119", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62665cb8be62a7e30b54ea5ed25077689b309658e0b2b4acf178c3f238f3a119", kill_on_drop: false }`
[INFO] [stdout] 62665cb8be62a7e30b54ea5ed25077689b309658e0b2b4acf178c3f238f3a119
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb652d987771df90c3380faec6d0a1e0ee12bf1514b6809a56cd25fc209f137f
[INFO] running `Command { std: "docker" "start" "-a" "bb652d987771df90c3380faec6d0a1e0ee12bf1514b6809a56cd25fc209f137f", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.84
[INFO] [stderr]    Compiling serde v1.0.132
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling serde_json v1.0.73
[INFO] [stderr]    Compiling itoa v1.0.1
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling anyhow v1.0.52
[INFO] [stderr]    Compiling once_cell v1.9.0
[INFO] [stderr]    Compiling ryu v1.0.9
[INFO] [stderr]    Compiling tracing-core v0.1.21
[INFO] [stderr]    Compiling sharded-slab v0.1.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling smallvec v1.7.0
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling tracing-log v0.1.2
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling tracing-serde v0.1.2
[INFO] [stderr]    Compiling tracing-attributes v0.1.18
[INFO] [stderr]    Compiling tracing v0.1.29
[INFO] [stderr]    Compiling tracing-subscriber v0.2.25
[INFO] [stderr]    Compiling xur v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::ast::value::Statement::Expr`
[INFO] [stdout]  --> src/ast/parser.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::ast::value::Statement::Expr;
[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 import: `anyhow`
[INFO] [stdout]  --> src/ast/parser.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | use anyhow::{anyhow, bail, Context};
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TokenKind` and `Token`
[INFO] [stdout]  --> src/ast/value.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::lexer::{Token, TokenKind};
[INFO] [stdout]   |                    ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ops::Range`
[INFO] [stdout]  --> src/xurvm/var.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{collections::VecDeque, ops::Range};
[INFO] [stdout]   |                                  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow`
[INFO] [stdout]  --> src/xurvm/var.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | use anyhow::{anyhow, bail, Context};
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/xurvm/vmcore.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow`
[INFO] [stdout]  --> src/xurvm/vmcore.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | use anyhow::{anyhow, bail, Context};
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `info`
[INFO] [stdout]  --> src/xurvm/vmcore.rs:8:22
[INFO] [stdout]   |
[INFO] [stdout] 8 | use tracing::{debug, info};
[INFO] [stdout]   |                      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `xurvm::XurVM`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use xurvm::XurVM;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/xurvm/vmcore.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |               return Ok(Value::Function(fn_ref));
[INFO] [stdout]     |               ---------------------------------- any code following this expression is unreachable
[INFO] [stdout] 113 | /             Ok(Value::create_fn(
[INFO] [stdout] 114 | |                 &format!("__sym_bind_@{}", value_1),
[INFO] [stdout] 115 | |                 1,
[INFO] [stdout] 116 | |                 |env, args| {
[INFO] [stdout] ...   |
[INFO] [stdout] 121 | |                 },
[INFO] [stdout] 122 | |             ))
[INFO] [stdout]     | |______________^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]    --> src/ast/parser.rs:108:39
[INFO] [stdout]     |
[INFO] [stdout] 108 |                 TokenKind::Identifier(id) => {
[INFO] [stdout]     |                                       ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/xurvm/vmcore.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |             x => bail!("Statement {:?} not supported", x),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/xurvm/vmcore.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 138 |             Statement::Expr(e) => self.run_expr(e),
[INFO] [stdout]     |             ------------------ matches some of the same values
[INFO] [stdout] 139 |             Statement::Empty => Ok(Value::None),
[INFO] [stdout]     |             ---------------- matches some of the same values
[INFO] [stdout] 140 |             x => bail!("Statement {:?} not supported", x),
[INFO] [stdout]     |             ^ collectively making this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/xurvm/vmcore.rs:174:21
[INFO] [stdout]     |
[INFO] [stdout] 174 |                 let mut fn_value = self.get_value(*callie)?.get_callable()?;
[INFO] [stdout]     |                     ----^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Boolean` and `None` are never constructed
[INFO] [stdout]  --> src/ast/value.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum LiteralValue {
[INFO] [stdout]   |          ------------ variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 8 |     Boolean(bool),
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 9 |     None,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `LiteralValue` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Plus` and `Dot` are never constructed
[INFO] [stdout]   --> src/lexer/token.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout]  4 | pub enum TokenKind {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 16 |     Plus,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 17 |     Dot,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenKind` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `length` is never read
[INFO] [stdout]   --> src/lexer/token.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Token {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 27 |     pub kind: TokenKind,
[INFO] [stdout] 28 |     pub length: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `nth` and `second` are never used
[INFO] [stdout]   --> src/lexer/tokenizer.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 55 | impl<'a> Tokenizer<'a> {
[INFO] [stdout]    | ---------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 63 |     pub fn nth(&self, i: usize) -> char {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 76 |     pub fn second(&self) -> char {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.65s
[INFO] running `Command { std: "docker" "inspect" "bb652d987771df90c3380faec6d0a1e0ee12bf1514b6809a56cd25fc209f137f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb652d987771df90c3380faec6d0a1e0ee12bf1514b6809a56cd25fc209f137f", kill_on_drop: false }`
[INFO] [stdout] bb652d987771df90c3380faec6d0a1e0ee12bf1514b6809a56cd25fc209f137f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0052ee0fdc4e56a540c8af29732a1f4f164a8d6a52b9fb99030c70b090f7e3fc
[INFO] running `Command { std: "docker" "start" "-a" "0052ee0fdc4e56a540c8af29732a1f4f164a8d6a52b9fb99030c70b090f7e3fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling xur v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::ast::value::Statement::Expr`
[INFO] [stdout]  --> src/ast/parser.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::ast::value::Statement::Expr;
[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 import: `anyhow`
[INFO] [stdout]  --> src/ast/parser.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | use anyhow::{anyhow, bail, Context};
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TokenKind` and `Token`
[INFO] [stdout]  --> src/ast/value.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::lexer::{Token, TokenKind};
[INFO] [stdout]   |                    ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ops::Range`
[INFO] [stdout]  --> src/xurvm/var.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{collections::VecDeque, ops::Range};
[INFO] [stdout]   |                                  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow`
[INFO] [stdout]  --> src/xurvm/var.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | use anyhow::{anyhow, bail, Context};
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/xurvm/vmcore.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow`
[INFO] [stdout]  --> src/xurvm/vmcore.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | use anyhow::{anyhow, bail, Context};
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `info`
[INFO] [stdout]  --> src/xurvm/vmcore.rs:8:22
[INFO] [stdout]   |
[INFO] [stdout] 8 | use tracing::{debug, info};
[INFO] [stdout]   |                      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `xurvm::XurVM`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use xurvm::XurVM;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/xurvm/vmcore.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |               return Ok(Value::Function(fn_ref));
[INFO] [stdout]     |               ---------------------------------- any code following this expression is unreachable
[INFO] [stdout] 113 | /             Ok(Value::create_fn(
[INFO] [stdout] 114 | |                 &format!("__sym_bind_@{}", value_1),
[INFO] [stdout] 115 | |                 1,
[INFO] [stdout] 116 | |                 |env, args| {
[INFO] [stdout] ...   |
[INFO] [stdout] 121 | |                 },
[INFO] [stdout] 122 | |             ))
[INFO] [stdout]     | |______________^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]    --> src/ast/parser.rs:108:39
[INFO] [stdout]     |
[INFO] [stdout] 108 |                 TokenKind::Identifier(id) => {
[INFO] [stdout]     |                                       ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/xurvm/vmcore.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |             x => bail!("Statement {:?} not supported", x),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/xurvm/vmcore.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 138 |             Statement::Expr(e) => self.run_expr(e),
[INFO] [stdout]     |             ------------------ matches some of the same values
[INFO] [stdout] 139 |             Statement::Empty => Ok(Value::None),
[INFO] [stdout]     |             ---------------- matches some of the same values
[INFO] [stdout] 140 |             x => bail!("Statement {:?} not supported", x),
[INFO] [stdout]     |             ^ collectively making this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/xurvm/vmcore.rs:174:21
[INFO] [stdout]     |
[INFO] [stdout] 174 |                 let mut fn_value = self.get_value(*callie)?.get_callable()?;
[INFO] [stdout]     |                     ----^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Boolean` and `None` are never constructed
[INFO] [stdout]  --> src/ast/value.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum LiteralValue {
[INFO] [stdout]   |          ------------ variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 8 |     Boolean(bool),
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 9 |     None,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `LiteralValue` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Plus` and `Dot` are never constructed
[INFO] [stdout]   --> src/lexer/token.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout]  4 | pub enum TokenKind {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 16 |     Plus,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 17 |     Dot,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenKind` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `length` is never read
[INFO] [stdout]   --> src/lexer/token.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Token {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 27 |     pub kind: TokenKind,
[INFO] [stdout] 28 |     pub length: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `nth` and `second` are never used
[INFO] [stdout]   --> src/lexer/tokenizer.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 55 | impl<'a> Tokenizer<'a> {
[INFO] [stdout]    | ---------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 63 |     pub fn nth(&self, i: usize) -> char {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 76 |     pub fn second(&self) -> char {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "0052ee0fdc4e56a540c8af29732a1f4f164a8d6a52b9fb99030c70b090f7e3fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0052ee0fdc4e56a540c8af29732a1f4f164a8d6a52b9fb99030c70b090f7e3fc", kill_on_drop: false }`
[INFO] [stdout] 0052ee0fdc4e56a540c8af29732a1f4f164a8d6a52b9fb99030c70b090f7e3fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d2afbac22471c6be29234dc8a48035742f643a2679a18ef12ea4422fb4f25cf5
[INFO] running `Command { std: "docker" "start" "-a" "d2afbac22471c6be29234dc8a48035742f643a2679a18ef12ea4422fb4f25cf5", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `crate::ast::value::Statement::Expr`
[INFO] [stderr]  --> src/ast/parser.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::ast::value::Statement::Expr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `anyhow`
[INFO] [stderr]  --> src/ast/parser.rs:5:14
[INFO] [stderr]   |
[INFO] [stderr] 5 | use anyhow::{anyhow, bail, Context};
[INFO] [stderr]   |              ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `TokenKind` and `Token`
[INFO] [stderr]  --> src/ast/value.rs:1:20
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::lexer::{Token, TokenKind};
[INFO] [stderr]   |                    ^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ops::Range`
[INFO] [stderr]  --> src/xurvm/var.rs:2:34
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::{collections::VecDeque, ops::Range};
[INFO] [stderr]   |                                  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `anyhow`
[INFO] [stderr]  --> src/xurvm/var.rs:5:14
[INFO] [stderr]   |
[INFO] [stderr] 5 | use anyhow::{anyhow, bail, Context};
[INFO] [stderr]   |              ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::marker::PhantomData`
[INFO] [stderr]  --> src/xurvm/vmcore.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::marker::PhantomData;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `anyhow`
[INFO] [stderr]  --> src/xurvm/vmcore.rs:7:14
[INFO] [stderr]   |
[INFO] [stderr] 7 | use anyhow::{anyhow, bail, Context};
[INFO] [stderr]   |              ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `info`
[INFO] [stderr]  --> src/xurvm/vmcore.rs:8:22
[INFO] [stderr]   |
[INFO] [stderr] 8 | use tracing::{debug, info};
[INFO] [stderr]   |                      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `xurvm::XurVM`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use xurvm::XurVM;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/xurvm/vmcore.rs:113:13
[INFO] [stderr]     |
[INFO] [stderr] 112 |               return Ok(Value::Function(fn_ref));
[INFO] [stderr]     |               ---------------------------------- any code following this expression is unreachable
[INFO] [stderr] 113 | /             Ok(Value::create_fn(
[INFO] [stderr] 114 | |                 &format!("__sym_bind_@{}", value_1),
[INFO] [stderr] 115 | |                 1,
[INFO] [stderr] 116 | |                 |env, args| {
[INFO] [stderr] ...   |
[INFO] [stderr] 121 | |                 },
[INFO] [stderr] 122 | |             ))
[INFO] [stderr]     | |______________^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `id`
[INFO] [stderr]    --> src/ast/parser.rs:108:39
[INFO] [stderr]     |
[INFO] [stderr] 108 |                 TokenKind::Identifier(id) => {
[INFO] [stderr]     |                                       ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/xurvm/vmcore.rs:140:13
[INFO] [stderr]     |
[INFO] [stderr] 140 |             x => bail!("Statement {:?} not supported", x),
[INFO] [stderr]     |             ^ no value can reach this
[INFO] [stderr]     |
[INFO] [stderr] note: multiple earlier patterns match some of the same values
[INFO] [stderr]    --> src/xurvm/vmcore.rs:140:13
[INFO] [stderr]     |
[INFO] [stderr] 138 |             Statement::Expr(e) => self.run_expr(e),
[INFO] [stderr]     |             ------------------ matches some of the same values
[INFO] [stderr] 139 |             Statement::Empty => Ok(Value::None),
[INFO] [stderr]     |             ---------------- matches some of the same values
[INFO] [stderr] 140 |             x => bail!("Statement {:?} not supported", x),
[INFO] [stderr]     |             ^ collectively making this unreachable
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/xurvm/vmcore.rs:174:21
[INFO] [stderr]     |
[INFO] [stderr] 174 |                 let mut fn_value = self.get_value(*callie)?.get_callable()?;
[INFO] [stderr]     |                     ----^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Boolean` and `None` are never constructed
[INFO] [stderr]  --> src/ast/value.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub enum LiteralValue {
[INFO] [stderr]   |          ------------ variants in this enum
[INFO] [stderr] ...
[INFO] [stderr] 8 |     Boolean(bool),
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 9 |     None,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `LiteralValue` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Plus` and `Dot` are never constructed
[INFO] [stderr]   --> src/lexer/token.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr]  4 | pub enum TokenKind {
[INFO] [stderr]    |          --------- variants in this enum
[INFO] [stderr] ...
[INFO] [stderr] 16 |     Plus,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 17 |     Dot,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `TokenKind` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: field `length` is never read
[INFO] [stderr]   --> src/lexer/token.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub struct Token {
[INFO] [stderr]    |            ----- field in this struct
[INFO] [stderr] 27 |     pub kind: TokenKind,
[INFO] [stderr] 28 |     pub length: usize,
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Token` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: methods `nth` and `second` are never used
[INFO] [stderr]   --> src/lexer/tokenizer.rs:63:12
[INFO] [stderr]    |
[INFO] [stderr] 55 | impl<'a> Tokenizer<'a> {
[INFO] [stderr]    | ---------------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 63 |     pub fn nth(&self, i: usize) -> char {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 76 |     pub fn second(&self) -> char {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `xur` (bin "xur" test) generated 17 warnings (run `cargo fix --bin "xur" -p xur --tests` to apply 11 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/xur-f159825769aaae19)
[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" "d2afbac22471c6be29234dc8a48035742f643a2679a18ef12ea4422fb4f25cf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2afbac22471c6be29234dc8a48035742f643a2679a18ef12ea4422fb4f25cf5", kill_on_drop: false }`
[INFO] [stdout] d2afbac22471c6be29234dc8a48035742f643a2679a18ef12ea4422fb4f25cf5
