[INFO] fetching crate rual-core 0.0.4...
[INFO] testing rual-core-0.0.4 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate rual-core 0.0.4 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate rual-core 0.0.4
[INFO] finished tweaking crates.io crate rual-core 0.0.4
[INFO] tweaked toml for crates.io crate rual-core 0.0.4 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rual-core 0.0.4 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc7f39751ac72acc9fe552d2f77b06165419f384acf4262a2d7fb26d08bb69d3
[INFO] running `Command { std: "docker" "start" "-a" "cc7f39751ac72acc9fe552d2f77b06165419f384acf4262a2d7fb26d08bb69d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc7f39751ac72acc9fe552d2f77b06165419f384acf4262a2d7fb26d08bb69d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc7f39751ac72acc9fe552d2f77b06165419f384acf4262a2d7fb26d08bb69d3", kill_on_drop: false }`
[INFO] [stdout] cc7f39751ac72acc9fe552d2f77b06165419f384acf4262a2d7fb26d08bb69d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96fe633d15fcad2078662e723a11ac7fb05af07edc079966c1258592db8d5d75
[INFO] running `Command { std: "docker" "start" "-a" "96fe633d15fcad2078662e723a11ac7fb05af07edc079966c1258592db8d5d75", kill_on_drop: false }`
[INFO] [stderr]    Compiling rual-core v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Punct`
[INFO] [stdout]  --> src/lexing/mod.rs:3:30
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::syntax::{Keyword, Punct, Token, TokenType};
[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: `Expr`, `Value`, `lexing::Lexer`, `parsing::Parser`, and `syntax::Punct`
[INFO] [stdout]  --> src/vm/mod.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 |     expressions::{Expr, Value},
[INFO] [stdout]   |                   ^^^^  ^^^^^
[INFO] [stdout] 3 |     lexing::Lexer,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 4 |     parsing::Parser,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 5 |     syntax::Punct,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BTreeSet`
[INFO] [stdout]  --> src/vm/mod.rs:8:29
[INFO] [stdout]   |
[INFO] [stdout] 8 |     collections::{BTreeMap, BTreeSet},
[INFO] [stdout]   |                             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/vm/mod.rs:208:17
[INFO] [stdout]     |
[INFO] [stdout] 208 |                 _ => unimplemented!("{:?}", &instr),
[INFO] [stdout]     |                 ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/vm/mod.rs:208:17
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 Instruction::Ret => {
[INFO] [stdout]     |                 ---------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 157 |                 Instruction::Jump => match self.stack.pop() {
[INFO] [stdout]     |                 ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 161 |                 Instruction::Push(v) => self.stack.push(v.clone()),
[INFO] [stdout]     |                 -------------------- matches some of the same values
[INFO] [stdout] 162 |                 Instruction::PushLocal(ref ident) => {
[INFO] [stdout]     |                 --------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 208 |                 _ => unimplemented!("{:?}", &instr),
[INFO] [stdout]     |                 ^ ...and 7 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Unit` is never constructed
[INFO] [stdout]   --> src/vm/mod.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub(crate) enum RlValue {
[INFO] [stdout]    |                 ------- variant in this enum
[INFO] [stdout] 20 |     Unit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RlValue` 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: associated functions `new`, `init`, and `empty` are never used
[INFO] [stdout]   --> src/vm/mod.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl<'t> Scope<'t> {
[INFO] [stdout]    | ------------------ associated functions in this implementation
[INFO] [stdout] 66 |     pub fn new(parent: &'t Scope) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     fn init(parent: Option<&'t Scope>) -> Self {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     pub fn empty() -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `lookup_num`, `lookup_str`, and `lookup_list` are never used
[INFO] [stdout]    --> src/vm/mod.rs:110:12
[INFO] [stdout]     |
[INFO] [stdout] 105 | impl<'l> VM<'l> {
[INFO] [stdout]     | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 110 |     pub fn lookup_num(&self, ident: &str) -> Option<i32> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |     pub fn lookup_str(&self, ident: &str) -> Option<String> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |     pub fn lookup_list(&self, ident: &str) -> Option<Vec<i32>> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "96fe633d15fcad2078662e723a11ac7fb05af07edc079966c1258592db8d5d75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96fe633d15fcad2078662e723a11ac7fb05af07edc079966c1258592db8d5d75", kill_on_drop: false }`
[INFO] [stdout] 96fe633d15fcad2078662e723a11ac7fb05af07edc079966c1258592db8d5d75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e223febf5faa4c7811ac916c6fb3326fd8c60b61262b554f9cfa31720e628281
[INFO] running `Command { std: "docker" "start" "-a" "e223febf5faa4c7811ac916c6fb3326fd8c60b61262b554f9cfa31720e628281", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `Punct`
[INFO] [stdout]  --> src/lexing/mod.rs:3:30
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::syntax::{Keyword, Punct, Token, TokenType};
[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: `Expr`, `Value`, `lexing::Lexer`, `parsing::Parser`, and `syntax::Punct`
[INFO] [stdout]  --> src/vm/mod.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 |     expressions::{Expr, Value},
[INFO] [stdout]   |                   ^^^^  ^^^^^
[INFO] [stdout] 3 |     lexing::Lexer,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 4 |     parsing::Parser,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 5 |     syntax::Punct,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BTreeSet`
[INFO] [stdout]  --> src/vm/mod.rs:8:29
[INFO] [stdout]   |
[INFO] [stdout] 8 |     collections::{BTreeMap, BTreeSet},
[INFO] [stdout]   |                             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/vm/mod.rs:208:17
[INFO] [stdout]     |
[INFO] [stdout] 208 |                 _ => unimplemented!("{:?}", &instr),
[INFO] [stdout]     |                 ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/vm/mod.rs:208:17
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 Instruction::Ret => {
[INFO] [stdout]     |                 ---------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 157 |                 Instruction::Jump => match self.stack.pop() {
[INFO] [stdout]     |                 ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 161 |                 Instruction::Push(v) => self.stack.push(v.clone()),
[INFO] [stdout]     |                 -------------------- matches some of the same values
[INFO] [stdout] 162 |                 Instruction::PushLocal(ref ident) => {
[INFO] [stdout]     |                 --------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 208 |                 _ => unimplemented!("{:?}", &instr),
[INFO] [stdout]     |                 ^ ...and 7 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Unit` is never constructed
[INFO] [stdout]   --> src/vm/mod.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub(crate) enum RlValue {
[INFO] [stdout]    |                 ------- variant in this enum
[INFO] [stdout] 20 |     Unit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RlValue` 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: associated functions `new`, `init`, and `empty` are never used
[INFO] [stdout]   --> src/vm/mod.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl<'t> Scope<'t> {
[INFO] [stdout]    | ------------------ associated functions in this implementation
[INFO] [stdout] 66 |     pub fn new(parent: &'t Scope) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     fn init(parent: Option<&'t Scope>) -> Self {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     pub fn empty() -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `lookup_num`, `lookup_str`, and `lookup_list` are never used
[INFO] [stdout]    --> src/vm/mod.rs:110:12
[INFO] [stdout]     |
[INFO] [stdout] 105 | impl<'l> VM<'l> {
[INFO] [stdout]     | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 110 |     pub fn lookup_num(&self, ident: &str) -> Option<i32> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |     pub fn lookup_str(&self, ident: &str) -> Option<String> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |     pub fn lookup_list(&self, ident: &str) -> Option<Vec<i32>> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rual-core v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Expr`, `Value`, `lexing::Lexer`, `parsing::Parser`, and `syntax::Punct`
[INFO] [stdout]  --> src/vm/mod.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 |     expressions::{Expr, Value},
[INFO] [stdout]   |                   ^^^^  ^^^^^
[INFO] [stdout] 3 |     lexing::Lexer,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 4 |     parsing::Parser,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 5 |     syntax::Punct,
[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: `BTreeSet`
[INFO] [stdout]  --> src/vm/mod.rs:8:29
[INFO] [stdout]   |
[INFO] [stdout] 8 |     collections::{BTreeMap, BTreeSet},
[INFO] [stdout]   |                             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/vm/mod.rs:208:17
[INFO] [stdout]     |
[INFO] [stdout] 208 |                 _ => unimplemented!("{:?}", &instr),
[INFO] [stdout]     |                 ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/vm/mod.rs:208:17
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 Instruction::Ret => {
[INFO] [stdout]     |                 ---------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 157 |                 Instruction::Jump => match self.stack.pop() {
[INFO] [stdout]     |                 ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 161 |                 Instruction::Push(v) => self.stack.push(v.clone()),
[INFO] [stdout]     |                 -------------------- matches some of the same values
[INFO] [stdout] 162 |                 Instruction::PushLocal(ref ident) => {
[INFO] [stdout]     |                 --------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 208 |                 _ => unimplemented!("{:?}", &instr),
[INFO] [stdout]     |                 ^ ...and 7 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Unit` is never constructed
[INFO] [stdout]   --> src/vm/mod.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub(crate) enum RlValue {
[INFO] [stdout]    |                 ------- variant in this enum
[INFO] [stdout] 20 |     Unit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RlValue` 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: associated functions `new`, `init`, and `empty` are never used
[INFO] [stdout]   --> src/vm/mod.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl<'t> Scope<'t> {
[INFO] [stdout]    | ------------------ associated functions in this implementation
[INFO] [stdout] 66 |     pub fn new(parent: &'t Scope) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     fn init(parent: Option<&'t Scope>) -> Self {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     pub fn empty() -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]  --> src/vm/tests.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn exec(instrs: &[Instruction]) -> VM {
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^     ^^ the same lifetime is hidden here
[INFO] [stdout]   |                 |
[INFO] [stdout]   |                 the lifetime is elided here
[INFO] [stdout]   |
[INFO] [stdout]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn exec(instrs: &[Instruction]) -> VM<'_> {
[INFO] [stdout]   |                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "e223febf5faa4c7811ac916c6fb3326fd8c60b61262b554f9cfa31720e628281", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e223febf5faa4c7811ac916c6fb3326fd8c60b61262b554f9cfa31720e628281", kill_on_drop: false }`
[INFO] [stdout] e223febf5faa4c7811ac916c6fb3326fd8c60b61262b554f9cfa31720e628281
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5c51bbb11fea90e42c383c9f63c235c589bf8aa52e242021dd7c8e2c2eb427f6
[INFO] running `Command { std: "docker" "start" "-a" "5c51bbb11fea90e42c383c9f63c235c589bf8aa52e242021dd7c8e2c2eb427f6", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Punct`
[INFO] [stderr]  --> src/lexing/mod.rs:3:30
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::syntax::{Keyword, Punct, Token, TokenType};
[INFO] [stderr]   |                              ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Expr`, `Value`, `lexing::Lexer`, `parsing::Parser`, and `syntax::Punct`
[INFO] [stderr]  --> src/vm/mod.rs:2:19
[INFO] [stderr]   |
[INFO] [stderr] 2 |     expressions::{Expr, Value},
[INFO] [stderr]   |                   ^^^^  ^^^^^
[INFO] [stderr] 3 |     lexing::Lexer,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 4 |     parsing::Parser,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 5 |     syntax::Punct,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BTreeSet`
[INFO] [stderr]  --> src/vm/mod.rs:8:29
[INFO] [stderr]   |
[INFO] [stderr] 8 |     collections::{BTreeMap, BTreeSet},
[INFO] [stderr]   |                             ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/vm/mod.rs:208:17
[INFO] [stderr]     |
[INFO] [stderr] 208 |                 _ => unimplemented!("{:?}", &instr),
[INFO] [stderr]     |                 ^ no value can reach this
[INFO] [stderr]     |
[INFO] [stderr] note: multiple earlier patterns match some of the same values
[INFO] [stderr]    --> src/vm/mod.rs:208:17
[INFO] [stderr]     |
[INFO] [stderr] 147 |                 Instruction::Ret => {
[INFO] [stderr]     |                 ---------------- matches some of the same values
[INFO] [stderr] ...
[INFO] [stderr] 157 |                 Instruction::Jump => match self.stack.pop() {
[INFO] [stderr]     |                 ----------------- matches some of the same values
[INFO] [stderr] ...
[INFO] [stderr] 161 |                 Instruction::Push(v) => self.stack.push(v.clone()),
[INFO] [stderr]     |                 -------------------- matches some of the same values
[INFO] [stderr] 162 |                 Instruction::PushLocal(ref ident) => {
[INFO] [stderr]     |                 --------------------------------- matches some of the same values
[INFO] [stderr] ...
[INFO] [stderr] 208 |                 _ => unimplemented!("{:?}", &instr),
[INFO] [stderr]     |                 ^ ...and 7 other patterns collectively make this unreachable
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `Unit` is never constructed
[INFO] [stderr]   --> src/vm/mod.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub(crate) enum RlValue {
[INFO] [stderr]    |                 ------- variant in this enum
[INFO] [stderr] 20 |     Unit,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `RlValue` 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: associated functions `new`, `init`, and `empty` are never used
[INFO] [stderr]   --> src/vm/mod.rs:66:12
[INFO] [stderr]    |
[INFO] [stderr] 65 | impl<'t> Scope<'t> {
[INFO] [stderr]    | ------------------ associated functions in this implementation
[INFO] [stderr] 66 |     pub fn new(parent: &'t Scope) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 70 |     fn init(parent: Option<&'t Scope>) -> Self {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 77 |     pub fn empty() -> Self {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `lookup_num`, `lookup_str`, and `lookup_list` are never used
[INFO] [stderr]    --> src/vm/mod.rs:110:12
[INFO] [stderr]     |
[INFO] [stderr] 105 | impl<'l> VM<'l> {
[INFO] [stderr]     | --------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 110 |     pub fn lookup_num(&self, ident: &str) -> Option<i32> {
[INFO] [stderr]     |            ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 117 |     pub fn lookup_str(&self, ident: &str) -> Option<String> {
[INFO] [stderr]     |            ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 124 |     pub fn lookup_list(&self, ident: &str) -> Option<Vec<i32>> {
[INFO] [stderr]     |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rual-core` (lib) generated 7 warnings (run `cargo fix --lib -p rual-core` to apply 3 suggestions)
[INFO] [stderr] warning: unused imports: `Expr`, `Value`, `lexing::Lexer`, `parsing::Parser`, and `syntax::Punct`
[INFO] [stderr]  --> src/vm/mod.rs:2:19
[INFO] [stderr]   |
[INFO] [stderr] 2 |     expressions::{Expr, Value},
[INFO] [stderr]   |                   ^^^^  ^^^^^
[INFO] [stderr] 3 |     lexing::Lexer,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 4 |     parsing::Parser,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 5 |     syntax::Punct,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]  --> src/vm/tests.rs:3:17
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn exec(instrs: &[Instruction]) -> VM {
[INFO] [stderr]   |                 ^^^^^^^^^^^^^^     ^^ the same lifetime is hidden here
[INFO] [stderr]   |                 |
[INFO] [stderr]   |                 the lifetime is elided here
[INFO] [stderr]   |
[INFO] [stderr]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn exec(instrs: &[Instruction]) -> VM<'_> {
[INFO] [stderr]   |                                      ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `rual-core` (lib test) generated 6 warnings (4 duplicates) (run `cargo fix --lib -p rual-core --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rual_core-8fb415c635611cce)
[INFO] [stdout] 
[INFO] [stdout] running 31 tests
[INFO] [stdout] test lexing::tests::func ... ok
[INFO] [stdout] test lexing::tests::hi_ord_func ... ok
[INFO] [stdout] test lexing::tests::lists ... ok
[INFO] [stdout] test lexing::tests::new_line ... ok
[INFO] [stdout] test lexing::tests::maps ... ok
[INFO] [stdout] test lexing::tests::discard ... ok
[INFO] [stdout] test lexing::tests::nums ... ok
[INFO] [stdout] test lexing::tests::strings ... ok
[INFO] [stdout] test lexing::tests::single_comment ... ok
[INFO] [stdout] test parsing::tests::calc_assignment ... ok
[INFO] [stdout] test lexing::tests::tuples ... ok
[INFO] [stdout] test lexing::tests::sub_punct ... ok
[INFO] [stdout] test parsing::tests::a_couple_of_declarations ... ok
[INFO] [stdout] test parsing::tests::function_invocation ... ok
[INFO] [stdout] test parsing::tests::function_declaration ... ok
[INFO] [stdout] test parsing::tests::simple_string_declaration ... ok
[INFO] [stdout] test parsing::tests::parameterless_function_declaration ... ok
[INFO] [stdout] test parsing::tests::simple_num_declaration ... ok
[INFO] [stdout] test vm::compilation::tests::parameterless_function_declaration_and_invocation ... ok
[INFO] [stdout] test vm::compilation::tests::range_declaration ... ok
[INFO] [stdout] test vm::compilation::tests::simple_numeric_declaration ... ok
[INFO] [stdout] test vm::compilation::tests::string_declaration ... ok
[INFO] [stdout] test vm::tests::parameterless_function_declaration_and_invocation ... ok
[INFO] [stdout] test vm::tests::range_declaration ... ok
[INFO] [stdout] test vm::tests::function_declaration_and_invocation ... ok
[INFO] [stdout] test vm::tests::simple_numeric_declaration ... ok
[INFO] [stdout] test vm::tests::string_declaration ... ok
[INFO] [stdout] test parsing::tests::function_invocation_assignment ... ok
[INFO] [stdout] test parsing::tests::range_declarations ... ok
[INFO] [stdout] test vm::compilation::tests::function_declaration_and_invocation ... ok
[INFO] [stdout] test lexing::tests::a_couple_declarations ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 31 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rual_core
[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" "5c51bbb11fea90e42c383c9f63c235c589bf8aa52e242021dd7c8e2c2eb427f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c51bbb11fea90e42c383c9f63c235c589bf8aa52e242021dd7c8e2c2eb427f6", kill_on_drop: false }`
[INFO] [stdout] 5c51bbb11fea90e42c383c9f63c235c589bf8aa52e242021dd7c8e2c2eb427f6