[INFO] fetching crate rual-core 0.0.4...
[INFO] checking rual-core-0.0.4 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] extracting crate rual-core 0.0.4 into /workspace/builds/worker-90/source
[INFO] validating manifest of crates.io crate rual-core 0.0.4 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-90/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 295cdbb252c2761ce5b8ecb59d45c01743c72b44dc96c2740e0fead4e11d5a66
[INFO] running `Command { std: "docker" "start" "-a" "295cdbb252c2761ce5b8ecb59d45c01743c72b44dc96c2740e0fead4e11d5a66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "295cdbb252c2761ce5b8ecb59d45c01743c72b44dc96c2740e0fead4e11d5a66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "295cdbb252c2761ce5b8ecb59d45c01743c72b44dc96c2740e0fead4e11d5a66", kill_on_drop: false }`
[INFO] [stdout] 295cdbb252c2761ce5b8ecb59d45c01743c72b44dc96c2740e0fead4e11d5a66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6519155b57bc40dd2b8de3d0496f0620e0ffa3180964df62e38029695cfcbcb4
[INFO] running `Command { std: "docker" "start" "-a" "6519155b57bc40dd2b8de3d0496f0620e0ffa3180964df62e38029695cfcbcb4", kill_on_drop: false }`
[INFO] [stderr]     Checking 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Expr`, `Value`, `lexing::Lexer`, `parsing::Parser`, `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: unused imports: `Expr`, `Value`, `lexing::Lexer`, `parsing::Parser`, `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)]` 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]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Unit`
[INFO] [stdout]   --> src/vm/mod.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Unit,
[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: `new`
[INFO] [stdout]   --> src/vm/mod.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn new(parent: &'t Scope) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init`
[INFO] [stdout]   --> src/vm/mod.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn init(parent: Option<&'t Scope>) -> Self {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `empty`
[INFO] [stdout]   --> src/vm/mod.rs:77:12
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn empty() -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `lookup_num`
[INFO] [stdout]    --> src/vm/mod.rs:110:12
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn lookup_num(&self, ident: &str) -> Option<i32> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `lookup_str`
[INFO] [stdout]    --> src/vm/mod.rs:117:12
[INFO] [stdout]     |
[INFO] [stdout] 117 |     pub fn lookup_str(&self, ident: &str) -> Option<String> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `lookup_list`
[INFO] [stdout]    --> src/vm/mod.rs:124:12
[INFO] [stdout]     |
[INFO] [stdout] 124 |     pub fn lookup_list(&self, ident: &str) -> Option<Vec<i32>> {
[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]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Unit`
[INFO] [stdout]   --> src/vm/mod.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Unit,
[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: `new`
[INFO] [stdout]   --> src/vm/mod.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn new(parent: &'t Scope) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init`
[INFO] [stdout]   --> src/vm/mod.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn init(parent: Option<&'t Scope>) -> Self {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `empty`
[INFO] [stdout]   --> src/vm/mod.rs:77:12
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn empty() -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6519155b57bc40dd2b8de3d0496f0620e0ffa3180964df62e38029695cfcbcb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6519155b57bc40dd2b8de3d0496f0620e0ffa3180964df62e38029695cfcbcb4", kill_on_drop: false }`
[INFO] [stdout] 6519155b57bc40dd2b8de3d0496f0620e0ffa3180964df62e38029695cfcbcb4