[INFO] cloning repository https://github.com/kgtkr/stack-vm-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kgtkr/stack-vm-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkgtkr%2Fstack-vm-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkgtkr%2Fstack-vm-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d1822e95b4c2f48fc1d45f30b10b011f546d7947
[INFO] testing kgtkr/stack-vm-rs against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkgtkr%2Fstack-vm-rs" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kgtkr/stack-vm-rs
[INFO] finished tweaking git repo https://github.com/kgtkr/stack-vm-rs
[INFO] tweaked toml for git repo https://github.com/kgtkr/stack-vm-rs written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kgtkr/stack-vm-rs 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 git repo https://github.com/kgtkr/stack-vm-rs 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 770ae839d69bece0c77d0972cdb51ce63050b3cbe5e033b4bc04407ada8a880f
[INFO] running `Command { std: "docker" "start" "-a" "770ae839d69bece0c77d0972cdb51ce63050b3cbe5e033b4bc04407ada8a880f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "770ae839d69bece0c77d0972cdb51ce63050b3cbe5e033b4bc04407ada8a880f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "770ae839d69bece0c77d0972cdb51ce63050b3cbe5e033b4bc04407ada8a880f", kill_on_drop: false }`
[INFO] [stdout] 770ae839d69bece0c77d0972cdb51ce63050b3cbe5e033b4bc04407ada8a880f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 535a247ed4b3da8da4b953d73907c49f296922a73dca8a0d5d77f50f10a83925
[INFO] running `Command { std: "docker" "start" "-a" "535a247ed4b3da8da4b953d73907c49f296922a73dca8a0d5d77f50f10a83925", kill_on_drop: false }`
[INFO] [stderr]    Compiling stack-vm-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `VM`
[INFO] [stdout]  --> src/llang.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::vm::{Cmd, VM};
[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 variable: `entry`
[INFO] [stdout]    --> src/llang.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |         let entry = gen.push(LLangCmd::Entry(FnIndex(self.entry)));
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_entry`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `LLangCmd` is never used
[INFO] [stdout]  --> src/llang.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum LLangCmd {
[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 `FnIndex` is never constructed
[INFO] [stdout]   --> src/llang.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct FnIndex(usize);
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RelativeFnIndex` is never constructed
[INFO] [stdout]   --> src/llang.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct RelativeFnIndex(FnIndex, usize);
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LLang` is never constructed
[INFO] [stdout]   --> src/llang.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct LLang {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Func` is never constructed
[INFO] [stdout]   --> src/llang.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct Func {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Op` is never used
[INFO] [stdout]   --> src/llang.rs:41:10
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub enum Op {
[INFO] [stdout]    |          ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CmdGen` is never constructed
[INFO] [stdout]   --> src/llang.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct CmdGen {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push`, and `to_cmds` are never used
[INFO] [stdout]   --> src/llang.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl CmdGen {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 63 |     fn new() -> CmdGen {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     fn push(&mut self, cmd: LLangCmd) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn to_cmds(self) -> Vec<Cmd> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `convert` is never used
[INFO] [stdout]    --> src/llang.rs:103:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | impl LLang {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] 103 |     fn convert(&self) -> Vec<Cmd> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `convert` is never used
[INFO] [stdout]    --> src/llang.rs:114:8
[INFO] [stdout]     |
[INFO] [stdout] 113 | impl Func {
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] 114 |     fn convert(&self, fn_index: usize, gen: &mut CmdGen) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `convert` is never used
[INFO] [stdout]    --> src/llang.rs:124:8
[INFO] [stdout]     |
[INFO] [stdout] 123 | impl Op {
[INFO] [stdout]     | ------- method in this implementation
[INFO] [stdout] 124 |     fn convert(&self, fn_index: usize, gen: &mut CmdGen) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VM` is never constructed
[INFO] [stdout]  --> src/vm.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct VM {
[INFO] [stdout]   |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/vm.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl VM {
[INFO] [stdout]    | ------- associated items in this implementation
[INFO] [stdout] 14 |     pub fn new(program: Vec<Cmd>) -> VM {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub fn run(&mut self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn push(&mut self, x: usize) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn peak(&self) -> usize {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     fn pop(&mut self) -> usize {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn debug_state(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |     fn run_cmd(&mut self) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Cmd` is never used
[INFO] [stdout]    --> src/vm.rs:160:10
[INFO] [stdout]     |
[INFO] [stdout] 160 | pub enum Cmd {
[INFO] [stdout]     |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "535a247ed4b3da8da4b953d73907c49f296922a73dca8a0d5d77f50f10a83925", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "535a247ed4b3da8da4b953d73907c49f296922a73dca8a0d5d77f50f10a83925", kill_on_drop: false }`
[INFO] [stdout] 535a247ed4b3da8da4b953d73907c49f296922a73dca8a0d5d77f50f10a83925
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] fb15b49429275fd8b3e17f66fd91cc2ccb70256d24375d66b312a4f640cb5cdd
[INFO] running `Command { std: "docker" "start" "-a" "fb15b49429275fd8b3e17f66fd91cc2ccb70256d24375d66b312a4f640cb5cdd", kill_on_drop: false }`
[INFO] [stderr]    Compiling stack-vm-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `entry`
[INFO] [stdout]    --> src/llang.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |         let entry = gen.push(LLangCmd::Entry(FnIndex(self.entry)));
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_entry`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `LocalLoad`, `LocalStore`, `ArgStore`, and `Add` are never constructed
[INFO] [stdout]   --> src/llang.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub enum Op {
[INFO] [stdout]    |          -- variants in this enum
[INFO] [stdout] 42 |     Call(usize),
[INFO] [stdout] 43 |     LocalLoad(usize),
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 44 |     LocalStore(usize),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 45 |     ArgLoad(usize),
[INFO] [stdout] 46 |     ArgStore(usize),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 47 |     Const(usize),
[INFO] [stdout] 48 |     Add,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Op` 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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "fb15b49429275fd8b3e17f66fd91cc2ccb70256d24375d66b312a4f640cb5cdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb15b49429275fd8b3e17f66fd91cc2ccb70256d24375d66b312a4f640cb5cdd", kill_on_drop: false }`
[INFO] [stdout] fb15b49429275fd8b3e17f66fd91cc2ccb70256d24375d66b312a4f640cb5cdd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] aa0695576bac0188d434cbe607181062a8ed8fed7992abf4dae622119ac00f44
[INFO] running `Command { std: "docker" "start" "-a" "aa0695576bac0188d434cbe607181062a8ed8fed7992abf4dae622119ac00f44", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `entry`
[INFO] [stderr]    --> src/llang.rs:105:13
[INFO] [stderr]     |
[INFO] [stderr] 105 |         let entry = gen.push(LLangCmd::Entry(FnIndex(self.entry)));
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_entry`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variants `LocalLoad`, `LocalStore`, `ArgStore`, and `Add` are never constructed
[INFO] [stderr]   --> src/llang.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 41 | pub enum Op {
[INFO] [stderr]    |          -- variants in this enum
[INFO] [stderr] 42 |     Call(usize),
[INFO] [stderr] 43 |     LocalLoad(usize),
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 44 |     LocalStore(usize),
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 45 |     ArgLoad(usize),
[INFO] [stderr] 46 |     ArgStore(usize),
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 47 |     Const(usize),
[INFO] [stderr] 48 |     Add,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Op` 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: `stack-vm-rs` (bin "stack-vm-rs" test) generated 2 warnings (run `cargo fix --bin "stack-vm-rs" -p stack-vm-rs --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/stack_vm_rs-268b2ac2a4e0e40b)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test llang::test ... ok
[INFO] [stdout] test vm::test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "aa0695576bac0188d434cbe607181062a8ed8fed7992abf4dae622119ac00f44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa0695576bac0188d434cbe607181062a8ed8fed7992abf4dae622119ac00f44", kill_on_drop: false }`
[INFO] [stdout] aa0695576bac0188d434cbe607181062a8ed8fed7992abf4dae622119ac00f44