[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 try#a7ce54db9b096bd1098d07c645b489195a667c9f for pr-137940
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkgtkr%2Fstack-vm-rs" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kgtkr/stack-vm-rs on toolchain a7ce54db9b096bd1098d07c645b489195a667c9f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-1-tc2/source/Cargo.toml
[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" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e8c1ab20033da040235c0359923f9b4b653ab883152703970f9da9e8e2e1e46
[INFO] running `Command { std: "docker" "start" "-a" "7e8c1ab20033da040235c0359923f9b4b653ab883152703970f9da9e8e2e1e46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e8c1ab20033da040235c0359923f9b4b653ab883152703970f9da9e8e2e1e46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e8c1ab20033da040235c0359923f9b4b653ab883152703970f9da9e8e2e1e46", kill_on_drop: false }`
[INFO] [stdout] 7e8c1ab20033da040235c0359923f9b4b653ab883152703970f9da9e8e2e1e46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d96d28e8e7947c3192649319c44dd822d8b359bd0441580d1c7b401cf723be6
[INFO] running `Command { std: "docker" "start" "-a" "4d96d28e8e7947c3192649319c44dd822d8b359bd0441580d1c7b401cf723be6", 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)]` 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)]` 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)]` 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: multiple variants are never constructed
[INFO] [stdout]   --> src/llang.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub enum Op {
[INFO] [stdout]    |          -- variants in this enum
[INFO] [stdout] 42 |     Call(usize),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 43 |     LocalLoad(usize),
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 44 |     LocalStore(usize),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 45 |     ArgLoad(usize),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 46 |     ArgStore(usize),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 47 |     Const(usize),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 48 |     Add,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 49 |     Mod,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 50 |     Eq,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 51 |     JumpIf(usize),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 52 |     Jump(usize),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 53 |     PopR(usize),
[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] 
[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: 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: multiple variants are never constructed
[INFO] [stdout]    --> src/vm.rs:161:5
[INFO] [stdout]     |
[INFO] [stdout] 160 | pub enum Cmd {
[INFO] [stdout]     |          --- variants in this enum
[INFO] [stdout] 161 |     Frame(usize),
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 162 |     Ret,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 163 |     Call(usize),
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 164 |     LocalLoad(usize),
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 165 |     LocalStore(usize),
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 166 |     ArgLoad(usize),
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 167 |     ArgStore(usize),
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 168 |     PopR(usize),
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 169 |     Const(usize),
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 170 |     Add,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 171 |     Mod,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 172 |     Entry(usize),
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 173 |     Eq,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 174 |     JumpIf(usize),
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 175 |     Jump(usize),
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Cmd` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "4d96d28e8e7947c3192649319c44dd822d8b359bd0441580d1c7b401cf723be6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d96d28e8e7947c3192649319c44dd822d8b359bd0441580d1c7b401cf723be6", kill_on_drop: false }`
[INFO] [stdout] 4d96d28e8e7947c3192649319c44dd822d8b359bd0441580d1c7b401cf723be6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: mkdir /var/lib/docker/overlay2/234fe04f0a9a317247d438d10b7eb3a969c6b8e147daa0e480715c74afb3f0f5-init: no space left on device