[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] checking kgtkr/stack-vm-rs against try#26ad8a85dc4eed299af809e52f278da81e284602 for pr-138458
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkgtkr%2Fstack-vm-rs" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kgtkr/stack-vm-rs on toolchain 26ad8a85dc4eed299af809e52f278da81e284602
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+26ad8a85dc4eed299af809e52f278da81e284602" "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-3-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" "+26ad8a85dc4eed299af809e52f278da81e284602" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+26ad8a85dc4eed299af809e52f278da81e284602" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb3d07894b6f34ab1d7b5adf56412aff476190aa7186ee2b5f1e9a0790751adc
[INFO] running `Command { std: "docker" "start" "-a" "eb3d07894b6f34ab1d7b5adf56412aff476190aa7186ee2b5f1e9a0790751adc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb3d07894b6f34ab1d7b5adf56412aff476190aa7186ee2b5f1e9a0790751adc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb3d07894b6f34ab1d7b5adf56412aff476190aa7186ee2b5f1e9a0790751adc", kill_on_drop: false }`
[INFO] [stdout] eb3d07894b6f34ab1d7b5adf56412aff476190aa7186ee2b5f1e9a0790751adc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+26ad8a85dc4eed299af809e52f278da81e284602" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f310d09d4b4309b82b1bafcad2f90f7feb218f944a4f422ff95d41e74c6b6c1
[INFO] running `Command { std: "docker" "start" "-a" "5f310d09d4b4309b82b1bafcad2f90f7feb218f944a4f422ff95d41e74c6b6c1", kill_on_drop: false }`
[INFO] [stderr]     Checking 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] [stderr] error: could not compile `stack-vm-rs` (bin "stack-vm-rs"); 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to parse process output: `/opt/rustwide/rustup-home/toolchains/26ad8a85dc4eed299af809e52f278da81e284602/bin/rustc --crate-name stack_vm_rs --edition=2018 src/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=69fad03f1104e900 -C extra-filename=-38d286194d52555c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints=forbid` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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: 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5f310d09d4b4309b82b1bafcad2f90f7feb218f944a4f422ff95d41e74c6b6c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f310d09d4b4309b82b1bafcad2f90f7feb218f944a4f422ff95d41e74c6b6c1", kill_on_drop: false }`
[INFO] [stdout] 5f310d09d4b4309b82b1bafcad2f90f7feb218f944a4f422ff95d41e74c6b6c1