[INFO] cloning repository https://github.com/ebobrow/rompiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ebobrow/rompiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Febobrow%2Frompiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Febobrow%2Frompiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 804d7ee11e1ff0c35092f796e9ef0099f4d64170
[INFO] checking ebobrow/rompiler against master#3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0 for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Febobrow%2Frompiler" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ebobrow/rompiler
[INFO] finished tweaking git repo https://github.com/ebobrow/rompiler
[INFO] tweaked toml for git repo https://github.com/ebobrow/rompiler written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ebobrow/rompiler on toolchain 3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ebobrow/rompiler 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" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 168409b1ebfd31142c38e7679f5fa969782b355866367b9bf6f2161f7a5f5f64
[INFO] running `Command { std: "docker" "start" "-a" "168409b1ebfd31142c38e7679f5fa969782b355866367b9bf6f2161f7a5f5f64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "168409b1ebfd31142c38e7679f5fa969782b355866367b9bf6f2161f7a5f5f64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "168409b1ebfd31142c38e7679f5fa969782b355866367b9bf6f2161f7a5f5f64", kill_on_drop: false }`
[INFO] [stdout] 168409b1ebfd31142c38e7679f5fa969782b355866367b9bf6f2161f7a5f5f64
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb18e0393e93187ca4fc94b24737ee0effb4a73b981417bf5bffab1c43897650
[INFO] running `Command { std: "docker" "start" "-a" "eb18e0393e93187ca4fc94b24737ee0effb4a73b981417bf5bffab1c43897650", kill_on_drop: false }`
[INFO] [stderr]     Checking rompiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `LetExpr`
[INFO] [stdout]  --> src/compiler.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 |     parser::{Expr, LetExpr, Node},
[INFO] [stdout]   |                    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `LetExpr`
[INFO] [stdout]  --> src/compiler.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 |     parser::{Expr, LetExpr, Node},
[INFO] [stdout]   |                    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Reg` is more private than the item `Compiler::bindings`
[INFO] [stdout]   --> src/compiler.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub bindings: HashMap<String, Reg>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ field `Compiler::bindings` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Reg` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/compiler.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Reg {
[INFO] [stdout]    | ^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `RBX` is never constructed
[INFO] [stdout]   --> src/compiler.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Reg {
[INFO] [stdout]    |      --- variant in this enum
[INFO] [stdout] 15 |     RAX,
[INFO] [stdout] 16 |     RBX,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Reg` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Reg` is more private than the item `Compiler::bindings`
[INFO] [stdout]   --> src/compiler.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub bindings: HashMap<String, Reg>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ field `Compiler::bindings` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Reg` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/compiler.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Reg {
[INFO] [stdout]    | ^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `RBX` is never constructed
[INFO] [stdout]   --> src/compiler.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Reg {
[INFO] [stdout]    |      --- variant in this enum
[INFO] [stdout] 15 |     RAX,
[INFO] [stdout] 16 |     RBX,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Reg` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "eb18e0393e93187ca4fc94b24737ee0effb4a73b981417bf5bffab1c43897650", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb18e0393e93187ca4fc94b24737ee0effb4a73b981417bf5bffab1c43897650", kill_on_drop: false }`
[INFO] [stdout] eb18e0393e93187ca4fc94b24737ee0effb4a73b981417bf5bffab1c43897650