[INFO] cloning repository https://github.com/asukaminato0721/hindley-milner
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/asukaminato0721/hindley-milner" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasukaminato0721%2Fhindley-milner", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasukaminato0721%2Fhindley-milner'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e450703090d654181fd36901aa8cbad4b8eabfd3
[INFO] checking asukaminato0721/hindley-milner against 36e0a7eac2392bdd51fab6e7ff1d8c0e42d33bf6 for pr-160581
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasukaminato0721%2Fhindley-milner" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/asukaminato0721/hindley-milner
[INFO] finished tweaking git repo https://github.com/asukaminato0721/hindley-milner
[INFO] tweaked toml for git repo https://github.com/asukaminato0721/hindley-milner written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/asukaminato0721/hindley-milner on toolchain 36e0a7eac2392bdd51fab6e7ff1d8c0e42d33bf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36e0a7eac2392bdd51fab6e7ff1d8c0e42d33bf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/asukaminato0721/hindley-milner 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" "+36e0a7eac2392bdd51fab6e7ff1d8c0e42d33bf6" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking asukaminato0721/hindley-milner against 36e0a7eac2392bdd51fab6e7ff1d8c0e42d33bf6 for pr-160581
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasukaminato0721%2Fhindley-milner" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/asukaminato0721/hindley-milner
[INFO] finished tweaking git repo https://github.com/asukaminato0721/hindley-milner
[INFO] tweaked toml for git repo https://github.com/asukaminato0721/hindley-milner written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/asukaminato0721/hindley-milner on toolchain 36e0a7eac2392bdd51fab6e7ff1d8c0e42d33bf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36e0a7eac2392bdd51fab6e7ff1d8c0e42d33bf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/asukaminato0721/hindley-milner 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" "+36e0a7eac2392bdd51fab6e7ff1d8c0e42d33bf6" "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-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 2d9d7d0d01c744946f67271dac6cd0bb55b3a61a7b72cf52cf881c0f0d8826d4
[INFO] running `Command { std: "docker" "start" "2d9d7d0d01c744946f67271dac6cd0bb55b3a61a7b72cf52cf881c0f0d8826d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d9d7d0d01c744946f67271dac6cd0bb55b3a61a7b72cf52cf881c0f0d8826d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "2d9d7d0d01c744946f67271dac6cd0bb55b3a61a7b72cf52cf881c0f0d8826d4" "/opt/rustwide/cargo-home/bin/cargo" "+36e0a7eac2392bdd51fab6e7ff1d8c0e42d33bf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d9d7d0d01c744946f67271dac6cd0bb55b3a61a7b72cf52cf881c0f0d8826d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "2d9d7d0d01c744946f67271dac6cd0bb55b3a61a7b72cf52cf881c0f0d8826d4" "/opt/rustwide/cargo-home/bin/cargo" "+36e0a7eac2392bdd51fab6e7ff1d8c0e42d33bf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking hindley-milner v0.1.0 (/opt/rustwide/workdir/hindley-milner)
[INFO] [stderr]     Checking ski v0.1.0 (/opt/rustwide/workdir/ski)
[INFO] [stderr]     Checking a-algo v0.1.0 (/opt/rustwide/workdir/a-algo)
[INFO] [stderr]     Checking lambda v0.1.0 (/opt/rustwide/workdir/lambda)
[INFO] [stdout] warning: enum `Combinator` is never used
[INFO] [stdout]  --> a-algo/src/main.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum Combinator {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Expr` is never used
[INFO] [stdout]   --> a-algo/src/main.rs:13:6
[INFO] [stdout]    |
[INFO] [stdout] 13 | enum Expr {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `app` is never used
[INFO] [stdout]   --> a-algo/src/main.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn app(e1: Expr, e2: Expr) -> Expr {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `contains_var` is never used
[INFO] [stdout]   --> a-algo/src/main.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn contains_var(expr: &Expr, var_name: &str) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `abstract_expr` is never used
[INFO] [stdout]   --> a-algo/src/main.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn abstract_expr(expr: &Expr, var_name: &str) -> Expr {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `crate::ski`
[INFO] [stdout]  --> ski/src/parser.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::ski::Expr;
[INFO] [stdout]   |            ^^^ could not find `ski` in the crate root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `ski`
[INFO] [stdout]  --> ski/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use ski::Expr;
[INFO] [stdout]   |     ^^^ use of unresolved module or unlinked crate `ski`
[INFO] [stdout]   |
[INFO] [stdout] help: to make use of source file ski/src/ski.rs, use `mod ski` in this file to declare the module
[INFO] [stdout]   |
[INFO] [stdout] 3 + mod ski;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `crate::ski`
[INFO] [stdout]  --> ski/src/parser.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::ski::Expr;
[INFO] [stdout]   |            ^^^ could not find `ski` in the crate root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `ski`
[INFO] [stdout]  --> ski/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use ski::Expr;
[INFO] [stdout]   |     ^^^ use of unresolved module or unlinked crate `ski`
[INFO] [stdout]   |
[INFO] [stdout] help: to make use of source file ski/src/ski.rs, use `mod ski` in this file to declare the module
[INFO] [stdout]   |
[INFO] [stdout] 3 + mod ski;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ski` (bin "ski") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `ski` (bin "ski" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "2d9d7d0d01c744946f67271dac6cd0bb55b3a61a7b72cf52cf881c0f0d8826d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d9d7d0d01c744946f67271dac6cd0bb55b3a61a7b72cf52cf881c0f0d8826d4", kill_on_drop: false }`
[INFO] [stdout] 2d9d7d0d01c744946f67271dac6cd0bb55b3a61a7b72cf52cf881c0f0d8826d4
