[INFO] cloning repository https://github.com/sonald/ulang-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sonald/ulang-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsonald%2Fulang-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsonald%2Fulang-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 71a5a9d23b4ec96ab1cc22757fbc49d8a0332d63
[INFO] checking sonald/ulang-rs against try#279ba2cff36a3029611d32ee1b5c82559c565f69 for pr-87316
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsonald%2Fulang-rs" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sonald/ulang-rs on toolchain 279ba2cff36a3029611d32ee1b5c82559c565f69
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+279ba2cff36a3029611d32ee1b5c82559c565f69" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sonald/ulang-rs
[INFO] finished tweaking git repo https://github.com/sonald/ulang-rs
[INFO] tweaked toml for git repo https://github.com/sonald/ulang-rs written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/sonald/ulang-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+279ba2cff36a3029611d32ee1b5c82559c565f69" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com.cnpmjs.org/TheDan64/inkwell`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
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[INFO] [stderr]   Downloaded lalrpop v0.19.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+279ba2cff36a3029611d32ee1b5c82559c565f69" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 212f342b9ab54e65cc0ecd3689d157a6bc9fa39021304c656a38bb8321a3dc2e
[INFO] running `Command { std: "docker" "start" "-a" "212f342b9ab54e65cc0ecd3689d157a6bc9fa39021304c656a38bb8321a3dc2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "212f342b9ab54e65cc0ecd3689d157a6bc9fa39021304c656a38bb8321a3dc2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "212f342b9ab54e65cc0ecd3689d157a6bc9fa39021304c656a38bb8321a3dc2e", kill_on_drop: false }`
[INFO] [stdout] 212f342b9ab54e65cc0ecd3689d157a6bc9fa39021304c656a38bb8321a3dc2e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+279ba2cff36a3029611d32ee1b5c82559c565f69" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd4bd4201cfdc2624712654294835e589e426a0c67cde4dbb018a5bb1b3da4e3
[INFO] running `Command { std: "docker" "start" "-a" "fd4bd4201cfdc2624712654294835e589e426a0c67cde4dbb018a5bb1b3da4e3", kill_on_drop: false }`
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[INFO] [stderr]    Compiling ulang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `cls`
[INFO] [stdout]   --> src/codegen.rs:78:34
[INFO] [stdout]    |
[INFO] [stdout] 78 |                 ast::Term::Class(cls) => {
[INFO] [stdout]    |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_cls`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cls`
[INFO] [stdout]   --> src/codegen.rs:78:34
[INFO] [stdout]    |
[INFO] [stdout] 78 |                 ast::Term::Class(cls) => {
[INFO] [stdout]    |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_cls`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 40s
[INFO] running `Command { std: "docker" "inspect" "fd4bd4201cfdc2624712654294835e589e426a0c67cde4dbb018a5bb1b3da4e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd4bd4201cfdc2624712654294835e589e426a0c67cde4dbb018a5bb1b3da4e3", kill_on_drop: false }`
[INFO] [stdout] fd4bd4201cfdc2624712654294835e589e426a0c67cde4dbb018a5bb1b3da4e3