[INFO] cloning repository https://github.com/robinedwards/foobar
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/robinedwards/foobar" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobinedwards%2Ffoobar"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobinedwards%2Ffoobar'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a69c4c9b528f35d52292fe2401617ea03e8cb842
[INFO] checking robinedwards/foobar against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobinedwards%2Ffoobar" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/robinedwards/foobar on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/robinedwards/foobar
[INFO] finished tweaking git repo https://github.com/robinedwards/foobar
[INFO] tweaked toml for git repo https://github.com/robinedwards/foobar written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/robinedwards/foobar already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7f5cf4cbd02a86251f7124b2500ff8b37627a8ea37fd64846441a25957a1f002
[INFO] running `"docker" "start" "-a" "7f5cf4cbd02a86251f7124b2500ff8b37627a8ea37fd64846441a25957a1f002"`
[INFO] [stderr]     Checking foobar v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `environment`
[INFO] [stderr]   --> tests/tests.rs:14:15
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let (ast, environment) = eval_code("(+ 1 1)");
[INFO] [stderr]    |               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_environment`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `environment`
[INFO] [stderr]   --> tests/tests.rs:24:15
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let (ast, environment) = eval_code("(define r 1)");
[INFO] [stderr]    |               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_environment`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `environment`
[INFO] [stderr]   --> tests/tests.rs:34:15
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let (ast, environment) = eval_code("(begin (- 3 2) (+ 1 0))");
[INFO] [stderr]    |               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_environment`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `environment`
[INFO] [stderr]   --> tests/tests.rs:44:15
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let (ast, environment) = eval_code("(begin (define r 2) (+ 1 r))");
[INFO] [stderr]    |               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_environment`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `environment`
[INFO] [stderr]   --> tests/tests.rs:54:15
[INFO] [stderr]    |
[INFO] [stderr] 54 |     let (ast, environment) = eval_code("(lambda (a b) (+ a b))");
[INFO] [stderr]    |               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_environment`
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `"docker" "inspect" "7f5cf4cbd02a86251f7124b2500ff8b37627a8ea37fd64846441a25957a1f002"`
[INFO] running `"docker" "rm" "-f" "7f5cf4cbd02a86251f7124b2500ff8b37627a8ea37fd64846441a25957a1f002"`
[INFO] [stdout] 7f5cf4cbd02a86251f7124b2500ff8b37627a8ea37fd64846441a25957a1f002