[INFO] updating cached repository https://github.com/robinedwards/foobar
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a69c4c9b528f35d52292fe2401617ea03e8cb842
[INFO] testing robinedwards/foobar against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobinedwards%2Ffoobar" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/robinedwards/foobar on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "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 work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/robinedwards/foobar already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 295dcd28b9df6084272e8b7684765569937bca55a47d2948bf78823753851c6c
[INFO] running `"docker" "start" "-a" "295dcd28b9df6084272e8b7684765569937bca55a47d2948bf78823753851c6c"`
[INFO] [stderr]    Compiling foobar v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.05s
[INFO] running `"docker" "inspect" "295dcd28b9df6084272e8b7684765569937bca55a47d2948bf78823753851c6c"`
[INFO] running `"docker" "rm" "-f" "295dcd28b9df6084272e8b7684765569937bca55a47d2948bf78823753851c6c"`
[INFO] [stdout] 295dcd28b9df6084272e8b7684765569937bca55a47d2948bf78823753851c6c
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] a353744e296bd8bed3e2944c72588d02de7c08719c758ab83119c0591907cbb7
[INFO] running `"docker" "start" "-a" "a353744e296bd8bed3e2944c72588d02de7c08719c758ab83119c0591907cbb7"`
[INFO] [stderr]    Compiling 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: consider prefixing 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: consider prefixing 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: consider prefixing 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: consider prefixing 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: consider prefixing with an underscore: `_environment`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `"docker" "inspect" "a353744e296bd8bed3e2944c72588d02de7c08719c758ab83119c0591907cbb7"`
[INFO] running `"docker" "rm" "-f" "a353744e296bd8bed3e2944c72588d02de7c08719c758ab83119c0591907cbb7"`
[INFO] [stdout] a353744e296bd8bed3e2944c72588d02de7c08719c758ab83119c0591907cbb7
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 157acb42787d783059c0cce0d747afa76b832435f2f7acbaa31ed04906678dec
[INFO] running `"docker" "start" "-a" "157acb42787d783059c0cce0d747afa76b832435f2f7acbaa31ed04906678dec"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/foobar-7426d4c78f7fc46c
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/foobar-1a4d08764ce0bbdc
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/tests-61a83636b6fd33d8
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test test_define_evals_to_unit ... ok
[INFO] [stdout] test test_add ... ok
[INFO] [stdout] test test_begin ... ok
[INFO] [stdout] test test_define_scope ... ok
[INFO] [stdout] test test_lambda_is_callable ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests foobar
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "157acb42787d783059c0cce0d747afa76b832435f2f7acbaa31ed04906678dec"`
[INFO] running `"docker" "rm" "-f" "157acb42787d783059c0cce0d747afa76b832435f2f7acbaa31ed04906678dec"`
[INFO] [stdout] 157acb42787d783059c0cce0d747afa76b832435f2f7acbaa31ed04906678dec