[INFO] updating cached repository https://github.com/adrianbrink/rustlings
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] 0f7a4dbe9c6744b4f27a2960564cb8f67b4fda15
[INFO] testing adrianbrink/rustlings against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadrianbrink%2Frustlings" "/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/adrianbrink/rustlings on toolchain 41997647ba6a77908f6ef64401414feb00bccf16
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/adrianbrink/rustlings
[INFO] finished tweaking git repo https://github.com/adrianbrink/rustlings
[INFO] tweaked toml for git repo https://github.com/adrianbrink/rustlings written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/adrianbrink/rustlings already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "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" "+41997647ba6a77908f6ef64401414feb00bccf16" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2dd144d9c69d47e223f6134cafd036d25517ae425473f877bf67ad379644b069
[INFO] running `"docker" "start" "-a" "2dd144d9c69d47e223f6134cafd036d25517ae425473f877bf67ad379644b069"`
[INFO] [stderr]    Compiling rustlings v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `is_even`
[INFO] [stderr]  --> src/tests.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn is_even(num: i32) -> bool {
[INFO] [stderr]   |    ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `times_two`
[INFO] [stderr]  --> src/tests.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn times_two(num: i32) -> i32 {
[INFO] [stderr]   |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `"docker" "inspect" "2dd144d9c69d47e223f6134cafd036d25517ae425473f877bf67ad379644b069"`
[INFO] running `"docker" "rm" "-f" "2dd144d9c69d47e223f6134cafd036d25517ae425473f877bf67ad379644b069"`
[INFO] [stdout] 2dd144d9c69d47e223f6134cafd036d25517ae425473f877bf67ad379644b069
[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" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f7a8da9e698b253bac7cbb9945bbdf957669d812e8a1c3c10a217fe7f884a2b8
[INFO] running `"docker" "start" "-a" "f7a8da9e698b253bac7cbb9945bbdf957669d812e8a1c3c10a217fe7f884a2b8"`
[INFO] [stderr]    Compiling rustlings v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `is_even`
[INFO] [stderr]  --> src/tests.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn is_even(num: i32) -> bool {
[INFO] [stderr]   |    ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `times_two`
[INFO] [stderr]  --> src/tests.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn times_two(num: i32) -> i32 {
[INFO] [stderr]   |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.44s
[INFO] running `"docker" "inspect" "f7a8da9e698b253bac7cbb9945bbdf957669d812e8a1c3c10a217fe7f884a2b8"`
[INFO] running `"docker" "rm" "-f" "f7a8da9e698b253bac7cbb9945bbdf957669d812e8a1c3c10a217fe7f884a2b8"`
[INFO] [stdout] f7a8da9e698b253bac7cbb9945bbdf957669d812e8a1c3c10a217fe7f884a2b8
[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" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 600870eb902fad85286bbe27b6b31bb15de433ead2b0b0975b4c088db1e52ef1
[INFO] running `"docker" "start" "-a" "600870eb902fad85286bbe27b6b31bb15de433ead2b0b0975b4c088db1e52ef1"`
[INFO] [stderr] warning: function is never used: `is_even`
[INFO] [stderr]  --> src/tests.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn is_even(num: i32) -> bool {
[INFO] [stderr]   |    ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `times_two`
[INFO] [stderr]  --> src/tests.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn times_two(num: i32) -> i32 {
[INFO] [stderr]   |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rustlings-fd8d2eb5e6ea7766
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::tests::you_can_assert_eq ... ok
[INFO] [stdout] test tests::tests::you_can_assert ... ok
[INFO] [stdout] test tests::tests::return_twice_of_negative_numbers ... ok
[INFO] [stdout] test tests::tests::is_true_when_even ... ok
[INFO] [stdout] test tests::tests::is_true_when_uneven ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rustlings-536f472b6e9db3f7
[INFO] [stdout] test tests::tests::return_twice_of_positive_numbers ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rustlings
[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] [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" "600870eb902fad85286bbe27b6b31bb15de433ead2b0b0975b4c088db1e52ef1"`
[INFO] running `"docker" "rm" "-f" "600870eb902fad85286bbe27b6b31bb15de433ead2b0b0975b4c088db1e52ef1"`
[INFO] [stdout] 600870eb902fad85286bbe27b6b31bb15de433ead2b0b0975b4c088db1e52ef1