[INFO] cloning repository https://github.com/adrianbrink/rustlings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/adrianbrink/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadrianbrink%2Frustlings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadrianbrink%2Frustlings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0f7a4dbe9c6744b4f27a2960564cb8f67b4fda15
[INFO] testing adrianbrink/rustlings against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadrianbrink%2Frustlings" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/adrianbrink/rustlings on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-5/source/Cargo.toml
[INFO] crate git repo https://github.com/adrianbrink/rustlings already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d24ad4e8bdfa914085f924c3bef29fac780f75d6ba911fb81b9de752a76fcfa9
[INFO] running `Command { std: "docker" "start" "-a" "d24ad4e8bdfa914085f924c3bef29fac780f75d6ba911fb81b9de752a76fcfa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d24ad4e8bdfa914085f924c3bef29fac780f75d6ba911fb81b9de752a76fcfa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d24ad4e8bdfa914085f924c3bef29fac780f75d6ba911fb81b9de752a76fcfa9", kill_on_drop: false }`
[INFO] [stdout] d24ad4e8bdfa914085f924c3bef29fac780f75d6ba911fb81b9de752a76fcfa9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a25478f89723428a72db98c0a2f9631e81158327c02cbfde290ca6dae857440d
[INFO] running `Command { std: "docker" "start" "-a" "a25478f89723428a72db98c0a2f9631e81158327c02cbfde290ca6dae857440d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rustlings v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `is_even`
[INFO] [stdout]  --> src/tests.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn is_even(num: i32) -> bool {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `times_two`
[INFO] [stdout]  --> src/tests.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn times_two(num: i32) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "a25478f89723428a72db98c0a2f9631e81158327c02cbfde290ca6dae857440d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a25478f89723428a72db98c0a2f9631e81158327c02cbfde290ca6dae857440d", kill_on_drop: false }`
[INFO] [stdout] a25478f89723428a72db98c0a2f9631e81158327c02cbfde290ca6dae857440d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cbea866cea1039b379fba0061a09af4b6fa26882ff48e7ba1220bad5fa8cdc21
[INFO] running `Command { std: "docker" "start" "-a" "cbea866cea1039b379fba0061a09af4b6fa26882ff48e7ba1220bad5fa8cdc21", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: function is never used: `is_even`
[INFO] [stdout]  --> src/tests.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn is_even(num: i32) -> bool {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rustlings v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `times_two`
[INFO] [stdout]  --> src/tests.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn times_two(num: i32) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2m 32s
[INFO] running `Command { std: "docker" "inspect" "cbea866cea1039b379fba0061a09af4b6fa26882ff48e7ba1220bad5fa8cdc21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbea866cea1039b379fba0061a09af4b6fa26882ff48e7ba1220bad5fa8cdc21", kill_on_drop: false }`
[INFO] [stdout] cbea866cea1039b379fba0061a09af4b6fa26882ff48e7ba1220bad5fa8cdc21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] aff883fa6d1ccaaaaddf96136ef1ba212a937c640baa4d227cd6dfbdf4f4f355
[INFO] running `Command { std: "docker" "start" "-a" "aff883fa6d1ccaaaaddf96136ef1ba212a937c640baa4d227cd6dfbdf4f4f355", kill_on_drop: false }`
[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: `rustlings` (lib) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rustlings-5baa94f56bbc50e6)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rustlings-b2cf43b16a71db56)
[INFO] [stdout] test tests::tests::is_true_when_even ... ok
[INFO] [stdout] test tests::tests::is_true_when_uneven ... ok
[INFO] [stdout] test tests::tests::return_twice_of_negative_numbers ... ok
[INFO] [stdout] test tests::tests::return_twice_of_positive_numbers ... ok
[INFO] [stdout] test tests::tests::you_can_assert ... ok
[INFO] [stdout] test tests::tests::you_can_assert_eq ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rustlings
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "aff883fa6d1ccaaaaddf96136ef1ba212a937c640baa4d227cd6dfbdf4f4f355", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aff883fa6d1ccaaaaddf96136ef1ba212a937c640baa4d227cd6dfbdf4f4f355", kill_on_drop: false }`
[INFO] [stdout] aff883fa6d1ccaaaaddf96136ef1ba212a937c640baa4d227cd6dfbdf4f4f355