[INFO] cloning repository https://github.com/makerio90/roman-numarals
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/makerio90/roman-numarals" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmakerio90%2Froman-numarals", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmakerio90%2Froman-numarals'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bf389be87b78170c6cb37c30238bb01e76012b8d
[INFO] testing makerio90/roman-numarals against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmakerio90%2Froman-numarals" "/workspace/builds/worker-52/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-52/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/makerio90/roman-numarals on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/makerio90/roman-numarals
[INFO] finished tweaking git repo https://github.com/makerio90/roman-numarals
[INFO] tweaked toml for git repo https://github.com/makerio90/roman-numarals written to /workspace/builds/worker-52/source/Cargo.toml
[INFO] crate git repo https://github.com/makerio90/roman-numarals already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 72fddf8a51e0697c37dc1f9d5e84911eaf749859d63f3264272951941f5f5896
[INFO] running `Command { std: "docker" "start" "-a" "72fddf8a51e0697c37dc1f9d5e84911eaf749859d63f3264272951941f5f5896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "72fddf8a51e0697c37dc1f9d5e84911eaf749859d63f3264272951941f5f5896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72fddf8a51e0697c37dc1f9d5e84911eaf749859d63f3264272951941f5f5896", kill_on_drop: false }`
[INFO] [stdout] 72fddf8a51e0697c37dc1f9d5e84911eaf749859d63f3264272951941f5f5896
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5fff42c8ed216e2ec3e2b476678ae3d33043244be6cccb62cc60e8a5935bfdd
[INFO] running `Command { std: "docker" "start" "-a" "e5fff42c8ed216e2ec3e2b476678ae3d33043244be6cccb62cc60e8a5935bfdd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling roman-numarals v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `roman`
[INFO] [stdout]   --> src/main.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let roman = simplify(roman);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_roman`
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.42s
[INFO] running `Command { std: "docker" "inspect" "e5fff42c8ed216e2ec3e2b476678ae3d33043244be6cccb62cc60e8a5935bfdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5fff42c8ed216e2ec3e2b476678ae3d33043244be6cccb62cc60e8a5935bfdd", kill_on_drop: false }`
[INFO] [stdout] e5fff42c8ed216e2ec3e2b476678ae3d33043244be6cccb62cc60e8a5935bfdd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3dc645dc48b038266a225e7ba399ed3874709180c0377dd69ac86b47d69174e3
[INFO] running `Command { std: "docker" "start" "-a" "3dc645dc48b038266a225e7ba399ed3874709180c0377dd69ac86b47d69174e3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling roman-numarals v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `roman`
[INFO] [stdout]   --> src/main.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let roman = simplify(roman);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_roman`
[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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.35s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/roman_numarals-79c9a9a42a3919e1)
[INFO] running `Command { std: "docker" "inspect" "3dc645dc48b038266a225e7ba399ed3874709180c0377dd69ac86b47d69174e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dc645dc48b038266a225e7ba399ed3874709180c0377dd69ac86b47d69174e3", kill_on_drop: false }`
[INFO] [stdout] 3dc645dc48b038266a225e7ba399ed3874709180c0377dd69ac86b47d69174e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b0be5a2c272208808665d2fbb4441a4281c91b517ccc3ae11ab2d3f4b2a94faf
[INFO] running `Command { std: "docker" "start" "-a" "b0be5a2c272208808665d2fbb4441a4281c91b517ccc3ae11ab2d3f4b2a94faf", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `roman`
[INFO] [stderr]   --> src/main.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let roman = simplify(roman);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_roman`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `roman-numarals` (bin "roman-numarals" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/roman_numarals-79c9a9a42a3919e1)
[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 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b0be5a2c272208808665d2fbb4441a4281c91b517ccc3ae11ab2d3f4b2a94faf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0be5a2c272208808665d2fbb4441a4281c91b517ccc3ae11ab2d3f4b2a94faf", kill_on_drop: false }`
[INFO] [stdout] b0be5a2c272208808665d2fbb4441a4281c91b517ccc3ae11ab2d3f4b2a94faf